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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** Agentic Commerce Era - **Location:** London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Code Review, Information Engineering, Software Debugging, Distributed Systems, OAuth, RabbitMQ, Redis, Runbook, Scala (Programming Language), Software Engineering, SQL Databases, Systems Integration, TypeScript, Data Logging, Cloud Platform System, ReactJS, Caching, Backend, Kotlin, Build Management, Data Analytics, Integration Frameworks, Apache Kafka, Front End Software Development, Api Design, Golang - **Published:** September 24, 2026 - **Apply:** https://www.apply4u.co.uk/jobs/senior-software-engineer/48183809 ## About the Role support, and other engineering teams.* Improve quality through tests, code review, observability, and simpler designs.* Use data and production evidence to validate decisions.* Take ownership of incidents and production issues when systems do not behave as expected.## **Who You Are*** You have 5+ years of software engineering experience, with strong backend skills in Java, Scala, Kotlin, Go, or a similar language* Education: Preferred minimum Bachelor's degree in CS, EE, SW, CE, MIS; or equivalent experience* You have experience owning ambiguous technical work and can solve problems across multiple layers of a system, from backend services to product-facing frontend workflows when needed* You're comfortable with distributed systems, event-driven flows, caching, retries, rate limits, and the many ways production systems fail* You have experience building APIs, services, and integrations, backed by solid SQL and data-driven product decisions* You've worked with a cloud platform (GCP, AWS, or similar) and event systems like Kafka, RabbitMQ, or Pub/Sub* You write automated tests, review code thoughtfully, and use logs, metrics, dashboards, and tracing to understand how your systems actually behave in production* You're a strong production debugger who stays calm and clear during incidents, and you can explain trade-offs to both engineers and non-engineers* You have a bias toward simple, reliable solutions that other engineers can operate without you in the room* You take ownership of outcomes, not just tickets - you ask what problem you're solving before jumping to implementation, validate risky assumptions early, and escalate when risk or scope is unclear* You don't take shortcuts around process, security, or production safety* Nice to have: React/TypeScript or similar frontend experience, merchant- or customer-facing product work, third-party integrations (OAuth, account linking, external APIs), Redis/caching/queues at scale, or experience with analytics and event data products #J-18808-Ljbffr ## Description technical trailblazers who shape the future of commerce, this is the place for you.We are looking for a Senior Software Engineer who can own complex problems from discovery through production. This role is not narrowly frontend, backend, or data engineering. The right person can work across services, APIs, event flows, product experience, production debugging, and cross-team delivery.They should be comfortable taking an unclear business or customer problem, breaking it down, making trade-offs clear, and shipping a reliable solution.We need someone who raises the engineering bar without needing a lot of direction.## **What You'll Do*** Design and build reliable services, APIs, and product-facing workflows.* Work across backend systems, UI surfaces, event processing, and third-party integrations.* Turn unclear problems into concrete technical plans.* Own production behavior, including monitoring, alerting, logging, debugging, and runbooks.* Work with product, design, infrastructure ## Related Videos - [The user in the eye of the Cargo1492 storm](https://www.wearedevelopers.com/videos/96-the-user-in-the-eye-of-the-cargo1492-storm) - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Scoring 2000 Products per Request: Performance Pitfalls in Golang](https://www.wearedevelopers.com/videos/2073-scoring-2000-products-per-request-performance-pitfalls-in-golang) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)