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Thales

Global defense and aerospace electronics

Lead Site Reliability Engineer Network

Network Engineering & AdministrationConfirmed live in the last 24 hours
Full-timeParis, FranceNo salary listedHybrid

About the Job

Requirements

  • Expertise in networking, including VXLAN, BGP, dynamic routing, SRv6, IPv6, and cloud interconnections such as Interconnect or peering.
  • Proficiency with proxy architectures such as HAProxy and NGINX and perimeter security services.
  • Proficiency with monitoring tools such as Prometheus and Grafana, Golden Signals, and reliability indicators including SRE and SLOs.
  • Experience with automated deployments using Terraform, Ansible, Python, CI/CD pipelines, and the Nix ecosystem.
  • Strong security skills, including next-generation firewalling and ISE, and familiarity with SecNumCloud compliance requirements.
  • Leadership skills to unite a team around a demanding technology vision while supporting employees in doing their work effectively.
  • Ability to manage crisis situations or major incidents in a critical production environment.

Responsibilities

  • Manage and develop a team of 10 engineers, fostering collaboration and technical excellence.
  • Facilitate Agile ceremonies and prioritize work between build projects and operational stability.
  • Define, monitor, and report SLIs, SLOs, and SLAs; conduct periodic reviews to ensure the network meets service commitments.
  • Lead team growth strategy, coach employees, develop training plans, conduct annual reviews, define career paths, and supervise 24/7 on-call coverage.
  • Monitor and optimize network infrastructure OPEX and CAPEX, and oversee tenders and orders.
  • Coordinate with Google Cloud network teams and align S3NS security and operational needs with the partner.
  • Collaborate with Google engineering teams to understand and operate complex network layers, including VPC, Cloud Interconnect, Andromeda, and Cloud Armor.
  • Ensure the robustness of physical network and routing infrastructure, including data-center networks, VXLAN/EVPN, high-performance BGP, advanced segmentation, IPv6, and WAN technologies such as SRv6.
  • Oversee firewall, forward and reverse proxy, WAF, load-balancing, and SSL-inspection architectures to control incoming and outgoing traffic.
  • Lead an Everything as Code approach for reproducible and auditable deployments.
  • Use Terraform to provision cloud and on-premises infrastructure.
  • Use Ansible for configuration management and orchestration of network equipment.
  • Develop internal tools and APIs and automate complex workflows using Python.
  • Use Nix to support reproducible build environments and declarative package management for SecNumCloud compliance.
  • Design comprehensive monitoring and intelligent proactive alerting using tools such as Prometheus and Grafana.
  • Manage service reliability using SLAs, error budgets, and SLOs.
  • Design and regularly test disaster recovery plans, ensuring the network supports transparent failover or rapid reconstruction after major failures.
  • Initiate resilience tests to validate configurations against equipment or connectivity failures.

About the Company

Thales

Global defense and aerospace electronics

Thales designs and delivers critical technology for aerospace, defense, and digital security. Its products include electronics, software, and data-security systems that power air travel, payments, and modern military platforms, by integrating hardware and software to build systems such as avionics, radar, cybersecurity, and secure communications that collect sensor data and protect networks. It stands out through deep industrial experience, end-to-end solutions across defense, aerospace, and cybersecurity, and a focus on AI and quantum tech, aided by strategic acquisitions and partial state ownership. Its goal is to provide reliable, secure, and connected technologies that support national security, public safety, and everyday life by solving complex security and connectivity challenges.

Company size
10,001+
Company stage
IPO
Headquarters
Meudon, France
Founded
1893

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