Job Summary
We are seeking a highly skilled and motivated DNS (DDI) & Load Balancing Network SME to join our global network operations team. This role requires a deep understanding of enterprise network platforms, routing, and switching technologies, with a primary focus on DDI (DNS, DHCP, IP Address Management) and Load Balancing technologies.

This role focuses on ensuring the reliability, scalability, and efficiency of DNS, DHCP, IP Address Management (DDI), and Load Balancing services. The ideal candidate will have a strong Site Reliability Engineering (SRE) mindset, with a focus on automating and modernizing workflows, driving operational excellence, and collaborating with engineering teams to enforce standards and supportability for Day 2 operations.

The SME will act as a bridge between Network Operations and Engineering, ensuring accountability, supportability, and alignment with technology roadmaps. This role also involves triaging complex incidents, performing root cause analysis, and driving Day 2 risk remediation efforts.

Key Responsibilities

• Provide subject matter expertise for DNS, DHCP, IP Address Management (DDI), and Load Balancing services.

• Act as the primary escalation point for complex incidents, Emergency Break-fix, Incident resolutions and drive triage and root cause analysis for critical issues, implementing preventive measures to avoid recurrence.

• Ensure operational stability by identifying and remediating Day 2 risks in DNS, DDI, and Load Balancing domains.

• Leverage SRE practices to automate and modernize workflows, reducing manual tasks and improving operational efficiency.

• Develop and implement scripts and tools to streamline triage, monitoring, and incident resolution processes.

•  Partner with engineering teams to align on existing and new technology roadmaps, provide feedback on design and deployment for seamless handoffs.

• Act as a checkpoint, enforcing operational standards, accountability, and supportability for Day 2 operations.

• Ensure adherence to operational standards and best practices for DNS, DDI, and Load Balancing services.

• Act as a checkpoint for enforcing supportable standards during new technology deployments.

• Collaborate with cross-functional teams to address vulnerabilities and improve service reliability.

• Provide technical training and mentorship to network operations staff globally.

• Ensure actionable insights are available to support Day 2 operations and proactive issue resolution.

Required Qualifications

• Strong knowledge of DNS, DHCP, and IP Address Management protocols.

• Hands-on experience with DDI tools such as TCPWave, BlueCat, or Infoblox.

• Hands-on experience with Load Balancers SLB / GTMs (F5, Citrix Netscaler) in enterprise environments.

• Familiarity with network protocols and services (e.g., TCP/IP, HTTP, SSL/TLS).

• Solid understanding of enterprise network platforms, including Cisco and Arista routing and switching technologies.

• Familiarity with firewall platforms and their integration with network operations.

• Working knowledge of packet capture and analysis tools (e.g., Wireshark, Riverbed) for troubleshooting and diagnostics.

• Experience in automating workflows and modernizing operational processes.

• Proven ability to lead triages and resolve complex incidents in DNS, DDI, and Load Balancing domains.

• Ability to work collaboratively with engineering teams to align on technology roadmaps and enforce operational standards.

• Excellent communication skills to act as a bridge between Network Operations and Engineering.

• Provide operational support for enterprise network platforms, including Cisco and Arista routing and switching technologies.

• Familiarity in scripting languages such as Python, Bash, PowerShell & automation tools like Ansible, Terraform is a plus.

• Experience working in financial or banking domains is a plus.

• Familiarity with regulatory and compliance requirements in enterprise environments.

Preferred Qualifications

• Experience with cloud-based DNS and Load Balancing solutions (e.g., AWS Route 53, Azure DNS, Cloudflare, or Akamai).

• Knowledge of containerized environments and orchestration tools (e.g., Kubernetes, Docker).

• Certifications such as F5 Certified Technology Specialist (CTS), Infoblox DDI Certification, or CCNP are a plus.

• Knowledge of ITIL processes and practices for network operations.

• Proactive and self-motivated with a strong focus on operational excellence.

• Passion for automation and continuous improvement.

• Ability to mentor and upskill team members, fostering a culture of learning and collaboration.

• Education & Experience:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.

• 7+ years of experience in network operations, with a focus on DDI and Load Balancing technologies.

This role offers the opportunity to work in a dynamic, global environment, driving innovation and operational excellence in critical network domains. If you are passionate about DNS, DDI, Load Balancing technologies, and modernizing network operations, we encourage you to apply!

------------------------------------------------------

Job Family Group:

Technology

------------------------------------------------------

Job Family:

Systems & Engineering

------------------------------------------------------

Time Type:

Full time

------------------------------------------------------

Primary Location:

Tampa Florida United States

------------------------------------------------------

Primary Location Full Time Salary Range:

$113,840.00 - $170,760.00

In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

------------------------------------------------------

Most Relevant Skills

Please see the requirements listed above.

------------------------------------------------------

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

------------------------------------------------------

Anticipated Posting Close Date:

Dec 19, 2025

------------------------------------------------------

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.

 

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.