Senior Software Engineer - Platform Engineering

About the role

Cast AI is an automation platform that runs cloud-native and AI infrastructure at scale, embedding autonomous decision-making into Kubernetes and cloud environments. Its Platform team builds and maintains the shared tools engineers use to build, deploy and observe their services, so that reliability is achievable and teams can focus on their products. This is a location-specific opportunity open to candidates living in the listed European countries, working remotely.

Key responsibilities

• Design, build and operate the CI/CD pipelines used by every engineering team.
• Build and maintain the observability and monitoring tooling teams use to debug production systems.
• Build local development environment tooling so engineers can reproduce production-like conditions on their laptop.
• Reduce friction for other teams by finding where engineers lose time to infrastructure and fixing it at the root.
• Debug complex issues spanning CI/CD, observability tooling, Kubernetes and cloud infrastructure.
• Contribute to the platform roadmap and backlog.

Required profile

• Strong software engineering fundamentals and clean, maintainable code.
• Production experience with Go strongly preferred; comparable systems programming skills accepted.
• Experience building and operating CI/CD, GitOps, infrastructure-as-code, container orchestration, observability and cloud tools.
• Experience with AI coding agents and agentic development workflows.
• Has personally driven a complex project end-to-end.
• Strong debugging, optimization and performance-tuning skills, and strong written and spoken English.
• Startup mindset, adaptable and comfortable with ambiguity; on-call rotation required for some teams.

Required skills

• Go
• Kubernetes, Helm, Terraform, GitLab CI, Argo CD, Kargo
• Grafana, VictoriaMetrics, Loki, Tempo, ClickHouse
• Nice to have: Kubernetes operators, Helm chart authoring, admission webhooks, internal developer platform design, devcontainers, OSS contributions

What we offer

• Salary of EUR 6,500 to 9,000 gross plus separate on-call compensation.
• Flexible, remote-first global environment with equity options.
• 10% of work time for personal projects, learning budget, annual hackathon and team events.
• Equipment budget and extra days off; travel to Vilnius for onboarding covered.

Hiring process: recruiter screening, hiring manager interview, system design technical interview, live coding, culture check with an executive, and a possible background check. No visa sponsorship is provided.