At a Glance
- Tasks: Develop and maintain impactful software for low-carbon heating solutions.
- Company: Join Heat Geek, a leader in sustainable technology and innovation.
- Benefits: Generous salary, health insurance, shares, and a vibrant work environment.
- Other info: Hybrid role in a dynamic climate tech hub with great team culture.
- Why this job: Make a real difference in tackling climate change while advancing your career.
- Qualifications: Senior fullstack development experience with strong coding skills required.
The predicted salary is between 60000 - 80000 £ per year.
What We Do
At Heat Geek, we are tackling one of the UK’s biggest carbon contributors: home heating. 20% of all UK carbon emissions stems from home heating – and that contribution is even bigger on a global scale. At Heat Geek, we are changing that. By simplifying a traditionally complex industry and revolutionising the technology used by installers, we’re making low-carbon heating mainstream. We are on track to prevent 1,000,000 kg of carbon from entering our atmosphere in Q1 of 2026, and we won’t stop there!
Join Us!
People are at the core of who we are and what we do. From decreasing homeowners’ energy bills to help with the cost of living, to empowering talented heating engineers to perform outstanding installations, to ensuring a greener world for all of us, we believe in the power of what we can all do together. – And we need passionate, talented, hard working people to be a part of this journey.
Your Mission
Our Heat Geek community is excited to bring a Senior Fullstack Developer into the team — a role that’s critical to how we grow and scale our platform. This is your chance to own meaningful product areas end-to-end, working across frontend, backend, and infrastructure to ship software that actually runs, actually helps users, and actually makes an impact. If you love the idea of steering real product decisions, getting stuck into code, and balancing technical quality with commercial pragmatism, this role is for you. If you’re reading this and it resonates, we know you could do this job anywhere — but we want you to do it HERE, with us, because we need persevering teammates who care deeply about making a real difference in the world.
Role Outputs
- Own features and systems end-to-end, from discovery through to production and iteration
- Build, maintain, and improve production-ready frontend and backend systems
- Work hands-on in the codebase — this is a coding-first role
- Collaborate closely with the existing Product and Tech teams to solve real user problems
- Quickly pick up new concepts, technologies, and domain knowledge when needed
- Contribute to technical direction and raise the quality bar of the entire team’s output through example, not ceremony
- Help ensure the platform runs, scales, and supports Heat Geek’s mission as we grow
Candidate Requirements
- Senior-level experience as a fullstack developer, with strong hands-on coding ability
- Proven ability to ship and maintain production software
- Demonstrated pragmatism — you know when to refactor, when to ship, and when to leave things alone
- Successful mentorship experience
- Quick learner who can pick up new concepts and technologies efficiently
- Strong ownership mindset — you don’t wait to be told what to fix
- Clear communication skills and collaboration mentality
It’s a bonus if you have…
- Experience with Django
- Real comfort across the full stack, happily spending time in both the frontend and backend
- Experience with cloud / infrastructure, ideally GCP
- Industry experience in renewable energy, heat pumps, utilities, or construction
- Been in product-focused engineering environments
- Worked in a startup or scale-up environment
We believe great teams are built from different ways of thinking, learning, and living, and as such, we strive to build an organisation where people can show up as themselves. – Even if you don’t tick every box listed above, but are passionate about the work that we are doing and believe that you can make a positive impact here, we’d love to hear from you. So please drop us a message or share more detail in your application!
Ways of Working + Benefits
This is a 3-day-in-the-office hybrid role where you will work with the team at our office in Sustainable Ventures in Waterloo, Europe's biggest climate tech hub. It's a 5-minute walk from Waterloo Station and an energising space for anyone working on climate change. And don’t get us started on the epic view!
Some of our measurable benefits include:
- £5,000 contribution towards your own heat pump installation
- Shares in the company, allocated under a tax-incentivised scheme
- Salary that’s evaluated regularly, and based on skills, impact, and role scope—not negotiation tactics
- Private medical & dental insurance
- Learning and development budget
- Annual summer retreat
- Gym membership contribution
- Season ticket loan
- Cycle to work scheme
- Yoga, run club and social events with other sustainability startups in our co-working space
- …alongside monthly socials and regular collaboration opportunities with a team that’s passionate, hardworking, and kind.
Senior Fullstack Developer in London employer: Geek+
At Heat Geek, we are not just tackling the pressing issue of home heating emissions; we are fostering a vibrant work culture that prioritises passion and collaboration. Located in the heart of Europe's largest climate tech hub, our team enjoys a hybrid working model, competitive benefits including a £5,000 heat pump installation contribution, and ample opportunities for personal and professional growth. Join us to make a meaningful impact while working alongside like-minded individuals dedicated to creating a greener future.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Fullstack Developer in London
✨Tip Number 1
Network like a pro! Get out there and connect with people in the industry. Attend meetups, tech events, or even online webinars. You never know who might have a lead on your dream job at Heat Geek!
✨Tip Number 2
Show off your skills! Create a portfolio that highlights your best projects, especially those that align with Heat Geek's mission. A well-crafted GitHub profile can really make you stand out to us.
✨Tip Number 3
Prepare for the interview by understanding our mission and values. We love candidates who are passionate about making a difference in the world. Be ready to discuss how your experience as a fullstack developer can contribute to our goals!
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows us you're genuinely interested in joining our team at Heat Geek.
We think you need these skills to ace Senior Fullstack Developer in London
Some tips for your application 🫡
Show Your Passion:When you're writing your application, let your enthusiasm for tackling climate change shine through! We want to see how much you care about making a difference in the world, so don’t hold back on sharing your motivation for joining Heat Geek.
Tailor Your Experience:Make sure to highlight your relevant experience as a fullstack developer. We’re looking for someone who can own features end-to-end, so share specific examples of projects where you've done just that. The more tailored your application, the better!
Be Clear and Concise:We appreciate clear communication, so keep your application straightforward and to the point. Use bullet points if it helps, and make sure to emphasise your key skills and experiences that align with our mission at Heat Geek.
Apply Through Our Website:Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for the role. Plus, it shows you’re keen to be part of our community right from the start!
How to prepare for a job interview at Geek+
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially Django and cloud infrastructure. Brush up on your fullstack skills and be ready to discuss how you've used them in past projects.
✨Show Your Passion for Sustainability
Heat Geek is all about making a difference in the world. Be prepared to share why you're passionate about renewable energy and how your work can contribute to reducing carbon emissions. This will show that you align with their mission.
✨Prepare for Real-World Scenarios
Expect to tackle practical coding challenges or case studies during the interview. Practice coding problems that require you to think critically about both frontend and backend solutions, as this role demands hands-on coding experience.
✨Demonstrate Collaboration Skills
Since the role involves working closely with product and tech teams, be ready to discuss examples of how you've successfully collaborated in the past. Highlight your communication skills and any mentorship experiences to showcase your teamwork mentality.
