RAHMAN MUHAEMIN
Full-Stack Web Developer

Jakarta, Indonesia · rahmanmuhaemin@gmail.com · +62 895-3225-04468
linkedin.com/in/rahman-muhaemin

SUMMARY
=======

Full-Stack Web Developer with 3+ years of hands-on experience building
scalable, efficient web applications, specializing in Go (Golang) for back-end
development. Proficient across the stack, from React, Next.js, and SvelteKit
on the front end to RESTful APIs, relational and NoSQL databases, and
containerized deployment. Experienced in building self-hosted AI systems,
including RAG pipelines and computer vision APIs. Passionate about clean code
and performance optimization.

WORK EXPERIENCE
===============

Freelance Full-Stack Developer                              Mar 2026 – Present
Self-Employed — Remote
  - Continued delivering projects for PT Semesta Arus Teknologi as a
    freelancer, including a self-hosted RAG system, a 32-camera CCTV
    monitoring and video analytics platform, and an offline computer vision
    API.
  - Building full-stack web applications end to end, from back-end APIs and
    databases to front-end interfaces and deployment.

Full-Stack Developer                                       Aug 2023 – Mar 2026
PT Semesta Arus Teknologi — South Jakarta, Indonesia
  - Developed and maintained responsive web applications using Go on the back
    end and SvelteKit, React, and Next.js on the front end.
  - Designed and implemented RESTful APIs for seamless integration between
    front-end and back-end services.
  - Built scalable, secure back-end services in Go, using PostgreSQL, MySQL,
    and MongoDB for data storage.
  - Collaborated closely with UI/UX designers and product managers to deliver
    features based on user needs and business requirements.
  - Wrote clean, maintainable, well-documented code following best practices
    and team guidelines.
  - Deployed and monitored applications on internal servers using Docker and
    Jenkins-based CI/CD pipelines.
  - Improved performance and reliability across the full stack through
    debugging and refactoring.


PROJECTS
========

CrawlerFox — API Marketplace Platform                                 Jun 2026
Personal Project · crawlerfox.xyz
  - An API marketplace that sells subscription-based access to multiple
    scraper services through Kong API Gateway.
  - Built the back-end orchestrator in Go with JWT + RBAC authentication and a
    dual-credential model: JWT for the dashboard and API keys for
    Kong-authenticated scraper calls.
  - Automated Kong provisioning (consumers, ACL groups, rate limits, API keys)
    on every subscription change, with tiered plans, promos, and
    single-platform / all-access tiers.
  - Created a cron-based worker that auto-expires overdue subscriptions, and
    built usage analytics by ingesting Kong logs per user and platform.
  - Deployed with Docker Compose and Cloudflare Tunnel, with structured
    logging (zerolog), Resend email integration, and auto-generated Swagger
    docs.
  tech: Go, Kong API Gateway, JWT, Docker Compose, Cloudflare Tunnel, Swagger

Anonvoice — Anonymous Voice Chat Platform                   Jul 2026 – Present
Personal Project · anonvoice.cyou
  - A live, Omegle-style anonymous voice chat app offering random 1-on-1 voice
    calls with no account required.
  - Built a Go (Fiber) back end with a layered architecture (handler, service,
    repository), a Redis-based matchmaking queue, and session-token anonymity.
  - Implemented real-time signaling with a gorilla/websocket hub and
    self-hosted LiveKit for WebRTC voice calls.
  - Developed a React + TypeScript PWA with i18n (Indonesian/English), a
    report system, and rate limiting.
  - Deployed with Docker Compose, Nginx, and Cloudflare Tunnel on a
    self-managed cloud server.
  tech: Go, Fiber, WebSocket, LiveKit (WebRTC), Redis, PostgreSQL, React,
        TypeScript, Docker

Nalar — AI Search-Answer Interface                         Aug 2026 – Sep 2026
Personal Project · nalar.wiki
  - A Perplexity-style search-answer app built on Brave Search's Ask AI,
    delivering streamed answers with inline citations and rich results.
  - Analyzed and documented the Ask AI streaming protocol, then built a Python
    client for it with curl_cffi.
  - Built a FastAPI back end that streams answers over SSE, including
    deep-research mode, entity lookups, and tool results (images, videos,
    news, shopping, web).
  - Developed a React + TypeScript PWA with citation hover cards, SQLite
    full-text thread search, Markdown/PDF export, and English/Indonesian UI;
    the public build keeps each visitor's threads in IndexedDB.
  - Set up GitHub Actions CI (Ruff, pytest, frontend checks) with automated
    deployment over a restricted SSH key behind Cloudflare Tunnel.
  tech: Python, FastAPI, SSE, curl_cffi, SQLite, React, TypeScript, IndexedDB,
        Docker, GitHub Actions

