Hello, I'm Connor.

Nice to meet you! I'm a software engineer from Singapore, working on data infrastructure at Stripe. Most of my time goes into large-scale data pipelines and the financial systems built on them. I enjoy infrastructure and self-hosting, and outside of tech I like reading about history and philosophy.
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Github
LinkedIn

About Me

Interests

  • Data infrastructure
  • Distributed systems
  • Databases
  • Linux
  • Self-hosting

Stuff I use

  • Kubuntu
  • Neovim
  • Firefox

Reading list

  • A Memory Called Empire
  • Dune
  • Think (by Simon Blackburn)
  • SPQR: A History of Ancient Rome

Skills

Languages

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Scala
Python
Python
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SQL
Java icon
Java
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Javascript
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HTML
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CSS

Tools

Spark icon
Spark
Airflow icon
Airflow
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LangChain
AI Agents icon
AI Agents
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React
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Linux

Experience

  • Software Engineer
    Stripe
    Feb 2025 – Present
    • Optimized large-scale Spark data pipelines through incremental processing and pipeline redesign, reducing compute by 28% (1.18M vcore-seconds/day) and processing time by 1.5 hours/day in one pipeline, and compute by 64% in another.
    • Improved the reliability and scalability of financial data infrastructure by driving production migrations and backfills. Implemented schema changes, incremental processing, and safe cutovers to ensure data integrity and backward compatibility.
    • Led cross-functional development and delivery of a tax-withholding system spanning payment, ledger, and accounting infrastructure, eliminating up to $20M/year in financial exposure and hundreds of hours of manual operational work.
    • Built AI-powered developer tooling using LangChain and agentic workflows, implementing automated context retrieval, debugging, model fallbacks, and workflow orchestration.
  • Software Engineer Intern
    Mastercard
    May 2024 – Aug 2024
    • Improved backend performance and reliability by redesigning REST APIs and refactoring existing services.
    • Built and presented a micropayment solution for metaverse and XR applications, communicating technical design and business value to stakeholders.

Projects

Airwaves
https://github.com/connlim/airwaves-client
Music player that synchronizes the playing of sound files across multiple devices.
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Javascript
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HTML
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CSS
Hugo Personal Site
https://github.com/connlim/developer-portfolio-blog
It's the site you're currently on! Static site built with Hugo and designed with Tailwind CSS. Deployed on Vercel.
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Hugo
Tailwind CSS
Tailwind CSS
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HTML
More Coming Soon!

Education

  • National University of Singapore
    B.Comp. in Computer Science
    2021 – 2025