Senior ​/ Lead Site Reliability Engineer

At the heart of everything we do is our vision to change lives every day, and our mission to grow The National Lottery responsibly and champion its impact.

We are Allwyn UK, part of the Allwyn Entertainment Group - a multi-national lottery operator with a market-leading presence acrossthe USA (Michigan and Illinois) and Europe, including

Czech Republic, Austria, Greece,Cyprusand Italy.

While the main contribution of The National Lottery to society is through the funds togood causes, at Allwynwe put our purpose and values at the heart of everything we do.

Join us as we embark on a once-in-a-lifetime, large scale transformation journey by creating a National Lottery that delivers more money togood causes.

We'lltalk a bit more about us further down the page, but for now
-let'stalk about the role and whowe'relooking for...

At Allwyn, the Senior/Lead Site Reliability Engineer is responsible for technical leadership of reliability engineering across the digital estate, ensuring high availability, performance, and resilience of customer-facing systems during both normal operation and peak lottery events.

The role combines hands-on engineering, incident leadership, and ownership of the SRE improvement backlog and reporting, working across platform, product, and operational teams.

• Own reliability outcomes across services using SLOs, SLIs, and error budgets
• Improve availability, latency, and scalability across Instant-Win and Draw-based platforms
• Lead incident response and operational readiness, including peak jackpot events
• Drive automation and platform maturity, reducing manual operational effort
• Establish clear reporting on reliability, incidents, and service health trends
• Supporting with thought-leadership and developing long-term roadmap

• Define and govern SLOs / SLIs / error budgets across critical services
• Lead reliability design reviews across:
• Player Identity & Protection systems
• CMS and Geolocation services
• Drive architecture improvements for resilience (failover, degradation, scaling patterns)

• Act as incident commander for major incidents and high-severity events
• Lead 1-in-4 on-call rotation, covering:
• Peak jackpot proactive monitoring
• Own end-to-end incident lifecycle:
• Ensure blameless post-mortems with clear remediation ownership

• Define and evolve observability strategy using:
• Cloud Watch (AWS telemetry)
• Quantum Metric (user behaviour insight)
• Standardise:
• Alerting quality and signal-to-noise ratio
• Dashboards aligned to SLOs and customer impact
• Drive correlation between technical signals and user experience
• Lead automation of operational processes using Terraform and scripting
• Improve deployment and release safety (CI/CD, progressive delivery patterns)
• Key contributor to transition strategy for ECS → EKS (Kubernetes adoption)
• Reduce operational toil through tooling, self-healing, observability and platform improvements
• Empower Level-1 operational teams with safe, controlled access to the tools they need to operate autonomously

• Own capacity planning for:
• Lead performance optimisation:
• Throughput scaling
• Cost efficiency (AWS utilisation and associated log costs, observability license consumption)
• Own and prioritise the SRE backlog, balancing:
• Reliability improvements
• Automation opportunities to reduce/offload toil
• Produce structured reporting covering:
• SLO performance
• Incident trends and MTTR
• Platform health and risk areas
• Provide clear updates to engineering leadership and business stakeholders
• Embed SRE practices across engineering teams
• Mentor engineers and SREs on:
• Reliability engineering
• Observability
• Promote a culture of automation, measurement, and continuous improvement
• Supporting with thought-leadership and developing long-term SRE roadmap for Digital Operations

• Strong experience in cloud environments, ideally AWS (ECS, with exposure or experience in EKS/Kubernetes)
• Hands-on experience with:
• Terraform (Infrastructure as Code)
• Observability stacks (Splunk, Cloud Watch, Grafana)
• Strong…