
Senior Staff Full Stack Engineer
Overview
We have built the new way for energy to be transacted. tem exists to fix a creaking energy market.
Job Description
Our product, RED™, is built on a proprietary pricing engine that bypasses the wholesale market, enabling businesses to buy energy produced by renewable generators directly.
Responsibilities
- - Set Technical Direction: Define and evolve the architecture across our acquisition and success platforms, ensuring scalability, resilience, and clarity of ownership across teams.
- - Drive Multi-Team Initiatives: Lead complex, cross-functional engineering efforts that span teams and systems — aligning stakeholders, reducing ambiguity, and delivering high-leverage outcomes.
- - Build & Ship: Remain deeply hands-on — designing, coding, and reviewing critical components across back-end systems, APIs, infrastructure, and front-end applications.
- - Strengthen Foundations: Improve platform reliability, developer experience, observability, testing strategy, and deployment practices to enable faster, safer shipping across the organisation.
- - Accelerate Product Innovation: Partner closely with Product and Design to translate ambiguous problem spaces into scalable technical solutions, balancing speed with long-term quality.
- - Multiply Impact: Mentor Staff and Senior Engineers, raise engineering standards, and act as a trusted technical advisor to leadership.
- - Plan for Scale: Anticipate bottlenecks before they emerge — proactively designing systems, processes, and data flows that support rapid company growth.
Required Skills
- - Senior technical leadership experience: Experience operating at Staff+ or Senior Staff level in a high-growth startup or scale-up, with clear evidence of organisation-wide impact.
- - Architectural depth: Proven ability to design and evolve complex distributed systems spanning APIs, event-driven workflows, data systems, and front-end applications.
- - Multi-team influence: Experience leading cross-team initiatives and driving alignment across engineering, product, and business stakeholders.
- - Modern tech expertise: Deep experience with: Python and/or Node.js, AWS serverless architecture (Lambda, API Gateway, DynamoDB), Event-driven systems and asynchronous workflows.
- - Strong front-end fluency: Confident architecting and building modern, performant React applications that integrate seamlessly with complex back-end systems.
- - Product & business alignment: Demonstrated ability to connect technical decisions to business outcomes and customer experience.
- - Navigating ambiguity: Comfort operating in evolving environments, defining direction where it doesn’t yet exist.
Benefits
- - Competitive salary - our current band for this role is £129,500 or equivalent in local currency.
- - Stock Options - everyone on the team has ownership in our mission.
- - 25 days holiday + public holidays - Swap public holidays for ones that matter most to you. Plus, get an extra day off for your birthday 🎉.
- - Remote & flexible working - We’re fully remote with clear core hours, and no internal meetings on Friday afternoons.
- - Home working & wellbeing budgets: Up to £1,200 / €1,200 annually to upgrade your remote setup (co-working passes, equipment, etc.).
- - Up to £150 / €150 monthly on anything that supports your wellbeing - from therapy to gym memberships to meditation apps.
About the company
tem is reinventing how the world transacts energy to make low-cost, transparent electricity universally accessible. Built to fix a broken wholesale system stacked with middlemen and hidden markups, tem uses AI to power a new transactions infrastructure that lets businesses buy electricity directly from renewable generators. Its flagship product, RED™, delivers fully auditable, transparent pricing—giving customers real ownership over where their energy comes from while ensuring fair compensation for generators. Since launching in 2021, tem has helped UK businesses cut energy costs by up to 30%, saved over £25 million across its network, and is backed by leading investors including Atomico and Albion as it builds a more direct, decentralised, and trusted energy market.
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