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- turning outdated systems into high-performing engines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.