Elias Bennett

Software EngineerLondon

I build pricing and risk engines at BNP Paribas, and products of my own.

Experience

Went from no C# to shipping production code independently in six months, and now own implementation and delivery as the team’s only C# engineer.
Ported Java market-data loaders to C#, and took a stale data dependency out of live pricing behind a feature flag that defaults to off, with caching and an end-to-end test.
Built an AI workflow that gives each stage its own scoped agent. It took a pricer integration from about two weeks to a couple of days, and several teams across the department now use it.
Led a team of four to win the Early Careers digitisation competition, co-building a dashboard that cut a 30–40 minute data load to under 5.

Cut page load by 40% by refactoring React components and lazy-loading assets.
Moved PHP modules to Spring Boot module by module, with endpoints, validation and tests.
Fixed mobile layout and browser bugs found by a cross-browser testing pipeline; mobile retention rose by 30%.
Added indexes and rewrote slow queries, taking the key API’s p95 from 520 ms to 230 ms.

Scoped performance fixes with the engineers and ticketed them, taking the Core Web Vitals pass rate from 62% to 88% and cutting p95 page load by 30%.
Ran split tests and built analytics dashboards that showed which changes brought in consultations and guided what the engineers built next; consultation conversion rose by 15%.

Threshold A clearer view of what moving could cost.
Product · Data visualisation · 2026 eliasb.dev/things-i-make/threshold
Argus Risk Every number shows where it came from and how old it is.
Event-driven systems · 2026 eliasb.dev/things-i-make/argus-risk
Flowtime Breaks that match how long you actually focused.
Offline-first interaction · 2026 eliasb.dev/things-i-make/flowtime

University of Derby, Computing and Information Technologies BSc (Hons)Expected Jun 2027
University of Essex, Diploma of Higher Education, HistoryJul 2021