Rizky Tanjung

Senior Software Engineer

Rizky Tanjung

I build scalable backend systems and agentic AI products. Eight years shipping production software across POS, CRM, platform engineering, and AI-powered tooling — including backend infrastructure for Indonesia's e-Meterai, serving millions of citizens.

  • Based in Medan, Indonesia
  • Focus Backend · Platforms · Agentic AI
  • Core stack Node.js · Go · PostgreSQL · Redis · Nginx · Prometheus · VPS
  • Status Open to select engagements
View selected work Get in touch

Experience

2024 — Present

Backend Engineer

Dumbways.id

Led backend-heavy products across POS, CRM, recruitment and AI-assisted systems. Rapid experimentation paired with production discipline.

  • Designed rintis.id, an omnichannel CRM with native WhatsApp integration.
  • Solo-built Mum AI, an AI-powered CRM with automation agents (OpenAI, LangChain).
  • Shipped Tembuskerja, an LLM-driven job aggregator turning raw posts into structured listings.

NestJS · OpenAI · LangChain · PostgreSQL · WhatsApp API

2023 — 2024

Tech Lead · Freelance

Creatif Studio

Designed and delivered the MVP for a location-based laundry platform with an Uber-style pickup model — architected for rapid validation without closing the door on scale.

  • Owned MVP architecture end-to-end; backend built in Go, PostgreSQL and NestJS.
  • Implemented booking flow and nearest-driver matching for pickup and delivery.
  • Shipped to production and released to app stores for real-world validation.

Golang · NestJS · PostgreSQL

2019 — 2023

Backend Engineer

PT Mejik Utama Sugiharta

Platform engineering at enterprise scale — LMS, microservices infrastructure, no-code backends, and complex data sync pipelines.

  • Co-architected microgen.id, a low-code microservices platform (Node.js, Apollo GraphQL, Kubernetes, MongoDB).
  • Adopted by Peruri as backend infrastructure for Indonesia's e-Meterai, serving millions of citizens.
  • Designed and implemented Kontenbase.com, a no-code backend platform in Go with Kubernetes and Jaeger.
  • Built CDC and automation pipelines for multi-source data synchronization.

Node.js · Go · GraphQL · Kubernetes · MongoDB

Selected work

microgen.id dashboard

microgen.id

Enterprise platform

Low-code microservices platform co-architected for enterprise. Adopted by Peruri as backend infrastructure for Indonesia's e-Meterai.

Node.js · GraphQL · Kubernetes · MongoDB

Proprietary Visit
Kontenbase platform

Kontenbase.com

No-code backend

No-code backend platform for product teams with observability and distributed tracing built in.

Go · Kubernetes · Jaeger

Proprietary Visit
Tembuskerja listings

Tembuskerja

Agentic AI

LLM-powered job aggregator. Transforms unstructured Telegram and Instagram posts into structured, queryable listings.

LLMs · Scraping · Data pipelines

Proprietary Visit
Mum AI WhatsApp recruitment assistant

Mum AI

AI CRM · WhatsApp

Solo-built AI-powered CRM with automation agents for workflow orchestration and customer operations, delivered over WhatsApp.

OpenAI · LangChain · NestJS

Proprietary Chat demo
rintis.id CRM

rintis.id

Omnichannel CRM

Omnichannel CRM centralizing customer conversations with native WhatsApp integration.

NestJS · WhatsApp API

Proprietary Visit

Stack

Languages
Go, TypeScript, Node.js, JavaScript, Rust
Backend & Data
NestJS, Express, GraphQL, PostgreSQL, MongoDB, Redis, Prisma
Platform
Docker, Kubernetes, Jaeger, CI/CD, Git
Agentic AI
OpenAI, LangChain, MCP, RAG & memory, LLM tool-use
Frontend
React, Next.js, Tailwind
Workbench
Arch Linux, Neovim, tmux, Bash

Contact

Open to interesting problems — backend systems, platform work, or AI-augmented products.