Senior Backend Developer

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

• 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

• Fully remote working model within Germany
• Flexible working hours
• Modern technology stack and engineering culture
• High degree of ownership and autonomy
• Long-term career development opportunities
• Collaborative and international team environment
• Competitive salary and benefits package
• Work-life balance focused culture

Halian Group: With over 28 years of experience, we have come to understand that innovation is the only way to provide agile, practical solutions that transform businesses and careers. Our resourcing and smart services help you to realize tomorrow’s potential. Discover the amazing things possible when you bring the right people and the right technologies together. At Halian, we recognize that diversity, equity, and inclusion (DEI) are essential to building high-performing teams for our clients. We are committed to connecting organizations with top talent from all backgrounds, ensuring that every individual feels valued, respected, and empowered to contribute their unique perspectives. We encourage applications from all qualified candidates, regardless of race, gender, disability, or any other characteristic that makes them unique. By fostering diverse and inclusive workplaces, we help our clients drive innovation, enhance collaboration, and better reflect the communities they serve. #LI-LB6