Internal Workflow Backend API

Professional Experience · BKN RI

Developed and refined Go backend endpoints for internal workflow modules, including list/detail retrieval, filtering, sorting, pagination, workflow transitions, multipart file handling, and OpenAPI documentation.

Go REST API OpenAPI Swagger Keycloak RBAC Multipart File Upload Workflow System Filtering Sorting Pagination

⚠ In compliance with internship confidentiality: no internal endpoint paths, database schemas, workflow names, application names, domain details, or screenshots of real data are included.

Internal system — not publicly accessible.

Overview

Developed backend API endpoints in Go for an internal government workflow system that supports digital administration processes within a public-sector agency.

Context

Professional internship at BKN RI (National Civil Service Agency), Nov 2025 – 23 May 2026. Role: Programmer Intern — Digital Systems & Applications.

Responsibilities

Implemented Go REST API endpoints for list, detail, and data retrieval operations.
Added filtering, sorting, and pagination to data retrieval endpoints.
Worked with role-based access control through Keycloak integration for authentication and authorization.
Implemented multipart file upload handling for document-based processes.
Maintained OpenAPI/Swagger documentation for implemented endpoints.
Worked on scheduling-related data, document handling, and administrative data management.
Handled workflow transitions by reading and updating status on existing workflow data.

Architecture

The system is built using Go for backend services and follows a layered REST API structure. Authentication and authorization are handled through Keycloak integration. File uploads are processed through a multipart handler, and endpoints are described with OpenAPI/Swagger documentation.

Key Engineering Decisions

Implemented pagination following existing application conventions.
Worked within the established Keycloak integration for authentication and authorization rather than introducing custom auth.
Kept OpenAPI/Swagger documentation in sync with implemented endpoints.
Reused the existing layered structure to keep new endpoints consistent with the rest of the codebase.

Technology Stack

Go · REST API · OpenAPI / Swagger · Keycloak · Multipart File Upload · Filtering · Sorting · Pagination