Site Reliability Engineer (SRE) Sécurité

About Estreem

Estreem is the new benchmark for payment processing in Europe. Born from a strategic partnership between two major French banking groups, BNP Paribas and BPCE, Estreem is an autonomous fintech launched in February 2025. Its ambition: to become the leading sovereign payment processor in France, capable of operating across Europe. In a rapidly transforming payments sector, Estreem positions itself as a disruptive player, combining security, technological agility, and economic competitiveness. The objective is clear: to quickly integrate into the TOP 3 European processors. Equipped with a next-generation platform, Estreem covers the entire card processing value chain, from software editing to operational management, relying on a state-of-the-art infrastructure (cloud). It supports all major payment schemes (CB, Visa, Mastercard) as well as new European schemes, such as Wero. Designed from its inception to extend beyond French borders, Estreem aims to become a pillar of European strategic autonomy in the payments domain. The 3 'E's of Estreem summarize its DNA: Technological Excellence, Business Expertise, a strong European vision.

Where we are

Paris, Lyon, Toulouse

Your role and main missions

The role of Site Reliability Engineer (SRE) Security is central to ensuring the performance, reliability, and security of production environments. Working directly with business, security, resilience, and performance requirements, you will build and operate a highly available, scalable, automated infrastructure compliant with banking sector requirements.

Responsibilities

• Guarantee the reliability, performance, and scalability of systems, in line with SLO/SLA
• Automate deployment, supervision, and infra/app management via IaC
• Manage incidents: analyze root causes, implement corrective actions, anticipate and prevent incidents
• Define, develop, and implement security rules and solutions (IAM, ACL Management, Firewall, VPN, IPSEC, etc.)
• Formalize architectures, procedures, and contribute to Operational Readiness Reviews
• Collaborate with dev, prod, security, and architecture teams
• Develop observability dashboards (performance, security, availability)
• Ensure compliance with PCI-DSS, DORA, ISO 27001, IBM FS Cloud standards

Your profile

Education:

• Engineering degree or Master's in Computer Science.

Experience:

• Minimum 7 years of experience in systems, reliability engineering (SRE), or DevOps

Languages:

• Fluent French (C2), Fluent English (C2)

Key skills required:

• Languages: Terraform, Python, Bash, Helm, Ansible
• Containerization: Docker, Kubernetes, Openshift
• Security: cybersecurity best practices, mastery of OWASP-type standards and SAST/DAST testing, ACL management
• Cloud: cloud experience, ideally IBM Cloud (VPC, OpenShift, IAM, HPCS, Monitoring, Logs, Secret Manager.)
• Communication: clarity in writing and speaking, collaborative work
• Complex problems: analytical and resolution skills on distributed environments

Appreciated skills, or skills you can acquire by joining us:

• Associated technologies: PostgreSQL, Kafka, MongoDB, VSI RH Linux, Object Storage
• IBM Cloud SRE Certification

What we value

• A product/service-oriented mindset: sense of impact, concern for the end-user, maintainable and robust code over time.
• An ability to take a step back, challenge technical choices, and engage in a continuous improvement logic.

Job characteristics

Location:

• Paris

Start date:

• As soon as possible

Contract type:

• Permanent (CDI)

Remote work:

• 10 days per month (max 3 days/week)

Status:

• Executive (Cadre)

Due to the nature of the activity, interventions outside of usual hours may occasionally be necessary as part of an on-call system.

Compensation & Benefits

• Possibility of CET (Employee Savings Plan)
• SWILE Card (meal voucher)
• FMD (soft mobility package)
• PEE, PERCO, profit-sharing, matching contributions

We are committed to a quality approach and will receive each candidate with kindness and respect. For reminder, this position is open to people with disabilities. Finally, we attach particular importance to our future collaborators acting daily with ethical and professional responsibility. At any time during the recruitment process, the information on your CV, your identification data and your background may be verified.