Site Reliability Engineer

il y a 1 mois


Nantes, France Horizon Trading Solutions Temps plein

Horizon Trading Solutions is an independent global technology company focused on electronic trading, supporting agency and principal business goals across equities and derivatives. For over 20 years we’ve equipped the most progressive global capital market players with powerful algorithmic technology and direct connectivity to exchanges and brokers worldwide. Our single multi-asset platform and our unfaltering commitment to client partnership allow us to promise Performance Simplified: making it easy to be the best in trading.


We offer to our clients an opportunity to enhance delivery capabilities whilst continuing to reduce the fixed cost base by outsourcing trading functions. Our key features are high performance hosting with the possibility of exchange colocation, hardware management: monitoring hardware and connections with the exchanges, application management (installation, configuration, and platform upgrades) and support to end users (24/5 support teams ensure that the platform is always ready when required).


We are currently seeking a talented SRE Engineer (W/M) to join our team and play a pivotal role in supporting the growth of our business dedicated to outsourcing trading infrastructure for EMEA Region :


  1. Platform Performance and Reliability:
  • Collaborate in the design and implementation of infrastructure to support our managed service offerings, including hosting, exchange connectivity, and market data.
  • Deploy infrastructure internally or with partners (on-premises, colocation, cloud) for critical applications requiring high performance and low latencies.
  • Ensure the robustness of the infrastructure through continuous monitoring, morning checks, and maintenance activities such as upgrades and patches.


  1. Operational Excellence:
  • Industrialize the management of infrastructure by automating routine tasks, improving efficiency and reliability.
  • Improve the security of our hosted platforms through the deployment of new security solutions.
  • Enforce adherence to change management processes, including CAB (Change Advisory Board) reviews, breakglass and 4-eyes checks.
  • Collaborate with cross-functional teams and vendors to ensure successful implementation of infrastructure initiatives.


  1. Team-base and Collaboration:
  • Promote and implement best practices in infrastructure management, fostering a culture of technological awareness and continuous improvement.
  • Participate in daily/weekly meetings with internal teams and external clients and vendors to provide updates and follow-up on ongoing projects and initiatives.


Skills and requirements we are looking for:

  • Bachelor's degree or higher in Computer Science, Information Technology, or related field. Advanced degree preferred.
  • 2-3 years of experience in a similar role.
  • Fluency in English is essential; proficiency in other languages is advantageous (French).
  • Technical skills:
  • Proficient in Linux system administration (Rocky Linux, Redhat) and scripting (bash, Python) with Git expertise (Gitlab CI-CD, …).
  • Experience with Ansible, Docker or similar automation tools.
  • Experience of PostgreSQL database administration.
  • Good networking skills, including VLANs, IP routing, and firewalling (e.g., Cisco, Juniper, …).
  • Familiarity with monitoring solutions like Nagios, or Datadog.
  • Background in Java application deployment or development.

It would be advantageous to have:

  • Familiarity with CI/CD processes (e.g., GitLab CI) and virtualization solutions (e.g., VMware).
  • Experience with public cloud services (Azure, AWS) and infrastructure-as-code (e.g., Terraform).
  • Basic understanding of ELK or Grafana, and Redhat Satellite.
  • Exposure to "follow the sun" operational models.
  • Knowledge of trading or financial applications.
  • Agile methodology and DevOps experience, including JIRA.
  • Understanding of SOC2 security standards.


If you're passionate about driving technological innovation and delivering exceptional solutions in the financial services industry, we invite you to join us and make a significant impact Apply now to join our dynamic team.

Horizon is an equal opportunity employer. We promote diversity, multiculturalism, and inclusion.



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