Gumelar Tresna Dwinanda

Frontend Engineer

Professional Summary

Professional Summary

Frontend Engineer with a proven track record of enhancing product delivery through Agile methodologies. Skilled in React Framework and TypeScript, with strong problem-solving abilities and teamwork skills. Capable of developing both internal tools and customer-facing applications, and have led efforts to streamline the codebase, making it more manageable without compromising functionality

Experience

Lead Developer

— Nusapala Group
JakartaMay 2025 – Nov 2025
  • Led and managed two development teams (AMS squad and Parking squad), overseeing project lifecycles from conception to deployment.
  • Directed project management activities, ensuring timely delivery of key initiatives and maintaining alignment with company objectives.
  • Collaborating closely with the System Analyst to translate business needs into clear technical specifications

Freelance / Personal Projects

— Self Employee
RemoteFeb 2025 – May 2025
  • Built and maintained personal web applications, along with experimentation backend development — including a link collection app, a user authentication system, and personal media collection apps — to strengthen skills across the full stack and explore modern web architecture.
  • Explored digital marketing strategies such as SEO and social media growth techniques to support and promote creative projects.
  • Contributed to content creation processes for social media, assisting with planning and scripting to support overall engagement goals.
  • Engaged in continuous learning to stay up to date with evolving web technologies and digital trends

Frontend Engineer

— eFishery
RemoteFeb 2023 – Feb 2025
  • Actively participated in Agile/Scrum methodologies to improve team collaboration and product delivery timelines.
  • Troubleshoot front-end issues for timely resolution, maintaining a positive user experience.
  • Reduced codebase complexity by refactoring legacy code and implementing modular architecture patterns.
  • Utilized modern JavaScript frameworks for developing scalable and maintainable web applications.
  • Write RFC (Request For Comment) Technical Documentation.
  • Conducted unit testing to deliver optimal browser functionality.
  • Followed SDLC best practices within the Agile environment to produce rapid iterations for clients.

Assistant Engineering Manager

— Orami
Tangerang, BantenApr 2022 – Dec 2022
  • Coordinated engineering team member for project development.
  • Conduct 1o1 routine discussion with team member
  • Bridging dev team member and non-dev team member discussion
  • Provide supervision and leadership to team member
  • Involve in interview process

Frontend Engineer

— Orami
Tangerang, BantenDec 2019 – Jul 2022
  • Develop and maintain orami shopping platform.
  • Improved tools to boost user interaction and deliver design versatility.
  • Planned website development, converting mockups into usable web presence.
  • Collaborated with stakeholders during development processes to confirm creative proposals and design best practices.
  • Implemented changes and integrated requested elements to streamline business operations.
  • Adhered to SEO best practices while designing sites.

Freelance Frontend Engineer

— Modena
RemoteNov 2021 – Jun 2022
  • Develop feature for GCCS admin panel for desktop platform.
  • Planned website development, converting mockups into usable web presence.

Web Developer

— PT. Indonesia Indicator
Tangerang Selatan, BantenNov 2018 – Dec 2019
  • Develop and maintain admin panel for smart city mobile application.
  • Develop web domicile based ecommerce platform.
  • Converting mockups into usable web presence.
  • Applied emerging technologies to update and maintain site applicability.

Skills

Frontend & Languages

Technologies: Flutter, React Framework, Typescript

APIs & Frameworks

Technologies: GraphQL, RESTful APIs

Methodology & Soft Skills

Technologies: Analytical and Critical Thinking, Flexible and Adaptable, Problem-Solving, Scrum Framework, Teamwork and Collaboration

Achievements

Self Employee

— Freelance / Personal Projects
RemoteFeb 2025 – May 2025
  • Developed multiple personal projects, including frontend (web & mobile) and backend solutions.

eFishery

— Frontend Engineer
RemoteFeb 2023 – Feb 2025
  • Developed quality control and order management applications.
  • Achieved 80% test coverage on new code and at least 60% overall coverage across applications.
  • Managed KYC applications for B2C compliance.

Modena

— Freelance Frontend Engineer
RemoteNov 2021 – Jun 2022
  • Developed a global customer care system, improving service efficiency and support across regions. (Nov 2021)

Orami

— Frontend Engineer
Tangerang, BantenDec 2019 – Jul 2022
  • Developed and maintained the Orami shopping and chat platforms.
  • Integrated Netcore for personalized product recommendations.
  • Integrated Tokopedia's e-digital product services for expanded offerings.
  • Integrated Google Tag Manager (GTM) and Google Analytics (GA) for event tracking, enabling detailed user behavior insights and optimizing data-driven decisions.
  • Contributed to the most productive squad with the least carry-over points.
  • Helped drive the highest revenue-generating squad.
  • Improved Core Web Vitals for the shopping platform, enhancing load times and user experience.

PT. Indonesia Indicator

— Web Developer
Tangerang Selatan, BantenNov 2018 – Dec 2019
  • Migrated a web application from Angular 2 to Angular 8, boosting performance and maintainability.
  • Developed Sekota, a domicile-based e-commerce platform, enhancing user accessibility.
  • Developed the Smart City Admin Panel for efficient infrastructure management.

Education

Universitas Pendidikan Indonesia

— Bachelor of Science in Computer Science
BandungAug 2018