Open Source Software Engineer – Mid/Senior

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November 8

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Kubermatic

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B2B • Enterprise • SaaS

Kubermatic is a cloud-native infrastructure company that provides automated, enterprise-grade Kubernetes platforms and services for hybrid, multi-cloud, on‑prem and edge environments. Its product portfolio includes the Kubermatic Kubernetes Platform for large-scale cluster automation, KubeOne for single-cluster installation and support, KubeLB for multi-tenant load balancing, Kubermatic Virtualization to run VMs on Kubernetes, and a Developer Platform (KDP) to accelerate developer productivity. Kubermatic offers managed subscriptions, open-source components, and integrations across major clouds and infrastructure stacks to help organizations operate thousands of clusters with reduced management overhead and improved resource efficiency.

51 - 200 employees

Founded 2016

🤝 B2B

🏢 Enterprise

☁️ SaaS

📋 Description

• Develop and maintain upstream kcp projects under the CNCF umbrella, contributing to a project envisioned to support one million workspaces across 10,000 shards. • Design and implement Kubernetes controllers and operators that power multi-tenant platforms at scale. • Write secure, well-tested, and performant code that meets production standards for distributed systems. • Implement CI/CD automation and end-to-end testing workflows that ensure reliability at scale. • Engage with the CNCF community and contribute to roadmap discussions for kcp and related projects. • Represent Kubermatic's values in public communications and community contributions. • Participate in code reviews, maintaining high standards for a distributed systems environment. • Contribute to the Kubermatic Developer Platform.

🎯 Requirements

• Real-world experience building Kubernetes controllers and operators, with an in-depth understanding of Kubernetes API machinery and core controllers. • Proven ability to write clean, maintainable, and efficient code for cloud infrastructure. • Comfort with container technologies, cloud-native architectures, and the challenges of building systems at scale. • Ability to articulate complex technical and architectural problems and propose iterative solutions. • A pragmatic and collaborative mindset with a focus on results and shipping quality software (we often pair on complex features). • Excellent English communication skills for documentation, code reviews, and community engagement. • Track record of contributions to open source projects in the cloud-native space is a strong plus. • Experience with CNCF projects or Kubernetes ecosystem tools is highly desirable.

🏖️ Benefits

• B2B contracts available, with annual paid time off plus local bank holidays • Remote-first: work from anywhere in Europe (CET ±4h) • A dynamic yet laid-back team environment • Regular hackathons and company offsite meetings • Best-in-class development tools of your choice • Full support for training, certifications (CKA, Linux Foundation, etc.), and conference attendance • As a CNCF member, you get access to certified courses and first-class information about the Kubernetes ecosystem • Speaker support: we'll back you if you want to present at events • Active community involvement: enjoy our meetups and our flagship community conference, ContainerDays