📍 Job Overview

• Job Title: Senior Site Reliability Engineer - Cloud
• Company: Criteo
• Location: Paris, Limassol
• Job Type: Full-Time, Remote OK
• Category: DevOps, Infrastructure
• Date Posted: 2025-07-28
• Experience Level: 5-10 years
• Remote Status: Remote OK

🚀 Role Summary

• 📝 Enhancement Note: This role focuses on designing, optimizing, and managing Criteo's cloud infrastructure, ensuring security, scalability, and reliability. It requires a strong background in cloud services, infrastructure, and programming, with a focus on GCP or AWS.

💻 Primary Responsibilities

• 📝 Enhancement Note: The primary responsibilities revolve around designing and maintaining secure, scalable, and efficient cloud infrastructure, optimizing cloud usage, and collaborating with internal teams and cloud providers.

• Design and Implement Cloud Systems: Help design Criteo systems using cloud services, both proactively and in response to teams' requests.

• Answer Complex Cloud Queries: Address intricate cloud-related questions using your expertise, experiments, or by relaying questions to the providers.

• Optimize Cloud Usage: Analyze and optimize Criteo's cloud usage, focusing on reservations, commitments, instance types, regions, and service usage details.

• Prototype and Build Cloud-Based Systems: Develop prototypes to convince other teams of the value of cloud-based systems or build solutions for internal team needs.

• Participate in Infrastructure Provider Comparisons: Contribute to decisions regarding infrastructure provider comparisons, such as GCP vs. AWS vs. Azure vs. on-premises.

🎓 Skills & Qualifications

Education: Bachelor's degree in Computer Science, Engineering, or a related field. Relevant experience may substitute for formal education.

Experience: 5-10 years of experience in cloud services, infrastructure, and programming.

Required Skills:

• Cloud Services: Proven experience with GCP or AWS, with a solid understanding of cloud services in general.
• Infrastructure: Strong experience with large complex infrastructures, including networks and operating systems.
• Programming: Proficiency in programming languages such as Python, Go, Java, etc.
• Infrastructure as Code (IaC): Demonstrated proficiency with modern IaC tools to automate infrastructure provisioning.
• Cloud Cost Management: Understanding of cloud cost management and optimization strategies (FinOps), with experience in analyzing cost structures and implementing cost-saving measures on public cloud platforms.
• Collaboration: Excellent communication skills, with the ability to collaborate with internal peers, cloud provider account teams, and product teams.
• Advocacy: Ability to advocate for projects, gain support from team members and management, and drive initiatives forward.

Preferred Skills:

• Security: Experience with cloud security best practices and evolving security standards.
• Architecture: Familiarity with cloud architecture principles and designing for scalability, availability, and fault tolerance.
• Monitoring: Experience with cloud monitoring tools and services.

📊 Web Portfolio & Project Requirements

📝 Enhancement Note: As this role focuses on infrastructure and cloud services, a portfolio should demonstrate your ability to design, implement, and manage secure, scalable, and efficient cloud infrastructure. Include case studies, architecture diagrams, and documentation showcasing your work.

Portfolio Essentials:

• Cloud Architecture Case Studies: Document your experience designing and implementing cloud architectures, highlighting your decision-making process and the results achieved.
• Cloud Optimization Projects: Showcase projects where you optimized cloud usage, reducing costs and improving performance.
• Cloud Security Initiatives: Demonstrate your involvement in implementing or improving cloud security measures, ensuring compliance with relevant standards and best practices.
• Collaboration and Communication: Highlight your ability to work effectively with various teams, including developers, product managers, and stakeholders, to deliver successful cloud projects.

Technical Documentation:

• Cloud Architecture Diagrams: Include diagrams illustrating your cloud architecture designs, using tools like Lucidchart, Draw.io, or similar.
• Cloud Cost Analysis Reports: Prepare reports detailing your analysis of cloud usage and cost optimization strategies.
• Cloud Security Documentation: Document your approach to cloud security, including policies, procedures, and best practices implemented.

