William Cheung
Sr. Software Engineer, AA-BB (Accounting Automation, Baby )
Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolWilliam Cheung is a senior software engineer based in Toronto with 14 years of professional experience and a deep track record of building production systems across cloud-native, FinTech, and AI domains. He currently leads backend and integration work at Abby’s Accounting Automation team, shipping serverless ETL, GraphQL, OAuth/webhook integrations, and multi-country tax connectors while running partner meetings and test-driven delivery. Previously he prototyped and scaled AI-driven products using LangChain, RAG, Bedrock/Anthropic/OpenAI, Pinecone, Timescale, and FastAPI for health and wellbeing pilots, and has a string of hackathon wins and Topcoder AI Champion accolades that signal practical creativity. Comfortable across Python, AWS, Terraform, Postgres, and hybrid stacks, he blends startup grit with enterprise experience from Rapid7, Pitney Bowes and others. Not obvious from his title: he’s been training LLMs to code and has repeatedly been the sole backend developer on fast-moving greenfield initiatives that secured follow-on funding.
14 years of coding experience
33 years of employment as a software developer
Grade 13, Grade 13 at Jarvis Collegiate InstituteBASc, Electrical Engineering, BASc, Electrical Engineering at University of TorontoGrade 8, Grade 8 at Lord Dufferin Public School
English, French
Github Skills (5)
smartsheet8
command-line-tool5
backup5
cli4
python3
Programming languages (2)
Github contributions (5)
GlobalsDB/Challenges
Oct 2011 - Apr 2012
Contributions:12 commits in 5 months
williamcheung/node-gitlab
Jan 2017 - Nov 2021
Contributions:4 pushes in 4 years 10 months
apigitlab-apigitlabnodejs-librarynodejs
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