Tech lead on the firm's core data platform, owning the data lifecycle and catalog. Re-architected its storage so data can live in several databases at once, and designed the orchestration that migrates and syncs data across them. I also lead developer experience for the larger team.

• Rust
• ClickHouse
• PostgreSQL
• Apache Kafka
• Kubernetes

• Rebuilt the wealth management analytics platform on ClickHouse, with Prefect moving the data in. One query went from 1m 48s to 3s.
• Added lead tracking on top of it, which picked up 4,500 leads and USD 50M of orders in its first six months.
• Ran daily checks across 50,000 instruments for rating changes, maturities and price moves. A million rows, under ten minutes, on Spark and Clojure.
• Took a threaded monolith apart into 25 autoscaling processors on Kubernetes and got twice the throughput out of it.
• Rewrote an unreliable closed-source market data library in Clojure, which cut production errors by 80%.
• Set up the observability platform on OpenTelemetry, ClickHouse, Kafka Connect and Alertmanager, wrote its alerts as tested infrastructure code, and was on call for it.

• Clojure
• Kotlin
• Python
• TypeScript
• Apache Spark
• Apache Kafka
• ClickHouse
• React
• Kubernetes

• A place for high school students to share notes and past papers. Started it at university, ran it for three years, and it still gets about 25,000 unique users a month.
• Hong Kong Science Park seed funded it with HK$100,000. I managed four part time engineers and an intern.
• Kept test coverage near 90%, mostly because I was the one who would be fixing it at 2am otherwise.
• Wound the company down in 2022 and left the platform running as a non profit rather than switch it off.

• Next.js
• TypeScript
• GraphQL
• Prisma
• PostgreSQL
• Redis
• Terraform
• GitHub Actions

Built an investment idea recommender, and a competition platform that graded submissions live during a recruiting event.

• TypeScript
• React
• Vue.js
• Spring Boot
• Docker

Replaced manual monthly invoicing with a system that generated the invoices, synced customers to NetSuite and Salesforce, and handled discounts and corrections.

• Go
• React
• Redux

Built a search tool that let the Hong Kong sales team match Azure products to what a client was actually asking for, side by side with the AWS equivalent.

• JavaScript
• Python
• jQuery

Full scholarship, 3.51/4.30. My final year project split an image analysis pipeline into per task containers behind a scheduler, taking 50 concurrent requests from 231s to 4.61s.

• TensorFlow
• Docker
• Terraform