Senior Staff Full Stack Engineer, tem
Origination & New Products
£117.8k
+ Equity
Energy transactions platform for renewable energy
Open for applications
Energy transactions platform for renewable energy
101-200 employees
Open for applications
£117.8k
+ Equity
101-200 employees
Company mission
Rebuilding the energy transaction system, making it transparent and fair.
Role
Who you are
- Proven technical leadership at Staff or Senior Staff level, with evidence of leading complex, ambiguous initiatives to real business impact - not just technical execution in isolation
- Comfort operating without a spec: able to take a broad, undefined opportunity and shape it into something buildable
- Sound commercial judgement - able to reason about deal risk and revenue impact, not just delivery
- Deep enough platform fluency to integrate against a complex, business-critical system
- Track record leading a squad or team technically through direction and mentorship, without necessarily holding formal people-management responsibility
- Strong written and verbal communication - comfortable being the technical voice in front of commercial stakeholders and, over time, external partners
- Comfortable in our core stack: Python, AWS serverless (Lambda, API Gateway, DynamoDB, EventBridge), and event-driven architectures - the same stack Rosso and the rest of Sell Side build on
Desirable
- Experience in energy, fintech, or another regulated, high-stakes commercial domain
- Experience taking a product or company into a new international market
- Exposure to workflow orchestration, event-driven systems, or real-time pricing engines
- Experience originating new product lines from scratch rather than only scaling existing ones
What the job involves
- We're hiring a Senior Staff Software Engineer for Origination & New Products
- This is a hands-on technical leadership role, not a people-management one. You'll lead the Origination & New Products squad through ambiguous, no-precedent build work - deep Rosso integration, pricing capability, and deal-gating risk tooling. You won't own hiring, performance, or comp for anyone in the squad; you'll lead through technical direction, judgement, and execution
- Beyond the squad, you'll be a strategic partner to the Engineering Manager, turning company-level targets into engineering outcomes - starting with growing origination volume through new products over the first 12 months, and later supporting the team as Sell Side expands internationally
- You'll lead a new three person squad to help you deliver your goals
- Own the delivery for new product categories
- Lead technically through execution - design, build, and ship alongside the squad, not just direct it
- Translate ambiguous, commercially-driven problems into a shape the squad can deliver against
- Partner with commercial and product stakeholders to keep new-product work tied to real pipeline outcomes
- Mentor the squad's engineers and raise technical standards, without owning their performance or career progression
- You will report into the Engineering Manager, Sell Side
- Lead through execution
- Drive the Origination & New Products squad's technical direction on deep integrations with other internal services
- Stay hands-on: design, build, and review the hardest parts of the new-product build sequence yourself
- Take a company target ("grow origination volume through new products") and break it into a sequenced, deliverable plan without needing to be told how
- Build for ambiguity and risk
- Design systems for categories that don't exist yet at tem - Unlocking TWh’s of new pipeline - where the spec is being written as you go
- Make judgement calls on commercial risk in deal-gating tooling, not just deliver what's asked
- Prevent domain drift as new product categories are added, keeping shared language and clear boundaries
- Partner beyond the squad
- Work directly with the Engineering Manager and commercial stakeholders to keep new-product delivery tied to origination pipeline outcomes, not just shipped features
- As Sell Side expands internationally, represent the technical view in conversations with new-market stakeholders and partners
- Mentor engineers in the squad and raise engineering standards, while staying on the individual-contributor track
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 (75 Mins). You’ll meet with potential peers in this session and will discuss technical topics and experiences
- Bar Raiser 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
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
$14.1m
SERIES A
Jun 2023
$3.4m
SEED
Total funding: $17.6m
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.
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