Senior Software Engineer (Golang) - Telco Experience at UtilityWarehouse1

Hi! We're UW. We’re on a mission to take the headache out of utilities by providing them all in one place. One bill for energy, broadband, mobile and insurance and a whole lot of savings! We’re aiming to double in size as we help more people to stop wasting time and money—big ambitions, to be delivered by people like you. Got your attention? Read on… We work together. Your team and the people you will work with… We work in small, autonomous teams with real ownership of the customer journeys they deliver. As a Senior Backend Engineer in the Telco Experience Team, you’ll build and integrate APIs that power stakeholder-facing telco journeys, working closely with product managers, frontend engineers, and business stakeholders to deliver customer-focused features. While this role sits within our Telco Experience Team to meet immediate hiring needs, we’re also growing our engineering function more broadly and are keen to hear from engineers interested in building products across multiple domains. We value solid engineering fundamentals and transferable skills, and you’ll have opportunities to work beyond telco as our platform and teams continue to scale. You’ll collaborate with core platform teams responsible for supplier integrations and shared infrastructure, contributing to projects that shape how our telco products are experienced end-to-end. Working primarily with Go, Kafka, Kubernetes, Postgres and MongoDB with event sourcing, you’ll help evolve a platform at the heart of our telco offering.   We put people first. It’s all about you… We’re looking for a senior, backend-focused engineer who enjoys supporting frontend-heavy initiatives while building robust, scalable systems. You’ll succeed here if you’re proactive, comfortable engaging with stakeholders, and able to thrive in a fast-moving, evolving team environment. An orientation toward digitalisation and whole-product thinking, will help you make a real impact from day one. Required Skills and Experience To be successful in this role, you’ll need: • Strong, hands-on production experience with Go (non-negotiable) • Proven fluency with Postgres, Kafka, and Kubernetes • Solid experience building distributed systems, including concurrency and event-driven architectures • A strong understanding of system resilience, observability, uptime, SLAs, and progressive degradation • The ability to deliver end-to-end solutions, from design through build, deployment, and ongoing support • Experience working with CI/CD tooling, Terraform, and modern cloud workflows • Familiarity with Kafka and database migrations (e.g. CockroachDB to RDS) as a plus • Strong communication, collaboration, and problem-solving skills • The ability to thrive in an agile, iterative environment while delivering continuous feature improvements • Experience mentoring mid-level engineers and modelling engineering best practices • Comfort working in autonomous, product-focused teamsWe deliver progress. What you’ll do and how you will make an impact. Senior Software Engineer Responsibilities (Based on our Engineering Career Progression Framework): • Technical Mastery: Be an expert in multiple technologies and proactively stay up-to-date with relevant technology in your area. You will design and implement complex technical solutions that align with our technical strategy and take responsibility for technical decisions in your team. • Impact: Be integral in defining team goals and ensuring proposed work is aligned with them. You will drive prioritisation within the team to best achieve goals and push yourself and the team to succeed • Operational Excellence: Ensure continuous delivery at scale and stability across multiple production components. You will promote techniques for scalability, autorecovery, and security, and be capable of addressing critical incidents in production. • Planning & Delivery: Owning large technical features or projects from design through to completion, with clear milestones and progress updates. You will provide technical direction to 1-5 other engineers, prioritise tasks well, and consistently make well-informed trade-offs between progress and perfection. You will also proactively clarify success metrics and tie efforts toward delivering business value • Business & Domain knowledge:  Hold full technical domain knowledge within the squad. You will understand how the squad's mission contributes to the company's strategy and explain that contribution to others • Leadership & Culture: Teach our culture to others and drive the adoption of technical strategy within your squad. You will mentor other engineers via pairing and code review, lead complex projects, and interview or onboard new team members.Possible Next Career Steps • Staff Software Engineer • Engineering ManagerSo why pick UW? We’ve got big ambitions so there’s going to be plenty of challenges. There are also a lot of benefits: • An industry-benchmarked salary. We’ll share it during your first conversation. • Share Options and Save as You Earn scheme. • Flexible working — remote-first with access to hot desks across the UK and a central London hub. • Work-from-anywhere policy for up to 2 weeks per year. • Discounts on our services and a free Cashback Card. • Matched-contribution pension scheme and life assurance up to 4x salary. • Family-friendly policies designed to help you and your family thrive. • Discounted private health insurance, Employee Assistance line and free Virtual GP. • Belonging groups helping shape an inclusive future. • A commitment to learning and progression through our Career Development Framework with regular review and promotion cycles.Apply here! You’ve got this far… Hit apply — we can’t wait to hear from you! Worried you don’t hit every criterion? We welcome applications from diverse backgrounds — get your application in and let’s chat!