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Elias · Software engineer · London

How I work

I work across systems, data, and interfaces. I like understanding how a product works underneath as well as how it feels to use.

HereMy projects, a few experiments, and some things I enjoy.

Selected work

01 / Featured work

A few projects I want to put first.

Threshold landing page showing rental affordability choices for London, Basel, and Zurich01

Product engineering · Data visualisation · 2026

Threshold

A rental affordability calculator for London, Basel, and Zurich. It brings salary, moving costs, and local assumptions together to show what it might take to move.

  • Shareable URL state
  • Typed city configuration
  • Accessible visual reasoning
Built with
React 19 · TypeScript · Vite · React Router · React Map GL · MapLibre GL JS · URLSearchParams · Vitest
Read case study Open project View code
Argus Risk interface showing event-driven risk positions02

Event-driven systems

Argus Risk

A local educational simulator for a multi-currency risk platform. It follows simulated market data and trades through the system and shows their effect on a portfolio dashboard.

Built with
.NET 8 · Kafka / Redpanda · PostgreSQL / Marten · SignalR · Next.js
Read case study View code
Flowtime focus timer interface03

Offline-first interaction

Flowtime

A focus timer that keeps session history on your device and adapts breaks to the time you worked. It stays accurate through sleeping tabs, closed browsers, and interruptions.

Built with
Next.js · TypeScript · localStorage · Service Worker · Vitest
Read case study Open project View code
View all work

02 / Outside work

Some of what I’m into lately.

Recent building

Live · all contributions1004 contributions over the past yearPrivate contributions are part of the total; I keep their repositories private.
0private
GitHubUpdated 25 Sept

Local signal

Current note
London skyline from the Thames, with St Paul’s Cathedral and the City beyond
London · home base
Working on a few things here.

Training

Typical weekMy weekly training plan
MonFull body
TueZone 2 run
WedFull body
ThuInterval run
FriFull body
SatZone 2 rowing machine
SunInterval assault bike
My weekly planMaintained by hand

Fantasy football

Live
Weekly matchupWeek 3
My team21.0points
Opponent3.8points
0–2 this seasonI share my score here; the other managers’ names stay private.
SleeperUpdated 25 Sept

Books, films, music and history

A few things I enjoy outside work.

GoodreadsCurrently readingDark Age001

Currently reading

Dark Age

The #1 New York Times bestselling author of Morning Star returns to the Red Rising universe with the thrilling sequel to Iron Gold. For a decade Darrow led a revolution against the corrupt color-coded Society. Now,…Updated 25 SeptView on Goodreads
LetterboxdMost recently watchedThe Invite002

Most recent film in my Letterboxd diary

The Invite

I keep my rating and notes on Letterboxd.2026 · 4.0 out of 5Updated 25 SeptView on Letterboxd

Music · Spotify

My playlist

What I’m listening to

I add songs as I find them.Open playlist in Spotify

History

This week in history

03 / Experiments

Things I’m trying out.

Side projects, interface studies, and notes from things I’m making.

01Warm illustrated portrait of the eccentric Professor Past

History experiment

Ask Professor Past

This is V1 of Professor Past: a history chatbot where you can ask an eccentric professor about the past.View source
02Aerial view of a football stadium and marked fieldFootball · Data · Prediction

Fantasy football models

I’m exploring matchup views, rankings, and draft tools for my Sleeper redraft league, with a small prediction model as a possible next step.Read experiment note

The homepage shows the live matchup when Sleeper is connected. I keep the other managers anonymous, and I’m still experimenting with rankings and predictions.

03Flowtime focus timer interface showing an idle sessionInteraction · Craft · Notes

Interface studies

Small interface studies about states, controls, motion, and the details that make a product easier to use.Read experiment note

I’ll add a study when there’s a decision or lesson worth sharing, including ideas that didn’t work.

04 / About

A bit about me.

I’m based in London, where I work on high-performance pricing and risk systems. Outside work, I build my own products end to end: I find the problem, shape the experience, write the code, and work through the awkward parts until they make sense.

I like software that respects the person using it: clear about what’s happening, dependable when things go wrong, and careful with the details.

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Elias Bennett smiling in a white dinner jacket
Off duty, approximately

Career path

My career so far.

From healthcare marketing to full-stack software and high-performance pricing and risk systems.
  1. 01

    Marketing Executive

    Optegra Eye Healthcare & Kensington Medical

  2. 02

    Full Stack Software Engineer

    Joveen

  3. 03

    Present

    Software Engineer

    BNP Paribas CIB

    High-Performance Computing, Pricing and Risk Systems · through _nology

05 / Contact

Get in touch.

Email me eliasthebennett@gmail.com