Software Developer .NET

• 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.

• Experience Level: 6+ 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.

• 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
• Paessler is a fast-growing midsized company that has been in the market for 20 years. The company is focused on long-term goals and is currently comprised of 400+ employees

Are you an experienced .NET developer who wants to shape the future of network monitoring software used by IT teams around the world? Our PRTG Core Team is looking for a Senior Software Developer to help us plan, build, and modernize the features our enterprise customers rely on every day. Working within a small, agile team, you’ll take ownership of architecture and code quality, share your expertise through code reviews and knowledge transfer, and collaborate closely with our product manager to bring your own ideas to life. As part of Paessler, you’ll also have plenty of room to grow, explore new technologies like AI/ML and Rust, and enjoy a structured onboarding into an enthusiastic, international team.