At a Glance
- Tasks: Design, build, and maintain high-quality iOS applications for a greener future.
- Company: Join Heat Geek, a leader in low-carbon heating technology.
- Benefits: £5,000 heat pump contribution, shares, private medical insurance, and more.
- Other info: Hybrid role in Europe's biggest climate tech hub with a vibrant team culture.
- Why this job: Make a real impact on climate change while developing innovative mobile solutions.
- Qualifications: Strong knowledge of Swift and a passion for building great software.
The predicted salary is between 28800 - 48000 £ 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 an iOS Developer into our team. This is your opportunity to take on a role that’s vital to how we build and evolve Heat Geek’s mobile experience. As an iOS Developer, you’ll help design, build, and maintain high-quality iOS applications that support both our internal teams and our wider Heat Geek community. You’ll work closely with product, design, and backend engineers to solve complex, real‑world problems — turning ambiguity into reliable solutions.
Build, ship, and maintain high‑quality iOS applications using modern Apple technologies.
- Take ownership of features from concept through to production and iteration.
- Collaborate closely with product managers, designers, and backend engineers to deliver impactful user experiences.
- Write clean, testable, and maintainable code that scales as our products grow.
- Debug, improve performance, and continuously raise the quality bar of our iOS codebase.
- Contribute to technical discussions, architectural decisions, and best practices within the engineering team.
Candidate Requirements
- Strong knowledge of Swift and Apple’s iOS ecosystem.
- Ability to take ownership of problems and work autonomously from idea to implementation.
- Comfort working in complex, non‑trivial problem domains.
- A demonstrated passion for learning, improving, and building great software.
It’s a bonus if you have…
- Experience with modern iOS technologies such as SwiftUI, Combine, TCA, or ARKit.
- Exposure to full‑stack development or an interest in how mobile apps interact with backend systems.
- Experience with heat pumps, renewable energy, construction, or utilities.
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.
- 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.
iOS Developer in London employer: Heat Geek
At Heat Geek, we are not just tackling the challenge of home heating; we are fostering a vibrant work culture that prioritises sustainability and employee growth. Located in the heart of Europe's largest climate tech hub, our team enjoys a hybrid working model, competitive benefits including a £5,000 contribution towards heat pump installation, and opportunities for professional development, all while making a tangible impact on the UK's transition to low-carbon heating.
StudySmarter Expert Advice🤫
We think this is how you could land iOS Developer in London
✨Tip Number 1
Network like a pro! Reach out to current employees at Heat Geek on LinkedIn or other platforms. A friendly chat can give you insider info and might just get your foot in the door.
✨Tip Number 2
Show off your skills! If you’ve got a portfolio of iOS projects, make sure to highlight them. Share links during interviews or even in casual conversations to demonstrate your expertise.
✨Tip Number 3
Be ready to discuss real-world problems! Heat Geek is all about tackling complex issues, so come prepared with examples of how you've solved tricky challenges in your past work.
✨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 you’re genuinely interested in being part of our mission.
We think you need these skills to ace iOS Developer in London
Some tips for your application 🫡
Show Your Passion:When you're writing your application, let your enthusiasm for climate change and technology shine through. We want to see that you care about making a difference, just like we do at Heat Geek!
Tailor Your Application:Make sure to customise your CV and cover letter to highlight your experience with iOS development and any relevant technologies. We love seeing how your skills align with our mission and the role!
Be Clear and Concise:Keep your application straightforward and to the point. We appreciate clarity, so make it easy for us to see your qualifications and why you’d be a great fit for our team.
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. We can’t wait to hear from you!
How to prepare for a job interview at Heat Geek
✨Know Your Tech Inside Out
Make sure you brush up on your knowledge of Swift and the iOS ecosystem. Be ready to discuss your experience with modern iOS technologies like SwiftUI or Combine, as well as any projects you've worked on that showcase your skills. This will show your passion for the role and your ability to contribute from day one.
✨Showcase Your Problem-Solving Skills
Prepare to talk about complex problems you've tackled in previous roles. Heat Geek values autonomy and ownership, so share specific examples where you took a project from concept to implementation. Highlight how you approached challenges and what solutions you devised.
✨Emphasise Collaboration
Since you'll be working closely with product managers, designers, and backend engineers, it's crucial to demonstrate your teamwork skills. Think of instances where you collaborated effectively with others to deliver impactful user experiences, and be ready to discuss how you communicate and share ideas within a team.
✨Align with Their Mission
Heat Geek is all about making a difference in the world through sustainable heating solutions. Show your enthusiasm for their mission by discussing your interest in renewable energy or any relevant experience you have. This will help you connect with the team on a personal level and demonstrate that you're not just looking for a job, but a purpose.
