full stack developer for energy transactions

tem is rebuilding energy transaction infrastructure to make electricity markets more transparent and fair. Its AI-native technology automates complex market flows and supports the buying, selling, and pricing of electricity; its RED utility product has facilitated thousands of business customers and billions in energy transaction value.

• Own architecture-level decisions for integration-heavy systems, reasoning about boundaries, contracts, and failure modes
• Turn undefined, commercially driven problems into shippable plans within the direction set by the squad lead
• Deliver integrations across dependencies owned by other teams, including Rosso, Data, and Billing
• Design, build, and ship the hardest parts of new-product development, primarily on the backend and in React/TypeScript when needed
• Write clean, well-tested code, contribute to code reviews, and improve team practices and documentation
• Help launch the first new product category and generate qualified pipeline within 6 months
• Help automate tendering to increase the volume the team can quote
• Help productise a manual, error-prone pricing process
• Design deal-gating risk tooling for new commercial risk categories

• Deep backend and systems-design expertise, with experience owning architecture-level decisions on complex, integration-heavy systems
• Comfortable with Python, AWS serverless (Lambda, API Gateway, DynamoDB, EventBridge), and event-driven architectures
• Able to work without a full specification and turn an ambiguous problem into a shippable plan
• Experience delivering work where a critical dependency is owned by a team outside the candidate’s authority
• Product-delivery experience as a Full Stack or Backend Engineer in a startup or fast-paced product environment, owning complex projects from start to finish
• Будет плюсом: mentoring engineers or setting technical direction, experience in energy, fintech, or another regulated high-stakes commercial domain, workflow orchestration, event-driven systems, real-time pricing engines, originating new product lines from scratch

• Competitive salary: £104,000 or equivalent in local currency
• Stock options
• 25 Days of holiday plus public holidays; public holidays can be swapped, with an extra day off for your birthday
• Fully remote and flexible working, with clear core hours and no internal meetings on Friday afternoons
• Annual home-working and wellbeing budgets: up to £1,200 / €1,200 annually for remote setup and up to £150 / €150 monthly for wellbeing
• The interview process normally takes around 2–3 weeks from first call to offer