senior PHP Developer

Help build a platform that processes billions of product updates every day.We're looking for a Senior PHP Software Engineer to join a fast-growing tech scale-up based in Amsterdam. If you're passionate about building software where scalability, performance, and quality are at the core, this could be the opportunity for you.You'll join an engineering team building a modern e-commerce platform operating across more than twenty European countries. Every day, the platform processes massive amounts of product data, maintains API integrations, and continuously evolves to support further international growth. This isn't an environment where you'll spend most of your time maintaining legacy code. Instead, you'll help build new solutions, shape the architecture, and contribute to the continued growth of the platform.Here, you'll have the freedom to make technical decisions, take ownership, and make a real impact on software used daily by thousands of online retailers.What will you be doing?As a Senior PHP Software Engineer, you'll work in a modern backend environment where performance, reliability, and scalability are at the heart of everything you build. Together with your colleagues, you'll develop new features, improve existing services, and help prepare the platform for further international expansion.You'll be involved throughout the entire development process, from design to production, while actively contributing to software that remains scalable, maintainable, and future-proof.Your responsibilities include:Developing new backend functionality using LaravelDesigning and building scalable microservicesBuilding and maintaining REST APIsProcessing large volumes of product dataOptimising application performance and database queriesContributing to software architecture and technical decision-makingParticipating in code reviews and knowledge sharingImproving code quality through testing and automationTech StackYou'll be working in a modern engineering environment where quality comes first. The backend is built with PHP 8+ and Laravel, following a microservices architecture where REST APIs, RabbitMQ, and event-driven communication play an important role.Data is managed using MySQL, PostgreSQL, and OpenSearch, while the frontend is built with React and Inertia.js.The engineering team also relies on modern tooling such as Docker, GitHub Actions, CI/CD, PHPUnit, and PHPStan to build, test, and deploy reliable software.AI is also becoming an increasingly important part of the development workflow. Tools such as GitHub Copilot are actively used to automate repetitive tasks, improve code quality, and allow developers to focus on solving meaningful technical challenges.Who are you?You're someone who looks beyond simply writing code. You think about architecture, scalability, maintainability, and the technical decisions that ensure software remains easy to develop and maintain for years to come.You enjoy technical discussions, like challenging ideas, and can clearly explain and justify the decisions you make.Ideally, you have:Strong experience with PHP and LaravelA solid understanding of SOLID principles and object-oriented designExperience designing scalable and future-proof softwareExperience writing maintainable and well-tested codeKnowledge of performance optimisation, databases, and scalability challengesExperience building REST APIsFamiliarity with Docker and modern development workflowsExperience with microservices, high-traffic platforms, or event-driven architectures would be a strong advantage.What can you expect?You'll join a financially healthy and rapidly growing product company where software engineering is at the heart of the business. Engineering quality plays a key role in the continued growth of the platform, giving you the opportunity to make a real impact.In return, you can expect:A salary of up to approximately €80,000 - €90,000, depending on your experienceA modern office in the heart of AmsterdamA highly flexible hybrid setup, with one office day per week being sufficientPlenty of ownership and responsibility within the engineering teamA modern and future-proof technology stackShort communication lines and fast decision-makingAn experienced engineering team where quality and knowledge sharing are highly valuedPlenty of opportunities for personal and technical growthGood to know📍 Office located in Amsterdam city centre🏠 Hybrid working, with only one office day per week required🌍 Open to both Dutch-speaking and English-speaking developers💰 Salary up to approximately €80,000 - €90,000❌ Visa sponsorship is not availableInterested?Jill Kranenburg✆ T: +31630716577✉ E: j.kranenburg@haystackpeople.nl