About Me
I am a Senior Software Engineer from Sylhet, Bangladesh, specializing in full-stack development with expertise in React, React Native, and modern web technologies. With over 12 years of experience, I've worked with Silicon Valley founders and built enterprise software across USA, Germany, UAE, and Bangladesh markets. I have a proven track record in startup environments from prototype development through seed funding to Series-B funding rounds.
Professional Summary
- 12+ years of experience in full-stack development with expertise in React, React Native and modern web technologies
- 3+ years of experience working with Silicon Valley founders (Tom Chavez & Vivek Vaidya from SuperSet)
- Proven track record in enterprise software development across USA, Germany, UAE, and Bangladesh markets
- Startup expertise from prototype development through seed funding to Series-B funding rounds
- Expert in Agile methodologies, DevOps practices, and CI/CD pipeline implementation
- Cross-platform development specialist with seamless transition capabilities between mobile and web technologies
- Team leadership experience training developer teams on modern AI tools and development best practices
Work Experience
Feb 2024 – Present
Sr. React Native Developer at HeavyTask LLC
Led cross-functional engineering team of 5+ developers to enhance UTS (Universal Tracking System) platform. Improved app performance by 40% and reduced load times by 60% through code optimization. Implemented automated CI/CD workflows using GitHub Actions and Expo EAS, reducing deployment time by 75%.
Nov 2020 – Dec 2023
React Native Developer at Boombox LLC
Developed initial prototype application from concept to seed funding presentation stage. Architected and implemented audio/video recording functionality with real-time chat capabilities. Integrated music assets synchronization with cloud storage for seamless user experience. Successfully migrated application backend from GraphQL to REST API without service interruption.
July 2020 – Dec 2020
Frontend Web Developer at Backyard Design Co
Developed custom SVG parsing system for motorcycle customization preview functionality. Created customer verification system allowing design preview before order completion. Built responsive web applications using React.js, HTML5, CSS3, and JavaScript. Optimized website performance achieving 95+ Google PageSpeed scores across all pages.
Jan 2013 – Dec 2018
Self Employed at Sarkar Raj LLC
Managed and scaled an independent AppStore business for over five years culminating in a successful portfolio acquisition. Built and led team of 6 members (4 developers and 2 market analysts) managing full SDLC processes. Published iOS game achieving top 10 AppStore rankings for 9 consecutive weeks. Achieved over 7 million total application downloads through strategic development and marketing.
May 2012 – Dec 2012
iOS Developer at Informatix Technologies
Developed iOS application for a USA base Pizza Shop chain using Objective-C and iOS SDK. Implemented Core Data persistence layer and SQLite database integration for offline functionality. Collaborated with design team to implement pixel-perfect UI/UX following Apple Human Interface Guidelines.
Technical Skills
Programming Languages
JavaScript, TypeScript, Objective-C, Python, SQL
Frontend Technologies
React, NextJS, HTML5, CSS3, Tailwind CSS, Bootstrap
Mobile Development
React Native, Expo, Expo Native Module, Swift, iOS SDK, Android Development
Backend Technologies
Node.js, Express.js, REST APIs, GraphQL
Databases
MySQL, PostgreSQL, SQLite, Redis, MongoDB
Cloud & DevOps
AWS (EC2, S3, Lambda, RDS), Docker, CI/CD
Development Tools
Git, GitHub Actions, TestFlight, Xcode, VS Code
AI & Automation
ChatGPT, Claude, Github Co-Pilot, Cursor, Windsurf, n8n, Zapier
Education
Bachelor of Science in Computer Science and Engineering
Shahjalal University of Science and Technology, Sylhet
2007 - 2011