Senior Backend Engineer at Omaze

WHO WE ARE: At Omaze, we give our community in the UK and Germany the chance to win luxury homes and other life-changing prizes — all while raising money for the causes they love. Thanks to our Omaze Community, we’ve raised over £100 million for UK charities in just five years. That’s millions helping organisations like Age UK, the RSPCA, British Heart Foundation and Great Ormond Street Hospital Charity deliver life-saving work. And the best part? We’re only just getting started. Omaze is building a business and culture committed to growth and creating significant social impact on a global scale. WHY YOU’LL LOVE WORKING AT OMAZE: - Growth: Omaze is one of the fastest-growing companies in the world. - Impact: Join a team of world changers dedicated to creating a ripple effect of good. - Pioneering: Be part of something no one has done before. - Culture: We work hard, grow together, and spread joy along the way. 🔑 ABOUT THE JOB As a Senior Backend Engineer at Omaze, you are an experienced engineer who takes genuine ownership of your code, your decisions, and the outcomes they produce. Backend engineering is your specialism: you're at your best designing systems, building APIs, and making infrastructure decisions that hold up in high traffic products. You also have enough range across the stack to contribute wherever the team needs you and the pragmatism to know when to support your team. You embrace AI-assisted and agentic coding as part of how modern engineering gets done and apply it with the same judgement and rigour you bring to everything else. You believe everyone has something to contribute, value diversity and inclusion, and enjoy mentoring others to help them grow. 🔧 What You’ll Be Doing - Own the design, implementation, and testing of backend systems, APIs, and infrastructure producing code that's robust, well-considered, and built to operate reliably at scale. - Work closely with product, UX, and engineering peers from the earliest stages of a feature, shaping architecture decisions before they're hard to change. - Architect and build reusable, well-tested components that make the platform stronger and the next feature easier to ship. - Hold a high bar in code review giving feedback that's direct, constructive, and focused on design and long term maintainability, not just correctness. - Take responsibility for the performance, security, integrity, and resilience of what you build; raise concerns early and follow through on them. - Uphold and actively contribute to engineering standards and best practices, not because you're told to, but because you understand why they matter. - Use AI-assisted and agentic coding tools as a natural part of your workflow — knowing when they add leverage, when to interrogate their output, and how to review AI-generated code with the same rigour you'd apply to anything else. 🤩 About You - 7+ years of software engineering experience, with a strong backend background - Highly proficient with our server side tech stack: Typescript, DynamoDB, AWS Lambda, API Gateway and AWS CDK, - Experience with our client side tech stack: TypeScript and React. - Experience designing and building products or major features from concept to launch. - Highly proficient in unit, integration and end-to-end testing. - Comfortable operating in environments subject to regulatory, compliance, and risk-based security requirements. - Effective communicator in teams of technical and non-technical individuals. - You engage engineers to support a culture of collaboration and inclusion through mentorship, respectful code review, and dedication to quality. - You are excited to share and learn from your teammates about crafting fantastic user experiences. - You are passionate about voicing your opinions and can be humble in receiving feedback. - You are energised by sharing knowledge, learn constantly, and are unafraid to learn and iterate on your products quickly. 🙌WHAT’S IN IT FOR YOU Generous stock options scheme - Private medical and dental insurance - 9% employer pension contributions, when you contribute at least 2% - A personal learning and development budget each year to use on training courses, conferences and professional memberships - Personal equipment budget to work from home - Enhanced family leave policies - Life assurance of 4x your salary EXTRA INFORMATION: 🌍 Location: Holborn, London ⭐ Office Policy: 3 days in person, 2 days at home each week Diversity statement We actively seek out diversity of thought and experience to drive innovation. We welcome all backgrounds, identities, and perspectives and work hard to ensure that every Omaze employee can bring their authentic self to work at all times.