Sr. DevOps Engineer

16 hours ago

Belgrade, Central Serbia Unlimit Full time 40,000 - 80,000 per year
About Unlimit   Unlimit is the global fintech powerhouse behind the world's largest proprietary payments infrastructure. Founded in 2009, Unlimit operates across 17 global offices with 700+ experts, seamlessly integrating 1,000+ payment methods into a single platform. From London to São Paulo, we empower businesses to scale across borders with a unified suite of financial tools — including payment processing, alternative payment methods, multicurrency business accounts, card issuing, banking-as-a-service, and crypto on- and off-ramps. Our mission is to break down financial barriers and enable seamless money movement across borders. We give forward-thinking businesses the tools to accept, send, and manage payments effortlessly, wherever they operate.

We are looking for a Senior DevOps Engineer to lead our DevOps transformation and establish world-class software delivery practices across Unlimit. You will architect enterprise-wide CI/CD strategies, build automation-first solutions, and create the foundation for AI-powered delivery pipelines that will accelerate how we build, test, and deploy the next generation of financial technology products. What You'll Be Doing
  • At Unlimit, we are building the foundation for the next generation of software delivery—where reliability, scalability, and speed come first, and AI is applied thoughtfully to amplify outcomes. As a Senior DevOps Engineer, you will lead this effort by establishing best practices, defining standards, and building the platforms that enable our teams to deliver with confidence.
  • You'll architect company-wide CI/CD strategies, design golden pipelines, and implement GitOps-based deployments and progressive delivery methods that ensure every release is predictable and resilient. Alongside Platform and Security teams, you'll embed governance, observability, and guardrails into everything we build—so that our systems are not only automated, but trusted.
  • Where AI can add value, you will pave the way. From predictive failure detection to automated root cause analysis and intelligent code quality checks, you'll help identify and integrate the right AI-driven capabilities into our delivery lifecycle. Your work will ensure that Unlimit's DevOps foundation is modern, adaptable, and ready for the innovations to come.
  • This is a role for someone who thrives on building from the ground up, setting the standard for how software is delivered, and ensuring that every team—from developers to data scientists—benefits from a robust, future-ready platform.
Qualifications You Bring
  • 4+ years architecting and operating CI/CD systems at scale (e.g., Jenkins, GitLab, GitHub, ArgoCD).
  • 3+ years of production experience with: Docker: Multi-stage builds, BuildKit, image optimization, registry management | Kubernetes: Deployments, StatefulSets, Jobs, CronJobs, Custom Resources | Helm: Chart development, dependency management, testing | Service mesh integration (e.g., Istio).
  • Expert-level GitOps implementation: Argo CD (ApplicationSets, sync waves, resource hooks) | Flux CD (Kustomize integration, multi-tenancy) | Terraform (module development, state management, drift detection) | Policy-as-Code (OPA, Kyverno).
  • 3+ years designing cloud-native CI/CD architectures (AWS required; Azure/GCP a plus).
  • Experience with custom metrics, instrumentation, log aggregation, and large-scale monitoring.
Nice-to-Have:
  • Experience with eBPF-based observability.
  • Certifications such as: AWS DevOps Professional or Azure DevOps Expert | Kubernetes certifications (CKA, CKAD) | Google Cloud Professional DevOps Engineer | Jenkins Certified Engineer.
We offer:
  • Attractive monthly salary paid in line with experience
  • Vacation, sick, and paid holidays
  • Flexible working hours
  • Full-time: 5/2
  • Modern workplace with all necessary equipment
  • A team of top international professionals to learn from
  • Multicultural working environment
Join Unlimit Team now
Unlimit is an equal opportunity employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We welcome applications from all members of society irrespective of age, sex, disability, sexual orientation, race, religion or belief. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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