> Markdown version of [/jobs/ext/4133589-senior-backend-developer](https://www.wearedevelopers.com/jobs/ext/4133589-senior-backend-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Backend Developer - **Company:** Halian - **Location:** München, Germany (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Application Performance Management, Automation of Tests, Code Review, Continuous Integration, Software Debugging, DevOps, Distributed Systems, Fault Tolerance, Monitoring of Systems, PostgreSQL, Next.js, Software Engineering, TypeScript, Cloud Platform System, ReactJS, Backend, Event Driven Architecture, Kubernetes, Code Testing, Front End Software Development, Functional Programming, Restful APIs, Docker, Elixir - **Published:** October 31, 2026 - **Apply:** https://www.careerjet.de/jobad/de45037e3d393ceb665af050bcf26b307a ## About the Role * 5+ years of professional software engineering experience * Strong experience with Elixir and Phoenix, or extensive experience in comparable backend technologies and distributed systems * Solid understanding of functional programming concepts * Experience building scalable, high-performance backend applications * Knowledge of RESTful APIs, automated testing, and CI/CD pipelines * Strong problem-solving and debugging skills * Experience working in cloud environments * Ability to work independently in a remote-first environment * Strong communication skills in English Nice to Have * Experience with OTP, GenServers, Supervisors, Ecto, and LiveView * Experience with PostgreSQL * Knowledge of AWS, Docker, and Kubernetes * Exposure to event-driven architectures and message-based systems * Experience with monitoring and observability tools * Frontend experience with React, Next.js, or TypeScript ## Description We are currently supporting an innovative technology-driven company that is looking for a Senior Backend Engineer (Elixir/Phoenix) to join its growing engineering team. This role offers the opportunity to work on a modern cloud-native platform that processes large volumes of transactions and serves thousands of users daily. You will play a key role in designing, building, and scaling mission-critical backend services while collaborating closely with Product, Engineering, and DevOps teams. Your Responsibilities * Design, develop, and maintain scalable backend applications using Elixir and Phoenix * Build and optimize APIs and business-critical services * Develop highly available and fault-tolerant distributed systems * Contribute to architectural decisions and long-term technical strategy * Improve application performance, security, and reliability * Write clean, maintainable, and well-tested code * Participate in code reviews and mentor other engineers * Collaborate with cross-functional stakeholders to translate business requirements into technical solutions * Support and improve CI/CD processes and engineering best practices