Network Engineer - Infrastructure Oversight

Network Engineer - Infrastructure Change Oversight Job Req :

Warsaw, Mazovia, Poland

Hybrid

May. 08, 2026

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Our mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We strive to earn and maintain our clients’ and the public’s trust by constantly adhering to the highest ethical standards and making a positive impact on the communities we serve.

The USCC & Wealth Infrastructure Change Management team reviews all infrastructure changes submitted by our Foundational Services partners. This position requires the ability to understand the potential impact of documented changes on the overall availability of the network with a focus on ensuring safe change execution. Additionally, the position will monitor high‑risk network change activities during execution and facilitate immediate notification for any unplanned impacts.

This role will also partner with the Foundational Services teams to facilitate large‑scale project initiatives and assist with planning and execution.

• Evaluate network changes to identify conflicts with other planned infrastructure or application changes. When applicable, propose modifications to timing or other details in the change record to mitigate risk and ensure the change is successful. Document decisions regarding network changes within change tracker.
• Ensure required controls and processes are in place to maintain business continuity during network changes.
• Work with both infrastructure and application teams to develop an agreed‑upon execution plan for higher‑risk changes.
• Participate in change monitoring and oversight during weekend implementation green zones.
• Collaborate with Network teams on large‑scale network initiatives (EOVS refresh, platform upgrades, and new build‑outs).
• Track and perform root‑cause analysis of application impacts caused by network changes. Participate in Problem Management reviews of network change‑caused major incidents.
• Review network change failure root‑causes and collaborate with the Foundational Services teams to make process improvements.
• Participate in discussions regarding the Service Now SaaS Risk Calculator and make recommendations for improvements.

• 5-7 years of experience in a Network Engineering or Network Operations role.
• Understanding of network services used by large financial organizations.
• Proven track record of operational process improvements.
• Ability to work independently, multi‑task, and take ownership.
• Ability to work in a matrix environment and partner with other technology teams.
• Ability to work under pressure and manage to tight deadlines.
• Able to effectively communicate with both management and technical personnel regarding network technology changes, and risks surrounding planned activities.

• Familiarity with network vendor equipment configuration and operation (Cisco, Nexus, Arista, Juniper, F5, Citrix, Checkpoint, Palo Alto)
• Knowledge of enterprise TCP/IP communications (IPv4, QoS, IPSEC, VPN, etc.)
• Understanding of network protocols: OSPF, EIGRP, BGP, DHCP, DNS, FTP, TFTP
• Familiarity with various distributed platform architectures (IaaS, PaaS, SaaS)
• Knowledge of emerging container platforms (ECS/Andromeda/Bare Metal/Public Cloud)

• Bachelor’s degree/University degree or equivalent experience

• Employer paid Defined Contribution Pension Plan contribution of 6% of employee’s pensionable earnings (PPE Program)
• Employer paid Private Medical Care Package for employees and Private Medical Care Packages for certain family members available at preferential rates
• Employer paid Life Insurance Program for employees and Life Insurance for certain family members available at preferential rates
• Employee Assistance Program financed by Employer
• Paid Parental Leave Program (maternity and paternity leave; statutory and 2 weeks additional paid paternity leave)
• Sport Card for employees subsidised via Social Benefits Fund…