Cyber Security Engineer

Join Citi's forward-thinking security organization as a Cyber Security Engineer, where you will have the opportunity to shape the future of the Cybersecurity in Citi. With a focus on cutting-edge technologies and industry best practices, you will design and implement robust security solutions that safeguard the organization against evolving cyber risks.

As a Cyber Security Engineer, you will

Must have skills for the role:

• Engineer and optimize enterprise firewall platforms such as Palo Alto PAN-OS, Check Point Gaia and troubleshoot performance and reliability issues on high-load proxy, firewall, and network-security components.
• Collaborate with SOC teams to improve detection coverage, reduce false positives, and validate telemetry and support vulnerability management processes.
• Build and tune monitoring dashboards using Prometheus, Grafana, Zabbix.
• Perform L3-level Engineering activities across Linux, DNS, networking, routing, authentication, and security layers.
• Produce clear operational and security documentation for global engineering and audit requirements.

Optional experience is a plus with:

• Harden Linux systems following CIS and internal security baselines.
• Manage and configure forward and reverse proxies: Blue Coat, Zscaler ZIA/ZPA, HAProxy, NGINX, Squid, Apache. implement and tune WAF and L7 security controls (F5 ASM, HAProxy, Cloudflare WAF). administrate load balancers such as F5 BIG-IP, Citrix ADC, or HAProxy enterprise variants. Maintain, build, design virtualization technologies including VMware ESXi and Containerization & Orchestration: Deploy, manage, and secure containerized applications, with practical experience in container orchestration platforms such as OpenShift.
• Build automation with Ansible, Terraform, Python, Bash, and Git, applying IaC standards.
• Integrate, maintain, and monitor SIEM pipelines for Splunk, CRIBL, XSOAR Stack and Manage log enrichment, parsing, and transport via syslog or derivatives.

Ideal background

• The ideal candidate will have a deep understanding of Check Point/Palo Alto/Fortinet and opensource firewall technologies and will be responsible for designing, implementing, and maintaining firewalls and related security solutions in scale.
• 5+ years in cybersecurity or network security engineering and implementation, hands-on experience with automation tools Ansible, Bash and Python scripting.
• Familiar how to work with large scale enterprise networks and procedures during research/design and implementation phases.
• Excellent communication and interpersonal skills, with the ability to work effectively with cross-functional teams and stakeholders at all levels of the organization.
• Strong hands-on experience with firewall deployment, configuration, and troubleshooting
• Understanding of basic protocols like DNS/HTTP/IPsec, and SSL/TLS while working with firewalls, IDS/IPS, VPNs, Forward, reverse-proxy or WAF solutions.
• Linux administration expertise – build, maintain, configure base OS or docker systems individually or through automation, cloud security (AWS, Azure, or GCP) is a plus.

Beneficial Skills & Qualifications

• Familiarity with design metrics, analytics tools, and benchmarking methodologies used to evaluate infrastructure performance and identify improvement opportunities.
• Experience operating in a matrix organisation, coordinating across virtual and geographically distributed teams.
• A track record of leading operational process improvements that have delivered measurable outcomes in a complex technology environment.

What We Offer

At Citi, you will be part of a high-performing global engineering team where your work has real impact across the firm's technology infrastructure. We offer a collaborative, performance-driven environment that supports your professional growth, rewards ownership, and connects you to some of the most complex infrastructure challenges in financial services.

By joining Citi Hungary, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive compensation package and enjoy a whole host of additional benefits that support you (and your family) to be well, live well and save well:

• Cafeteria Program
• Home Office Allowance (for colleagues working in hybrid work models)
• Paid Parental Leave Program (maternity and paternity leave)
• Private Medical Care Program and onsite medical rooms at our offices
• Pension Plan Contribution to voluntary pension fund
• Group Life Insurance
• Employee Assistance Program
• Access to a wide variety of learning and development programs, online course libraries and upskilling platforms, such as Udemy and Degreed
• Flexible work arrangements to support you in managing work - life balance
• Career progression opportunities across geographies and business lines
• Socially active employee communities with diverse networking opportunities

Apply today and bring your infrastructure engineering expertise to a global team where your designs shape the reliability and performance of Citi's technology at scale.

#LI-AE1

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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