Senior .NET Developer, Linux

September 20

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Heimdal®

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Heimdal is an industry-leading unified and AI-powered cybersecurity solutions provider established in Copenhagen in 2014.

51 - 200 employees

📋 Description

• Take full technical responsibility for a new agent-based product targeting Linux systems: define and evolve architecture, delivery pipeline, and integrations • Design and build a cross-platform system daemon in .NET 8+, optimized for Ubuntu, CentOS, and Red Hat systems • Interface with system-level components (package managers, daemons, logs, etc.) to provide seamless and native-like behavior • Collaborate with internal cybersecurity teams to ensure secure design and implementation across all layers of the agent • Use Linux scripting (Bash) to streamline deployment, debugging, and operational tasks • Work alongside DevOps, backend, and security engineers to align on architecture and deployment strategies • Help onboard additional team members (developers, QA) and guide technical direction as the product evolves • Maintain clear documentation, and contribute to testing and code quality strategies

🎯 Requirements

• 5+ years of experience as a .NET developer, with strong hands-on experience in .NET Core or .NET 8+ • Strong Linux expertise: Comfortable developing and debugging on Linux (Ubuntu, CentOS, Red Hat), including working with system services and terminal tools • Proficiency in Bash scripting for automation, deployment, or operational tasks • Solid understanding of cybersecurity fundamentals and secure software development principles • Experience building and deploying cross-platform applications using .NET • Familiar with REST APIs, microservices, and general principles of scalable backend communication • Self-driven, structured, and capable of working independently in a startup-like environment • Nice to have: Experience building software agents or system daemons • Nice to have: Exposure to low-level Linux internals, system calls, or inter-process communication • Nice to have: Familiarity with CI/CD pipelines, automated testing, and infrastructure as code • Nice to have: Experience working with containerized applications (e.g., Docker) • Nice to have: Cloud exposure (Azure, AWS, or GCP)

🏖️ Benefits

• Possibility to work remotely • Social Security (including Public Health Insurance) • Work Accident Insurance • Transport Premium and Attendance bonus • Pension • The 13th salary • 21 PTO (in addition to the 12 public holidays) • Additional company paid time off such as personal day (1 day per year) and anniversary days (1 day for each year spent in Heimdal®) • Personal and professional development (training and certification) • Challenging and interesting projects • Fast growing company with huge personal and professional growth potential • Driven and awesome team of dependable and dedicated people • Fun, flexible and relaxed work environment