Senior DevOps Engineer (Cloudflare)

Big Stars is an end-to-end product engineering company based in Belgrade, Serbia. We create a space where people take initiative and go big. We focus on: - turning outdated systems into high-performing engines - creating clean products that users actually love - designing stable and secure environments - building complex tech products We are looking for a skilled Senior DevOps Engineer in our office in Serbia, Belgrade. ✅ Responsibilities : Multi-CDN & Edge Management: Manage and optimize Edge Services across multiple providers, including Cloudflare, Fastly, and Gcore . This includes configuring DNS, CDN, Edge Computing (Snippets/Workers), Access Control, and WAF policies. Provider-Agnostic Resilience: Design and implement cloud-agnostic failover strategies and high-availability solutions to ensure service continuity, preventing vendor lock-in and dependency on a single provider. Traffic & Performance Engineering: Monitor and fine-tune HTTP traffic handling, global load balancing (GSLB), and caching strategies to minimize latency and optimize content delivery at a global scale. Mass Domain & SSL Management: Orchestrate configurations for a large-scale domain portfolio, including automated SSL/TLS provisioning and unified security policy enforcement across different platforms. Advanced Infrastructure as Code (IaC): Maintain reusable and scalable configurations using Terraform or OpenTofu to manage diverse provider environments, ensuring infrastructure is auditable and consistent. Security & Web Protection: Collaborate with security teams to implement robust Rate Limiting, DDoS mitigation, and Bot Management across the network and application layers. Observability & Incident Response: Participate in on-call rotations, perform root cause analysis (RCA), and tune performance for both edge and application layers using centralized monitoring tools. CI/CD & Automation: Integrate edge configuration changes into CI/CD pipelines , automating deployments and ensuring rigorous testing of infrastructure changes. ✅ Must Have: 2+ years in DevOps, Site Reliability, or related roles with a focus on Cloudflare services. Solid understanding of HTTP protocol, caching principles, and CDN concepts . Experience managing Cloudflare DNS, Firewall Rules, Page Rules, Workers, and related services . Strong knowledge of Nginx (or similar: Envoy, HAProxy) for reverse proxy and load balancing. Proficiency with Infrastructure as Code concepts and practical experience with Terraform . Understanding of networking fundamentals including TCP/IP, routing, and security best practices. Experience working with Linux environments and scripting (Bash, Python, or similar) . ✅ Nice to Have: Experience with Cloudflare Enterprise features (Argo, advanced caching, Cloudflare Workers KV). Experience with performance testing and analysis tools for CDN and edge optimization. Familiarity with container orchestration systems (Kubernetes). Experience with CI/CD systems (GitLab CI, Jenkins). Basic security knowledge (SSL management, security headers). ✅ We offer excellent benefits, including but not limited to: 🏝 24 vacation days annually 🤒 6 sick days without a medical certificate 🏥 Premium Health Insurance (coverage up to 5,000 EUR annually) 🎉 Special occasion gifts: birthday, wedding, newborn 📚 Learning & Development budget (for conferences, courses and certifications) 🌍 Corporate events: international parties, team buildings, activities 📈 Career growth opportunities in a fast-growing company ✈️ Relocation package for international candidates 🏋️ Sports package (FitPass membership) 🗣️ Language classes: Serbian & English (company-covered) Big Stars paves the way to excellence by helping people grow.