Senior Magento Engineer

At Smartbox Group, we believe in creating unforgettable memories through real-life experiences. With nearly 15,000 experiences across Stays, Wellness, Adventure and Gastronomy, we inspire people to live more and share more. Operating in 11 countries, with 700+ employees and 40,000+ partners, we're committed to making meaningful experiences accessible to everyone.

We're looking for a Senior Magento Engineer to own and optimize critical checkout functionality, including payments, promotions, gift vouchers and order fulfilment integrations. You'll focus on building a fast, reliable and scalable checkout experience, particularly during peak trading periods like Christmas. We're looking for someone with strong hands-on Magento 2 production experience who understands performance optimization, scalability and high-traffic eCommerce environments.

Why this role Join a team focused on modern technology, engineering quality and continuous improvement. Modern Tech Stack: Up-to-date Magento Open Source, PHP and well-documented architecture. Code Quality: Static analysis, mutation testing and automated unit and end-to-end tests. Fast Deployment: Automated CI/CD pipelines with multiple releases each week.

Scalable Infrastructure: Kubernetes with logging, monitoring and performance tracing. AI-Driven Development: Integrated AI coding tools to support daily development, testing and code reviews.

What you'll do

Build and maintain custom Magento 2 modules for checkout, payments, promotions and vouchers, with tests. Integrate Magento with payment providers and internal services over REST APIs and message queues. Find and fix performance problems in caching, indexing, queues and checkout, and help run load tests before peak. Investigate production issues with logs, metrics and traces, and fix them.

Review code, contribute to technical design and architecture decisions, and improve the CI/CD pipeline when it gets in the team's way. Use AI tools to write, refactor, review and test code, and check their output before it ships.

What you'll bring

Five or more years building and running Magento 2 in production. Experience on Open Source or Adobe Commerce both count . Solid knowledge of Magento internals: dependency injection, plugins, observers, service contracts, the module system and message queues. Modern PHP (8.x), good object-oriented design, and the habit of writing PHPUnit tests.

Performance work on a busy store: full-page cache, Redis, indexing and MySQL query tuning. An understanding of observability (logging, metrics and tracing) on a high-traffic store. Enough frontend to work in Magento themes: Knockout.js, RequireJS and Tailwind CSS. Daily use of Docker, Git and CI/CD. Kubernetes experience helps, and we'll get you up to speed if you're newer to it.

Day-to-day use of agentic development tools, such as Claude Code or similar, in your engineering work. Using AI across the whole development cycle: scaffolding, code generation, refactoring, writing tests, code review, debugging and documentation. The judgement to check, test and take ownership of AI-generated code rather than accepting it as it is.

Good prompting and context management on a real codebase. Experience with MCP-based integrations is a plus. A cool head under pressure, and the ability to explain trade-offs to engineers, product and QA.

Nice to have

Payment gateway integrations at scale. Getting a store ready for a seasonal peak: load testing, capacity planning, change freezes. Headless or composable commerce. Static analysis and mutation testing.

What We Offer

🏡 Flexible Working: Hybrid model + 20 working days abroad annually. ✅ Core Benefits: Health cover, pension, TaxSaver and extra leave. 🎁 Flexible Benefits: Health, wellbeing and learning options. 🌈 Inclusive Culture: Parental leave, Inclusive Day and fair rewards. 📚 Career Growth: Study assistance and learning opportunities.

🎉 Extra Perks: Unbox Your World Day + paid sabbatical after 5 years. 🌍 Transparency: Clear salary bands and career levels.