diff --git a/greataped/components/api/handlers/factory.go b/greataped/components/api/handlers/factory.go
index 234e85c..2e0e280 100644
--- a/greataped/components/api/handlers/factory.go
+++ b/greataped/components/api/handlers/factory.go
@@ -6,10 +6,12 @@ type httpHandlerFactory struct{}
 
 func (factory *httpHandlerFactory) Handlers() []IHttpHandler {
 	return []IHttpHandler{
-		EchoHandler(),   // │ P . /api/v1/echo
-		SignupHandler(), // │ P . /api/v1/signup
-		VerifyHandler(), // │ P . /api/v1/verify
-		LoginHandler(),  // │ P . /api/v1/login
+		EchoHandler(),                // │ P . /api/v1/echo
+		SignupHandler(),              // │ P . /api/v1/signup
+		VerifyHandler(),              // │ P . /api/v1/verify
+		LoginHandler(),               // │ P . /api/v1/login
+		GetProfileByUserHandler(),    // │ G . /api/v1/profile
+		UpdateProfileByUserHandler(), // │ P . /api/v1/profile
 	}
 }
 
diff --git a/greataped/components/api/handlers/get_profile_by_user_handler.go b/greataped/components/api/handlers/get_profile_by_user_handler.go
new file mode 100644
index 0000000..c4a1252
--- /dev/null
+++ b/greataped/components/api/handlers/get_profile_by_user_handler.go
@@ -0,0 +1,44 @@
+package handlers
+
+import (
+	"net/http"
+
+	. "github.com/xeronith/diamante/contracts/network/http"
+	pipeline "github.com/xeronith/diamante/network/http"
+	. "rail.town/infrastructure/components/api/protobuf"
+	. "rail.town/infrastructure/components/contracts"
+)
+
+type getProfileByUserHandler struct {
+}
+
+func GetProfileByUserHandler() IHttpHandler {
+	return &getProfileByUserHandler{}
+}
+
+func (handler *getProfileByUserHandler) Method() string {
+	return http.MethodGet
+}
+
+func (handler *getProfileByUserHandler) Path() string {
+	return "/api/v1/profile"
+}
+
+func (handler *getProfileByUserHandler) HandlerFunc() HttpHandlerFunc {
+	return func(x IServerDispatcher) error {
+		request := &GetProfileByUserRequest{}
+		result := &GetProfileByUserResult{}
+
+		onRequestUnmarshalled := func(request *GetProfileByUserRequest) {
+		}
+
+		return pipeline.Handle(x,
+			"get_profile_by_user",
+			GET_PROFILE_BY_USER_REQUEST,
+			GET_PROFILE_BY_USER_RESULT,
+			request, result,
+			onRequestUnmarshalled,
+			false,
+		)
+	}
+}
diff --git a/greataped/components/api/handlers/update_profile_by_user_handler.go b/greataped/components/api/handlers/update_profile_by_user_handler.go
new file mode 100644
index 0000000..b20e06b
--- /dev/null
+++ b/greataped/components/api/handlers/update_profile_by_user_handler.go
@@ -0,0 +1,44 @@
+package handlers
+
+import (
+	"net/http"
+
+	. "github.com/xeronith/diamante/contracts/network/http"
+	pipeline "github.com/xeronith/diamante/network/http"
+	. "rail.town/infrastructure/components/api/protobuf"
+	. "rail.town/infrastructure/components/contracts"
+)
+
+type updateProfileByUserHandler struct {
+}
+
+func UpdateProfileByUserHandler() IHttpHandler {
+	return &updateProfileByUserHandler{}
+}
+
+func (handler *updateProfileByUserHandler) Method() string {
+	return http.MethodPost
+}
+
+func (handler *updateProfileByUserHandler) Path() string {
+	return "/api/v1/profile"
+}
+
+func (handler *updateProfileByUserHandler) HandlerFunc() HttpHandlerFunc {
+	return func(x IServerDispatcher) error {
+		request := &UpdateProfileByUserRequest{}
+		result := &UpdateProfileByUserResult{}
+
+		onRequestUnmarshalled := func(request *UpdateProfileByUserRequest) {
+		}
+
+		return pipeline.Handle(x,
+			"update_profile_by_user",
+			UPDATE_PROFILE_BY_USER_REQUEST,
+			UPDATE_PROFILE_BY_USER_RESULT,
+			request, result,
+			onRequestUnmarshalled,
+			false,
+		)
+	}
+}
diff --git a/greataped/components/api/operations/factory.go b/greataped/components/api/operations/factory.go
index fc44528..fb347a2 100644
--- a/greataped/components/api/operations/factory.go
+++ b/greataped/components/api/operations/factory.go
@@ -11,6 +11,8 @@ func (factory *operationFactory) Operations() []IOperation {
 		SignupOperation(),
 		VerifyOperation(),
 		LoginOperation(),
+		GetProfileByUserOperation(),
+		UpdateProfileByUserOperation(),
 	}
 }
 
