Senior Full Stack Engineer (£400-£600 / day) at Volter

Job Title

Senior Full Stack Engineer (£400-£600 / day)

Salary

£400-£600 / day

Company Description

Volter is a climate-tech platform backed by top-tier VCs, building a modern B2B energy solution described as "Octopus Energy for industry." Founded by experienced entrepreneurs who have scaled multi-billion dollar businesses, Volter provides radical transparency and data-driven renewable energy products to help commercial customers cut costs and carbon without legacy complexity.

Job Description

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.

Location

London, UK

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.

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.

The ideal candidate

• 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.