/ Curriculum Vitae
Tanzim Hossain
Backend Engineer · focused on system design & scalable backend systems.
/ Summary
I'm a CS undergrad at United International University who enjoys the unglamorous parts of backend engineering — clean boundaries, predictable data flows, and code my future self can still understand. I spend most of my time on multi-tenant SaaS design, concurrency, and small but pragmatic framework experiments. Outside of that, I mentor students at Softsasi and write about what I'm learning.
/ Experience
Backend Engineer & Mentor · Softsasi
- Designed and developed scalable backend systems
- Implemented clean architecture and modular service layers
- Led code reviews and architectural decisions
- Mentored interns on production-level engineering practices
Mentor · Softsasi
- Mentored developers on backend architecture and frontend structure
- Guided real-world project development
- Improved debugging and system-thinking skills of students
/ Selected Projects
Salon Management SaaS · Multi-tenant SaaS Platform
Full product for salon businesses — I built the Next.js frontend, NestJS backend, and deployment stack solo. Live at donebyme.dk: booking, scheduling, and subscriptions on a multi-tenant foundation.
FileTree Pro · VS Code Extension
VS Code extension to generate and preview project folder trees before files hit disk — small surface area, 29k+ downloads, steady adoption.
NextRush · Backend Framework
A learning-driven Node.js framework — middleware pipeline, trie-based router, plugin system, and zero-dependency core. Built to understand how frameworks actually work.
/ Technical Skills
- Languages
- TypeScript · Java · Go · Python · C++
- Backend
- Node.js · NestJS · Spring Boot
- Frontend
- React · Next.js
- Database
- PostgreSQL · MongoDB · Redis
- Infrastructure
- AWS EC2 · AWS RDS · AWS S3 · Load Balancer · Docker · RabbitMQ
- Architecture
- Multi-tenant Architecture · Clean Architecture · Service-Repository Pattern · RBAC · OOP · Framework Design
- System Design
- Rate Limiting · Caching Strategy · Background Jobs / Queues · Event-driven Patterns · Concurrency Control
- AI
- LLMs · LangChain · Agent Systems
/ Open Source & Writing
- Marketplace33,000+ downloadsFileTree Pro — VS Code extension for preview-first file tree generation (marketplace listing). Actively maintained.
- WritingMediumTechnical articles on backend systems, architecture and developer experience · @0xtanzim
- FrameworksIn-progressNextRush (Node) and Axiom (JVM) — small learning frameworks built from first principles.
/ Achievements
- 20251st Runner Up
NASA International Space Apps 2025 — Climaxplore (Team Softsasi)
1st runner up (Mymensingh site) at the 2025 NASA International Space Apps Challenge with Team Softsasi on Climaxplore — an AI weather risk platform. My focus: architecture support, technical review, and keeping the system design coherent through the sprint.
- 2025Built-in AI Challenge
Google Chrome Built-in AI Challenge 2025 — ContentChat AI
Shipped ContentChat AI: a Manifest V3 Chrome extension that uses on-device Gemini Nano (Summarizer, Prompt, Writer, Rewriter, Proofreader) — no API keys, privacy-first, built for the official 2025 challenge.
/ Education
BSc in Computer Science
United International University (UIU)