💵 Compensation & Benefits

Salary Range: €80,000 - €120,000 per year (based on market research for senior cloud engineers in Paris and Limassol)

Benefits:

• Health Benefits
• Wellness Perks
• Mental Health Support
• Learning, Mentorship, and Career Development Programs
• Competitive Salary
• Equity
• Performance-Based Rewards
• Family-Friendly Policies

Working Hours: Full-time (40 hours per week), with flexibility for project deadlines and maintenance windows.

🎯 Team & Company Context

🏢 Company Culture

Industry: Advertising technology

Company Size: Medium (3,600 employees)

Founded: 2005

Team Structure:

• Cloud Team: Responsible for implementing secure, scalable cloud practices while optimizing infrastructure and operations.
• R&D Team: Focuses on exploring new technologies, improving existing systems, and driving innovation.
• Collaborative Environment: Encourages cross-functional collaboration, knowledge sharing, and continuous learning.

Development Methodology:

• Agile: The team follows Agile methodologies, focusing on iterative development, continuous improvement, and customer value.
• Infrastructure as Code (IaC): Emphasizes automated infrastructure provisioning, version control, and continuous integration/continuous deployment (CI/CD) pipelines.
• Cloud Provider Collaboration: Works closely with cloud providers, such as GCP and AWS, to stay up-to-date with the latest services and best practices.

Company Website: Criteo

📝 Enhancement Note: Criteo fosters a diverse and inclusive work environment, valuing each employee's unique perspective and encouraging professional growth. The company's R&D team is particularly known for its open, impactful, and forward-thinking culture.

📈 Career & Growth Analysis

Cloud Engineering Career Level: This role is at the senior level, focusing on designing, implementing, and managing secure, scalable, and efficient cloud infrastructure. It requires a deep understanding of cloud services, infrastructure, and programming, as well as strong collaboration and advocacy skills.

Reporting Structure: The senior site reliability engineer reports directly to the cloud team lead or manager and collaborates with various internal teams, including developers, product managers, and stakeholders.

Technical Impact: This role significantly impacts Criteo's cloud infrastructure, ensuring security, scalability, and reliability. It directly influences the performance, availability, and cost-efficiency of the company's cloud services.

Growth Opportunities:

• Technical Leadership: As a senior team member, you will have the opportunity to mentor junior engineers, drive technical initiatives, and contribute to the team's growth and success.
• Architecture and Design: Further develop your skills in cloud architecture and design, taking on more complex projects and driving innovation in Criteo's cloud infrastructure.
• Cross-Functional Collaboration: Expand your role to include collaboration with other teams, such as data engineering, machine learning, or software development, to drive end-to-end solutions and improve overall system performance.

🌐 Work Environment

Office Type: Criteo offers a hybrid work environment, with employees able to work remotely or from one of the company's global offices.

Office Location(s): Paris, Limassol, and other global locations.

Workspace Context:

• Remote Work: Criteo provides the necessary tools and resources for employees to work remotely, including laptops, software, and collaboration platforms.
• On-Site Facilities: Criteo's offices are designed to foster collaboration, creativity, and work-life balance, with amenities such as game rooms, relaxation areas, and fully equipped kitchens.
• Cross-Functional Collaboration: Criteo encourages cross-functional collaboration, with dedicated spaces for team meetings, workshops, and brainstorming sessions.

Work Schedule: Full-time (40 hours per week), with flexibility for project deadlines and maintenance windows. Criteo offers a flexible work-life balance, allowing employees to manage their time effectively and maintain a healthy work-life balance.

📄 Application & Technical Interview Process

Interview Process:

1. Online Assessment: Complete an online assessment to evaluate your technical skills and problem-solving abilities.
2. Technical Phone Screen: Participate in a phone or video call to discuss your technical background, experience, and motivation for the role.
3. On-Site Interview: Visit Criteo's offices for a day of on-site interviews, including technical deep dives, architecture discussions, and cultural fit assessments.
4. Final Decision: Criteo will make a final decision based on your performance throughout the interview process and your fit with the team and company culture.

