Senior DevOps Engineer, Flutter Functions - Hybrid
Flutter InternationalAbout Betfair Romania Development:
Betfair Romania Development is the largest technology hub of Flutter Entertainment, with over 2,000 people powering the world’s leading sports betting and iGaming brands. Exciting, immersive and safe experiences are delivered to over 18 million customers worldwide, from our office in Cluj-Napoca. Driven by relentless innovation and commitment to excellence, we operate our own unbeatable portfolio of diverse proprietary brands such as FanDuel, PokerStars, SportsBet, Betfair, Paddy Power, or Sky Betting & Gaming.
Our Values:
The values we share at Betfair Romania Development define what makes us unique as a team. They empower us by giving meaning to our contributions, and they ensure that we consistently strive for excellence in everything we do. We are looking for passionate individuals who align with our values and are committed to making a difference.
Win together | Raise the bar | Got your back | Own it | Positive impact
About Flutter Functions
The Flutter Functions division is a key component of Flutter Entertainment, responsible for providing essential support and services across the organization. The division encompasses various corporate functions, including finance, legal, human resources, technology, and more, ensuring seamless operations and strategic alignment throughout the company.
We are expanding our team to support an ambitious cloud‑native and GitOps roadmap, accelerating and standardizing how we build, secure and operate platforms at scale across the group.
You will enable sustainable adoption of cloud and Kubernetes, lead GitOps practices, and provide technical leadership on modern platform engineering: from CI/CD and security scanning to service mesh, policy‑as‑code, observability and cloud networking.
You will work closely with product and engineering teams to ensure availability, performance and security across DEV, QA, PERF and PROD, while mentoring others and driving a strong self‑service culture.
Key Accountabilities & Responsibilities:
- Design, implement and own GitOps workflows using ArgoCD, including ApplicationSets/generator plugins and multi‑environment, multi‑cluster deployment patterns
- Define and maintain Kubernetes platform standards (namespaces, RBAC, Network Policies, ingress, observability, backup/restore, multi‑cluster, etc.)
- Implement and manage policy‑as‑code using OPA/Gatekeeper and Kyverno to enforce security, compliance and best practices across clusters
- Architect and operate an advanced service mesh with Istio, including traffic management, mutual TLS, zero‑trust patterns, resilience and observability
- Use Crossplane (XRDs/CRDs) and Kustomize to deliver fully declarative infrastructure and application configuration, enabling true platform‑as‑code
- Build, maintain and optimize CI/CD pipelines with GitHub Actions, including reusable workflows, environment promotion, releases and rollbacks
- Integrate Trivy, SonarQube and related tooling into pipelines to provide end‑to‑end SCA, image scanning and static analysis, ensuring secure‑by‑default delivery
- Design, implement and operate scalable, resilient solutions on AWS, collaborating on architecture and making pragmatic, high‑impact design decisions
- Manage and optimize content delivery and edge security using AWS CloudFront and other CDNs, including WAF integration and DDoS mitigation
- Implement and evolve observability using Grafana Cloud (Prometheus, adaptive metrics, logging and alerting), ensuring actionable insights and SLO‑driven operations
- Contribute to and at times lead incident response, post‑incident reviews, and continuous improvement of reliability, performance and operability
- Drive automation and self‑service (e.g. GitOps + Crossplane + ArgoCD patterns) to reduce manual work and empower product teams to manage their own infrastructure
- Collaborate closely with development, QA, security and operations teams to align on standards, simplify delivery and remove friction
- Own documentation for the platform, patterns, runbooks and best practices, ensuring they are discoverable and up to date
- Mentor and coach engineers in DevOps / platform practices, GitOps, Kubernetes and cloud; act as a role model for engineering excellence and ways of working
- Engage effectively with technical and non‑technical stakeholders, clearly explaining trade‑offs, risks and options
Skills, Capabilities & Experience Required:
- Strong understanding of cloud‑native operations, Kubernetes platforms and infrastructure as code principles
- 4+ years’ experience running Kubernetes and Docker in production (high‑load, high‑availability environments)
- Hands‑on expertise with GitOps: particularly ArgoCD (ApplicationSets, generator plugins, multi‑cluster, promotion workflows)
- Strong experience with Crossplane (XRD/CRD design, compositions, providers) and Kustomize for environment overlays and reusable configurations
- Deep knowledge of Kubernetes security: OPA/Gatekeeper, Kyverno, Network Policies, secrets management, RBAC and compliance controls
- Advanced experience with Istio (or similar service mesh) – traffic routing, mTLS, authorization policies, canary/blue‑green strategies, observability
- Solid experience designing and maintaining CI/CD pipelines with GitHub Actions, including pipelines as code and environment promotion
- Practical experience integrating Trivy and SonarQube (or equivalent) into CI/CD for SCA, container image scanning and code quality/security checks
- 4+ years of *Linux/nix engineering and administration; strong shell scripting and remote server management (SSH)
- Strong AWS experience (networking, security, IAM, compute, storage, managed services); multi‑cloud knowledge (GCP/Azure) is a plus
- 3–4+ years managing CDNs such as AWS CloudFront, Akamai or Cloudflare, including WAF, caching and edge security policies
- Understanding of DDoS attack mechanisms and mitigation tools (e.g. AWS Shield, CloudFront, Akamai/Cloudflare protections)
- Experience with large‑scale DNS implementations and traffic management strategies
- Hands‑on experience with Grafana Cloud, including Prometheus metrics, adaptive metrics strategies, dashboards and alerting best practices
- Proficiency with Git and modern branching / pull request workflows; comfortable with trunk‑based or GitOps‑oriented models
- Experience with configuration management and IaC tools such as Terraform, Ansible (or similar)
- Proven incident management experience and an ability to make pragmatic operational decisions under pressure
- Strong communication, stakeholder management, mentoring and collaboration skills; able to influence ways of working and uplift the wider team
Benefits:
Hybrid & remote working options
€1,000 per year for self-development
Company share scheme
25 days of annual leave per year
20 days per year to work abroad
5 personal days/year
Flexible benefits: travel, sports, hobbies
Extended health, dental and travel insurances
Customized well-being programmes
Career growth sessions
Thousands of online courses through Udemy
A variety of engaging office events
Disclaimer:
We are an inclusive employer. By embracing diverse experiences and perspectives, we create a lasting, positive impact for our employees, customers, and the communities we’re part of. You don't have to meet all the requirements listed to apply for this role. If you need any adjustments to make this role work for you, let us know, and we’ll see how we can accommodate them.
We thank all applicants for their interest; however, only the candidates who best meet the job requirements will be contacted for an interview.
By submitting your application online, you agree that your details will be used to progress your application for employment. If your application is successful, your details will be used to administer your personnel record. If your application is unsuccessful, we will retain your details for a period no longer than three years, to consider you for prospective roles within the company.