Senior Software Developer .NET (m/f/d)

• Design, build, and maintain resilient backend services and cross-platform applications supporting Linux, Windows, and macOS.
• Architect distributed systems following modern software architecture, Clean Code principles, and proven design patterns.
• Integrate traditional relational databases and high-performance time-series databases into the core product architecture.
• Leverage modern AI tools within the development lifecycle and explore AI/ML integrations for system observability and automated diagnostics.
• Collaborate across the full lifecycle using modern Git-based workflows, GitLab CI/CD pipelines, and Jira.
• Learn the inner workings of specialized network and IoT monitoring systems to contribute to core domain engineering.

YOUR PROFILE

• Experience Level: 10+ years of software engineering experience on the .NET platform with deep mastery of C#.
• Modern .NET Stack: Extensive experience with .NET Core 9+, utilizing current platform capabilities and high-performance paradigms.
• Distributed Systems: Solid track record designing, building, and debugging complex, high-concurrency distributed systems.
• Cross-Platform Engineering: Hands-on experience developing and deploying services across Linux and Windows (macOS environment experience is a plus).
• Databases & Data Integration: Strong knowledge of SQL, schema design, query optimization, and enterprise database integration.
• Full-Stack / Web Foundations: Proficiency in modern frontend technologies including TypeScript, JavaScript, and HTML.
• Containers & CI/CD: Solid experience with Docker, containerized workflows, Git, and automated CI/CD practices (GitLab, Jira).
• AI-Assisted Engineering: Demonstrated experience or active engagement with AI-driven coding tools (e.g., GitHub Copilot, Cursor, LLM-based tools) to accelerate software delivery. Nice-to-Have Qualifications
• Orchestration & Cloud: Hands-on experience with Kubernetes (k8s) and public cloud deployment patterns (AWS/Azure/GCP).
• Domain Experience: Background in network infrastructure, network monitoring, or IoT sensor data ingestion systems.
• Specialized Storage: Familiarity with high-throughput Time-Series Databases (e.g., InfluxDB, TimescaleDB, QuestDB).
• System-Level Languages: Production experience with Rust, or a strong willingness to learn and apply Rust where ultra-low latency or explicit memory control is needed.
• AI/ML Integration: Hands-on experience embedding AI/ML frameworks or models into enterprise backend workflows. Soft Skills & Working Style
• Strong technical leadership, analytical thinking, and a pragmatic problem-solving mindset.
• Commitment to code quality through peer reviews, automated testing, and clean design.
• Enthusiasm for learning domain-specific protocols and deep network/IoT domain internals.

FACTS FOR YOU

• Many possibilities to further develop your individual skillset
• Innovative and creative work environment with plenty of room for new ideas
• A structured onboarding phase with experienced colleagues
• Flexible working hours and a family-friendly environment
• Permanent employment contract
• A great working atmosphere in an enthusiastic international team with flat hierarchies