Portfolio Review Tips:

• Cloud Architecture Case Studies: Prepare detailed case studies demonstrating your experience designing, implementing, and managing secure, scalable, and efficient cloud infrastructure.
• Cloud Optimization Projects: Highlight projects where you optimized cloud usage, reducing costs and improving performance, with a focus on your decision-making process and the results achieved.
• Cloud Security Initiatives: Showcase your involvement in implementing or improving cloud security measures, ensuring compliance with relevant standards and best practices.
• Collaboration and Communication: Emphasize your ability to work effectively with various teams, including developers, product managers, and stakeholders, to deliver successful cloud projects.

Technical Challenge Preparation:

• Cloud Architecture Design: Brush up on your cloud architecture design skills, focusing on security, scalability, and efficiency. Familiarize yourself with best practices and relevant cloud provider services.
• Cost Optimization: Review cloud cost management strategies, tools, and best practices for optimizing cloud usage and reducing costs.
• Security Best Practices: Refresh your knowledge of cloud security best practices, including identity and access management, data encryption, and secure network configurations.
• Collaboration and Communication: Prepare for discussions on your experience working with various teams, including developers, product managers, and stakeholders, to deliver successful cloud projects.

ATS Keywords:

• Cloud Services: GCP, AWS, Azure, Cloud Architecture, Cloud Security, Cloud Cost Management, Cloud Optimization, Infrastructure as Code (IaC)
• Infrastructure: Network, Operating Systems, Server Management, Virtualization, Containerization, Orchestration
• Programming: Python, Go, Java, Shell Scripting, PowerShell
• Tools: Terraform, Ansible, Puppet, Chef, CloudFormation, Kubernetes, Docker
• Methodologies: Agile, Scrum, DevOps, ITIL, Lean Six Sigma
• Soft Skills: Collaboration, Communication, Problem-Solving, Decision-Making, Leadership, Mentoring
• Industry Terms: Cloud Engineer, Site Reliability Engineer, DevOps Engineer, Infrastructure Engineer, Cloud Architect

🛠 Technology Stack & Web Infrastructure

Cloud Providers: GCP, AWS (with a focus on the chosen provider for this role)

Infrastructure as Code (IaC) Tools: Terraform, Ansible, Puppet, Chef, CloudFormation

Containerization & Orchestration: Kubernetes, Docker

Monitoring & Logging: Prometheus, Grafana, ELK Stack, Cloud-native monitoring services (e.g., GCP Stackdriver, AWS CloudWatch)

Configuration Management: Ansible, Puppet, Chef

CI/CD Pipelines: Jenkins, GitLab CI/CD, CircleCI, GitHub Actions

👥 Team Culture & Values

Cloud Engineering Values:

• Security: Prioritize security in all aspects of cloud infrastructure design, implementation, and management.
• Scalability: Design and implement cloud infrastructure that can scale to meet the demands of Criteo's growing business.
• Efficiency: Optimize cloud usage, reducing costs and improving performance through continuous monitoring, analysis, and optimization.
• Reliability: Ensure high availability and fault tolerance in Criteo's cloud infrastructure, minimizing downtime and maximizing system performance.
• Collaboration: Work effectively with various teams, including developers, product managers, and stakeholders, to deliver successful cloud projects.

Collaboration Style:

• Cross-Functional Integration: Criteo encourages cross-functional collaboration between cloud engineers, developers, designers, and stakeholders to ensure alignment with business objectives and user needs.
• Code Review Culture: Foster a culture of code review, knowledge sharing, and continuous learning to improve the quality and maintainability of Criteo's cloud infrastructure.
• Mentoring and Knowledge Sharing: Encourage mentoring and knowledge sharing among cloud engineers to drive technical growth and expertise within the team.

📊 Challenges & Growth Opportunities

Technical Challenges:

• Cloud Architecture Complexity: Design and implement secure, scalable, and efficient cloud architecture for Criteo's growing business, considering factors such as data sovereignty, compliance, and regulatory requirements.
• Cost Optimization: Continuously monitor and optimize Criteo's cloud usage, reducing costs and improving performance without compromising security or reliability.
• Security Threats and Vulnerabilities: Stay up-to-date with the latest security threats and vulnerabilities, implementing proactive measures to protect Criteo's cloud infrastructure and data.
• Emerging Technologies: Evaluate and adopt emerging cloud technologies, services, and best practices to drive innovation and improve Criteo's cloud infrastructure.

