Senior DevOps Engineer (Platform Engineer)

Wymagania: - Strong experience as a Platform Engineer / DevOps Engineer operating production systems at scale - Proven +4 years hands-on expertise with AWS, especially multi-account environments and organizational governance - Deep understanding of Infrastructure as Code, particularly Terraform (modules, state management, guardrails) - Solid experience running and operating EKS and/or ECS in production - Strong background in CI/CD, GitHub-based workflows, and secure deployment patterns - Experience designing developer platforms and internal tooling for self-service and standardization - Strong understanding of cloud security, IAM, SCPs, permissions boundaries, and secure networking - Operational excellence mindset: monitoring, logging, alerting, SLOs, and incident handling - In addition to infrastructure and operations, you have hands-on development experience - Professional experience developing services in one or more of: Java / Kotlin (Spring Boot), Node.js / TypeScript - Familiarity with modern API design, service runtime concerns, and container-based workloads - Ability to read, debug, and contribute to application code when needed O firmie: - At Square One Poland we link IT experts with the business. With over 25 years of experience, we specialize in recruitment processes on a global scale. Despite years of experience, we still have a startup DNA and this is our advantage. Our offices are located in London and Warsaw, however, we can reach clients from all over the world, from start-ups to big worldwide corporations. Zakres obowiązków: - Build and maintain core platform components (SSO, Access Management, clusters, networking, CI/CD, observability). - Own Terraform modules, baseline configurations, and guardrails for distributed teams. - Design and evolve platform “golden paths” — secure defaults, templates, and standards.Maintain platform IaC (Terraform, modules, state design, multi-account governance). - Integrate with team-owned CDK stacks through stable platform contracts. - Lead evolution of platform abstraction layers and service catalogs. - Design and manage multi-account AWS landing zone (Orgs, SCPs, permissions boundaries). - Own developer onboarding patterns (IAM SSO access, automation, pipelines). - Build safe cross-account deployment workflows (GitHub OIDC, least privilege). - Design and operate ECS and EKS clusters used by hundreds of services. - Establish best practices for container execution, networking, autoscaling. - Manage central networking components (VPC, TGW, Route53). - Provide self-service tools and templates for teams (pipelines, service definitions, actions).Abstract platform complexity to enable fastand safe deployments for all teams. - Own documentation, workshops, patterns, and architectural guidance.