As part of Adevinta's global teams, the Trust and Connecting department offers expertise and solutions to resolve user and marketplaces' security and transaction issues, helping millions of online users to trade securely every day. Within the "Trust and Connecting" division, the Serenity team plays a key role in achieving our "Most Trusted" objective, building and operating the moderation and fraud detection component used by our marketplaces worldwide. Serenity has been a great success since its launch; it is currently integrated in 10 marketplaces and uses the latest Machine Learning techniques to moderate over 20 million events per day. Our team is distributed in Paris, Vienna, Amsterdam, Barcelona and made of 10+ nationalities; this position is located in Barcelona – Poblenou (22@). As a Senior Site Reliability Engineer (SRE), you will be responsible for ensuring and improving the reliability of a scalable, state-of-the-art system. You will collaborate with the team to build solid technological expertise and shared business knowledge. If you like being part of a team of engineers involved from ideation to production start-up and operations monitoring, working with the latest technologies with a technologically independent mindset, and being part of an international environment, you could be the person we're looking for. You'll be part of a team that works with full ownership of solutions, which means you'll have a direct impact on our roadmap and help shape the way we work. ResponsibilitiesBuild and maintain a state-of-the-art system at scale (we operate around 100 microservices)Be part of a cross-functional team working with full ownership of the solution (from ideation to operationalization).Operate, maintain existing infrastructure and ensure its evolution (1800+ Kubernetes pods, large RDS, Elasticsearch or Redis clusters)Ensure that CI/CD processes always deliver the best possible developer experience (we currently use Spinnaker, Github Enterprise, Travis CI, Artifactory)Continuously monitor the health and quality of our systems, while ensuring their stability and security.Encourage and build automation wherever possibleConstantly improve our work processes and encourage best practices.Keep abreast of the latest technologies in distributed systems and cloud technology.Strong problem-solving skills QualificationsExcellent written and oral communication skills (B2+ English level required)Solid understanding of Cloud solutions (specifically AWS)Significant experience with distributed systems, microservices architectures and observability conceptsKnowledge of technologies used on a daily basis (AWS, Kubernetes, Helm, Kafka, Elasticsearch, Redis, Postgres, DynamoDB, Datadog, Grafana, …) Ability to write Python 3 code or code in any similar languageExperience of working collaboratively with geographically distributed teams would be a plus Benefits :Yearly training budgetIn the Barcelona office, we offer free breakfast and drinks. You can also choose to eat the freshly prepared menu of the day in our canteen. The steps : 1st phone screening with RecruiterTechnical interview focusing on System and Infrastructure Design (remote / VC)Technical interview focusing on Coding skills (remote / VC)Culture fit interview with the Hiring Manager and Recruiter (remote or onsite)