About this role

Linux Engineer Cantor Fitzgerald Daily tasks: - Administer and maintain Linux servers (RHEL, CentOS, Rocky) across physical, virtual, and cloud environments - Monitor system health, performance, logs, and capacity to 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 (CIS benchmarks, SELinux, firewalls) - Collaborate with DevOps, Networking, Application, and Security teams on cross‑functional initiatives - Participate in on‑call rotation and respond to priority incidents as required - Create and update documentation, procedures, and operational runbooks - Support virtualization and containerization platforms (VMware, KVM, Docker) - Drive continuous improvement of systems through automation, process optimisation, and adoption of modern tools and AI where applicable Musts: Linux, Performance tuning, LDAP, DNS, Bash, Python, Prometheus, Grafana, Networking, TCP, Git, Cloud, AWS, Azure, GCP, AI, RHCSA, RHCE, IaC, Terraform, Ansible, Kubernetes, Storage, SAN, ITIL, High availability, Enterprise Architect Ideal Candidate Profile Skills: 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) a plus Interest in automation, AI tools, and improving operational efficiency through technology Qualifications: 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 Experience: 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 Work Arrangement Hybrid role based in Warsaw (3 days per week in the office) Open to remote B2B contracts for candidates outside Warsaw Permanent contract (UoP) preferred, with B2B option available Salary range: 20,000 PLN – 30,000 PLN (depending on experience and contract type) 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, we create a powerful ecosystem driving growth and stability across multiple asset classes. If you’re looking to join a firm that values resilience, innovation, and client focus, Cantor Fitzgerald offers an exceptional platform to make an impact in shaping the future of global financial markets. Role: Linux Engineer As a Linux Engineer, you will play a key role in supporting, optimizing, and securing Cantor Fitzgerald’s mission‑critical Linux infrastructure.

This position requires strong technical expertise, hands‑on experience with enterprise Linux environments, and the ability to work in a fast‑paced global organization. You will support day‑to‑day operations, contribute to engineering initiatives, and ensure the availability and performance of our systems across data centers, virtualized platforms, and hybrid cloud environments. As part of our ongoing evolution, we are actively leveraging Artificial Intelligence and modern tooling to automate, streamline, and improve the efficiency of our infrastructure and operational processes.

We continuously explore solutions (including Copilot and similar technologies) to reduce manual effort, enhance automation, and enable smarter system management. We are looking for engineers who are curious about AI, open to innovation, and motivated to improve how work gets done through technology.

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