Liam van der Berg
SENIOR SOFTWARE ENGINEER | AWS Certified Developer | TypeScript · Go | Fintech
Profile
Senior Software Engineer with 8 years building web platforms and APIs used by 2.3 million people a month. Works across TypeScript, Go and AWS, from system design and code review to CI/CD and on-call. Cut API latency by 62% and cloud costs by 34%, and mentors a team of four engineers.
Key Achievements
- 62% faster API responses after redesigning the caching layer.
- 34% lower cloud spend by moving batch jobs to spot instances.
- Checkout redesign shipped to 2.3 million users, lifting conversion 9%.
- Test coverage raised from 48% to 86% across core services.
Professional Experience
Senior Software EngineerMay 2022 to Present
Nimbus Ledger | South Africa
Consumer fintech platform, 2.3M monthly users, team of 5.
- Redesigned the API caching layer, cutting p95 latency by 62%.
- Led the checkout rebuild in React and Go, lifting conversion by 9%.
- Moved batch processing to spot instances, cutting cloud spend by 34%.
- Mentored 4 engineers and introduced weekly design reviews.
Software EngineerJul 2019 to Apr 2022
Fieldnote Logistics Cloud | South Africa
B2B logistics SaaS.
- Built the shipment tracking service handling 40 million events a day.
- Raised test coverage from 48% to 86% across core services.
- Automated deployments with GitHub Actions, from weekly to daily releases.
Junior DeveloperSep 2017 to Jun 2019
Brightloop Labs | South Africa
- Built internal tools in Node.js and React for the operations team.
- Fixed 300+ bugs and wrote the onboarding guide for new developers.
Education
BSc Computer Science
University of Cape Town, Cape Town, South Africa, 2017
Tools and Software
- Tools: GitHub, Datadog, Jira, Figma, Linear