CCTV Monitoring — Video Analytics Platform                 Aug 2026 – Sep 2026
Freelance — PT Semesta Arus Teknologi
  - A self-hosted CCTV monitoring system (VMS) with an operator console for
    live viewing, AI event triage, recording playback, and fleet health,
    running on 32 IP cameras.
  - Built a Go (Gin, GORM) back end that provisions per-camera ingest
    containers via the Docker SDK and drives MediaMTX for RTSP ingest,
    HLS/WebRTC streaming, recording, and playback.
  - Developed a Python AI worker with YOLOv8 + ByteTrack for person tracking
    and event detection (loitering, signal loss, motion), plus face clustering
    (InceptionResnetV1 + pgvector) and license plate detection with OCR.
  - Created a React 19 + TypeScript operator console with a multi-layout live
    wall, an event triage center, and a 24-hour playback timeline.
  - Moved event images (~85% of a 223 GB database) out of PostgreSQL to disk
    or S3-compatible storage (MinIO) served via presigned URLs, and split
    detection and viewing streams so the AI keeps 4K frames while browsers
    receive sub-streams.
  tech: Go, Gin, GORM, MediaMTX, Python, YOLOv8, ByteTrack, PostgreSQL +
        pgvector, React 19, TypeScript, WebRTC, MinIO, Docker

Remo — AI Chat Assistant                                   Aug 2026 – Sep 2026
Personal Project · askremo.bond
  - AI chat assistant with streaming, image generation, and file attachments,
    built on Proton Lumo's API.
  tech: Bun, Hono, React 19

Self-Hosted RAG — Offline document Q&A                                Jun 2026
Freelance — PT Semesta Arus Teknologi
  - Fully offline RAG system that answers questions from users' own documents.
  tech: LlamaIndex, Ollama, Qdrant, FastAPI, React

Cybermail — Self-Hosted Temporary Email Service            Feb 2026 – Mar 2026
Personal Project · cybermail.us
  - A self-hosted disposable email service with an SMTP server, REST API, and
    web UI.
  - Implemented SMTP ingestion with Haraka (Node.js) and a custom plugin that
    validates domains before accepting mail.
  - Designed multi-layer storage: Redis for temporary inboxes with TTL
    auto-expiry and PostgreSQL (GORM) for persistent admin data.
  - Built a Go + Fiber REST API with JWT admin auth, rate limiting, domain
    management, MX record verification, and Scalar/Swagger docs, plus a
    Next.js inbox and admin dashboard.
  - Orchestrated all five services with Docker Compose and Cloudflare Tunnel
    for production deployment.
  tech: Go, Fiber, Haraka, Redis, PostgreSQL, Next.js, Docker Compose

Termigo — Desktop SSH Manager                              Jul 2025 – Nov 2025
Personal Project
  - Desktop SSH manager with multi-tab sessions, key generation, and OS
    auto-detection.
  tech: Go, Wails, Svelte, xterm.js

WhatsApp Blaster — Bulk Messaging Service                  Mar 2025 – Jul 2025
PT Semesta Arus Teknologi
  - A production bulk messaging service used by clients for marketing
    campaigns.
  - Built back-end services in Go exposing RESTful APIs for front-end
    integration and message queue management.
  - Implemented redundant message delivery through two back ends, Whatsmeow
    (WhatsApp Web protocol) and ADB-controlled Android devices, for load
    distribution.
  - Designed a multi-session architecture that runs multiple WhatsApp
    accounts/devices concurrently for higher throughput and client isolation.
  - Deployed on internal infrastructure with Docker and Jenkins CI/CD
    pipelines.
  tech: Go, Whatsmeow, ADB, Docker, Jenkins

Getcontact Scraper — Distributed Scraping Workers          Nov 2024 – Dec 2025
PT Semesta Arus Teknologi
  - Distributed Puppeteer scraping workers with a Redis queue, proxy rotation,
    MongoDB, and a SvelteKit + Socket.IO live dashboard.
  tech: Puppeteer, Redis, MongoDB, SvelteKit, Socket.IO

EDUCATION
=========

Dumbways Bootcamp                                           graduated Aug 2023
Full-Stack Web Development Bootcamp — Depok, Indonesia

SMK An-Nahl                                                 graduated Aug 2017
Computer and Network Engineering — Cianjur, Indonesia


TECHNICAL SKILLS
================
backend:    Go (Golang), JavaScript/TypeScript (Node.js, Bun), Python, Gin,
            Fiber, Hono, FastAPI
frontend:   HTML, CSS, Sass, Tailwind CSS, Bootstrap, React, React Native,
            Next.js, SvelteKit
database:   PostgreSQL (pgvector), MySQL, SQLite, MongoDB, Redis, Qdrant
ai-ml:      LlamaIndex, Ollama, YOLOv8, ByteTrack, FaceNet
            (InceptionResnetV1), OpenCV, EasyOCR
devops:     Docker, Docker Compose, Jenkins, GitHub Actions, Nginx, Kafka,
            Kong API Gateway, Cloudflare, MinIO (S3)
streaming:  MediaMTX, LiveKit, WebRTC, WebSocket, RTSP, HLS, FFmpeg
automation: Selenium, Puppeteer, Playwright
tools:      Visual Studio Code, Zed, Android Studio, Git, DataGrip, Burp
            Suite, Postman, Notion

SOFT SKILLS
===========
Problem Solving · Adaptability · Effective Communication · Performance
Optimization

LANGUAGES
=========
Bahasa Indonesia (Native) · English