Cyber Security Engineer

Location: Budapest, Hungary

Employment Type: Regular

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Join Citi's forward-thinking security organization as a Cyber Security Engineer, where you will have the opportunity to shape the future of the Cyber Security 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

Required skills for the position :

• 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.

Optional experience is a plus with:

• 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.

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.

What we can offer you:

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

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self every day.  We want the best talent around the world to be energized to join us, motivated to stay, and empowered to thrive. 

Sounds like Citi has everything you need?

Then apply to discover the true extent of your capabilities. 

#LI-AE1

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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This job opening is for an existing job vacancy.

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