Senior Software Systems Engineer - Web Security

Open Systems, a Swiss‑based cybersecurity firm founded in 1990 and headquartered in Zurich, delivers Managed SASE solutions that merge networking and security on a cloud‑native platform for customers in more than 180 nations. The Senior Software Systems Engineer – Web Security will join the team that builds the core web‑security services powering this global offering. In this position you will design, code, and run highly scalable web‑security functions, ensuring they are observable, monitored, and reliably operated. You will own the full lifecycle of these services, from architectural concepts through development, deployment, and ongoing refinement, while working closely with peers in networking, security, cloud, and platform groups. The role also includes becoming certified as a Mission Control Engineer and, when required, spending three months at the Network Operations Center in Honolulu to support the worldwide security infrastructure. The role requires a university degree in Computer Science, IT, Engineering, or a related technical field, together with solid knowledge of TCP/IP, TLS, DNS, HTTP/HTTPS and general network‑security best practices. Experience with Linux/UNIX systems, cloud‑native and containerized environments, and programming in scripting languages such as Python or Bash as well as compiled languages like Go, C++ or Rust is essential. Strong analytical and problem‑solving abilities and fluency in English are also mandatory. Additional assets include familiarity with web‑security technologies such as proxies or Secure Web Gateway solutions, understanding of Zero Trust or SASE architectures, and hands‑on experience with observability, monitoring and troubleshooting of globally deployed services. The position offers meaningful impact, end‑to‑end ownership, technical depth across multiple domains, and the chance to collaborate with international engineers while growing within a culture that values autonomy and knowledge sharing.