Join Volter’s founding team as a Senior Full Stack Engineer on a six-month contract to build the infrastructure for clean energy. You will own features end-to-end—from backend services in Go/Python to frontend interfaces in React—while developing complex ETL pipelines for smart-meter data, accelerating the global transition to renewables through high-velocity engineering.
Senior Full Stack Engineer at Volter
Join Volter, a high-growth climate-tech startup founded by experienced entrepreneurs who have scaled businesses to multi-billion dollar valuations. As a Senior Full Stack Engineer on the founding team, you’ll play a pivotal role in building 'Octopus Energy for industry,' a platform that replaces legacy B2B energy systems with transparent, data-driven solutions. Backed by top-tier climate VCs, Volter offers a high-autonomy environment where you’ll ship product features in days, not weeks. This 6-month contract is a unique opportunity to own end-to-end delivery of pricing and forecasting tools that help businesses transition to renewable power and solve the climate crisis.
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Location
London, United Kingdom
Compensation
£400-£600 / day
Company
Volter
Role overview
Volter is on a mission to make energy cheaper, cleaner and simpler for businesses everywhere.
Volter is a London-based top-tier climate VC-backed B2B energy tech platform. The energy transition is a huge and vital opportunity, but it’s currently too difficult for commercial & industrial companies to achieve. Historically, the energy industry has been too opaque, complex and lacking in trust. We’re fixing that. We aim to be the “Octopus Energy for industry”: a modern tech platform providing new renewable energy products with radical transparency, accelerating deployment of renewables and helping customers cut costs and carbon without complexity.
What you will do
- Design and build backend services and APIs for billing, pricing, and forecasting using Go or Python, ensuring high reliability and performance for data-intensive operations.
- Develop user-facing flows in TypeScript and React while building ETL pipelines to ingest time-series data from smart meters and market price feeds.
- Collaborate closely with founders and data scientists to implement feature serving and real-time scoring, making pragmatic trade-offs to deliver value to customers quickly.
Who this is a fit for
- Proven track record of shipping production software in early-stage startups, with a strong backend focus and proficiency in Go, Python, TypeScript, and React.
- Deep experience with data-intensive architectures, including schema design, query optimization, and handling complex time-series data or half-hourly utility data feeds.
- Exceptional communicator who thrives in high-autonomy environments, balancing rapid prototyping with infrastructure-as-code, CI/CD, and security-by-default practices to raise the team’s engineering bar.
Why this role is remarkable
- Work directly with seasoned founders who have previously scaled businesses to multi-billion dollar valuations and are now tackling the climate crisis with top-tier VC backing.
- Join a high-velocity founding team where you will ship impactful product features in days rather than weeks, maintaining genuine end-to-end ownership of the platform.
- Solve complex technical challenges in the renewables space by building the first transparent, data-driven platform for B2B energy procurement, pricing, and forecasting.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
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What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Volter wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.