SRE - Site Reliability Engineer

EuroPython; Paris; Hybrid; EUR 70,000 - 95,000; Full time

Job summary

Numberly is seeking a Site Reliability Engineer to design, operate, and improve the reliability of its infrastructure in order to better serve its clients.

You will work across on-premise data centers, leveraging Ansible, Terraform, and Kubernetes, ensuring robust availability, performance, and scalability of production services while collaborating with global teams.

Qualifications

• Master’s degree or equivalent in a technical field.
• 3–5 years of experience operating production systems.
• Strong troubleshooting and problem-solving skills.
• Excellent communication and ability to explain complex topics.
• Willingness to grow and help others grow, both technically and humanly.
• Strong understanding of Linux internals.
• Fluent in French and proficient in English.

Responsibilities

• Design, build, and operate high-availability, robust, and scalable system architectures.
• Ensure the availability, performance, and reliability of production services.
• Leverage open-source or internal tools and develop new solutions when needed.
• Collaborate with other teams to anticipate and resolve scaling challenges.
• Improve operations practices: automation, monitoring, observability, and incident management.

Skills

Troubleshooting

Communicator

Growth mindset

Linux internals

Education

Master’s degree (Bac +4/+5)

Tools

Ansible

Terraform

GitLab

Kubernetes

HAProxy

Envoy

Talos

Job description

Numberly is recognized as one of the world's leading data marketing specialists with nearly 500 employees and 11 offices worldwide serving more than 300 clients (L'Oréal, Campari, Colgate, Nestlé, HSBC...). By putting technology to work for brands and consumers, Numberly is at the heart of business growth and everyone's desire for more sustainable and relevant marketing. Numberly leverages the latest advances in data processing, analysis and activation, incorporating artificial intelligence technologies. This approach is part of a virtuous circle in which business competitiveness goes hand in hand with greater respect for privacy and data protection.

To achieve this, Numberly has always mastered, developed, and operated its own on-premise technical platforms thanks to the expertise of its in-house teams, without overlooking the Cloud when relevant. From development to datacenter hosting and network connectivity, everything is designed, built, maintained, and secured by our teams and we are proud of it.

Numberly is looking for a Site Reliability Engineer to design, operate, and improve the reliability of its infrastructure in order to always better serve its clients.

Responsibilities

• Design, build, and operate highly available, robust, and scalable system architectures.
• Ensure the availability, performance, and reliability of production services.
• Know how to leverage existing tools (open-source or internal) and develop new solutions when relevant.
• Collaborate with other technical teams to proactively anticipate and resolve scaling challenges.
• Participate in the continuous improvement of operations practices (automation, monitoring, observability, incident management).

Requirements

• Master’s degree (Bac +4/+5) from a university, engineering school, or equivalent.
• 3 to 5 years of experience in operating production systems.
• Strong troubleshooting and problem-solving skills.
• Good communicator, capable of popularizing their work, defending their ideas, and listening to others.
• Willingness to grow and help others grow, both technically (meetups, internal training) and humanly.
• Strong understanding of Linux internals.
• Fluent in French and proficient in English.

Technical Environment

• Physical infrastructure: 3 datacenters located in the Paris region
• Servers: +500
• Automation: Ansible, Terraform
• CI/CD: GitLab
• Containers: Kubernetes (on-premises Kubespray and Talos, AWS EKS, Azure AKS)
• Load-balancing: HAProxy, OpenResty (nginx), Envoy
• Languages: Python, Go, Rust
• Server OS: Ubuntu / Debian
• User OS: Windows / MacOS / Linux
• APIs: REST
• Databases: PostgreSQL, Hadoop, MSSQL, ScyllaDB, MongoDB

Security Tools & Frameworks - MDM: Intune, Iru (Kandji)

• Logs: Kafka, Graylog, Vector, CrowdSec
• IDS/IPS: Falco
• KMS/PKI: HashiCorp Vault

Additional information

• At Numberly, we share a passion for transmission: weekly internal talks, meetings with expert professionals in their field, continuous learning.
• Fast and powerful onboarding, in particular thanks to: the mentor assigned to each newcomer; to Live my life in different teams; Happy Meetings: monthly internal meetings to meet up with all our teams around the world and share group news.
• We cultivate freedom of speech which allows everyone to participate in the development of the group.
• We act positively on our ecosystem through 1000mercis impacts and via our activities which create value in the Open Internet and contribute to the enrichment of Open Source.
• Numberly is an actor of diversity with a gender equity score of 97/100.
• Numberly is ISO/IEC 27001:2023 certified; this certification recognizes compliance with the highest standards in information security.
• Numberly is an international environment with more than 30 nationalities in our teams.
• Offices in the image of each of the teams, a generous library, a large fully equipped music studio, two cats, vermicomposting, the possibility of bringing your pet and space for bicycles! In each kitchen: coffee, tea, unlimited infusions and also mystery lunches, Wellpass (ex-Gymlib) partnership, sports classes and parties (often in disguise).
• Possible mobility in our various offices abroad.
• Numberly welcomes people with disabilities.