Available for new opportunities
Harry Tjahja
Product · Fullstack · Frontend Engineer — building seamless digital experiences at the intersection of design and engineering.
About
Software Engineer with 3+ years of experience building web and mobile platforms from system design to production release. Shipped React/TypeScript products used by thousands of users, integrated RESTful APIs into production codebases, and built automated testing pipelines that reduced QA overhead by 30%.
I approach engineering problems by deeply understanding customer needs, weighing technical tradeoffs, and pushing for the right solution at the right time. I collaborate closely with Product, Design, and Support to resolve ambiguity and ship reliable, maintainable software.
Experience
Junior Software Developer
@ Yeti LLC
- ▸Owned end-to-end development of an admin portal that optimized user image moderation by 5× for a non-profit online photo album, driving the platform to 21,274 unique photos and a Guinness World Record.
- ▸Designed an automated sprint point tracking system improving project managers' workflow efficiency by 50%, connecting JIRA's API to a Postgres database via Prisma ORM with daily CRON-based ingestion.
- ▸Developed a React sweepstakes web app for a wine company, attracting 2,000+ new users with customized Material UI components built for reuse across future campaigns.
- ▸Reduced QA overhead by 30% by architecting automated testing pipelines using GitHub Actions, refactoring unit and integration tests in Jest to enforce continuous delivery standards.
Associate Front End Software Engineer
@ Speckle Corp
- ▸Led requirements gathering and product direction with stakeholders to deliver a cross-platform mobile app for teaching public speaking skills using React Native, shipping biweekly updates to the Google Play Store and Apple App Store.
- ▸Managed a team of 4 internal testers to track user feedback, validate feature functionality, and ensure alignment with product requirements and quality expectations.
Projects
AI News Curator
Aug – Oct 2025A React Native app powered by Google Gemini AI to generate personalized news feeds. Integrated and validated API endpoints via Postman, using the Gemini LLM to rank and surface articles by user preference.
FinPal – Stock Portfolio Financial Advisor
Jul 2025LLM-powered Next.js web app built at a hackathon that delivers investment advice from voice-inputted prompts. Integrated market-analysis APIs to generate clear recommendations with confidence scores, rationale, and cited sources. Awarded best use of CodeRabbit AI.
Skills
Languages
Frontend
Backend
Testing & CI
Tools