Senior Magneto 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 andmaintain 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.  

Whatyou'll bring  

• Five or more years building and running Magento 2 in production. Experience on Open Source or Adobe Commerce bothcount.  

• Solid knowledge of Magento internals: dependency injection, plugins, observers, service contracts, the modulesystem and message queues. Modern PHP (8.x), good object-oriented design, and the habit of writingPHPUnit 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, andwe'll get you up to speed ifyou'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.