Senior Full Stack Engineer — LLM & AI Systems @ Novo AI

Building AI-integrated systems that automate insurance claims, pre-authorization, and retrospective case reviews. Previously Technical Lead at MarinaChain, full-stack/mobile/AI at KinderCastle, backend at Live Play Mobile, and full-stack at Pintarnya.

Top Graduate of Institut Teknologi Bandung (3.99 / 4.00 CGPA), Informatics '20.

• AI & LLM systems — medical OCR pipelines that understand context (not just read text), agentic workflows aware of ICD-10, ICD-10-PCS, HCPCS, DRG, TOSP, Aetna CPB, and EviCore Cigna guidelines, RAG over vector DBs, and AI-first error triaging wired to Sentry + traces.
• Full-stack products — React / Next.js / Vue on the frontend; Node, Go, Python (FastAPI, Django, Express) on the backend; PostgreSQL, MongoDB, Redis, DynamoDB, Elasticsearch, Milvus for storage.
• Mobile apps — Flutter (Bloc) and React Native, with clean-architecture patterns across data sources, repositories, use cases, and widgets.
• Cloud & DevOps — AWS (EC2, RDS, ElastiCache, Lambda, S3, CloudFront, Amplify), GCP (GKE, Cloud Run), DigitalOcean, Cloudflare, Docker, Kubernetes, CI/CD with GitHub Actions, OpenObserve for observability.

• Researched 10+ OCR models for handwritten medical documents; shipped a context-aware approach that lifted test pass rate from 65% → 90%+.
• Built a multi-agent pipeline for insurance claim / pre-auth / retrospective review, handling 1000+ documents daily (including 50+ page invoices) with medical-guideline awareness.
• Improved line-item extraction across long invoices — reliable tax/discount distribution without double entries — from 70% → 92.5% on tests.
• Shipped an AI-first triage system wiring Sentry, traces, logs, and customer feedback into agent skills, making bug-ticket creation ~10× faster.

• Led a cross-functional team of 4 (FE, BE, ML), ran 1:1s, ran hiring loops, scoped sprint work.
• Migrated all microservices to AWS (EC2, RDS, ElastiCache, S3, CloudFront, Lambda).
• Cut monthly AWS billing by ~40% via right-sizing + EC2/RDS savings plans.
• Stood up centralized observability across 7+ services with OpenObserve.
• Shipped CI/CD for every microservice via GitHub Actions + Docker — ~10× faster deploys vs manual SSH.
• Migrated Vue 3 CLI + Babel → Vite: 30% smaller bundle, 80% faster builds, fixed 232 ESLint errors along the way.
• Built MarinaDocs frontend — 6+ pages, DnD filesystem, streaming chatbot events, PDF preview, full Korean/English i18n, headless a11y-first components.

• Sole backend engineer on a live bingo game with complex side-bets, third-party casino integrations, serving ~1k+ concurrent users.
• Wrote the math models + Monte Carlo simulations — >1M rounds simulated in under 10s — to prove RTP matches casino targets.
• Shipped game quests generating $15k+/day and $12k+/day in in-game revenue.
• Cut DynamoDB monthly cost by ~30% by tuning RCU/WCU.
• Made Serverless deploys ~2× faster via shared Lambda layers and caching.

• Built the Xendit-integrated subscription system (late fees, overtime, leaves, churn) — replaced manual tracking, ~20× operational speedup across 500+ children daily.
• Shipped automated daily revenue recognition from child attendances — 500+ journal entries/day, zero manual input.
• Built an AI CV parser (vision LLMs) — HR went from weeks → minutes on 1000+ CVs.
• Built an internal RAG + multimodal chatbot for daily staff use.

• Designed Pintarnya AI CV Review — LLM + OCR + multimodal — serving ~10k CV reviews/month at low per-CV cost.
• Migrated frontend from Cloud Run → GKE, cutting cost by 2×+.
• Solved race conditions in money-handling services (Cari Cuan, Cari Promo) and integrated affiliate schemes with Dynata and Toluna.
• Cut DB load ~8× via Redis caching + bulk updates.
• Earlier, tuned Pintarnya's job-search query: DB CPU 90% → <50% — bridge fix before the Elasticsearch migration.

Languages  ·  TypeScript · Go · Python · Dart · Ruby · Haskell

Frontend  ·  React · Next.js · Vue 3 · Pinia · TanStack Query · Tailwind · Storybook · Cypress

Backend  ·  Node (Express) · Go · FastAPI · Django / DRF · SQLAlchemy · Sequelize · Celery

Mobile  ·  Flutter (Bloc) · React Native

AI / ML  ·  OpenAI API · LangChain · ReAct agents · RAG · Milvus · OCR pipelines · multimodal LLMs

Data  ·  PostgreSQL · MySQL · MongoDB · DynamoDB · Redis · Elasticsearch

Cloud / DevOps  ·  AWS · GCP (GKE, Cloud Run) · DigitalOcean · Cloudflare · Docker · Kubernetes · GitHub Actions · Caddy · Nginx · OpenObserve

• Sugarsmith.co — Shopify + Resend storefront for a Singapore client selling Sanrio macarons.
• Daily Wins — React + Express + Postgres app for tracking daily wins and tomorrow's goals, JWT auth.
• KataBaku — vanilla JS study tool for Indonesian UTBK pronunciation prep.
• Psychomotor Vigilance Task Test — Next.js + Google Sheets API for running and storing PVT tests.
• Samuel Cahyawijaya's personal site — customized al-folio Jekyll template.

• LinkedIn — marchotridyo
• GitHub — @acomarcho