diff --git a/greataped/components/api/operations/get_profile_by_user_operation.go b/greataped/components/api/operations/get_profile_by_user_operation.go
new file mode 100644
index 0000000..a0ab001
--- /dev/null
+++ b/greataped/components/api/operations/get_profile_by_user_operation.go
@@ -0,0 +1,51 @@
+package operations
+
+import (
+	. "github.com/xeronith/diamante/contracts/operation"
+	. "github.com/xeronith/diamante/contracts/service"
+	. "github.com/xeronith/diamante/contracts/system"
+	. "github.com/xeronith/diamante/operation"
+	. "rail.town/infrastructure/components/api/protobuf"
+	. "rail.town/infrastructure/components/api/services"
+	. "rail.town/infrastructure/components/contracts"
+)
+
+type getProfileByUserOperation struct {
+	SecureOperation
+
+	run func(IContext, *GetProfileByUserRequest) (*GetProfileByUserResult, error)
+}
+
+func GetProfileByUserOperation() IOperation {
+	return &getProfileByUserOperation{
+		run: GetProfileByUserService,
+	}
+}
+
+func (operation *getProfileByUserOperation) Id() (ID, ID) {
+	return GET_PROFILE_BY_USER_REQUEST, GET_PROFILE_BY_USER_RESULT
+}
+
+func (operation *getProfileByUserOperation) InputContainer() Pointer {
+	return new(GetProfileByUserRequest)
+}
+
+func (operation *getProfileByUserOperation) OutputContainer() Pointer {
+	return new(GetProfileByUserResult)
+}
+
+func (operation *getProfileByUserOperation) Execute(context IContext, payload Pointer) (Pointer, error) {
+	return operation.run(context, payload.(*GetProfileByUserRequest))
+}
+
+/*
+func (operation *getProfileByUserOperation) ExecutionTimeLimits() (Duration, Duration, Duration) {
+	var (
+		TIME_LIMIT_WARNING  Duration = 20_000_000
+		TIME_LIMIT_ALERT    Duration = 35_000_000
+		TIME_LIMIT_CRITICAL Duration = 50_000_000
+	)
+
+	return TIME_LIMIT_WARNING, TIME_LIMIT_ALERT, TIME_LIMIT_CRITICAL
+}
+*/
diff --git a/greataped/components/api/operations/update_profile_by_user_operation.go b/greataped/components/api/operations/update_profile_by_user_operation.go
new file mode 100644
index 0000000..cc42730
--- /dev/null
+++ b/greataped/components/api/operations/update_profile_by_user_operation.go
@@ -0,0 +1,51 @@
+package operations
+
+import (
+	. "github.com/xeronith/diamante/contracts/operation"
+	. "github.com/xeronith/diamante/contracts/service"
+	. "github.com/xeronith/diamante/contracts/system"
+	. "github.com/xeronith/diamante/operation"
+	. "rail.town/infrastructure/components/api/protobuf"
+	. "rail.town/infrastructure/components/api/services"
+	. "rail.town/infrastructure/components/contracts"
+)
+
+type updateProfileByUserOperation struct {
+	SecureOperation
+
+	run func(IContext, *UpdateProfileByUserRequest) (*UpdateProfileByUserResult, error)
+}
+
+func UpdateProfileByUserOperation() IOperation {
+	return &updateProfileByUserOperation{
+		run: UpdateProfileByUserService,
+	}
+}
+
+func (operation *updateProfileByUserOperation) Id() (ID, ID) {
+	return UPDATE_PROFILE_BY_USER_REQUEST, UPDATE_PROFILE_BY_USER_RESULT
+}
+
+func (operation *updateProfileByUserOperation) InputContainer() Pointer {
+	return new(UpdateProfileByUserRequest)
+}
+
+func (operation *updateProfileByUserOperation) OutputContainer() Pointer {
+	return new(UpdateProfileByUserResult)
+}
+
+func (operation *updateProfileByUserOperation) Execute(context IContext, payload Pointer) (Pointer, error) {
+	return operation.run(context, payload.(*UpdateProfileByUserRequest))
+}
+
+/*
+func (operation *updateProfileByUserOperation) ExecutionTimeLimits() (Duration, Duration, Duration) {
+	var (
+		TIME_LIMIT_WARNING  Duration = 20_000_000
+		TIME_LIMIT_ALERT    Duration = 35_000_000
+		TIME_LIMIT_CRITICAL Duration = 50_000_000
+	)
+
+	return TIME_LIMIT_WARNING, TIME_LIMIT_ALERT, TIME_LIMIT_CRITICAL
+}
+*/
diff --git a/greataped/components/api/protobuf/spis.pb.go b/greataped/components/api/protobuf/spis.pb.go
index da2890c..f3bb4cc 100644
--- a/greataped/components/api/protobuf/spis.pb.go
+++ b/greataped/components/api/protobuf/spis.pb.go
@@ -547,6 +547,293 @@ func (x *LoginResult) GetToken() string {
 	return ""
 }
 
