Karuniawan
Backend Engineer
I'm a backend engineer who enjoys building systems that just work — from APIs to infrastructure that handles real-world scale.
Projects
A selection of projects I've worked on
Healthcare Mobile Backend Platform
Designed and maintained backend services for a teleconsultaiton app — handling everything from appointment, booking, prescription workflows to payments.
PythonFlaskMongoDBPostgreSQLRedisRabbitMQCelery
Multi-tenant Clinic Management System
Built a clinic management backend that supports multiple tenants on a single platform, with async processing for heavier workloads.
FastAPIPostgreSQLRabbitMQCelery
Document-based RAG System
Developed a document Q&A system using RAG — users upload docs, and the system finds and summarizes relevant answers using semantic search.
FastAPIPostgreSQLQdrantRedisCelery
Skills
Technologies and tools I work with
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Frontend
Frameworks
ReactNext.jsTypeScript
Styling
Tailwind CSSCSS ModulesSassStyled Components
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Backend
Runtime
PythonPHPGoNode.js
Databases
PostgreSQLMongoDBRedisVector
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Tools
DevOps
DockerVercelGitHub Actions
Others
GitFigmaLinuxREST APIs
Get In Touch
Have a project in mind or just want to chat? Feel free to reach out!