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Gumelar Tresna Dwinanda

@tresnaid

Frontend Engineer with 7+ years building reliable web applications with React, TypeScript, API integrations, and automated testing.

Indonesia

Message

Frontend Engineer with 7+ years of experience building reliable web applications using React and TypeScript. With a background that includes hands-on development and past experience in lead developer and engineering management roles, I bring a well-rounded perspective to code quality and team delivery. I focus on clean component architecture, API integrations, and automated testing to ship dependable software. I am open to remote roles worldwide and can align my working hours with the company’s timezone.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Independent / Self-Employed

Nov 2025 - Present (11 months)

Built production-oriented web applications, developer tools, design systems, and browser extensions using TypeScript, React, and Node.js. Designed and published the accessible Atlas component library, built the Clara CV authoring and publishing platform, and developed cross-browser extensions and automation tools with API integrations.

React NodeJS Astro Fastify SQLite Browser Extension Manifest V3 Design Systems

Lead Developer

Nusapala Group

May 2025 - Nov 2025 (6 months)

Managed sprint delivery and technical execution across internal operations and parking system teams. Coordinated with analysts and product owners to translate business requirements into technical specifications.

Sprint Management Technical Leadership Code Review Mentorship Frontend Development

Frontend Engineer

eFishery

Feb 2023 - Feb 2025 (2 years)

Developed and maintained web applications for quality control, order management, and KYC verification. Wrote unit and integration tests using Jest and React Testing Library, achieving 80% test coverage on new code.

React TypeScript REST APIs GraphQL Jest React Testing Library Refactoring Technical Documentation

Assistant Engineering Manager

Orami

Apr 2022 - Dec 2022 (8 months)

Coordinated engineering squad members on project delivery and agile sprint commitments. Conducted 1-on-1 discussions and facilitated discussions between engineering and non-technical stakeholders.

Agile Sprint Planning Team Coordination Mentorship Technical Interviews

Frontend Engineer

Orami

Dec 2019 - Jul 2022 (2 years 7 months)

Developed and maintained core features for the Orami e-commerce shopping platform using React. Integrated AI-driven product recommendations and optimized Core Web Vitals.

React Google Tag Manager Google Analytics Core Web Vitals Ecommerce Performance Optimization

Freelance Frontend Engineer

Modena

Nov 2021 - Jun 2022 (7 months)

Developed desktop admin panel features for the Global Customer Care System (GCCS), improving support resolution workflows. Converted UI/UX mockups into production-ready web interfaces.

Frontend Development Responsive Design UI UX implementation Admin Panels

Web Developer

PT. Indonesia Indicator

Nov 2018 - Dec 2019 (1 year 1 month)

Migrated core web applications from Angular 2 to Angular 8, boosting runtime performance and maintainability. Developed web interfaces for Sekota and built the Smart City Admin Panel.

Angular Web Development Ecommerce Admin Panels Performance Optimization