Senior Engineer I

TrustedHousesitters is a fast growing, direct-to-consumer marketplace that is redefining pet care and travel. Our platform connects a thriving global community of pet lovers through a unique trust-based membership model. We're on a mission to create a world where pet owners can travel with peace of mind, knowing their pets are in safe hands, while sitters enjoy unique homestays around the world.

Our vision is simple: to become the world's most loved travel solution for pet people - and we're making it a reality. With almost 250,000 members worldwide with the ambition of scaling to 1 Million, 97% say we have improved their lives, and our growth is high as word-of-mouth fuels a fast-growing, passionate community.

TrustedHousesitters was named one of Escape the City's top organisations to work for in 2023 and we were proud to be part of the 2024 cohort of Technation's Future Fifty, the UK's leading pre-IPO programme. In October 2024 we secured B Corp certification, reflecting our commitment to our people, the planet and pets across the world.

At TrustedHousesitters, we embrace a collaborative, high-impact work environment where innovation, individual accountability, and ownership drive everything we do. We believe in empowering our people to see the real impact of their work. Every team member plays a role in crafting quality experiences for our members, and we continuously push ourselves to improve, iterate, and innovate always with the goal of strengthening our global community of pet lovers.

Now is an exciting time to join TrustedHousesitters where innovation, advocacy and community-driven growth are at the heart of our success. If you're looking to make a real impact in a mission-led, fast-scaling tech business, this is the right place for you.

About the Role

We are seeking a motivated Senior Full Stack Engineer with a passion for user experience, product development, and scalable architecture to join our Growth Alliance team. This team plays a critical role in acquiring new pet owners (homes and pets) and is instrumental to our goal of scaling TrustedHousesitters from 250K to 1 million members.

As part of the Growth Alliance, you'll work in a collaborative, outcome-focused environment where experimentation and ownership are key. Your work will directly support TrustedHousesitters mission and business goals and you'll help define how we scale our global community of pet owners.

As a Senior Engineer, you'll drive high-impact initiatives that improve how new pet owners discover and join our platform.

You'll take full ownership of features, from idea to deployment and iteration and collaborate closely with Product Managers, Designers, and Engineers across the business.

Responsibilities

• Leading the design and development of new landing routes and product features that increase owner sign-ups, engagement and conversions to paid members.
• Improving our platform's architecture and developer experience by helping migrate key product surfaces to Next.js, enabling faster delivery with cleaner, scalable code.
• Building and maintaining robust, scalable full-stack features with a strong focus on UX using technologies like React, Next.js, and Python (Django).
• Writing clean, well-tested code and contributing to high-quality, constructive code reviews.
• Guiding technical discussions and architecture decisions to shape the platform's future.
• Troubleshooting complex issues in production and ensuring ongoing application performance and reliability.
• Mentoring others and raising the standard of engineering practices within the team.
• Collaborate with Product and Design to shape initiatives that impact key KPIs while aligning technical tradeoffs with business priorities.

Requirements

• Proven experience (4+ years) in full-stack development, including production-grade React (or similar), TypeScript, and backend development with Python/Django or equivalent frameworks.
• Strong understanding of scalable web architecture, performance optimisation, and secure coding practices.
• Experience designing, building, and evolving APIs and integrating with third-party platforms.
• Hands-on experience with Next.js, SSR/SSG strategies, and Core Web Vitals optimisation.
• Solid foundation in HTML, CSS, and accessibility best practices.
• Ability to lead technical discovery, architecture planning, and implementation of complex product features.
• Experience working with Design systems.
• Great communication skills and confidence in collaborating cross-functionally with Product Managers, Designers, and non-technical stakeholders.
• Comfortable driving initiatives in ambiguous problem spaces, aligning business and technical perspectives.
• Experience mentoring engineers through pairing, code reviews, and knowledge-sharing.
• Familiarity with CI/CD pipelines, automated testing strategies, and observability tools (e.g., GitHub Actions, Sentry, Datadog).
• A mindset geared toward experimentation, measurement, and continuous improvement, especially within growth-driven product teams.

Nice to have (But not essential)

• Experience integrating AI/ML-powered tools or APIs (e.g. GPT, image recognition, personalization engines) to enhance user experience or automate tasks.
• Familiarity with A/B testing frameworks or data-informed experimentation (especially for growth/product squads).

Important note: It is rare that candidates will have experience of everything in the job description, so please do not be put off from applying if you do not meet every aspect of the criteria listed!
£70,000 - £80,000 a year Benefits In addition to a competitive salary and bonus, we offer a range of benefits, including: Fully remote work Generous equity options Discretionary 10% annual bonus scheme 25 days holiday annually plus bank holidays and Christmas to New Year closure Pension scheme: 5% from you as an employee and 3% from TrustedHousesitters Premium TrustedHousesitters pet owner and sitter membership. This includes benefits like airport lounge passes, sit cancellation insurance, and home and contents insurance for sits for you X5 premium memberships for your friends and family each year Our team have an unlimited housesitting allowance, can work remotely from their sits, and are eligible to £500 per year towards travel costs £200 annually towards home office equipment Access to Spaces (co-working) Locations across the globe Monthly working from home stipend Macbook Find a rescue pet to join your family and we'll cover the adoption fees, as well as paternity to help any pet settle into their new home. We host a quarterly all-expenses paid meet-up and will fund team events (remote or in person) throughout the year We can cover costs of personal development resources, and have a regular time set aside for personal development Bupa Health Insurance and Dental Insurance plan SimplyHealth Healthcare Cash plan Trusted Giving scheme - employee volunteering via Onhand and employee giving via Tyve Weekly virtual yoga sessions Brighton Bikeshare Recruitment Referral Bonus

If you're ready to join us on our mission to become the most loved pet travel solution, we'd love to hear from you!

In your application, please feel free to note which pronouns you use (For example- she/her/hers, he/him/his, they/them/theirs, etc).

At the heart of our team are a mix of diverse backgrounds. Here at TrustedHousesitters, we're committed to the equal opportunities policy throughout the interview process and selection. Offers of employment into TrustedHousesitters are based solely on individual merit, qualifications, and the person's professional suitability. Gender identity, sexual orientation, marital or civil partnership status, colour, race, nationality, ethnic or national origins, religion or beliefs, age, mental or physical disability, medical condition, pregnancy or maternity status, or any other protected characteristics do not enter into our decision-making process.

If you have a medical condition or an individual need for an adjustment to our process, and you believe this may affect your ability to be at your best - please let us know so we can talk about how we can best support you and make any adjustments that may be needed.