Hello
Elias Bennett
Software Engineer at BNP Paribas CIB
In C# and Java, on CPU and GPU. I’ve won BNP’s Early Careers digitisation competition and a Take Ownership award.
Software engineer · BNP Paribas CIB · Jul 2025 – now
At work, I’m learning to build systems that hold up. On my own products, I’m learning what’s worth building. I want to be genuinely good at both.
Systems that hold up.
I shipped a change to live pricing behind a flag, switched off by default, with an end-to-end test nobody asked for.
The BNP Paribas story →Deciding what’s worth building.
Before I built Threshold, I wrote 57 user stories and what was out of scope.
Things I make ↓Building with AI, and bringing people with me.
I built a phase-gated workflow, from grilling the problem to a health review, and showed it to teams across the department. Several now use it.
The BNP Paribas story →History, then marketing, then code. Each move was towards the work I liked most.
06 things I’ve built · 03 I’m proudest of
I build everyday software, and make complicated things feel simple.
I take ideas all the way through: deciding what’s worth making, designing it, building it across the stack, and finding out whether it actually works.
Three habits, and where I picked them up.
Threshold started because my friends had no clear idea what renting would cost by area. Flowtime started because Pomodoro kept cutting me off mid-flow.
Before I build, I write down the problem, who it’s for, and what’s out of scope. Threshold had 57 user stories before any code.
I learned this in marketing, running split tests and conversion dashboards. At BNP Paribas I co-built a dashboard from users’ requirements that cut a 30–40 minute data load to under 5.
People in their 20s and 30s make the decision to move out … without a clear, honest view of what it will actually cost.
What my own time looks like this week.
Zone 2 means slow on purpose.
12 October
Jeanne Geneviève Labrosse becomes the first woman to jump from a balloon with a parachute.
12 October 1799
Read on Wikipedia
The Soviet Union launches the Voskhod 1 into Earth orbit as the first spacecraft with a multi-person crew, and the first flight without pressure suits.
12 October 1964
Read on Wikipedia
The second Chinese human spaceflight, Shenzhou 6, is launched, carrying two cosmonauts in orbit for five days.
12 October 2005
Read on Wikipediaeliasb.dev
Personal site for Elias Bennett: the work, how I build it, and what I do off the clock. Next.js, Playwright-tested.
View on GitHub1,548 contributions in the past year
Use the arrow keys to move between days.
Got an idea, a project, or just want to talk about building things? Email’s the best way to reach me.