+// API: GetProfileByUser
+// -----------------------------------------------------------
+type GetProfileByUserRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *GetProfileByUserRequest) Reset() {
+	*x = GetProfileByUserRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_spis_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetProfileByUserRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetProfileByUserRequest) ProtoMessage() {}
+
+func (x *GetProfileByUserRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_spis_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetProfileByUserRequest.ProtoReflect.Descriptor instead.
+func (*GetProfileByUserRequest) Descriptor() ([]byte, []int) {
+	return file_spis_proto_rawDescGZIP(), []int{10}
+}
+
+type GetProfileByUserResult struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Username    string `protobuf:"bytes,1,opt,name=username,proto3" json:"username,omitempty"`
+	DisplayName string `protobuf:"bytes,2,opt,name=displayName,proto3" json:"displayName,omitempty"`
+	Avatar      string `protobuf:"bytes,3,opt,name=avatar,proto3" json:"avatar,omitempty"`
+	Banner      string `protobuf:"bytes,4,opt,name=banner,proto3" json:"banner,omitempty"`
+	Summary     string `protobuf:"bytes,5,opt,name=summary,proto3" json:"summary,omitempty"`
+	Github      string `protobuf:"bytes,6,opt,name=github,proto3" json:"github,omitempty"`
+}
+
+func (x *GetProfileByUserResult) Reset() {
+	*x = GetProfileByUserResult{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_spis_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetProfileByUserResult) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetProfileByUserResult) ProtoMessage() {}
+
+func (x *GetProfileByUserResult) ProtoReflect() protoreflect.Message {
+	mi := &file_spis_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetProfileByUserResult.ProtoReflect.Descriptor instead.
+func (*GetProfileByUserResult) Descriptor() ([]byte, []int) {
+	return file_spis_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *GetProfileByUserResult) GetUsername() string {
+	if x != nil {
+		return x.Username
+	}
+	return ""
+}
+
+func (x *GetProfileByUserResult) GetDisplayName() string {
+	if x != nil {
+		return x.DisplayName
+	}
+	return ""
+}
+
+func (x *GetProfileByUserResult) GetAvatar() string {
+	if x != nil {
+		return x.Avatar
+	}
+	return ""
+}
+
+func (x *GetProfileByUserResult) GetBanner() string {
+	if x != nil {
+		return x.Banner
+	}
+	return ""
+}
+
+func (x *GetProfileByUserResult) GetSummary() string {
+	if x != nil {
+		return x.Summary
+	}
+	return ""
+}
+
+func (x *GetProfileByUserResult) GetGithub() string {
+	if x != nil {
+		return x.Github
+	}
+	return ""
+}
+
+// API: UpdateProfileByUser
+// -----------------------------------------------------------
+type UpdateProfileByUserRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	DisplayName string `protobuf:"bytes,1,opt,name=displayName,proto3" json:"displayName,omitempty"`
+	Avatar      string `protobuf:"bytes,2,opt,name=avatar,proto3" json:"avatar,omitempty"`
+	Banner      string `protobuf:"bytes,3,opt,name=banner,proto3" json:"banner,omitempty"`
+	Summary     string `protobuf:"bytes,4,opt,name=summary,proto3" json:"summary,omitempty"`
+	Github      string `protobuf:"bytes,5,opt,name=github,proto3" json:"github,omitempty"`
+}
+
+func (x *UpdateProfileByUserRequest) Reset() {
+	*x = UpdateProfileByUserRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_spis_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UpdateProfileByUserRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UpdateProfileByUserRequest) ProtoMessage() {}
+
+func (x *UpdateProfileByUserRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_spis_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UpdateProfileByUserRequest.ProtoReflect.Descriptor instead.
+func (*UpdateProfileByUserRequest) Descriptor() ([]byte, []int) {
+	return file_spis_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *UpdateProfileByUserRequest) GetDisplayName() string {
+	if x != nil {
+		return x.DisplayName
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserRequest) GetAvatar() string {
+	if x != nil {
+		return x.Avatar
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserRequest) GetBanner() string {
+	if x != nil {
+		return x.Banner
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserRequest) GetSummary() string {
+	if x != nil {
+		return x.Summary
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserRequest) GetGithub() string {
+	if x != nil {
+		return x.Github
+	}
+	return ""
+}
+
+type UpdateProfileByUserResult struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	DisplayName string `protobuf:"bytes,1,opt,name=displayName,proto3" json:"displayName,omitempty"`
+	Avatar      string `protobuf:"bytes,2,opt,name=avatar,proto3" json:"avatar,omitempty"`
+	Banner      string `protobuf:"bytes,3,opt,name=banner,proto3" json:"banner,omitempty"`
+	Summary     string `protobuf:"bytes,4,opt,name=summary,proto3" json:"summary,omitempty"`
+	Github      string `protobuf:"bytes,5,opt,name=github,proto3" json:"github,omitempty"`
+}
+
+func (x *UpdateProfileByUserResult) Reset() {
+	*x = UpdateProfileByUserResult{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_spis_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UpdateProfileByUserResult) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UpdateProfileByUserResult) ProtoMessage() {}
+
+func (x *UpdateProfileByUserResult) ProtoReflect() protoreflect.Message {
+	mi := &file_spis_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UpdateProfileByUserResult.ProtoReflect.Descriptor instead.
+func (*UpdateProfileByUserResult) Descriptor() ([]byte, []int) {
+	return file_spis_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *UpdateProfileByUserResult) GetDisplayName() string {
+	if x != nil {
+		return x.DisplayName
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserResult) GetAvatar() string {
+	if x != nil {
+		return x.Avatar
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserResult) GetBanner() string {
+	if x != nil {
+		return x.Banner
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserResult) GetSummary() string {
+	if x != nil {
+		return x.Summary
+	}
+	return ""
+}
+
+func (x *UpdateProfileByUserResult) GetGithub() string {
+	if x != nil {
+		return x.Github
+	}
+	return ""
+}
+
 var File_spis_proto protoreflect.FileDescriptor
 
