Our Client is an international organization developing a modern, highly available digital platform used by millions of users.The project focuses on building and maintaining scalable cloud infrastructure, automating processes, improving reliability, and implementing Site Reliability Engineering (SRE) best practices.We are looking for an experienced Senior Site Reliability Engineer who will take ownership of production environments, enhance observability, and automate the entire application lifecycle.WORK MODE 100% remoteRESPONSIBILITIES Designing, implementing, and scaling resilient infrastructure in AWS (multiple accounts, production and pre-production environments) Maintaining and evolving Kubernetes (EKS) environments using Helm, ArgoCD, and Terraform, ensuring predictable and auditable deployment processes Collaborating with product and platform teams on SRE best practices (SLIs/SLOs, error budgets, reliability reviews) Building and improving observability using Dynatrace, Grafana, cloud-native metrics, and open-source tools Optimizing Cloudflare configuration (WAF, cache and routing rules, perimeter security) to improve performance and security Automating infrastructure, deployments, and routine tasks using GitHub Actions, Python, and Bash Participating in incident response, leading post-mortems, and turning lessons learned into tangible improvements REQUIREMENTS Minimum 5 years of experience in an SRE/DevOps role in AWS-based production environments (AWS preferred, Azure acceptable) Strong proficiency with Terraform, Helm, ArgoCD, and GitHub Actions Excellent knowledge of Kubernetes (EKS) – autoscaling, rollout strategies, troubleshooting, cluster architecture Experience building and maintaining observability pipelines (logs, metrics, traces, SLIs/SLOs, alerting) Ability to design high-availability and fault-tolerant systems Solid understanding of CI/CD principles and GitOps practices Experience with Cloudflare (DNS, CDN, WAF, rulesets) Hands-on experience with monitoring tools such as Dynatrace, Prometheus, and Grafana Very good command of English (collaboration with teams in Europe and the US) Experience in incident response: on-call rotations, RCA, post-mortems Nice to have Examples of improvements introduced in the areas of SLO/SLI management or alert fatigue reduction Contributions to automation or observability tooling Experience leading reliability reviews and promoting a post-mortem culture Interest in resilience engineering and knowledge sharing within the SRE community WHY JOIN? Stable, long-term B2B cooperation directly with the end client Work on high-scale projects with real impact on a platform used by millions of users Full technical autonomy with real influence over architecture, solutions, and reliability standards 100% remote work, flexible hours, and an async-friendly environment Mature engineering culture, partnership-based collaboration, and teamwork with experts from Europe and the US Access to a modern tech stack: AWS, EKS, Terraform, ArgoCD, Cloudflare, Dynatrace, and cloud-native tools TQLO Sp. z o.o. – Employment Agency (KRAZ No. 33580)Thank you for all applications. We will contact selected candidates.