Senior Full Stack Developer

Location: London, hybrid Reporting to: Tech Lead in Growth or Operations teams About Hometree Join Hometree Group and be at the forefront of transforming the residential energy landscape. Founded in 2015, Hometree began in the home cover market. Today we’re spearheading the shift to decentralised, digitised home energy systems using heat pumps, solar panels, batteries, EV chargers and smart controls. This approach isn’t just about sustainability; it empowers homeowners to manage energy more efficiently and cost-effectively, setting new standards in energy consumption. We operate across three dynamic divisions: Financial Services: Here, you'll contribute to offering flexible financing options that make it feasible for homeowners to embrace renewable energy technologies and make essential upgrades. Energy Services: Be part of our extensive network of local installation businesses that equip homeowners with the cutting-edge, sustainable energy solutions necessary for reaching net-zero emissions. Home Services: Help maintain the comfort and functionality of homes with comprehensive coverage plans that protect essential hardware. At Hometree Group, we are committed to guiding UK homeowners on their journey towards more sustainable energy solutions, and we need passionate individuals to support them at every step. Join us during this exciting time and play a pivotal role in a business that supports sustainable homeownership in alignment with homeowners readiness and needs. Key Achievements £85m+ capital raised: We’ve raised over £85m to date from leading global investors including Legal & General Capital and specialist energy VCs. £300m+ UK’s first residential renewable securitisation: We have secured a £300m+ facility from Barclays, CPP Investments and partners. 6 acquisitions: We've expanded our operations by acquiring key companies across financing (Hometree Finance, formerly Bewarm), home cover (Your Repair) and energy services (Geowarmth, The Little Green Energy Company, IMS and GreenGen). 100k+ homes covered: We cover over one hundred thousand homes across the UK. 300+ employees: We have over 300 passionate employees transforming the industry across the Group, one home at a time. The Role As Senior Full Stack Developer for Hometree, you’ll work across our NodeJS/Serverless back end and Next.js/React/TypeScript front end, delivering scalable, high-performance solutions for partners and consumers. In our fast-growing, hands-on team, you’ll thrive if you’re a self-starter who values quality, speed and collaboration. Responsibilities Full-Stack Development: Architect and build scalable web applications, leveraging Node.JS and serverless on the back end alongside Next.js and React on the front end. Clean Code & Performance: Write clean, maintainable code, develop and document robust RESTful APIs, and continuously tune for speed, reliability and scalability. Cross-Functional Collaboration: Partner with Product, Growth and Operations to translate business requirements into clear technical specifications—and ship features rapidly. Troubleshooting & Support: Proactively identify, diagnose and resolve issues across the full stack, and provide ongoing maintenance to keep the platform running smoothly. Automated Testing & QA: Build and maintain comprehensive test suites—unit, integration and end-to-end—and integrate them into our CI pipelines to catch regressions early. Documentation: Produce and update clear, concise documentation for codebases, APIs, system architectures and operational runbooks. Continuous Improvement: Stay updated with industry trends, evaluate new tools and techniques, and recommend changes that boost our application’s performance, security and usability. What we’re looking for in our ideal candidate Full-Stack Expertise (5+ years): Proven experience building and shipping end-to-end web applications with NodeJS/Serverless and React/Next.js. Strong Ownership & Autonomy: Takes full responsibility for features and projects, thrives with minimal oversight and drives tasks to completion. Analytical Thinker: Breaks down complex technical challenges, troubleshoots effectively and delivers robust, scalable solutions. Meticulous Quality Focus: Writes clean, well-tested code and maintains clear documentation to ensure reliability and maintainability. Excellent Communication Skills: Conveys technical concepts clearly to both technical and non-technical audiences and fosters collaboration. Curiosity-Driven Approach: Quickly learns new tools and frameworks, adapts to shifting priorities and embraces evolving project requirements. Effective Time Management: Juggles multiple initiatives, prioritises tasks wisely and consistently meets deadlines. Our Recruitment Process Initial Call (30 mins): A friendly introductory chat with our Talent Acquisition team to learn more about the role, your background and what motivates you. Technical Interview (30 mins): An informal chat with one of our Technical Leads where we’ll review your past projects and dive into architecture and code scenarios. Technical Exercise (1.5 hrs): A collaborative pair programming session with our senior developers where we’ll code and brainstorm solutions together. Final Interview (30 mins): A concluding discussion with the CTO of Hometree to tie everything together and discuss next steps. Perks of the Job We have an ever-expanding list of benefits that currently includes: 25 days holiday plus bank holidays and your birthday Free home emergency cover with Hometree plus 40% discount for friends & family Discounted gym memberships across over 100 UK gyms (independent and chains) and free fitness, wellness and nutrition apps £500 home office allowance Support for your mental health and wellbeing via Oliva Menopause support from Stella , including friends & family access Cycle-to-work scheme Regular team socials including Summer and Winter parties FCA Code of Conduct At Hometree, we prioritise ethical conduct and regulatory compliance. As a regulated financial services organisation, we operate under the strict guidelines and regulations set forth by the Financial Conduct Authority (FCA). We are committed to maintaining the highest standards of integrity and professionalism in all aspects of our business. As a prospective member of our team, you will be expected to fully embrace and adhere to the FCA Code of Conduct obligations. These obligations are designed to ensure the fair treatment of customers, the preservation of market integrity and the promotion of healthy competition within the financial services industry. Equal Opportunity Employer At Hometree, we are committed to creating an inclusive and representative environment. We know that different experiences, perspectives and backgrounds make for a better workplace and a better planet. Together, we celebrate differences and promote a culture where you can bring your full self to work. We promise to give you the same opportunities as everyone else and we won't discriminate against you at any point in the hiring process or the working day. This includes how we source talent, our interview process, our conditions of employment, feedback and everything in between.