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We are rebuilding the energy transaction system to be transparent and fair, putting power back into the hands of customers and addressing the critical problem of access to low-cost electricity. Our AI-native transaction infrastructure reinvents how electricity is bought, sold, and priced, cutting out inefficient fees and bringing transparency and fairness at scale. We are seeking Full Stack Engineers to help build the core products and internal platforms, contributing to areas like Platform, Billings, Payments, Customer Acquisition, and Customer Success. Responsibilities include developing full-stack features across modern front-end frameworks and serverless back-end systems, shaping user interfaces and tools, improving internal tooling and engineering workflows, collaborating cross-functionally with Product and Design, and maintaining high standards of code quality and testing.
📈 Who We Are:
We are rebuilding the energy transaction, making it transparent and fair.
Our goal is to put power back where it belongs, in the hands of customers and to take on one of the most critical problems of our century, access to low cost electricity.
tem exists to fix a broken global energy market that’s long favoured legacy operators, intermediaries, and opaque pricing. Today’s electricity system was not designed for rapid decarbonisation, AI-driven efficiency or fair access for the actual users - businesses and generators.
We’ve built the first AI native transaction infrastructure to reinvent how electricity is bought, sold and priced. Our technology is designed to cut out the inefficient fees, automate complex market flows, and bring transparency and fairness to energy transactions at scale.
In late 2025, after extraordinary growth, we closed a $75 million Series B - led by Lightspeed Venture Partners with participation from Albion, Atomico, Allianz, Hitachi Ventures, Hitachi Ventures, Schroders Capital and others - positioning us for global expansion, deeper product innovation and category leadership.
We’re scaling internationally and building toward a future where AI-driven infrastructure is foundational to electricity markets worldwide.
Since launch, our modern utility product, known as RED, has already facilitated thousands of business customers and billions in energy transaction value, proving that modern software and AI can transform an industry built on legacy systems.
At tem, we’re not just building another energy company, we’re rearchitecting market infrastructure so that transparency, efficiency and sustainability become the default, not the exception.
We’re looking for Full Stack Engineers to help build the systems that power tem's core products and internal platforms. We’re hiring across several teams - including Platform, Billings, Payments, Customer Acquisition, and Customer Success - all of which play a critical role in delivering seamless, modern energy technology.
As a Full Stack Engineer, you’ll contribute to designing and building features that help brokers, customers, and internal teams work smarter and faster. Depending on your team, this could include improving developer tooling, supporting billing and payments infrastructure, or building intuitive customer-facing experiences.
In your first 12 months, you might:
Across all teams, you’ll be joining a group that values ownership, clarity, and impact - with opportunities to grow your skills while helping build systems that support our rapid growth.
Must-Haves:
Desirable:
We review salaries twice a year using real-time market data, with transparent, consistent pay for the same role and level.
Up to £1,200 / €1,200 annually to upgrade your remote setup (co-working passes, equipment, etc.).
Our processes normally take around 2-3 weeks from first call to offer - please let us know about any adjustments to timelines that may be required.
We welcome applications from people of all backgrounds, experiences, and identities, including those that are traditionally underrepresented in the tech and energy sectors. If you’re excited about this role but not sure you meet every requirement, we’d still love to hear from you. Your unique perspective could be exactly what we’re looking for.