I’m a full-stack software engineer in Dhaka with 4+ years of building production software, across the whole system: data, APIs and background services, the frontend, and the servers it runs on, which I deploy and look after myself.
At Nexzen Solution I own SaleBee CRM end to end. I maintained its legacy ASP.NET stack, moved it to .NET 10, PostgreSQL and Next.js without downtime, and now run its frontend, backend and database. On contract, I built the backend and video pipeline for MediVerse.
Alongside work I’m finishing a BSc in Computer Science & Engineering and researching AI watermark security, with two first-author arXiv preprints.
BSc in CSE (CGPA 3.90/4.00) · Dean’s Merit List, 1st · Software Development Contest, 1st runner-up · Education & activities →
Jul 2023 - Present
SaleBee CRM · Nexzen Solution Ltd.
Own a live multi-tenant CRM end to end. Maintained the legacy ASP.NET stack, then moved it to .NET 10, PostgreSQL and Next.js with zero downtime.
Jul 2022 - 2023
Built the admin dashboard and customer website for a digital-services platform in Next.js and TypeScript, on Firebase and a headless CMS.
Re-platformed a live CRM from ASP.NET 4.8 MVC to .NET 10 with the strangler-fig pattern; built a Clean Architecture backend with a custom MediatR pipeline.
Architected the NestJS backend behind a video-streaming e-learning platform used on web, Android and iOS.
Rebuilt a production CRM frontend as an API-first Next.js app, replacing Razor and jQuery.
Zero-downtime SQL Server → PostgreSQL migration at SaleBee and a MongoDB → PostgreSQL migration at MediVerse; replaced in-memory filtering with database-side materialized views (5 s → 500 ms).
Queue-backed systems in both stacks: bulk email/SMS/push in .NET with RabbitMQ, and video transcoding with BullMQ and FFmpeg.
Own deployment for what I build: containers, reverse proxies and SSL, CI/CD, backups and server hardening across several production hosts.
I plan the work, orchestrate coding agents, and write the skills and conventions that keep their output consistent. Nothing ships until I’ve reviewed it from both the user’s and the developer’s side.
Built an MCP server for SaleBee CRM; ran 846 text-watermarking experiments for my thesis, and reproduced a Tree-Ring forgery attack on Stable Diffusion XL.
Read my CV, see the systems I've built, or get in touch.