Backend Developer (m/w/d)
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€70,000 - €95,000 / year
Based on market tech benchmarks3-5 years
Prior hands-on project experienceOn-site
Office collaboration scheduleBerlin
Registered workplace addressRequired Tech Stack & Skills
AI Role Summary
CKM Group seeks a Backend Developer (m/w/d) in Berlin to build and maintain scalable PHP/Symfony services for healthcare and laboratory automation. The role requires 3‑5 years of backend experience, strong API design skills, and a focus on testing and CI/CD.
Detailed Role Description
About the Role
CKM Group, a leader in innovative health‑care solutions, is expanding its Berlin Coding Company (BCC) team. As a Backend Developer (m/w/d) you will design, develop and optimise high‑performance backend services that power our laboratory information systems, e‑health applications and AI‑enhanced workflows.
Key Responsibilities
- Develop and maintain backend services using PHP, Symfony and Doctrine, focusing on order‑ and report‑processing for laboratory workflows.
- Design robust, versioned RESTful APIs and ensure seamless integration with external lab systems.
- Implement asynchronous processing, message queues and event‑driven architecture for high scalability.
- Write comprehensive unit, integration and end‑to‑end tests (PHPUnit, PHPStan, Playwright) and enforce code quality standards.
- Participate in CI/CD pipelines, Docker‑based deployments and DDEV development environments.
- Monitor performance, conduct profiling and troubleshoot production issues to guarantee 99.9% uptime.
- Collaborate closely with product owners, UI/UX designers and data scientists to translate business needs into technical solutions.
Required Qualifications & Skills
- 3‑5 years of professional experience in backend development with PHP.
- Strong expertise in Symfony framework and Doctrine ORM.
- Proficient in designing RESTful APIs and working with relational databases (MySQL/PostgreSQL).
- Hands‑on experience with Docker, CI/CD tools (GitLab CI, Jenkins) and DDEV.
- Solid testing mindset: PHPUnit, PHPStan, and familiarity with Playwright for end‑to‑end tests.
- Understanding of asynchronous processing (RabbitMQ, Symfony Messenger, or similar).
- Good command of German or English for documentation and team communication.
Nice to Have
- Experience in the healthcare or laboratory domain.
- Knowledge of Kubernetes or cloud platforms (AWS, Azure).
- Familiarity with AI/ML model integration.
- Exposure to event‑sourcing or CQRS patterns.
What We Offer / Benefits
- Competitive salary (€70‑95k) with performance bonus.
- Flexible working hours and a modern office in Berlin’s tech hub.
- Professional development budget, conferences and certifications.
- Comprehensive health insurance and wellness programs.
- Team events, free snacks & drinks, and a collaborative culture.
Quick Role Summary
| Job Title | Backend Developer (m/w/d) |
|---|---|
| Experience | 3‑5 years |
| Work Mode | On-site |
| Estimated CTC | €70,000 - €95,000 / year |
About The Employer
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