Obsessed with performance. Built for scale.

About

Six years of React and TypeScript. Large-scale migrations, performance work and production apps shipped end to end — now leading a team of 5+ engineers.

1. currentJune 2025 - Present

   Senior Frontend Engineer

   Data Tree Technology, USA (Remote)

   • Building a scalable solution for Kinetik's digitally integrated healthcare system, enabling seamless workflows across NEMT (Non-Emergency Medical Transportation).
   • Contributing to the Trip Scheduler product through patient and transportation provider management, trip scheduling, driver dispatch, claims tracking, & transparency dashboards for health plans & transportation providers.
   • Enhancing performance and reducing UI latency by 40% through optimized rendering, memoization, code splitting, and lazy loading.
   • Developing a labeling system for Patients, Trips, Transportation Providers, Notes, & Documents with advanced filtering/search.
   • Contributing to CI/CD workflows, participating in code reviews, & ensuring smooth deployment of new features with zero downtime.
2. June 2023 - May 2025

   Senior Frontend Developer

   Supertal PTE LTD, Singapore (Remote)

   • Led the migration of a modular construction management system, Offsight, from Angular.js to React.js, raw CSS to TailwindCSS, and JavaScript to TypeScript, resulting in a 30% improvement in development efficiency and a scalable codebase.
   • Reduced loading time by 65% through optimization, react hooks, and reduced API calls, achieving a 10x boost in user satisfaction.
   • Developed production/labor/order tracking, analytics, a PDF editor like DocuSign, workflow automation, report generation, forecasting & a feature-permission-management system, serving 43 global companies & generating millions of dollars as revenue.
   • Implemented real-time data using Socket.IO, state management with Redux Toolkit, and drag-and-drop with React Beautiful DnD.
   • Introduced agile methodologies, CI/CD pipelines, & unit/end-to-end (e2e) testing to ensure seamless development & deployment.
3. December 2023 - May 2024

   Frontend Developer

   HockeyStack, USA (Remote, Part-Time)

   • Supported a Y Combinator-funded company by building a visually stunning, pixel-perfect, and high-performance landing page for their Go-to-Market analytics platform, leading to a 28% growth in new user sign-ups.
   • Collaborated with the UI/UX team to ensure seamless design integration with improved navigation features, enhancing overall user experience and accessibility, generating 5x more customer engagement, and reducing bounce rate.
4. January 2022 - May 2023

   Software Engineer II

   Recruit LLC, Sylhet, Bangladesh

   • Engineered Retune, a tool for building fine-tuned large language models (LLM) with GPT-4 using OpenAI APIs, allowing users to train personalized AI assistants & generate APIs to integrate into their apps as chatbots/agents, serving over 4000 active customers.
   • Integrated Completions & Fine-tuning APIs, designed REST APIs (Next.js backend) & managed MySQL with Prisma.
   • Crafted chat functionality for individuals/groups (Playroom's mobile app), allowing parents of nurseries/preschools to join by invitation, implemented features like photo sharing, calendar event creation, and a map to locate the playgrounds/parks.
   • Led the entire development lifecycle from initial concept through the final deployment of 6 React Native apps using Expo, transforming complex forestry data into intuitive user interface designs, alleviating pain points of 6000+ field workers.
5. March 2021 - December 2021

   Software Engineer I

   Recruit LLC, Sylhet, Bangladesh

   • Spearheaded the frontend design of Beatbarrow utilizing Flexbox, Grid, and responsive design with SASS, ensuring cross-browser compatibility and building a music and picture upload system, currently engaging over 500 local users.
   • Implemented Next.js SSR & SSG methods for a smooth user experience (UX) and introduced an authentication system with JWT.
   • Facilitated backend (Node.js) with GraphQL and MongoDB and integrated Stripe payment (one-time & subscription).