Senior Platform Engineer | Kubernetes

Senior Platform Engineer | Kubernetes Cozycozy is the only platform that gives you real‑time access to all available holiday accommodations, with over 20 million listings across more than 100 booking sites. We are growing rapidly, present in over 50 countries in 20 languages, and have offices in Paris and Budapest. About the Role We are looking for an experienced Senior Platform Engineer to lead the operation and evolution of Kubernetes on a hybrid environment (bare metal & cloud) that powers our high‑availability B2C services. Position is a hybrid role based in central Paris. Your Mission Kubernetes Platform & Infrastructure Operations Own the operation, reliability, and evolution of our Kubernetes clusters in production across both cloud and on‑premises environments. Design, implement, and maintain secure, scalable infrastructure for containerised workloads. Lead cluster lifecycle management: upgrades, capacity planning, performance tuning, and failure recovery. Implement and manage secrets management, networking, and access control in a Kubernetes‑first environment. Ensure platform reliability through strong SLO/SLI definitions, alerting, and participation in incident response and post‑mortems. Automation, Reliability & Observability Drive automation using Infrastructure as Code (Terraform, Ansible) and GitOps principles. Build and maintain full‑stack observability (metrics, logs, traces) for platform and workloads. Continuously improve operational excellence through better alerting, runbooks, and reliability practices inspired by SRE principles. Contribute to capacity, performance, and cost optimisation initiatives across the platform. Platform Evolution & Engineering Standards Contribute to the design and evolution of our hybrid platform architecture, working closely with the Head of Engineering. Help define and maintain platform standards for security, reliability, and infrastructure tooling. Maintain clear, high‑quality documentation to support self‑service and knowledge sharing across teams. Developer Enablement & CI/CD Design and maintain CI/CD pipelines (GitLab CI, GitHub, Jenkins) for containerised microservices. Support developer teams by improving deployment workflows and operational tooling. Collaborate on self‑service infrastructure initiatives that improve developer productivity. About You 5+ years of experience in Platform Engineering, Infrastructure, SRE, or DevOps roles. Deep, hands‑on experience operating Kubernetes in production, including upgrades, scaling, and incident response. Experience managing hybrid environments (cloud + on‑prem / bare metal) for high‑traffic systems. Strong Infrastructure‑as‑Code experience (Terraform, Ansible, etc.). Solid understanding of observability, alerting, and reliability engineering. The ability to take ownership of complex systems and improve them incrementally and sustainably. Strong communication skills in English and the ability to collaborate across teams. Nice to have Experience with database platforms at scale (PostgreSQL, MongoDB). Strong networking fundamentals in high‑availability environments. Prior startup experience defining platform or infrastructure standards. What We Offer / Benefits Join a unique, international team that powers hyper‑growth across more than 50 countries. We offer competitive salary, Alan health insurance, Swile card, office in Paris with unlimited coffee, tea, snacks and drinks, and the opportunity to mentor and guide engineers. Hiring Process HR interview with Mia, Head of Talent 1:1 interview with the Hiring Manager Technical case exercise with Engineering stakeholders Meet the CEO & team Next Steps After reviewing your application, we will notify you with an update as soon as possible. You can also visit www.cozycozy.com and follow us on LinkedIn, Instagram, TikTok, and Facebook. #J-18808-Ljbffr