Network Infrastructure Security Engineer - F5 Load Balancing and InfoBlox DDI Engineer Responsible for designing, implementing, and managing both F5 load balancing solutions for application delivery and Infoblox DDI (DNS, DHCP, IPAM) for network core services, ensuring network performance, availability, and security. Key responsibilities include incident response, performing vulnerability assessments, developing, and deploying new services, managing platform lifecycles, including hardware, software, and cloud environments. This includes configuring F5 load balancers (LTM, GTM) & Infoblox platforms, troubleshooting load balancing and DDI issues, implementing, and engineering new services, developing automation scripts, and collaborating with teams to integrate these systems securely. The Infrastructure Engineering team is responsible for leading the configuration, administration, troubleshooting and maintenance of technology solutions. The incumbent will design, build, enhance and integrate the infrastructure required to support various of high complexity throughout the Technology Department. The Principal Infrastructure Engineer mentors internal resources, interacts with external technical resources and contributes to Comerica's overall technology roadmap. This role will be responsible for designing and executing on endpoint solutions that provide an excellent user experience for all Comerica employees. Position Responsibilities:
Design and Methodology
- Utilize infrastructure engineering and research design methodologies appropriate to the development/test/production environment.
- Design and deploy new applications and enhancements to existing applications, software, and operating systems.
- Develop automated test solutions, Infrastructure as Code, and manage scripted code. Perform configuration and maintenance of applications and servers.
- Support enterprise application performance management, monitoring and logging solutions.
- Design and perform server and security audits, system backup procedures, and other recovery processes in accordance with the company's disaster recovery and business continuity strategies.
- Integrate servers, including database, e-mail, print, and backup servers and their associated software into enterprise systems.
- Ensure system connectivity of all servers, shared software, groupware, and other applications.
- Perform assigned in-depth tests, including end-user reviews, for modified and new systems.
- Test and deploy updates and upgrades to systems to remain in line with manufacturers and recommendations.
Technical Consulting
- Troubleshoot and resolve first and second level network and wireless issues.
- Present recommendations for engineering endpoint solutions and exercise independent judgment while developing understanding of the process, policies, and risk controls.
- Troubleshoot and support systems and applications across on-premises and cloud environments.
- Communicate with engineers, product team, and management to provide timely and accurate information and status updates.
- Provide orientation and training to end users for all modified and new systems.
Risk Management
- Proactively share information regarding risks and opportunities to build competitive advantages and create efficiencies.
- Monitor and test system performance; prepare system performance statistics and reports.
- Ensure all production services are replicated and maintained within a disaster recovery site and that the failover process is documented and tested.
- Ensure infrastructure security, perform regular checks, and establish disaster recovery solutions.
- Assist as needed during crisis and incidents and provide on-call support during non-business hours daily and/or as needed.
Administration/Support
- Collaborate with IT and Business teammates in an agile development environment.
- Create and maintain documentation as it relates to system configuration, mapping, processes, and service records.
- Other duties as assigned.
Position Qualifications:
- Bachelor's Degree from an accredited university in Computer Science, Engineering or in a Technology related field OR equivalent through a combination of education and/or technology experience OR 12 years of technology experience
- 5 years of experience in Infrastructure Engineering and Solutions
- 5 years of experience analyzing, troubleshooting, diagnosing, and determining root causes
- 4 years of experience with cloud technologies and solutions
- 4 years of experience with observability and proactive fault monitoring solutions
- 4 years of experience designing, architecting and managing scalable, resilient, and highly available infrastructure solutions
- 4 years of experience developing and maintaining infrastructure automation
- 4 years of experience that infrastructure adheres to best practices for security and compliance
Licenses/Certifications:
- AWS Certification preferred
- OpenStack Certification preferred
About Comerica
We know our employees are critical to our overall success and we are dedicated to investing in their future. One of the ways we do this is to offer a comprehensive Total Rewards package designed to recognize and reward individual performance, as well support health, well-being, development and security for our colleagues and their family. Total Rewards consists of cash compensation, development and flexible benefit programs designed to meet individual needs today and in the future. Your salary will be commensurate with your work experience and our programs are reviewed regularly to ensure each remain competitive. We are proud to offer benefits such as health and welfare programs, strong retirement benefits, and generous paid time off programs. You and your eligible family members, including domestic partners and their children, can participate in medical, dental, and vision benefits, 401(k) and pension, income protection benefits such as life insurance, AD&D, and supplemental health programs to offset unexpected health care expenses. We also have a variety of time off programs for things like vacation, sick time, disability, and parental leave. Eligibility for some programs varies based on employment status and tenure.
Upon offer, Comerica conducts a comprehensive background and fingerprint check. Your fingerprints will be used to check the criminal history records of the FBI and may be subscribed in the FBI's Record of Arrest and Prosecution Background ("RAP Back") service, which provides ongoing notification to the Company of any updates to your criminal history.
NMLS certification requirement: where applicable, a favorable background check screening, credit check, fingerprint check, and NMLS certification is required in accordance with the SAFE Act.
Comerica Incorporated (NYSE: CMA) is a financial services company headquartered in Dallas, Texas, and strategically aligned into three major business segments; the Commercial Bank, the Retail Bank, and Wealth Management. Comerica's colleagues focus on relationships, and helping people and businesses be successful. In addition to Texas, Comerica Bank locations can be found in Arizona, California, Florida and Michigan, with select businesses operating in several other states, as well as in Canada and Mexico.
Comerica is proud to be an Equal Opportunity Employer - disability/veteran.
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Comerica Bank
life insurance, parental leave, paid time off, sick time, 401(k)
Sep 24, 2025