Senior Backend Developer PHP/Symfony - AI & E-Commerce (m/w/d) - For German Resident Only in Telgte

Your career opportunity asSENIOR BACKEND DEVELOPER PHP/SYMPHONY - AI & E-COMMERCE (m/f/d)Is PHP/Symfony your foundation-and do you consider AI an integral part of modern software engineering?Then join us in further developing the backend of an e-commerce store with more than 3 million customers and over 140,000 products. At , as a Senior Developer, you'll take responsibility for architecture, sophisticated store features, and code quality-while also helping shape how we productively deploy AI coding tools and AI applications.YOUR ROLEAs a Senior Backend Developer, you'll work in our backend team alongside three other developers and collaborate closely with our Shop Team Lead. You'll not only develop features but also actively help shape the architecture and technical standards.In doing so, you'll bridge the gap between software engineering, AI, and business impact: You'll apply AI tools effectively in the development process, evaluate new AI use cases for our online store, and ensure that these result in stable, economically viable solutions.YOUR RESPONSIBILITIESYou'll continue to develop our backend architecture using PHP 8.x and Symfony and make informed decisions regarding scalability, maintainability, and performance.You'll design and develop sophisticated e-commerce features related to checkout, pricing logic, product catalog, search, and fulfillment.You'll ensure high code quality through clean code, automated tests, code reviews, and CI/CD.You use AI coding assistants and agents such as Claude Code, Cursor, or GitHub Copilot for development, refactoring, testing, and documentation.Together with the team, you develop standards for AI-supported development workflows and critically review AI-generated code.You identify productive AI use cases for our online store-such as smart search, product data enrichment, recommendations, or process automation.You'll translate business goals into technical solutions while keeping an eye on KPIs such as conversion rate, cart value, margin, and process costs.You'll serve as a technical sparring partner for product owners, developers, and other departments, and share your knowledge with the team.WHAT YOU BRING TO THE TABLEAt least 5 years of experience in backend development with modern PHP and SymfonyIn-depth knowledge of software architecture, e.g., DDD, modular monoliths, microservices, or event-driven architectureVery strong knowledge of MySQL, performance optimization, caching, and queuingPractical experience with AI coding assistants or coding agentsA good understanding of when a technical solution is not only elegant but also economically soundExcellent German and good English skillsA plus, but not required: Experience with LLM APIs, RAG, embeddings, vector databases, or agent-based workflows, as well as e-commerce systems and interfaces to ERP, payment, or logistics systems.Experience in mentoring or providing technical guidance to other developers is also welcome.OUR TECH STACKApplications: PHP 8.x, SymfonyData and Interfaces: MySQL, Redis, RabbitMQDelivery and Operations: On-premises hosting, Git, CI/CDCollaboration: Jira and ConfluenceWHAT WE OFFER YOUA secure job at a rapidly growing e-commerce companyCompetitive compensation package, including a contribution to an employer-sponsored retirement plan30 days of vacationFlexible work hours with flex timePersonalized training and development opportunitiesEmployee discounts on our entire product rangeModern workspaces and a digital work environmentBike leasing for a sustainable commuteRegular team events and group activitiesFree drinks, fruit, and snacksWHY HYGI.DE? is a growing e-commerce business with more than 3 million customers and over 140,000 products. Around 300 employees are driving our company's growth. We rely on digital processes, quick decision-making, personal responsibility, and creative ideas. In this role, you'll actively help shape our technology and the collaboration between IT and business units.READY TO BUILD WHAT COMES NEXT?Would you like to join our team and make a difference with us? Then send us your application as a PDF to .We look forward to getting to know you!About Alle potenziellen Bewerber sollten die folgenden Angaben zu dieser Stelle sorgfältig lesen, bevor sie sich bewerben. is the leading online store for medical devices, hygiene, and cleaning supplies in Germany. Since 2003, we've been continuously expanding our product range and offer our more than 3.2 million customers the industry's largest selection, featuring over 140,000 products.Our success is built on the extensive expertise and passion of our approximately 300 employees. We are a diverse team with varied backgrounds, skin colors, sexual orientations, gender identities, ages, religions, disabilities, and worldviews-this is what makes our work culture so special, because we leverage our diversity to achieve extraordinary results! xfmxmju This human expertise is complemented by a modern digital infrastructure, streamlined decision-making processes, and a commitment to fostering innovation, shared responsibility, and team spirit.ContactLocationTelgte (near Münster) GmbH & Co. KGOtto-Diehls-Straße 13-17D-48291 Telgte