Estreem : the new reference for payment processing in Europe

Born from a strategic partnership between two major French banking groups, BNP Paribas and BPCE, Estreem is an independent fintech launched in February 2025. Its ambition: to become the first sovereign payment processor in France, capable of operating at European scale.

In a payments sector undergoing profound transformation, Estreem positions itself as a disruptive player, combining security, technological agility and economic competitiveness. The objective is clear: to rapidly join the TOP 3 European processors.

Equipped with a next-generation platform, Estreem covers the entire card processing value chain, from software publishing to operational management, relying on state-of-the-art (cloud) infrastructure. It supports all major payment schemes (CB, Visa, Mastercard) as well as new European schemes, such as Wero.

Designed from its creation to shine beyond French borders, Estreem aims to become a pillar of European strategic autonomy in the payments field.

The 3 "E"s of Estreem sum up its DNA: Excellence in technology, Expertise in the business, and a strong European vision.

📍Where we are: Paris, Lyon, Toulouse

More information about Estreem and our projects is available on our website: Estreem | European Payment Processing for Banks

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📋 Your role and main responsibilities

The role of Senior Site Reliability Engineer (SRE) is strategic in ensuring the performance, reliability and security of production environments supporting a critical payment platform operating at European scale.

Working closely with development, architecture, production and cybersecurity teams, you help define the platform's reliability standards and support teams in adopting SRE practices.

Your responsibilities:

• Ensure the availability, performance and resilience of online systems in line with SLOs/SLAs.

• Define and manage reliability indicators (SLIs, SLOs, Error Budgets).

• Design and evolve observability, monitoring and alerting solutions.

• Automate deployments, operations and administration of infrastructure via Infrastructure as Code.

• Lead critical incidents, conduct root cause analyses (RCA) and post-mortems.

• Develop and maintain security controls (IAM, ACL, Firewall, VPN, IPSEC, secrets management).

• Formalise architectures and contribute to operability and resilience reviews.

• Support development teams in improving the operational quality of applications.

• Ensure compliance with the PCI-DSS, DORA, ISO 27001 and IBM FS Cloud frameworks.

• Contribute to the skills development of SRE engineers and the dissemination of best practices.

Your profile

• Engineering degree or Master's in computer science.

• 8 years of experience minimum in SRE, DevOps, Cloud Engineering, Infrastructure Engineering or Production Engineering.

• Significant experience on critical platforms with high availability and security requirements.

• Strong command of reliability, observability, automation and incident management issues.

• Recognised technical leadership and ability to work in complex environments.

• Fluent French (C2), fluent English (C1/C2).

• Experience in the payment, finance or regulated environments sectors is a plus.

Key skills required

• Languages: Terraform, Python, Bash, Helm, Ansible

• Containerisation: Docker, Kubernetes, Openshift

• Security: cybersecurity best practices, command of frameworks such as OWASP and SAST/DAST testing, ACL management

• Cloud: cloud experience, ideally IBM Cloud (VPC, OpenShift, IAM, HPCS, Monitoring, Logs, Secret Manager...)

• Communication: clarity in writing as well as orally, collaborative working

• Complex problems: analytical and problem-solving ability in distributed environments

Use of Artificial Intelligence recommended

• Use of generative AI tools in a professional context.

• Experience with Claude or equivalent tool.

• Interest in using specialised agents and AI applied to SRE, DevOps and Infrastructure as Code activities.

• Ability to leverage AI to accelerate the development, standardisation and operation of platforms.

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

• Related technologies: PostgreSQL, Kafka, MongoDB, VSI RH Linux, Object Storage

• Certification in IBM Cloud SRE

💡 What we value

A product/service-oriented mindset: a sense of impact, concern for the end user, maintainable and robust code over time.
An ability to step back, challenge technical choices and drive structuring decisions around the reliability, security and resilience of platforms.

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Job characteristics

• Location: Paris or Lyon

• Start date: As soon as possible

• Contract type: permanent contract (CDI)

• Remote working: 10 days per month (max 3 days/week)

• Management-level status (Cadre)

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

Remuneration & Benefits

• Possibility of CET (time savings account)

• SWILE card (meal vouchers)

• FMD (soft mobility allowance)

• Employee savings schemes PEE, PERCO, profit-sharing, employer matching contributions

We operate under a quality approach and will welcome every candidate with kindness and respect. As a reminder, this position is open to people with disabilities.

Finally, we place particular importance on our future employees acting with ethical and professional responsibility on a daily basis. At any time during the recruitment process, the information on your CV, your identification details and your background may be verified.