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Sumit Pramanik

@sumitpramanik

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I build high-performance React and React Native products across web and mobile.

India

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What I'm looking for

I'm looking to own scalable web and mobile architecture, lead frontend standards, mentor developers, and partner with cross-functional stakeholders to turn complex requirements into production-ready products.

I've delivered 17+ production-grade web and mobile applications for clients across fintech, healthcare, fitness, logistics, education, and e-commerce. At Konstant Infosolutions, I owned architecture and end-to-end delivery for scalable React and React Native products, while serving as the primary technical contact for cross-functional teams.

I've built products including NASM EDGE, Medara Health, Bonify, and 3D customization platforms Metalete and MetaMerch. I use React.js, React Native, Next.js, Redux, Firebase, Three.js, and REST APIs to create maintainable cross-platform experiences, improve frontend performance by up to 35%, and mentor developers through strong engineering standards.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Konstant Infosolutions

May 2025 - Jul 2026 (1 year 2 months)

Owned architecture and end-to-end delivery of scalable React and React Native applications for international clients. Led REST API integrations and served as primary technical point of contact for cross-functional teams.

React React Native REST APIs Code Review Testing Architecture Technical Leadership

React / React Native Developer

Freelance

Oct 2024 - May 2025 (7 months)

Delivered custom, production-ready web and mobile applications for international clients as an independent contractor. Acted as sole technical decision-maker across client engagements.

React React Native Architecture Tooling Project Management

React.js / React Native Programmer

Dotsquares Technologies

May 2023 - Oct 2024 (1 year 5 months)

Led development of cross-platform mobile applications in React Native, establishing reusable component patterns. Integrated Firebase and third-party services and drove performance improvements.

React Native Firebase Lazy Loading Code Splitting Memoization Performance Optimization

React Native Developer

Arka Softwares Pvt Ltd

Feb 2022 - Mar 2023 (1 year 1 month)

Built cross-platform mobile features in collaboration with UX/UI designers. Integrated third-party APIs and libraries including Firebase and Axios.

React Native Firebase Axios API Integration UX UI Collaboration

React.js / React Native Developer

Dev Technosys Pvt Ltd

Nov 2019 - Feb 2022 (2 years 3 months)

Delivered responsive web and mobile applications for global clients. Resolved production issues and partnered with backend developers to integrate REST APIs.

React React Native REST APIs Responsive Design Problem Solving

Quality Analyst

Bill Gosling Outsourcing

May 2018 - Sep 2019 (1 year 4 months)

Reviewed and tested software applications to identify defects and ensure functionality met requirements. Created and executed test cases and performed various testing types.

Software Testing Test Case Design Functional Testing Regression Testing UAT