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About the Role

Join Heat Geek as an iOS Developer (Junior or Mid-level) to build and evolve the company's mobile experience. You will design, build, and maintain high-quality iOS applications, collaborating with cross-functional teams to solve complex problems and turn ambiguity into reliable solutions. This role is vital for supporting internal teams and the wider Heat Geek community, contributing to a greener world.

Responsibilities

• 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

Requirements

• Professional experience developing iOS applications
• 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

Skills

• SwiftUI
• Combine
• TCA
• ARKit

Location

• Waterloo, Europe

Work Type

• Full-time
• Hybrid

Experience Level

• Junior
• Mid-level

Salary/Compensations

• Salary evaluated regularly, based on skills, impact, and role scope—not negotiation tactics

Benefits

• £5,000 contribution towards your own heat pump installation
• Shares in the company, allocated under a tax-incentivised scheme
• Private medical & dental insurance
• Learning and development budget
• Annual summer retreat
• Gym membership contribution
• Season train ticket loan
• Cycle to work scheme
• Annual retreat with the Heat Geek team
• Yoga, run club and social events with other sustainability startups in our co-working space
• Monthly socials
• Regular collaboration opportunities

About the Company

• 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. As of July 2026, we have prevented 2,600,000 tonnes of carbon from entering the atmosphere, and we aren't stopping there!
• 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.

Equal Opportunity

• 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!
• We are unfortunately unable to offer sponsorship to work in the UK for this position.