Observability Engineer
FDJ United is looking for a talented and driven Site Reliability Engineer to join the team as an Observability Engineer. This role plays a key part in building the next generation of a high-performance observability framework. The successful candidate will be at the heart of designing, developing, and operating systems that provide the engineering organisation with deep visibility into the health, performance, and reliability of products and infrastructure.
FDJ United requires the engineer to work closely with teams across the business to ensure the observability stack is scalable, reliable, and fit for purpose in a fast-moving, high-stakes environment. The current framework is built around VictoriaLogs and VictoriaMetrics, with a strong emphasis on OpenTelemetry for metrics and log ingestion. The engineer will help shape the evolution of this framework, contribute hands-on to its development, and maintain it within a high-traffic production site.
- Designing and developing a next-generation, high-performance observability platform using modern tooling and best practices.
- Driving the adoption and implementation of OpenTelemetry for metrics and log ingestion across the organisation.
- Building and maintaining Infrastructure as Code and configuration management pipelines to automate platform operations.
- Contributing to CI/CD pipelines and deployment workflows to support continuous delivery of observability components.
- Owning and improving the reliability, scalability, and performance of the observability stack.
- Collaborating with engineering teams to define and track Service Level Indicators and establish reliability standards.
- Participating in code reviews, architectural discussions, and technical planning sessions.
- Supporting capacity planning, release processes, and change management practices.
- Championing an automation-first mindset and contributing to a culture of operational excellence.
- Proven experience with Infrastructure as Code, specifically Terraform (required)
- Configuration management experience using Ansible and/or Chef (required)
- Strong scripting and development capabilities in Bash, Python, and Go (required)
- Experience with Rust and/or Java (nice-to-have)
- Solid understanding and hands-on experience with Git and GitLab (required)
- Experience with ArgoCD and/or Jenkins for CI/CD pipeline management (required)
- Experience with metrics platforms such as Prometheus, Mimir, InfluxDB, or VictoriaMetrics (required)
- Experience with log aggregation tools such as Splunk, Loki, Elasticsearch, or VictoriaLogs (required)
- Experience with visualisation tools like Grafana (required)
- Experience with log forwarding tools like FluentBit or Vector.dev (required)
- Experience with OpenTelemetry metrics and log pipeline (required)
- Strong experience with Docker and/or Podman (required)
- Experience with Kubernetes including workload management and cluster operations (required)
- Experience with Helm for Kubernetes package management (required)
- Hands-on experience with AWS (required)
- Understanding of systems architecture and complex distributed systems (required)
- Knowledge of networking principles including TCP/IP, DNS, load balancing, and proxies (required)
- Understanding of TSDB principles including storage, retention, cardinality, and query patterns (required)
- Understanding of logging principles including structured logging and log management at scale (required)
- Understanding of messaging queues, pub/sub patterns, and event-driven architectures (required)
- Understanding of clustering principles including high availability, fault tolerance, and distributed coordination (required)
- Understanding of load balancing strategies and traffic management (required)
- Understanding of API and JSON principles including RESTful APIs and data serialisation (required)
- Understanding of caching mechanisms (required)
- Experience with code reviews (required)
- Experience with testing and technical documentation (required)
- Agile mindset (required)
- Automation mindset (required)
- Experience with AI concepts and tooling (nice-to-have)
- Knowledge of microservices architecture (required)
- Experience with change management (required)
- Experience with Service Level Indicators (required)
- Experience with capacity planning (required)
- Experience with release processes including progressive delivery and feature flags (required)
- Learning and development opportunities
- Social events and activities
- Inclusion networks
- Employee Assistance Programme
- Private medical insurance
- Long service awards
- Pension
FDJ United is one of Europe's largest gaming and betting groups, formed after French lottery operator La Française des Jeux (FDJ) acquired Kindred Group - the company behind Unibet - in 2024 and rebranded the enlarged group in 2025. Headquartered in Boulogne-Billancourt, France, it operates lottery, online sports betting, casino and poker across multiple European markets and Australia. Its portfolio includes well-known online brands such as Unibet, 32Red and Maria Casino, alongside FDJ's French lottery and retail network. The group is listed on the Euronext Paris exchange.