 var file_spis_proto_rawDesc = []byte{
@@ -589,8 +876,42 @@ var file_spis_proto_rawDesc = []byte{
 	0x52, 0x65, 0x73, 0x75, 0x6c, 0x74, 0x12, 0x1a, 0x0a, 0x08, 0x75, 0x73, 0x65, 0x72, 0x6e, 0x61,
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-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
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+	0x0b, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01,
+	0x28, 0x09, 0x52, 0x0b, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x4e, 0x61, 0x6d, 0x65, 0x12,
+	0x16, 0x0a, 0x06, 0x61, 0x76, 0x61, 0x74, 0x61, 0x72, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x06, 0x61, 0x76, 0x61, 0x74, 0x61, 0x72, 0x12, 0x16, 0x0a, 0x06, 0x62, 0x61, 0x6e, 0x6e, 0x65,
+	0x72, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x62, 0x61, 0x6e, 0x6e, 0x65, 0x72, 0x12,
+	0x18, 0x0a, 0x07, 0x73, 0x75, 0x6d, 0x6d, 0x61, 0x72, 0x79, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09,
+	0x52, 0x07, 0x73, 0x75, 0x6d, 0x6d, 0x61, 0x72, 0x79, 0x12, 0x16, 0x0a, 0x06, 0x67, 0x69, 0x74,
+	0x68, 0x75, 0x62, 0x18, 0x05, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x62, 0x22, 0x9f, 0x01, 0x0a, 0x19, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x50, 0x72, 0x6f, 0x66,
+	0x69, 0x6c, 0x65, 0x42, 0x79, 0x55, 0x73, 0x65, 0x72, 0x52, 0x65, 0x73, 0x75, 0x6c, 0x74, 0x12,
+	0x20, 0x0a, 0x0b, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x01,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x64, 0x69, 0x73, 0x70, 0x6c, 0x61, 0x79, 0x4e, 0x61, 0x6d,
+	0x65, 0x12, 0x16, 0x0a, 0x06, 0x61, 0x76, 0x61, 0x74, 0x61, 0x72, 0x18, 0x02, 0x20, 0x01, 0x28,
+	0x09, 0x52, 0x06, 0x61, 0x76, 0x61, 0x74, 0x61, 0x72, 0x12, 0x16, 0x0a, 0x06, 0x62, 0x61, 0x6e,
+	0x6e, 0x65, 0x72, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x62, 0x61, 0x6e, 0x6e, 0x65,
+	0x72, 0x12, 0x18, 0x0a, 0x07, 0x73, 0x75, 0x6d, 0x6d, 0x61, 0x72, 0x79, 0x18, 0x04, 0x20, 0x01,
+	0x28, 0x09, 0x52, 0x07, 0x73, 0x75, 0x6d, 0x6d, 0x61, 0x72, 0x79, 0x12, 0x16, 0x0a, 0x06, 0x67,
+	0x69, 0x74, 0x68, 0x75, 0x62, 0x18, 0x05, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x67, 0x69, 0x74,
+	0x68, 0x75, 0x62, 0x42, 0x04, 0x5a, 0x02, 0x2e, 0x2f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
@@ -605,23 +926,27 @@ func file_spis_proto_rawDescGZIP() []byte {
 	return file_spis_proto_rawDescData
 }
 
-var file_spis_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_spis_proto_msgTypes = make([]protoimpl.MessageInfo, 14)
 var file_spis_proto_goTypes = []interface{}{
-	(*SystemCallRequest)(nil), // 0: protobuf.SystemCallRequest
-	(*SystemCallResult)(nil),  // 1: protobuf.SystemCallResult
-	(*EchoRequest)(nil),       // 2: protobuf.EchoRequest
-	(*EchoResult)(nil),        // 3: protobuf.EchoResult
-	(*SignupRequest)(nil),     // 4: protobuf.SignupRequest
-	(*SignupResult)(nil),      // 5: protobuf.SignupResult
-	(*VerifyRequest)(nil),     // 6: protobuf.VerifyRequest
-	(*VerifyResult)(nil),      // 7: protobuf.VerifyResult
-	(*LoginRequest)(nil),      // 8: protobuf.LoginRequest
-	(*LoginResult)(nil),       // 9: protobuf.LoginResult
-	(*Document)(nil),          // 10: protobuf.Document
+	(*SystemCallRequest)(nil),          // 0: protobuf.SystemCallRequest
+	(*SystemCallResult)(nil),           // 1: protobuf.SystemCallResult
+	(*EchoRequest)(nil),                // 2: protobuf.EchoRequest
+	(*EchoResult)(nil),                 // 3: protobuf.EchoResult
+	(*SignupRequest)(nil),              // 4: protobuf.SignupRequest
+	(*SignupResult)(nil),               // 5: protobuf.SignupResult
+	(*VerifyRequest)(nil),              // 6: protobuf.VerifyRequest
+	(*VerifyResult)(nil),               // 7: protobuf.VerifyResult
+	(*LoginRequest)(nil),               // 8: protobuf.LoginRequest
+	(*LoginResult)(nil),                // 9: protobuf.LoginResult
+	(*GetProfileByUserRequest)(nil),    // 10: protobuf.GetProfileByUserRequest
+	(*GetProfileByUserResult)(nil),     // 11: protobuf.GetProfileByUserResult
+	(*UpdateProfileByUserRequest)(nil), // 12: protobuf.UpdateProfileByUserRequest
+	(*UpdateProfileByUserResult)(nil),  // 13: protobuf.UpdateProfileByUserResult
+	(*Document)(nil),                   // 14: protobuf.Document
 }
 var file_spis_proto_depIdxs = []int32{
-	10, // 0: protobuf.EchoRequest.document:type_name -> protobuf.Document
-	10, // 1: protobuf.EchoResult.document:type_name -> protobuf.Document
+	14, // 0: protobuf.EchoRequest.document:type_name -> protobuf.Document
+	14, // 1: protobuf.EchoResult.document:type_name -> protobuf.Document
 	2,  // [2:2] is the sub-list for method output_type
 	2,  // [2:2] is the sub-list for method input_type
 	2,  // [2:2] is the sub-list for extension type_name
@@ -756,6 +1081,54 @@ func file_spis_proto_init() {
 				return nil
 			}
 		}
+		file_spis_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetProfileByUserRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_spis_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetProfileByUserResult); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_spis_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UpdateProfileByUserRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_spis_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UpdateProfileByUserResult); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -763,7 +1136,7 @@ func file_spis_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_spis_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   10,
+			NumMessages:   14,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/greataped/components/api/protobuf/spis.proto b/greataped/components/api/protobuf/spis.proto
index 1539703..277d46c 100644
--- a/greataped/components/api/protobuf/spis.proto
+++ b/greataped/components/api/protobuf/spis.proto
@@ -62,4 +62,36 @@ message LoginResult {
     string token = 0x00000002;
 }
 
