Site Reliability Engineer
Casumo is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Join us at Casumo, where you are invited to be your authentic YOU-MO! Welcome to Casumo, your passport to a world of fun, excitement, and responsible gaming. We're an international online casino company with a knack for creating unforgettable gaming experiences. Our secret sauce? A blend of innovation, security, and a dash of playful charm. Nowadays, we're on the hunt for a curious and problem-solving oriented Site Reliability Engineer! As a Site Reliability Engineer, you’ll play a key role in ensuring the reliability, scalability, and performance of our production systems. You’ll work closely with engineering teams to build resilient infrastructure, improve observability, and drive operational excellence.
- Operate, scale, and continuously improve our production Kubernetes clusters on Google Cloud Platform (GCP).
- Manage and provision cloud infrastructure using Infrastructure as Code (Terraform).
- Maintain and optimise critical messaging and event-streaming systems (RabbitMQ, Kafka).
- Manage edge networking, traffic routing, and security using Cloudflare.
- Improve CI/CD pipelines to enable safe, fast, and reliable deployments.
- Partner with development teams to optimise Java services (JVM tuning, connection pooling, container resource allocation).
- Manage and troubleshoot logging and observability tools (e.g. Elasticsearch, Kibana).
- Support and advise on high-availability data stores such as MySQL and ClickHouse.
- Lead incident response as Incident Commander during major production events.
- Coordinate cross-functional teams and communicate effectively with both technical and non-technical stakeholders.
- Conduct blameless postmortems and drive improvements to prevent recurring issues.
- Design and execute load testing strategies to validate system performance under peak conditions.
- Define and maintain Service Level Objectives (SLOs) and Service Level Indicators (SLIs).
- Improve monitoring and alerting using Prometheus and Grafana, reducing noise and improving MTTR.
- 3+ years of experience in Site Reliability Engineering, DevOps, or similar roles.
- Strong hands-on experience with Kubernetes in production environments.
- Solid experience with GCP (or another major cloud provider).
- Proficiency with Infrastructure as Code tools (Terraform preferred).
- Experience with messaging systems or event streaming platforms (RabbitMQ, Kafka).
- Strong troubleshooting skills across infrastructure, networking, and application layers.
- Experience handling production incidents and conducting postmortems.
- Scripting and automation skills (e.g. Bash, Python).
- Strong Linux systems knowledge.
- Experience running MySQL or ClickHouse in production (HA, replication, failover, backups).
- Experience in high-scale environments (e.g. iGaming, fintech, SaaS).
- Experience implementing and evolving SLO/SLI frameworks.
- Private health insurance
- Wellness incentives, including a fitness allowance and mental well-being services
- Flexible national holidays: public holidays mean more time off, choose how and when to enjoy them!
- 2 weeks Work From Anywhere (10 days), increased to 4 weeks (20 days) after longer duration of employment within the Company: explore the world while working remotely
- Gourmet lunches and healthy snacks prepared by our in-house chef
- Variety of discounts from local vendors
- Access to some of the greatest tools and platforms for developing your professional skills and building success within your role
- A range of training courses, known as Casumo College, for continuous learning and growth
- Social events for building strong relationships with colleagues from all across the organisation
At Casumo, we don’t do “ordinary.” We launched in Sweden in 2012 to shake up the online casino world, and we’ve been colouring outside the lines ever since. Today, we’re live across regulated markets under licences from the MGA, Gibraltar, UK, Sweden, and Spain. We’re bold, but we’re also buttoned-up where it counts. Inside the Umoverse, you’ll find thousands of games, a live casino, a slick sportsbook, daily campaigns (we call them Umodays), live leaderboards (Umoboards), and an award-winning app built to make play fast, fun, and seamless. Behind it all? A team of 45+ nationalities spread across Malta, Gibraltar, North Macedonia, Croatia, Spain, and Serbia - curious minds who thrive on creativity and collaboration. Our vision? To create a trusted, responsible gaming environment that transforms everyday moments into lasting memories.