01Product
Himu Lingua
Full-stack EdTech platform providing German language education and career guidance for learners planning to study, work, train, or build their future in Germany.
Next.jsTypeScriptNode.jsExpressMongoDBDockerLinuxTraefik
SYSTEM STATUSONLINE
SARWAR
HOSSAIN
FULL-STACK SOFTWARE ENGINEERI design and build software systems from interface to infrastructure.
Location
Bangladesh
Focus
Software Engineering
Stack
TS · Go · Linux
Status
ONLINELocal Time
01 / SELECTED WORK
Selected Work
A selection of projects pulled from real GitHub repositories.
02Desktop
FyClip
Cross-platform clipboard manager that tracks clipboard history, provides instant search, and persists data between sessions with image support and pinning.
GoFyneLinuxCross-platform
03Infrastructure
Mongo Drive Backup
Production-ready Go service that periodically backs up MongoDB databases and uploads them to Google Drive with scheduled backups, compression, and a web dashboard.
GoMongoDBGoogle Drive APIDockerCoolify
04Desktop
StreamNest
Desktop media downloader built with Flet and yt-dlp supporting single media and playlist downloads with modern theme support.
PythonFletyt-dlpFFmpeg
05Backend
Digital Wallet Management System
Secure, modular, role-based backend API for a digital wallet system similar to Bkash or Nagad with JWT auth, access/refresh tokens, and KYC verification.
Express.jsTypeScriptMongoDBMongoose
06Frontend
Dream Wallet
Role-based frontend for a digital wallet system with Admin, Agent, and User dashboards, wallet operations, and secure API integration.
ReactTypeScriptRedux ToolkitTailwind CSS
02 / CAPABILITIES
Capabilities
Engineering capabilities across the full stack, from product to infrastructure.
Product Engineering
Turning ideas into production-ready applications with modern frameworks and clean architecture.
Backend Systems
APIs, authentication, databases, realtime systems and services built for scale.
Developer Tools
Building software that improves developer workflows and reduces operational friction.
Infrastructure
Linux, Docker, VPS, CI/CD, Cloudflare and deployment systems for reliable delivery.
UNDER THE HOOD
Under The Hood
A look at the tools and systems I work with.
$ whoami
sarwar
$ cat /etc/stack
TypeScript
Go
React / Next.js
Node.js
MongoDB / PostgreSQL
Docker
Linux
$ systemctl status creativity
● active — always running
ENGINEERING LOG
Engineering Log
A chronological record of deployments, architecture changes, and infrastructure work.
2026.09
Deployed production infrastructure
2026.09
Built automated MongoDB backup system
2026.08
Improved Himu Lingua architecture
2026.08
Worked on protected video infrastructure
2026.07
Built Linux tooling
05 / ENGINEERING NOTES
Engineering Notes
Articles on infrastructure, deployment, and developer tooling.
2026-09|DevOps · CI/CD · VPS
Production Infrastructure Deployment
How I set up a reproducible production environment with Caddy, PM2, and GitHub Actions.
2026-09|Go · MongoDB · Automation
Automated MongoDB Backup System
Building a reliable backup pipeline with Go, mongodump, Drive uploads, and email alerts.
2026-08|TypeScript · Architecture · MongoDB
Himu Lingua Architecture
Refactoring Himu Lingua into a cleaner layered architecture with explicit boundaries.
2026-08|Node.js · Security · HLS
Protected Video Infrastructure
Restricting video playback to authorized users with signed URLs, encryption, and observability.
ABOUT
About
Software engineer focused on building reliable systems.
I'm Sarwar Hossain, a full-stack software engineer based in Bangladesh. I design and build software systems from interface to infrastructure.
My work spans product engineering, backend systems, developer tooling, and infrastructure. I care about clean architecture, performance, and building things that last.