+// API: GetProfileByUser
+//-----------------------------------------------------------
+message GetProfileByUserRequest {
+}
+
+message GetProfileByUserResult {
+    string username = 0x00000001;
+    string displayName = 0x00000002;
+    string avatar = 0x00000003;
+    string banner = 0x00000004;
+    string summary = 0x00000005;
+    string github = 0x00000006;
+}
+
+// API: UpdateProfileByUser
+//-----------------------------------------------------------
+message UpdateProfileByUserRequest {
+    string displayName = 0x00000001;
+    string avatar = 0x00000002;
+    string banner = 0x00000003;
+    string summary = 0x00000004;
+    string github = 0x00000005;
+}
+
+message UpdateProfileByUserResult {
+    string displayName = 0x00000001;
+    string avatar = 0x00000002;
+    string banner = 0x00000003;
+    string summary = 0x00000004;
+    string github = 0x00000005;
+}
+
 //-----------------------------------------------------------
diff --git a/greataped/components/api/services/get_profile_by_user_service.go b/greataped/components/api/services/get_profile_by_user_service.go
new file mode 100644
index 0000000..96d72bd
--- /dev/null
+++ b/greataped/components/api/services/get_profile_by_user_service.go
@@ -0,0 +1,34 @@
+package services
+
+import (
+	. "github.com/xeronith/diamante/contracts/service"
+	. "rail.town/infrastructure/components/api/protobuf"
+	. "rail.town/infrastructure/components/contracts"
+	"rail.town/infrastructure/components/core"
+)
+
+// noinspection GoUnusedParameter
+func GetProfileByUserService(context IContext, input *GetProfileByUserRequest) (result *GetProfileByUserResult, err error) {
+	conductor := core.Conductor
+	_ = GET_PROFILE_BY_USER_REQUEST
+
+	conductor.LogRemoteCall(context, INITIALIZE, "get_profile_by_user", input, result, err)
+	defer func() { conductor.LogRemoteCall(context, FINALIZE, "get_profile_by_user", input, result, err) }()
+
+	_result, _err := conductor.GetProfileByUser(context.Identity())
+	if _err != nil {
+		err = _err
+		return nil, err
+	}
+
+	_ = _result
+
+	result = context.ResultContainer().(*GetProfileByUserResult)
+	result.Username = _result.Username()
+	result.DisplayName = _result.DisplayName()
+	result.Avatar = _result.Avatar()
+	result.Banner = _result.Banner()
+	result.Summary = _result.Summary()
+	result.Github = _result.Github()
+	return result, nil
+}
diff --git a/greataped/components/api/services/update_profile_by_user_service.go b/greataped/components/api/services/update_profile_by_user_service.go
new file mode 100644
index 0000000..e653b20
--- /dev/null
+++ b/greataped/components/api/services/update_profile_by_user_service.go
@@ -0,0 +1,33 @@
+package services
+
+import (
+	. "github.com/xeronith/diamante/contracts/service"
+	. "rail.town/infrastructure/components/api/protobuf"
+	. "rail.town/infrastructure/components/contracts"
+	"rail.town/infrastructure/components/core"
+)
+
+// noinspection GoUnusedParameter
+func UpdateProfileByUserService(context IContext, input *UpdateProfileByUserRequest) (result *UpdateProfileByUserResult, err error) {
+	conductor := core.Conductor
+	_ = UPDATE_PROFILE_BY_USER_REQUEST
+
+	conductor.LogRemoteCall(context, INITIALIZE, "update_profile_by_user", input, result, err)
+	defer func() { conductor.LogRemoteCall(context, FINALIZE, "update_profile_by_user", input, result, err) }()
+
+	_result, _err := conductor.UpdateProfileByUser(input.DisplayName, input.Avatar, input.Banner, input.Summary, input.Github, context.Identity())
+	if _err != nil {
+		err = _err
+		return nil, err
+	}
+
+	_ = _result
+
+	result = context.ResultContainer().(*UpdateProfileByUserResult)
+	result.DisplayName = _result.DisplayName()
+	result.Avatar = _result.Avatar()
+	result.Banner = _result.Banner()
+	result.Summary = _result.Summary()
+	result.Github = _result.Github()
+	return result, nil
+}
diff --git a/greataped/components/contracts/api.go b/greataped/components/contracts/api.go
index 38ae60e..3a3be5d 100644
--- a/greataped/components/contracts/api.go
+++ b/greataped/components/contracts/api.go
@@ -11,4 +11,6 @@ type IApi interface {
 	Signup(*SignupRequest) (*SignupResult, error)
 	Verify(*VerifyRequest) (*VerifyResult, error)
 	Login(*LoginRequest) (*LoginResult, error)
+	GetProfileByUser(*GetProfileByUserRequest) (*GetProfileByUserResult, error)
+	UpdateProfileByUser(*UpdateProfileByUserRequest) (*UpdateProfileByUserResult, error)
 }
diff --git a/greataped/components/contracts/opcodes.go b/greataped/components/contracts/opcodes.go
index 3781167..c51dc7b 100644
--- a/greataped/components/contracts/opcodes.go
+++ b/greataped/components/contracts/opcodes.go
@@ -23,6 +23,14 @@ const (
 	//LoginOperation
 	LOGIN_REQUEST = 0xF480F151
 	LOGIN_RESULT  = 0xBE819605
+
+	//GetProfileByUserOperation
+	GET_PROFILE_BY_USER_REQUEST = 0xEAB16E71
+	GET_PROFILE_BY_USER_RESULT  = 0x8EECDE97
+
+	//UpdateProfileByUserOperation
+	UPDATE_PROFILE_BY_USER_REQUEST = 0xC25AB0BA
+	UPDATE_PROFILE_BY_USER_RESULT  = 0x678A8BAF
 )
 
