Senior Staff Full Stack Engineer, tem
£129.5k
+ Equity
Energy transactions platform for renewable energy
Posted today
Energy transactions platform for renewable energy
21-100 employees
Posted today
£129.5k
+ Equity
21-100 employees
Company mission
Rebuilding the energy transaction system, making it transparent and fair.
Role
Who you are
- 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
- 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
Desirable
- Experience scaling systems from early product-market fit to multi-product platforms
- Exposure to regulated industries (e.g., energy, fintech, govtech)
- Familiarity with real-time pricing engines, workflow orchestration, or AI/agentic systems
- Experience improving engineering org design, team topology, or platform strategy
What the job involves
- We’re looking for a Senior Staff Engineer to shape the technical direction of our customer acquisition and customer success platforms, accelerating product delivery while building the architectural foundations for long-term scale
- This is a company-level technical leadership role. You’ll operate as a force multiplier across multiple teams — setting architectural vision, driving cross-platform initiatives, and ensuring our systems are resilient, extensible, and built for rapid growth
- In your first 12 months, you’ll lead the design and delivery of foundational systems that redefine how brokers, customers, and internal teams interact with energy services — from real-time pricing and quoting engines to intuitive self-serve platforms and intelligent internal tooling
- You’ll partner with Engineering, Product, and Leadership to ensure we are building the right systems, in the right way, for the next stage of our growth
- This role combines deep hands-on engineering with strategic technical ownership and organisational influence
- 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
Application process
- 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
- First call with our Talent Team (30 Mins). This is to understand your experience, motivations, and discuss the role in more detail
- Behaviour Interview with our Engineering Managers (60 Mins). This is your chance to really understand the role, the expectations, and ensure alignment on ways of working
- Technical Interview with the Team (90 Mins). You’ll meet with potential peers in this session and will discuss technical topics and experiences
- Culture-Add Interview with Stakeholders (45 Mins). The final session will be with two cross-functional stakeholders, and will explore how your values align with ours, and is designed to be a genuine two-way conversation, your chance to understand what it’s really like to work at tem
Our take
tem is a next-gen energy transactions company that changes the way renewable energy is bought, sold and powered. Rebalancing the playing field away from "Big Energy", tem creates affordable, traceable and smart energy transaction management tools.
The company provides businesses and consumers with access to the same financial benefits as Big Energy companies by distributing its own purchased energy to customers. Once they’re signed up, customers are matched with a suitable generator, and the tem platform helps execute contracts, take payments, and manage invoicing.
This is a truly disruptive concept, and is proving to be a successful one. tem currently processes over £50 million in direct transactions and saves millions for over 1000 UK businesses wanting to switch from traditional utilities tied to the wholesale market. Whilst UK consumers are notoriously hesitant to switch providers, recent soaring energy prices is luring many into giving it a go.
Steph
Company Specialist at Welcome to the Jungle
Insights
40% female employees
Company
Employee endorsements
Challenging work
"The projects I have worked on at tem. have involved solving greenfield problems. Each project has challenged me in a different way keeping the work..."
Funding (last 2 of 3 rounds)
Sep 2024
$14.3m
SERIES A
Jun 2023
$3.4m
SEED
Total funding: $17.9m
Company benefits
- 25 days holiday
- Day off on your birthday
- Fully remote - expect quarterly meet ups with your team
- Personal office budget £1200 / 1400€ per year
- Paid for company trip twice a year. Previous locations included Barcelona, Budapest and Marrakech.
- Wellbeing allowance of £150 / 170 € per month to spend on your wellbeing
- A generous options (stock) package
- Salary benchmarking twice a year. We aim to pay at the upper percentile (75th percentile) of the market, using London-based benchmarks. One of our core pay principles is “Same work. Same base pay.” This means we use spot rates instead of broad salary bands: everyone doing the same role at the same level earns the same base salary.
Company values
- Innovate with purpose
- Go all-in
- Keep it real
Company HQ
Nine Elms, London, UK
Articles
Leadership
Joe McDonald
(Co-Founder & CEO)Resident CEO, Joe leads the creative vision behind tem. the brand, product and its platform. He is a passionate visionary who loves to climb mountains and has the most adorable dog.
Jason Stocks
(Co-Founder & Chief Commercial Officer)Jason is a world-class commercial leader with proven track scaling up high performing diverse teams. He is also a power house of high energy, high enthusiasm and a secret scuba diver instructor.
Bartlomiej Szostek
(Co-Founder & CTO)Bartek is an innovative programmer, with a craving for maximum performance, clean code and good architecture. He has a very cute baby girl who loves to join in on our calls - we’re training her young!
Ross Mackay
(Co-Founder)Data scientist, software engineer + physics whizz - Ross currently lives in the west country and will beat you hands down in a game of monopoly deal.
Diversity, Equity & Inclusion at tem
Charlie Stephenson (Head of People)
- Tem is all about championing small business communities, fighting for transparency and advocating for fairness in the broken energy sector. We put these principles at the heart of our business model and work hard to ensure our platform is accessible and simple for all.
- We're fully remote to ensure everyone can thrive in an environment that works best for them. Whether you prefer working from home in a Disney onesie or going to a bustling cafe, we support whatever helps you be your most effective self. Being fully remote also means we're lucky enough to hire team members from different countries and cultures and we spend time every Monday having a social call to share what makes us tick.
- We care about you and live our value of keeping it real. This means actively seeking your feedback through quarterly pulse surveys and implementing initiatives that truly matter to you. Anyone who joins us has a voice and one that is heard and valued.
Share this job
View 14 more jobs at tem