Learning & Development Opportunities:

• Cloud Provider Certifications: Pursue relevant certifications from cloud providers such as GCP, AWS, or Azure to deepen your knowledge and demonstrate your expertise.
• Industry Conferences and Events: Attend cloud-focused conferences, webinars, and meetups to network with industry professionals, learn about emerging trends, and gain new insights.
• Technical Mentorship: Seek mentorship opportunities within Criteo or the broader cloud engineering community to develop your skills, gain new perspectives, and drive your career growth.

💡 Interview Preparation

Technical Questions:

• Cloud Architecture Design: Prepare for questions on cloud architecture design, focusing on security, scalability, and efficiency. Be ready to discuss your approach to designing, implementing, and managing secure, scalable, and efficient cloud infrastructure.
• Cloud Cost Optimization: Brush up on your knowledge of cloud cost management strategies, tools, and best practices. Prepare for questions on cost optimization techniques, cost analysis, and cost-saving measures.
• Cloud Security Best Practices: Review cloud security best practices, including identity and access management, data encryption, and secure network configurations. Prepare for questions on your approach to cloud security and your experience implementing or improving security measures.
• Collaboration and Communication: Prepare for questions on your experience working with various teams, including developers, product managers, and stakeholders, to deliver successful cloud projects. Be ready to discuss your approach to collaboration, communication, and problem-solving in a team environment.

Company & Culture Questions:

• Cloud Engineering at Criteo: Research Criteo's cloud engineering team, their projects, and their impact on the company's overall success. Prepare questions to ask about the team's dynamics, culture, and growth opportunities.
• Cloud Provider Comparisons: Familiarize yourself with Criteo's cloud provider strategy, including their choice of primary cloud provider (GCP or AWS) and their approach to multi-cloud or hybrid cloud environments. Prepare questions to ask about Criteo's provider comparisons and selection decisions.
• Cloud Engineering Culture: Investigate Criteo's cloud engineering culture, focusing on collaboration, knowledge sharing, and continuous learning. Prepare questions to ask about the team's approach to mentoring, training, and professional development.

Portfolio Presentation Strategy:

• Cloud Architecture Case Studies: Prepare detailed case studies demonstrating your experience designing, implementing, and managing secure, scalable, and efficient cloud infrastructure. Highlight your decision-making process, the results achieved, and any challenges overcome.
• Cloud Optimization Projects: Showcase projects where you optimized cloud usage, reducing costs and improving performance. Focus on your approach to cost analysis, cost optimization techniques, and the results achieved.
• Cloud Security Initiatives: Highlight your involvement in implementing or improving cloud security measures, ensuring compliance with relevant standards and best practices. Discuss your approach to security risk assessment, mitigation, and continuous improvement.
• Collaboration and Communication: Emphasize your ability to work effectively with various teams, including developers, product managers, and stakeholders, to deliver successful cloud projects. Prepare examples of your collaboration and communication skills, highlighting your approach to problem-solving, decision-making, and stakeholder management.

📌 Application Steps

To apply for this Senior Site Reliability Engineer - Cloud position at Criteo:

1. Update Your Resume: Tailor your resume to highlight your cloud engineering, infrastructure, and programming skills, as well as your experience with GCP or AWS. Include relevant keywords and emphasize your accomplishments in cloud architecture design, optimization, and security.
2. Prepare Your Portfolio: Curate a portfolio showcasing your cloud engineering projects, case studies, and technical documentation. Focus on your ability to design, implement, and manage secure, scalable, and efficient cloud infrastructure.
3. Research Criteo: Familiarize yourself with Criteo's business, products, and cloud engineering team. Understand their cloud provider strategy, cloud engineering culture, and growth opportunities.
4. Prepare for Technical Interviews: Brush up on your cloud architecture design, cost optimization, and security skills. Prepare for technical interviews, focusing on your approach to cloud engineering challenges, your experience working with various teams, and your ability to drive innovation and improvement.

📝 Enhancement Note: This enhanced job description provides a comprehensive overview of the Senior Site Reliability Engineer - Cloud role at Criteo. By understanding the role's requirements, responsibilities, and growth opportunities, you'll be better equipped to prepare a strong application and succeed in the interview process.