Khairul Hasan
Sr. Frontend Engineer (5 yrs +) - React, Redux, Next, JavaScript, TypeScript, Nodejs
Dhaka, Bangladesh
Experience
Projects
Links
Senior Frontend Developer
Wegro
Dhaka, BD
Mar 2025 – Present
CurrentKey Achievements
- Engineered ERP system for 15,000+ farmers, reducing manual coordination by 30%
- Implemented real-time tracking for 150+ field officers
- Optimized API integration, reducing network errors by 67%
Impact Metrics
$800K+
Investment transactions processed
25%
Increase in transaction volume
Tech Stack
ReactTypeScriptAPI IntegrationReal-time Systems
Senior Frontend Developer
Fleetblox
Canada (Remote - Part time)
Nov 2024 – Mar 2025
Key Achievements
- Developed AI-powered fleet management platform for 100+ companies
- Integrated AI algorithms reducing operational costs by 15%
- Built real-time tracking for 5,000+ fleet units
Impact Metrics
100+
Companies served
15%
Cost reduction achieved
Tech Stack
ReactReduxAI IntegrationReal-time Analytics
Frontend Engineer
Anchorblock Technology
Dhaka, BD
May 2023 – Feb 2025
Key Achievements
- Refactored Anchorbooks accounting software for 500+ clients
- Built USSD monitoring tool for 5M+ active users
- Integrated AI for automated invoice generation
Impact Metrics
5M+
Active users supported
500+
Clients served
Tech Stack
TypeScriptReactReduxD3.js
Software Engineer
IOTA Infotech Limited
Dhaka, BD
Apr 2022 – Apr 2023
Key Achievements
- Reduced Google Maps API usage by 40%
- Increased social media engagement by 53%
- Built SAAS frontend for 55,000+ employees
Impact Metrics
85%
Development efficiency improvement
40%
API cost reduction
Tech Stack
JavaScriptReactSAASAPI Optimization
Junior Software Engineer
ITGlobalOnline
Dhaka, BD
Mar 2021 – Feb 2022
Key Achievements
- Developed REST API using Node.js & Web3.js for blockchain integration handling 500+ transactions daily
- Improved NFT marketplace backend with Laravel to support daily active users seamlessly
- Managed and optimized VPS servers across 5+ live platforms, ensuring 94% uptime
Impact Metrics
500+
Blockchain transactions/day
94%
Platform uptime maintained
Tech Stack
Node.jsWeb3.jsLaravelREST APIServer Management