Senior Software Engineer at ArrowDot (2026-02 – Present)
- Established engineering best practices (testing, code review, documentation, etc.) across a large, high-complexity monorepo, measurably improving development velocity and reducing regression rates.
- Identified and resolved critical architectural flaws in ArrowDot's AI app builder, eliminating critical vulnerabilities and bugs, and improving platform reliability.
- Designed and shipped a backfill system to apply newly developed optimisations to existing AI-generated applications, ensuring consistency across the platform.
Senior Software Engineer 2 at Zappi Store (Intellection) (2023-12 – 2026-01)
- Designed and built the ELT/ETL pipeline replacing Zappi's legacy storage and data modelling platform, processing 100 million records across hundreds of clients.
- Reduced large, complex client data export times from 5+ days to under 3 minutes — approximately 10,000x faster than the previous pipeline.
Senior Engineering Manager at Zappi Store (Intellection) (2021-12 – 2023-12)
- Managed the data modelling team, overseeing engineers across Cape Town and London.
- Led technical hiring across Cape Town and London offices, conducting 200+ engineering interviews from 2016–2023.
Software Engineer → Senior Software Engineer at Zappi Store (Intellection) (2015-02 – 2021-12)
Data engineering and modelling for market research companies including YouGov, TNS, and Millward Brown, primarily in Ruby (Rails), Elixir (Phoenix), Python (Pandas, NumPy) and React.
- Designed and maintained Quattro, a domain-specific language functioning as a Ruby-to-scientific-Python interpreter for market research data analysis.
- Built AST optimisers for Quattro, including predicate push-down and rule-based subtree substitution, reducing average query times.
- Engineered a fault-tolerant extension framework for Quattro, enabling distributed teams to safely add language functionality without breaking core behaviour.
- Designed, built and maintained Zappi's data resolution, sanitisation, caching, and advanced filtering pipeline, serving concurrent analysts across hundreds of client accounts.
- Designed and built both the backend and parts of the frontend of the most widely used stats application across Zappi's analysis platform.
Associate Software Developer at ACI Worldwide (2014-08 – 2015-01)
Developed and maintained online payments software, primarily in Java.
Software Developer at S4 Integration (2013-07 – 2014-07)
Developed software for an international engineering and manufacturing company, primarily in C#.
