Senior Backend Engineer

Beschreibung

Job Zusammenfassung In dieser Position entwickelst du neue Backend-Dienste in Go, modernisierst bestehende PHP-Systeme und bearbeitest komplexe Probleme in einem agilen Team zur Steigerung der Plattformstabilität. Job Zusammenfassung In dieser Position entwickelst du neue Backend-Dienste in Go, modernisierst bestehende PHP-Systeme und bearbeitest komplexe Probleme in einem agilen Team zur Steigerung der Plattformstabilität. Deine Rolle im Team To strengthen our Technology Department, we're looking for a Senior Software Backend Engineer (PHP & Golang) to help build and evolve the systems that power Cardmarket. You'll be part of a small, autonomous team within our Engineering department, working on core backend services that keep the platform running smoothly every day. You'll work closely with other engineers to design new services in Go while gradually modernizing existing PHP systems. This role is for someone who enjoys solving complex problems, takes ownership of their code, and gets a kick out of building clean, reliable, and scalable software that improves a product used by millions every day. The Engineering department consists of 20+ engineers organized into specialized teams. Each team operates as an autonomous scrum unit with clear ownership of their domain while collaborating across teams on shared infrastructure and platform components. The Marketplace team consists of 4-5 engineers. As part of the team you will: Design and implement new services in Go end-to-end. Maintain and migrate existing PHP systems gradually. The team is led by the Technical Engineering Manager. Unsere Erwartungen an dich Qualifikationen Fluent English is a must. Available to start within 3 months. Valid work permit for Germany is necessary & presence in Berlin is required! Microservices and Event-driven architecture. Building reliable, scalable, maintainable data intensive applications. Strong systems thinking and problem-solving skills, able to break down complex problems while keeping user impact and long-term sustainability in mind. Nice to have (Bonus): Solid Scrum foundation. Familiarity with CI/CD pipelines, Kubernetes, Gitlab, Terraform. Certifications for AWS / Go / PHP. Strong understanding of distributed systems, including service-to-service communication and reliability best practices. Proficiency with observability stacks, including monitoring, alerting, logging, and distributed tracing (e.g., Grafana, NewRelic). Erfahrung 3+ years backend experience with proficiency and willingness to work across both PHP (for system migration) and Go (for new services), we expect a gradual shift toward Go as we modernize our stack. Senior engineering mindset and hands-on experience and commitment to engineering excellence, including incident handling, root cause analysis, continuous improvement of observability and alerting, and delivering high-quality code with strong automated testing and best practices for maintainability and reliability. Domain-driven design / DDD, E2E & Load testing experience. Unser Angebot You will work in a full-time position (40 hours per week) at our office in Berlin, a place where creative energy, exchange, and focus come together. At the same time, we offer a hybrid working model and provide you with all the equipment you need for your work. Thanks to flexible working hours with clearly defined core hours, you can structure your day in a way that allows work and private life to harmonize well. Five weeks of paid vacation as well as a Germany-wide public transport ticket (Deutschlandticket) that supports you flexibly in your everyday life. A lunch allowance (up to €7.67 per workday) that allows you to be reimbursed for your lunch. With a personal annual learning budget of €1,500, we deliberately invest in your development: conferences, courses, books, or new skills. We support you with an Urban Sports Club membership for your physical balance, our collaboration with DearEmployee, which offers anonymous, professional psychological support, and the Women of Cardmarket & LGBTQIA+ Group, which promotes exchange, visibility, and empowerment. Themen mit denen du dich im Job beschäftigst Cloud Computing Microservices Architecture Metadaten Level: Senior Job Feld: Back End Anstellung: Vollzeit Vertragsart: Unbefristetes Dienstverhältnis Arbeitsmodell: Hybrid, Onsite Unternehmenstyp: Etablierte Firma Branche: Handel Ort: Berlin | Deutschland

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