Hi, I’m Yudis.
I build useful software.

October 2023 — Present

Indonesia

Lead Software Engineer

PT. Graha Teknologi Maju

I co-founded the company and lead engineering for government, AI, and SaaS products.

• Architected an LLM-powered knowledge and learning platform for Indonesia’s Ministry of Public Works: 3,000+ daily active users, 30,000+ at peak.
• Designed real-time traffic detection using computer vision for East Java’s Transportation Department.
• Built APPA Academy, a multi-tenant sports-management SaaS used by 500+ academies in Indonesia.
• Led 15+ developers across 29+ initiatives; contributed in TypeScript, React, Next.js, Python, and PostgreSQL.

February 2025 — August 2026

Remote · Switzerland · Freelance

Full-Stack AI Engineer

Quantamental AG

I was the sole engineer building an AI equity-research platform for this Swiss asset manager.

• Built data pipelines for financial statements, filings, earnings transcripts, fund letters, podcasts, newsletters, and social data.
• Built source-grounded LLM workflows for document analysis, thesis monitoring, modelling, projections, and valuation.
• Owned the full stack: Next.js, TypeScript, Node.js, Python, PostgreSQL, storage, authentication, background jobs, and container deployment.

February 2021 — October 2023

Surabaya, Indonesia

Lead Developer

PT Solusi Siber Teknologi (Retas.io)

I led government and enterprise projects while spending 60%+ of my time on hands-on engineering.

• Architected and deployed a nationwide product-quality system for Unilever Indonesia using React, Next.js, and Python APIs.
• Delivered 5+ React Native apps and 12+ web apps for enterprise and government clients.
• Turned stakeholder requirements into system designs and delivery plans as the main technical contact.
• Established CI/CD, automated testing, Git workflows, and code reviews.

April 2018 — January 2019

Nanjing, China

Mobile Application Developer

MyDaxue

I built web and mobile products for international clients using Laravel, PHP, and React Native.

• Managed requirements, implementation, and deployment.
• Worked with distributed teams across cultures and time zones.

November 2014 — January 2019

Remote

Independent Full-Stack Developer

Freelancer

I built web and mobile products independently for international clients.

• Handled discovery, scope, implementation, deployment, and client communication.
• Shipped products with Laravel, PHP, React Native, and REST APIs.