Linux Engineer

Cantor Fitzgerald L.P., founded in 1945, is a premier global financial services and technology firm with a presence in over 30 countries and more than 14,000 employees worldwide. Renowned for innovation, scale, and deep expertise across capital markets, Cantor delivers cutting-edge solutions to institutional clients including banks, hedge funds, trading firms, and corporations. As one of the few remaining private partnerships on Wall Street, Cantor combines entrepreneurial agility with long-term vision—offering leadership in Equity and Debt Capital Markets, Sales & Trading, SPAC underwriting, Structured Products, Prime Brokerage, Asset Management, and Commercial Real Estate Services. Together with BGC Group, a leading global marketplace and technology provider, they create a powerful ecosystem driving growth and stability across multiple asset classes.

• Strong understanding of Linux internals, filesystems, kernel parameters, and performance tuning.
• Proficiency with common Linux services and tools (systemd, SSH, NFS, LDAP, DNS, cron).
• Strong scripting and automation capabilities (Bash, Python, Ansible).
• Experience with monitoring and logging platforms (Prometheus, Grafana, Splunk).
• Solid understanding of networking fundamentals (TCP/IP, routing, firewalling).
• Familiarity with Git and CI/CD workflows (preferred).
• Experience with cloud services (AWS, Azure, GCP) is a plus.
• 5+ years of professional experience as a Linux Administrator/Engineer in production environments.
• Professional certifications such as RHCSA, RHCE, or LPIC are strongly preferred.
• Knowledge of IaC tools (Terraform, Ansible) and container orchestration (Kubernetes, OpenShift).
• Understanding of storage technologies (SAN, NAS, iSCSI) and major filesystems (XFS, EXT4, ZFS).
• Familiarity with ITIL-based service management processes.
• Proven experience maintaining large-scale Linux environments in high-availability, performance-critical settings.
• Exposure to multi-team, multi-vendor infrastructure environments.
• Prior experience supporting hybrid or distributed enterprise architectures.

• Administer and maintain Linux servers (RHEL, CentOS, Rocky) in physical, virtual, and cloud environments.
• Monitor system health, performance, logs, and capacity.
• Proactively identify and resolve issues.
• Manage configuration, patching, and system updates to ensure stability, security, and compliance.
• Develop and maintain automation scripts and tools (Bash, Python, Ansible).
• Implement and support backup, restore, and disaster recovery procedures.
• Maintain system security and apply hardening best practices.
• Collaborate with DevOps, Networking, Application, and Security teams on cross-functional initiatives.
• Create and update documentation, procedures, and operational runbooks.
• Support virtualization and containerization platforms (VMware, KVM, Docker).

This is a hybrid role based in Warsaw, with three days per week in the office. For candidates located outside Warsaw, remote contract arrangements are possible. The role is offered primarily as a permanent contract (Umowa o Pracę – UoP). B2B contracts are also available.