Senior Backend Engineer

Loomery is a digital product agency that helps clients move fast with technology. Our teams combine grounded strategic approaches with deep technical expertise to pinpoint the right thing to build, then make it happen fast.

Since launching five years ago we’ve worked with large businesses, universities and startups to design and deliver new digital products and grow their capabilities. In the past few months we’ve worked with IG, University of Exeter, Blue Light Card and MOO.com.

You will join a growing team, led by founders Brett Thornton and Tim Checkley. Brett and Tim are strategy and product leaders with over two decades of experience delivering for organisations including Apple, Visa, NatWest and Tesco. Learn more about the team.

We are passionate about creating a diverse company that’s a stimulating and supportive place to work – and one that leaves the planet better than we found it.

The role

We're looking for a Senior Backend Engineer to set the technical standards for backend development across all our client engagements. This is a hands-on role where you'll split your time between technical leadership and writing code.

You'll be:

• Leading technical delivery for our clients, architecting and building robust backend services that scale.
• Working in cross-functional teams, alongside other disciplines like product managers, user researchers, designers, mobile engineers and more.
• Setting engineering standards across Loomery’s community of practice, establishing best practices and technical excellence.
• Mentoring and developing others, fostering a culture of continuous learning and growth.
• Supporting business development by contributing technical expertise to sales pitches and client conversations.
• Balancing strategy with execution– one day you might be designing system architecture, the next debugging production issues.
• Building for the future with emerging technologies including AI, spatial computing, and next-gen platforms.

About you

Essential experience:

• Extensive backend engineering experience with a track record of shipping high-quality products at scale
• Technical leadership experience – you've guided technical decisions and influenced engineering culture
• Polyglot developer with deep expertise in at least one primary technology stack (TypeScript/Node.js/AWS is one we work with this most frequently, but not always)
• Product mindset – you think through customer experience and business needs first, then determine the technical solution
• Excellent communication skills – you can explain complex technical concepts to both engineers and non-technical stakeholders
• Adaptability – you're comfortable working across different technologies, languages, and problem domains

Nice to have:

• Experience developing with AI/ML and emerging technologies
• Mobile development experience (native or cross-platform)
• Client-facing experience in consultancy or agency environments
• Startup or scale-up experience in fast-moving environments
• Interest in spatial computing, AR/VR or other cutting-edge tech

Company Benefits

• Learning grant
• Annual technology grant
• Home office set up (we work 2-3 days a week in the London office)
• Company pension
• Flexible working arrangements

Interview Process

1. Initial conversation (30 mins) to get to know each other with our Talent Lead
2. Technical interview (60 mins) complete a code review task (shared in advance), and answer questions focusing on architecture and leadership scenarios with 2 Loomery engineers
3. Final stage interview (60 mins) with one of our founders, Brett or Tim, and another member of the team from outside Engineering