 var OPCODES = Opcodes{
@@ -35,4 +43,8 @@ var OPCODES = Opcodes{
 	0x2C8A8A49: "Verify",
 	0xF480F151: "LOGIN",
 	0xBE819605: "Login",
+	0xEAB16E71: "GET_PROFILE_BY_USER",
+	0x8EECDE97: "GetProfileByUser",
+	0xC25AB0BA: "UPDATE_PROFILE_BY_USER",
+	0x678A8BAF: "UpdateProfileByUser",
 }
diff --git a/greataped/components/contracts/spi.go b/greataped/components/contracts/spi.go
index 8333609..f72230d 100644
--- a/greataped/components/contracts/spi.go
+++ b/greataped/components/contracts/spi.go
@@ -58,6 +58,8 @@ type (
 		Signup(username string, email string, password string, editor Identity) (ISignupResult, error)
 		Verify(email string, token string, code string, editor Identity) (IVerifyResult, error)
 		Login(email string, password string, editor Identity) (ILoginResult, error)
+		GetProfileByUser(editor Identity) (IGetProfileByUserResult, error)
+		UpdateProfileByUser(displayName string, avatar string, banner string, summary string, github string, editor Identity) (IUpdateProfileByUserResult, error)
 	}
 
 	IEchoResult interface {
@@ -77,4 +79,21 @@ type (
 		Username() string
 		Token() string
 	}
+
+	IGetProfileByUserResult interface {
+		Username() string
+		DisplayName() string
+		Avatar() string
+		Banner() string
+		Summary() string
+		Github() string
+	}
+
+	IUpdateProfileByUserResult interface {
+		DisplayName() string
+		Avatar() string
+		Banner() string
+		Summary() string
+		Github() string
+	}
 )
diff --git a/greataped/components/contracts/system_component.go b/greataped/components/contracts/system_component.go
index 15aa170..4111d29 100644
--- a/greataped/components/contracts/system_component.go
+++ b/greataped/components/contracts/system_component.go
@@ -261,6 +261,8 @@ type (
 		Signup(username string, email string, password string, editor Identity) (ISignupResult, error)
 		Verify(email string, token string, code string, editor Identity) (IVerifyResult, error)
 		Login(email string, password string, editor Identity) (ILoginResult, error)
+		GetProfileByUser(editor Identity) (IGetProfileByUserResult, error)
+		UpdateProfileByUser(displayName string, avatar string, banner string, summary string, github string, editor Identity) (IUpdateProfileByUserResult, error)
 
 		NewDocument(id int64, content string) (IDocument, error)
 		NewSystemSchedule(id int64, enabled bool, config string) (ISystemSchedule, error)
@@ -283,6 +285,8 @@ type (
 		NewSignupResult(token string, code string, ignored interface{}) ISignupResult
 		NewVerifyResult(token string, ignored interface{}) IVerifyResult
 		NewLoginResult(username string, token string, ignored interface{}) ILoginResult
+		NewGetProfileByUserResult(username string, displayName string, avatar string, banner string, summary string, github string, ignored interface{}) IGetProfileByUserResult
+		NewUpdateProfileByUserResult(displayName string, avatar string, banner string, summary string, github string, ignored interface{}) IUpdateProfileByUserResult
 	}
 
 	ISystemComponent interface {
diff --git a/greataped/components/contracts/system_dispatcher.go b/greataped/components/contracts/system_dispatcher.go
index 29e25eb..23bad06 100644
--- a/greataped/components/contracts/system_dispatcher.go
+++ b/greataped/components/contracts/system_dispatcher.go
@@ -1035,6 +1035,8 @@ type IDispatcher interface {
 	Signup(username string, email string, password string) (ISignupResult, error)
 	Verify(email string, token string, code string) (IVerifyResult, error)
 	Login(email string, password string) (ILoginResult, error)
+	GetProfileByUser() (IGetProfileByUserResult, error)
+	UpdateProfileByUser(displayName string, avatar string, banner string, summary string, github string) (IUpdateProfileByUserResult, error)
 
