I’m Subhajit Roy, an Android Developer passionate about building fast, intuitive,
and reliable mobile applications. I enjoy turning complex business requirements into clean,
scalable solutions that are easy to maintain and pleasant to use. My primary tools include Java,
Kotlin, Flutter, and Node.js, and I’m always exploring better ways to write efficient,
high-quality code.
Over the years, I’ve worked on a wide range of products, including payroll systems, POS billing
software, pharma field-tracking apps, document management systems, and educational platforms.
Each project has helped me strengthen my understanding of real-world workflows, performance
optimization, and scalable app architecture.
I care deeply about user experience and believe that great apps should feel simple, responsive,
and reliable. I focus on clean architecture, readable code, and long-term maintainability,
making sure the products I build can scale as requirements grow. Whether it’s designing smooth
user flows, optimizing performance, or integrating backend services, I aim to deliver solutions
that add real value.
I enjoy collaborating with teams, learning new technologies, and continuously improving my
craft. For me, development isn’t just about writing code — it’s about building products that
people actually enjoy using.
Android, Kotlin, Java, Flutter, Dart, MVVM, UI/UX & Firebase
Node.js, Express.js
Copilot tools & DeepSeek (Prompt Engineering, AI-assisted Coding)
MySQL, Firebase, SQLite
RESTful API, Web Services, JWT & Payment Gateway
Git, Firebase
Developed and maintained the Wrkplan Payroll Android app, adding features like QR-based attendance and a full UI/UX redesign.
Redeveloped Wrkplan Payroll using Flutter for a modern, cross-platform experience with improved architecture.
Contributed to a shop billing app, focusing on real-time billing workflows and optimizing POS input flow.
Delivered features for the ePharma app, enabling medical reps to view reports, track duties, and receive admin circulars.
Built the LetKnow document management app, allowing admins to upload files and users to view, download, or print.
Created an interactive alphabet learning app for children with reading and writing modules.
Feel free to reach out to me.