Hi, I'm Shahnewaz.
RSS FeedBuilding scalable enterprise SaaS and AI-integrated web applications. Focused on clean architecture, performance, and creating user-friendly interfaces that support real product growth.
Work Experience
Senior Frontend Engineer
Gain Solutions · Full-Time
Dhaka, BangladeshSept 2023 - Jan 2026
Led SaaS architecture across CRM, HRM, sales, and support systems. Built widget system and rich text editor (ProseMirror) as reusable npm packages., integrated AI workflows (Gemini 2.0), improved Core Web Vitals (1.5s→0.5s), and implemented testing (Vitest, Playwright), analytics (GA, PostHog), and WAF security.
JavaScript Developer - Frontend
Gain Solutions · Full-Time
Dhaka, BangladeshJul 2022 - Sept 2023
Improved UX/performance with map enhancements (+10% engagement). Implemented multi-tenant auth with hierarchical roles, Stripe recurring billing, and collaborated with Norway product owner and QA for delivery.
Frontend Developer
TechForing Ltd. · Full-Time
Dhaka, BangladeshJan 2022 - July 2022
Built HRMS and recruitment modules (accounts, employees, hiring) from design to production for internal and global users. Supported Django backend by fixing issues, including email template bugs.
Frontend Web Developer (Internship)
Minority Programmers Association, USA · Full-Time
Virginia, USAJun 2021 - Oct 2021
Built LMS features during a remote internship. Worked with global developers in a distributed team.
Education
Daffodil International University
Bachelor in Computer Science & Engineering
Skills
- JavaScript
- TypeScript
- React
- Next.js
- HTML
- Micro Frontends
- State Management
- Styling & UI Components
- GraphQL & REST APIs
- Performance & SEO
- Git & GitHub
- Testing & Debugging
- CI/CD & Deployment
- Cloud Computing
- Agile & Scrum
- Problem Solving
- Code Review & Collaboration
- Software Architecture