 	// NewDocument creates a new 'Document' instance using the provided property values.
 	NewDocument(id int64, content string) (IDocument, error)
@@ -1112,6 +1114,10 @@ type IDispatcher interface {
 	NewVerifyResult(token string) IVerifyResult
 	// NewLoginResult creates a new result container for 'Login' system action.
 	NewLoginResult(username string, token string) ILoginResult
+	// NewGetProfileByUserResult creates a new result container for 'Get Profile By User' system action.
+	NewGetProfileByUserResult(username string, displayName string, avatar string, banner string, summary string, github string) IGetProfileByUserResult
+	// NewUpdateProfileByUserResult creates a new result container for 'Update Profile By User' system action.
+	NewUpdateProfileByUserResult(displayName string, avatar string, banner string, summary string, github string) IUpdateProfileByUserResult
 	// Assert asserts the provided condition and panics if the assertion is not valid.
 	Assert(condition bool) IAssertionResult
 	// AssertNoError panics if the provided error is not nil.
diff --git a/greataped/components/core/api_methods.go b/greataped/components/core/api_methods.go
index a08baf0..f99babd 100644
--- a/greataped/components/core/api_methods.go
+++ b/greataped/components/core/api_methods.go
@@ -55,10 +55,32 @@ func (api *api) Login(request *LoginRequest) (*LoginResult, error) {
 	}
 }
 
+func (api *api) GetProfileByUser(request *GetProfileByUserRequest) (*GetProfileByUserResult, error) {
+	result, err := api.call(GET_PROFILE_BY_USER_REQUEST, request)
+
+	if err != nil {
+		return nil, err
+	} else {
+		return result.(*GetProfileByUserResult), nil
+	}
+}
+
+func (api *api) UpdateProfileByUser(request *UpdateProfileByUserRequest) (*UpdateProfileByUserResult, error) {
+	result, err := api.call(UPDATE_PROFILE_BY_USER_REQUEST, request)
+
+	if err != nil {
+		return nil, err
+	} else {
+		return result.(*UpdateProfileByUserResult), nil
+	}
+}
+
 func init() {
 	API_RESULT[SYSTEM_CALL_RESULT] = SystemCallResult{}
 	API_RESULT[ECHO_RESULT] = EchoResult{}
 	API_RESULT[SIGNUP_RESULT] = SignupResult{}
 	API_RESULT[VERIFY_RESULT] = VerifyResult{}
 	API_RESULT[LOGIN_RESULT] = LoginResult{}
+	API_RESULT[GET_PROFILE_BY_USER_RESULT] = GetProfileByUserResult{}
+	API_RESULT[UPDATE_PROFILE_BY_USER_RESULT] = UpdateProfileByUserResult{}
 }
diff --git a/greataped/components/core/initializer.go b/greataped/components/core/initializer.go
index 837a8e5..380ca24 100644
--- a/greataped/components/core/initializer.go
+++ b/greataped/components/core/initializer.go
@@ -1111,6 +1111,14 @@ func (conductor *conductor) Login(email string, password string, editor Identity
 	return conductor.spiManager.Login(email, password, editor)
 }
 
+func (conductor *conductor) GetProfileByUser(editor Identity) (IGetProfileByUserResult, error) {
+	return conductor.spiManager.GetProfileByUser(editor)
+}
+
+func (conductor *conductor) UpdateProfileByUser(displayName string, avatar string, banner string, summary string, github string, editor Identity) (IUpdateProfileByUserResult, error) {
+	return conductor.spiManager.UpdateProfileByUser(displayName, avatar, banner, summary, github, editor)
+}
+
 func (conductor *conductor) NewDocument(id int64, content string) (IDocument, error) {
 	return NewDocument(id, content)
 }
@@ -1195,6 +1203,14 @@ func (conductor *conductor) NewLoginResult(username string, token string, _ inte
 	return NewLoginResult(username, token, nil)
 }
 
