I'm Saidul Islam Rajib. I enjoy turning ideas into reliable software that people can actually use. My primary focus is on backend development with C# and ASP.NET Core, while also building modern, responsive user interfaces with Next.js and React. I like writing clean code, improving existing systems, and exploring better ways to build software.
This project was mainly created with the hope of giving me an opportunity to express my feelings to my crush. Unfortunately, I never got the chance to do that. And as I’ve come to realize, she doesn’t seem to have even the slightest interest in me. So, although this project started with a personal hope, I’ve accepted the situation and decided to let it go.
mila-mart.vercel.app
Abstract Mila Interior Solutions (internally also called "Mila Shop & Studio") is a Bangladesh-based home-decor retailer, and this repository (milamart) is its bilingual (Bengali/English) commerce-and-operations web platform. It pairs a public storefront for fashion items, wallpapers, and made-to-measure wall stickers with a protected admin back office for order management, a finance ledger, and site-content control. The system is a full-stack TypeScript application: a React SPA front end, an Express/tRPC API back end, a MySQL/TiDB database via Drizzle ORM, and a Shopify Storefront integration for standard catalog checkout, alongside a custom-built pricing and order engine for measurement-based sticker orders. Business overview…
bachelor-point.team-sober.com
Bachelor Point — Short Abstract Bachelor Point is a full-stack mess/shared-flat management web app for bachelor households in Bangladesh (and similar setups). It replaces the typical spreadsheet-and-WhatsApp workflow bachelor messes use to track who ate what, who paid what, and who owes what. One supervisor runs a group (a "mess"); members log daily meals, supervisors record shared expenses (bazar/groceries, rent, gas, wifi, etc.), and the system automatically computes each member's monthly dues down to the paisa. Built with Next.js (pages router) + TypeScript + Prisma + PostgreSQL + Tailwind CSS. Detailed Description Domain & roles Three roles, enforced by a…
team-sober.com
Team Sober is a self-built, server-rendered platform for backend/DevOps writing, project showcases, and structured tutorials — written entirely in NestJS with no client framework. It's an installable PWA, stores all content as flat JSON instead of a database, and ships with a full admin panel covering posts, projects, live-site showcases, accounts, comments, and newsletter subscribers. Team Sober is a personal engineering platform built to double as both a portfolio and a working example of backend craft — every page is genuinely server-rendered, with no React, no build step for the frontend, and no database. How it's built NestJS on the…
Working at Brain Station 23 has strengthened my expertise in building enterprise-scale software and delivering high-quality solutions for international clients. I have contributed to high-traffic eCommerce applications, collaborated with cross-functional teams, and taken end-to-end ownership of features from design to production.
One of the biggest lessons has been understanding that growth comes through experience. By making mistakes, learning from them, and continuously improving my solutions, I have become a more thoughtful and reliable engineer. This mindset has helped me write cleaner code, make better technical decisions, and take greater ownership of my work. Along the way, I have also expanded my expertise in nopCommerce 4.9, Next.js, and AI-assisted development.
As a Junior Software Engineer at ASA International Management Services Limited (AMSL), I contributed to the design, development, deployment, and maintenance of enterprise-scale financial and banking applications. Working in a collaborative Agile environment, I partnered with cross-functional teams throughout the Software Development Life Cycle (SDLC) to deliver secure, scalable, and high-performance software solutions.
Key responsibilities and achievements:
My software engineering journey began at ASA International Management Services Limited (AMSL), where I started as an intern and grew into a Software Engineer. It was here that I transformed my academic knowledge into practical experience by developing enterprise-scale financial applications and working alongside experienced engineers.
At AMSL, I gained hands-on experience building banking and fintech solutions using the .NET ecosystem, microservices, and REST APIs. I worked on payment systems and financial products such as Fixed Deposit Schemes (FDS) and Monthly Deposit Schemes (MDS) while learning how to design scalable, maintainable, and business-focused software.
Key learnings and responsibilities:
More than the technologies, AMSL shaped my engineering mindset—teaching me to write clean, maintainable code, solve real business problems, and continuously improve as a software engineer.
At LIAO HE PTE. LTD. in Singapore, I worked as a Construction General Worker, performing a wide range of construction tasks including cement casting, steel reinforcement fitting, welding, concrete hacking, site preparation, material handling, and site cleaning.
Sometimes life doesn't go the way we expect. Looking back, I believe I needed those years of hard work to gain experience, build resilience, and learn valuable lessons that shaped who I am today.
Building Construction & Steel Fitting Training (2014)
In 2014, I enrolled in a hands-on training program at SETSCO-SRCI, temporarily pausing my academic studies to gain practical experience in building construction and steel fitting. Although this field is different from my current career as a Software Engineer, the training strengthened my discipline, attention to detail, problem-solving mindset, and ability to learn through real-world challenges.
Things learned
Key Takeaways
I'm learning AWS to build, deploy, and scale modern applications in production
I'm learning system design to understand how large-scale applications are built and maintained. It helps me design scalable, reliable, and efficient software, make better architectural decisions, and solve real-world engineering problems. My goal is to become a better backend engineer capable of building systems that grow with users and business needs.
Currently learning the payments domain by exploring payment gateway integration, card payment processing, secure transaction flows, and the architecture behind reliable, scalable payment systems.
