About the Company:

As the founding entity of RAINBOW PARTNERS, Quanteam is a consulting firm specializing in Banking, Finance, and Financial Services. Guided by our core values of closeness, teamwork, diversity, and excellence, our team of 1,000 expert consultants, representing 35 different nationalities, collaborates across 10 international offices: Paris, Lyon, New York, Montreal, London, Brussels, Geneva, Lisbon, Porto and Casablanca.

We are currently looking for a Linux System Administrator to join one of our major clients, an international bank based in Montreal.

Job Overview:

The Linux Infrastructure Specialist will provide expert-level support for the enterprise's Linux environment across the Americas region. The role encompasses full-stack Linux administration, proactive system monitoring, troubleshooting, performance optimization, and cross-functional collaboration on infrastructure projects. The engineer will also contribute to security, reliability, and compliance initiatives across the High-Performance Computing (HPC) infrastructure.

Key Responsibilities:

Infrastructure Support & Operations:

• Deliver 1st, 2nd, and 3rd line support for RedHat, Ubuntu, and Debian servers.
• Ensure high availability and performance of production systems, including 24/7/365 support when required.
• Proactively monitor systems using enterprise-standard tools, collecting and analyzing performance data.

Architecture & Engineering:

• Participate in systems architecture design and deployment across production, DR, test, and development environments.
• Evaluate and integrate emerging Linux technologies aligned with strategic business goals.
• Build and maintain custom kernels and RPM packages as needed.

Collaboration & Documentation:

• Work closely with application development teams to gather requirements and design appropriate Linux-based solutions.
• Coordinate with IT production and infrastructure engineers to resolve complex cross-platform issues.
• • Maintain up-to-date documentation on system architecture, configurations, and policies.

Compliance & Governance:

• Identify infrastructure risks and contribute to mitigation planning.
• Ensure deployed systems meet business continuity and disaster recovery standards.
• Adhere to corporate IT standards and change management procedures.

Required Skills and Qualifications:

Technical Skills:

• 5-10 years of experience supporting Linux environments in financial services or equivalent industry.
• Strong expertise in RedHat Enterprise Linux (RHEL) 8.x and 9.x; solid experience with Ubuntu and Debian.
• Deep understanding of Linux kernel internals and performance optimization (low-latency tuning, kernel bypass, etc.).
• Familiarity with system monitoring tools such as Dynatrace, sar, iostat, vmstat.
• Scripting skills (Shell, Perl); automation experience using Ansible or Puppet.
• Strong grasp of networking fundamentals (TCP/IP) and troubleshooting tools (tcpdump, snoop).
• Knowledge of core Linux services (NIS, NFS, DNS, DHCP, Apache, LDAP, SSH, etc.).
• Experience with virtualization technologies and managing enterprise hardware (Dell, HP).
• Working knowledge of storage systems such as EMC SAN and NetApp appliances.

Additional Knowledge (Preferred):

• Familiarity with middleware (WebSphere MQ), relational databases (Sybase, Oracle), and market data tools (Reuters RMDS).

Soft Skills:

• Strong communication and organizational skills; ability to interact with stakeholders at all levels.
• Capable of managing multiple tasks and priorities in a dynamic trading environment.
• Fluent in English; French is a plus.
• Ability to work in a hybrid environment with 3 days on-site per week in Montreal.