+func (conductor *conductor) NewGetProfileByUserResult(username string, displayName string, avatar string, banner string, summary string, github string, _ interface{}) IGetProfileByUserResult {
+	return NewGetProfileByUserResult(username, displayName, avatar, banner, summary, github, nil)
+}
+
+func (conductor *conductor) NewUpdateProfileByUserResult(displayName string, avatar string, banner string, summary string, github string, _ interface{}) IUpdateProfileByUserResult {
+	return NewUpdateProfileByUserResult(displayName, avatar, banner, summary, github, nil)
+}
+
 func (conductor *conductor) LogRemoteCall(context IContext, eventType uint32, source string, input, result interface{}, err error) {
 	errorMessage := ""
 	if err != nil {
diff --git a/greataped/components/core/spi.go b/greataped/components/core/spi.go
index b49f8e5..96ddda2 100644
--- a/greataped/components/core/spi.go
+++ b/greataped/components/core/spi.go
@@ -250,3 +250,11 @@ func (dispatcher *dispatcher) Verify(email string, token string, code string) (I
 func (dispatcher *dispatcher) Login(email string, password string) (ILoginResult, error) {
 	return dispatcher.conductor.SpiManager().Login(email, password, dispatcher.identity)
 }
+
+func (dispatcher *dispatcher) GetProfileByUser() (IGetProfileByUserResult, error) {
+	return dispatcher.conductor.SpiManager().GetProfileByUser(dispatcher.identity)
+}
+
+func (dispatcher *dispatcher) UpdateProfileByUser(displayName string, avatar string, banner string, summary string, github string) (IUpdateProfileByUserResult, error) {
+	return dispatcher.conductor.SpiManager().UpdateProfileByUser(displayName, avatar, banner, summary, github, dispatcher.identity)
+}
diff --git a/greataped/components/core/spi_manager.go b/greataped/components/core/spi_manager.go
index 1c5fd92..e5654b4 100644
--- a/greataped/components/core/spi_manager.go
+++ b/greataped/components/core/spi_manager.go
@@ -379,3 +379,127 @@ func (manager *spiManager) Login(email string, password string, editor Identity)
 		return result, nil
 	}
 }
+
+//region IGetProfileByUserResult Implementation
+
+type getProfileByUserResult struct {
+	username    string
+	displayName string
+	avatar      string
+	banner      string
+	summary     string
+	github      string
+}
+
+func NewGetProfileByUserResult(username string, displayName string, avatar string, banner string, summary string, github string, _ interface{}) IGetProfileByUserResult {
+	return &getProfileByUserResult{
+		username:    username,
+		displayName: displayName,
+		avatar:      avatar,
+		banner:      banner,
+		summary:     summary,
+		github:      github,
+	}
+}
+
+func (result getProfileByUserResult) Username() string {
+	return result.username
+}
+
+func (result getProfileByUserResult) DisplayName() string {
+	return result.displayName
+}
+
+func (result getProfileByUserResult) Avatar() string {
+	return result.avatar
+}
+
+func (result getProfileByUserResult) Banner() string {
+	return result.banner
+}
+
+func (result getProfileByUserResult) Summary() string {
+	return result.summary
+}
+
+func (result getProfileByUserResult) Github() string {
+	return result.github
+}
+
+//endregion
+
+func (manager *spiManager) GetProfileByUser(editor Identity) (result IGetProfileByUserResult, err error) {
+	defer func() {
+		if reason := recover(); reason != nil {
+			err = manager.Error(reason)
+		}
+	}()
+
+	editor.Lock(GET_PROFILE_BY_USER_REQUEST)
+	defer editor.Unlock(GET_PROFILE_BY_USER_REQUEST)
+
+	if result, err = commands.GetProfileByUser(NewDispatcher(Conductor, editor)); err != nil {
+		return nil, err
+	} else {
+		return result, nil
+	}
+}
+
+//region IUpdateProfileByUserResult Implementation
+
+type updateProfileByUserResult struct {
+	displayName string
+	avatar      string
+	banner      string
+	summary     string
+	github      string
+}
+
+func NewUpdateProfileByUserResult(displayName string, avatar string, banner string, summary string, github string, _ interface{}) IUpdateProfileByUserResult {
+	return &updateProfileByUserResult{
+		displayName: displayName,
+		avatar:      avatar,
+		banner:      banner,
+		summary:     summary,
+		github:      github,
+	}
+}
+
+func (result updateProfileByUserResult) DisplayName() string {
+	return result.displayName
+}
+
+func (result updateProfileByUserResult) Avatar() string {
+	return result.avatar
+}
+
+func (result updateProfileByUserResult) Banner() string {
+	return result.banner
+}
+
+func (result updateProfileByUserResult) Summary() string {
+	return result.summary
+}
+
+func (result updateProfileByUserResult) Github() string {
+	return result.github
+}
+
+//endregion
+
+func (manager *spiManager) UpdateProfileByUser(displayName string, avatar string, banner string, summary string, github string, editor Identity) (result IUpdateProfileByUserResult, err error) {
+	defer func() {
+		if reason := recover(); reason != nil {
+			err = manager.Error(reason)
+		}
+	}()
+
+	editor.Lock(UPDATE_PROFILE_BY_USER_REQUEST)
+	defer editor.Unlock(UPDATE_PROFILE_BY_USER_REQUEST)
+
+	if result, err = commands.UpdateProfileByUser(NewDispatcher(Conductor, editor), displayName, avatar, banner, summary, github); err != nil {
+		return nil, err
+	} else {
+		return result, nil
+	}
+}
diff --git a/greataped/components/core/system_results.go b/greataped/components/core/system_results.go
index 476f999..5cf6952 100644
--- a/greataped/components/core/system_results.go
+++ b/greataped/components/core/system_results.go
@@ -20,4 +20,12 @@ func (dispatcher *dispatcher) NewLoginResult(username string, token string) ILog
 	return NewLoginResult(username, token, nil)
 }
 
+func (dispatcher *dispatcher) NewGetProfileByUserResult(username string, displayName string, avatar string, banner string, summary string, github string) IGetProfileByUserResult {
+	return NewGetProfileByUserResult(username, displayName, avatar, banner, summary, github, nil)
+}
+
+func (dispatcher *dispatcher) NewUpdateProfileByUserResult(displayName string, avatar string, banner string, summary string, github string) IUpdateProfileByUserResult {
+	return NewUpdateProfileByUserResult(displayName, avatar, banner, summary, github, nil)
+}
+
 //endregion