(Sr) Software / Platform Engineer (80%-100% Zurich or Bern Hybrid) Are you a Platform or Software Engineer passionate about accelerating developer feedback loops with world-class CI and developer tooling? Join us as we help engineers build, test & release software. You’ll evolve our CI pipelines, engineer tooling and fleet of build agents that turns code into reliable builds, tests, and artefacts. About the team You’ll join the team responsible for continuous integration (CI) and developer tooling that helps engineers go from code to artefacts (binaries, containers, …) and supports teams across engineering with the tooling and infrastructure they use every day. This includes managing the fleet of build agents and enabling consistent, fast feedback loops for building and testing software. We work in a single-repository environment (“one repo to rule them all”) and strive to uphold a strong developer experience and sustainable engineering practices, such as keeping the mainline releasable and preferring short‑lived branches. Your Mission As a Software / Platform Engineer on the CI & Developer Tooling team, your mission is to accelerate and harden the developer feedback loop by building and maintaining the CI pipeline and the tooling engineers use to write, build, and test software. You will: Own and evolve the CI pipeline so engineers can reliably build and test changes with fast, actionable feedback. Design and maintain developer tooling (local workflows, test tooling, build tooling, templates, helpers) that reduces friction and improves consistency. Operate and improve the build infrastructure and build-agent fleet that turns code into build artefacts. What you bring (Required) Experience level We are open to applicants at 2 experience levels. Experienced: 2 years of relevant professional experience, or Senior: 4 years of relevant professional experience. Core skills Software engineering experience with at least one modern programming language — Golang, Java, or Rust (required). Strong automation skills using scripting languages such as Python and/or Bash (required). Solid DevOps experience in container environments (required) — e.g., building/testing/deploying in containerized runtimes, working with container images, CI runners, and reproducible environments. Comfort working across the lifecycle from implementation to deployment/operations in an engineering context. A pragmatic mindset for building tools that developers love: you value usability, documentation, and fast feedback. AI-assisted development Curiosity and enthusiasm for experimenting with AI coding assistants (e.g., using them to accelerate prototyping, refactoring, test generation, and documentation while keeping quality and security high). Bonus skills (Nice to have) Extensive, hands-on Golang experience (bonus, in addition to the “modern language” requirement). Experience with monorepos and trunk-based development workflows. Experience designing developer tooling platforms (CLIs, shared libraries, templates/scaffolding, internal services, test harnesses). Experience scaling build/test systems (parallelization strategies, caching approaches, flaky test reduction, build performance tuning). What we offer The chance to work on the core systems that shape the daily experience of every engineer: CI, build/test tooling, and developer productivity. High ownership: you’ll deliver improvements that are immediately felt across engineering. A team culture that values well-documented, repeatable workflows and continuous improvement. About Open Systems Open Systems is a leading provider of native Managed SASE solutions, converging network and security functions on a cloud-native platform. Founded in 1990, the Swiss cybersecurity company, headquartered in Zurich, supports businesses and organizations in more than 180 countries with a holistic, customer-centric service model that guarantees 24x7 expert support. The combination of an innovative platform, integrated solutions, and excellent service ensures secure, reliable, and worry-free network operations – even within the complex IT infrastructures of global manufacturing companies and NGOs.