Principal Engineer at Weareopenr

ABOUT US Openr is transforming how the hospitality industry manages and shares data. By centralising recipe, product, and pricing information, we help hospitality businesses seamlessly connect to platforms like Deliveroo and Just Eat, as well as EPOS and other customer touch points. We've recently closed a significant funding round and are backed by Azzurri Group, one of the UK's most successful hospitality investment platforms. With strong market traction, we're now looking for a Principal Engineer. ABOUT THE ROLE We're looking for an experienced engineer to join our engineering team. This is a hands-on individual contributor role where you'll be writing code daily, helping shape technical decisions, and supporting the growth of more junior engineers around you. You'll work across the full stack with a focus on backend systems, and you'll have real input into how we build and evolve our platform. We invest heavily in each other's development here. You'll mentor others and continue growing yourself. WHAT YOU'LL BE WORKING WITH Our stack includes TypeScript, React, and React Query on the frontend, with AWS Lambda, Node.js, and PostgreSQL on the backend, all running on AWS cloud infrastructure. We're looking for someone who's most comfortable on the backend but has a good understanding of frontend technologies too. You don't need to have worked with every one of these. What matters is that you're a confident engineer who enjoys learning and deepening your expertise. WHAT YOU'LL BE DOING BUILDING AND DELIVERING You'll be delivering high-quality solutions and balancing feature work with keeping our codebase healthy. Day to day, that means identifying and resolving bottlenecks in how we develop, contributing to reliability and performance, and helping manage technical dependencies and risks. You'll also have the opportunity to contribute to product strategy and roadmap planning, and to communicate technical ideas to non-technical colleagues. SUPPORTING THE TEAM You'll mentor engineers around you, helping them grow their skills and confidence. You'll also play a part in how we hire, from screening candidates and reviewing code challenges to welcoming new team members through onboarding. WHAT WE'RE LOOKING FOR - You're a confident, hands-on engineer with experience in TypeScript, React, SQL, and databases - You've worked with cloud infrastructure, ideally AWS and serverless patterns, or you're keen to develop deep expertise here - You've successfully delivered complex technical projects and understand what it takes to get things over the line - You communicate well and enjoy working collaboratively with people across different disciplines - You think thoughtfully about system design and architecture NICE TO HAVE, BUT NOT ESSENTIAL (WE'RE HAPPY TO HELP YOU GROW INTO THESE): - Experience with SaaS or integration-heavy platforms - Familiarity with event-driven architectures - Background in scaling products - An interest in security best practices WHAT WE OFFER Flexible hybrid working. Two days a week in our Central London office in Farringdon, the rest from wherever works for you. No out-of-hours support. We believe great work happens when people have balance. Real influence. Direct input into architectural decisions and the technical direction of a growing SaaS platform. A learning culture. Dedicated time and support for developing new skills, working with modern cloud-native technologies. A collaborative team. We genuinely enjoy working together and supporting each other's growth. BENEFITS - 25 days holiday per year plus Bank Holidays - Life Assurance (4x salary) - Income Protection (75% salary after 26 weeks) - Access to WeCare Employee Assistance Programme - Cycle to Work Scheme - Annual eyecare voucher with Specsavers - Wrkit Savings & Benefits platform We encourage applications from people of all backgrounds. If you're excited about this role but don't tick every box, we'd still love to hear from you. Curiosity and a desire to learn matter more to us than a perfect checklist.