Senior Software Engineer - E-commerce (PHP)

🧡 About Alma At Alma, we believe sustainable commerce depends on fair, well‑balanced trade. Because finance plays a pivotal role in business, our mission is to put it back in its rightful place - serving merchants and consumers. Our installment and deferred payment solutions help merchants boost sales by 20% or more, increase customer loyalty, and deliver a seamless shopping experience - without encouraging bad debt. As the buy now pay later leader in France and active in 10 European countries, we've empowered over +25,000 merchants and 10 million consumers. With 380+ Almakers and €100M+ ARR, Alma is scaling rapidly across Europe as a member of the Next40, and we're just getting started! 👐 About the team You'll join the CMS Engineering Team under François Gomis , Engineering Manager. We're a team of 4 engineers (1 senior, 2 intermediate) plus a part-time PM, building and maintaining Alma's payment plugins across 6 major e-commerce platforms (Sylius, Magento, PrestaShop, WooCommerce, Shopify, SFCC). We're scaling our capacity to deliver more seamlessly across our ecosystem and empower our team's technical growth. This position is a permanent contract (CDI), based in Paris OR open to full remote from Metropolitan France. 💼 About the job Plugin Architecture Improve the architecture of existing plugins and guide AI agents in creating new plugins with clean, maintainable structures. Set patterns that scale across our plugin ecosystem. Code Quality Implement review standards, enforce PHP patterns, set up linting/testing tools, and audit test coverage. Lead code reviews and pair programming sessions to help intermediate engineers grow technically. Best Practices & Continuous Improvement Facilitate and lead refinement sessions, help the team iterate on processes, and embed a culture of continuous improvement across the CMS squad. Cross-Platform Consistency Harmonize patterns and conventions across Sylius, Magento, PrestaShop, WooCommerce, Shopify, and SFCC to reduce complexity and accelerate delivery. 🧰 You will work with PHP, Composer, Docker, Magento, Sylius, go-task, GitHub, TypeScript, and Python. 🧩 About you To succeed in this job Solid expertise in PHP and backend architecture Hands-on experience building or maintaining plugins Ability to design systems that scale across multiple platforms Track record of mentoring or growing other engineers And it will be nice if you also Have deep expertise in at least one major CMS (Magento, Sylius, or WooCommerce) Have informal leadership background or willingness to step into it Are open to work with AI tools in your development workflow Don't meet every single requirement? At Alma, we believe great hires come from diverse paths. If this role excites you, we encourage you to apply. We value potential, curiosity and the ability to grow as much as experience. 🧘 What’s in it for you If you join, you will be able to grow and…