Site Reliability Engineer

Site Reliability Engineer (Core Analytics Infrastructure) Join to apply for the Site Reliability Engineer (Core Analytics Infrastructure) role at Criteo What You’ll Do The Platform Core group at Criteo is composed of seven agile, human‑sized teams that provide the foundational platform and systems powering all Criteo products. The Analytics Infrastructure team builds and operates distributed, multi‑datacenter analytic data stores and platforms enabling interactive querying, exploration, and large‑scale data processing for internal and external use cases. You will join a highly skilled engineering environment managing some of the largest analytical systems in Europe, supporting massive data volumes and high concurrency across hundreds of services and applications. Design, build, and evolve multi‑datacenter, large‑scale analytic systems focused on performance, scalability, and resilience. Operate and improve core analytical data stores such as Vertica, Presto, Druid, Tableau, and related systems. Ensure high reliability and low latency for systems accessed by diverse internal and external clients. Automation, Tooling & Platform Engineering Build and maintain end‑to‑end automation stacks using tools such as Chef, Mesos, Docker, and Kubernetes. Develop internal management, deployment, and monitoring tools, primarily in Scala, with opportunities to use Python or Ruby. Enhance self‑service capabilities to empower engineering teams while maintaining high operational standards. Reliability, Incident Ownership & Continuous Improvement Own the full lifecycle of reliability: monitoring, troubleshooting, on‑call rotation, incident management, root‑cause analysis, and long‑term fixes. Define and implement best practices for observability, automation, SLIs/SLOs, capacity management, and cost/performance optimization. Drive technical innovation, migrations (including to Kubernetes), and reliability improvements across platform components. Collaboration & Technical Leadership Partner with product teams, data stakeholders, and platform engineers to ensure consistency, usability, and performance. Share technical vision, contribute architectural proposals, and influence system evolution across the organization. Document processes and systems extensively to improve onboarding and daily operations. Who You Are Technical Background Master’s or PhD in Computer Science (or equivalent experience). 5+ years in backend engineering, SRE, DevOps, or distributed systems. Strong coding skills in Scala, Java, or another statically typed language; scripting experience in Python or Ruby. Deep understanding of distributed systems: design, tuning, scalability, reliability. Experience with analytic databases and concepts such as query optimization, concurrent data access, and large‑scale storage. Infrastructure & Operations Skills Solid experience with Linux/UNIX environments. Hands‑on knowledge of container technologies (Docker) and orchestration systems (Mesos, Kubernetes). Strong SRE mindset: passion for automation, observability, reliability, documentation, and reducing toil. Familiarity with CI/CD pipelines, configuration management, and infra‑as‑code. Soft Skills Excellent communicator—able to explain complex systems clearly and collaboratively. Team player with a proactive mindset. Comfortable working in high‑scale environments and taking ownership of complex problems. Willingness to join the team’s on‑call rotation. We acknowledge that many candidates may not meet every single role requirement listed above. If your experience looks a little different from our requirements but you believe that you can still bring value to the role, we’d love to see your application Who We Are Criteo is a leader in commerce media, helping brands, agencies, and publishers create meaningful consumer connections through AI‑powered advertising solutions. We’re shaping a more open and sustainable digital future for advertising. At Criteo, our culture is as unique as it is diverse. From our offices across the globe or from the comfort of home, our 3,600 Criteos collaborate together to build an open, impactful, and forward‑thinking environment. We foster a workplace where everyone is valued, and employment decisions are based solely on skills, qualifications, and business needs—never on non‑job‑related factors or legally protected characteristics. What We Offer 🏢 Ways of working – Our hybrid model blends home with in‑office experiences. 📈 Grow with us – Learning, mentorship & career development programs. 💪 Your wellbeing matters – Health benefits, wellness perks & mental health support. 🤝 A team that cares – Diverse, inclusive, and globally connected. 💸 Fair pay & perks – Attractive salary, with performance‑based rewards and family‑friendly policies, plus the potential for equity depending on role and level. Additional benefits may vary depending on the country where you work and the nature of your employment with Criteo. Seniority Level Mid‑Senior level Employment Type Full‑time Job Function Engineering and Information Technology – Advertising Services Referrals increase your chances of interviewing at Criteo by 2x Get notified about new Site Reliability Engineer jobs in Paris, Île‑de‑France, France. #J-18808-Ljbffr