Senior Platform Software Engineer: Build a Greenfield Data Platform for Net Zero

La Fosse; United Kingdom; Remote; GBP 90,000 - 110,000; Full time

Benefits offered by this job

Profit share

Private healthcare

Dental

Pension

Wellbeing budget

Remote-first

Job summary

La Fosse is building a greenfield energy data platform with a founding engineering team. The Senior Software Engineer will design the core platform, own deployment and scaling, and mentor juniors, while collaborating with energy modellers to translate requirements into working software.

The role is remote-first in the UK, involves leading end-to-end technical work, and leverages Python as the primary language with Java/C# where needed.

Qualifications

• Strong commercial experience in Python, or Java or C#, with willingness to work in Python
• Hands-on experience deploying and running services on AWS or Azure
• CI/CD pipelines you have built or owned, from commit to production
• Experience leading a piece of technical work end to end (service, migration, or platform component)

Responsibilities

• Design and build the core platform and its services, from architecture to production
• Own how services are deployed, hosted, scaled and monitored
• Build shared libraries, patterns and tooling for the team
• Set up and improve CI/CD and infrastructure as code
• Shape technical decisions and communicate trade-offs to the team and stakeholders
• Work directly with energy modellers to translate needs into software
• Mentor junior engineers and help set engineering standards

Skills

Python

Java

C#

AWS

Azure

CI/CD

Leadership

Tools

Databricks

Spark

React/TypeScript

Copilot

Job description

Senior Software Engineer (Energy Data Platform)

Remote-first (UK) · Up to £100,000 base + profit share · Greenfield build

About the team

Our client is a global management consultancy whose energy practice leads the world in energy market modelling. Its models help energy companies, investors and governments plan the move to net zero.

It is creating a new Data and Processing Platform team, and you’d be one of its founding engineers. The platform will process everything from research papers to terabytes of hourly energy scenarios projected 50+ years ahead. It starts with internal modellers, will grow to serve users in the US, Australia and Singapore, and will eventually open up to clients.

You’ll report to the Engineering Lead and share the design and build with them, in a small team of five that is set to grow.

What you’ll do

• Design and build the core platform and its services, from first architecture to production
• Own how your services are deployed, hosted, scaled and monitored
• Build the shared libraries, patterns and tooling the rest of the team builds on
• Set up and improve CI/CD and infrastructure as code
• Shape technical decisions and talk the team and stakeholders through the trade-offs
• Work directly with energy modellers to turn their needs into working software
• Mentor junior engineers and help set the team’s engineering standards

What you’ll need

• Strong commercial experience in Python, or in Java or C# with a willingness to work in Python
• Hands-on, recent experience deploying and running your own services on AWS or Azure
• CI/CD pipelines you’ve built or owned, which you can walk through from commit to production
• Experience leading a piece of technical work end to end, whether a service, a migration or a platform component

Nice to have, not essential

• Databricks, Spark or other data-platform experience
• React/TypeScript for lightweight internal tools
• AI-assisted development (Copilot, Claude or similar)
• An interest in energy or decarbonisation

The stack

Python for the platform, with Java where it integrates with Databricks. It runs mainly on AWS, with Azure for identity. CI/CD is on Azure DevOps, infrastructure is written as code, and internal tools use React/TypeScript. Every engineer gets GitHub Copilot with the latest models from day one.

What’s in it for you

• A founding role on a greenfield platform, with real influence over the architecture and tooling
• Work that directly supports decarbonising the energy industry
• Up to £100,000 base plus profit share
• Pension, private healthcare and dental, and a flexible wellbeing budget
• Remote-first, with occasional London office days, and travel and accommodation covered if you’re outside London
• A collaborative, curious team that encourages learning and new technology