Sr. Network Engineer

We are seeking a highly skilled Network Engineer to serve as a technical contributor and subject matter expert for enterprise application delivery and security platforms. This role focuses on the engineering, operation, and security of load balancers, web application firewalls (WAF), and edge/CDN technologies across on-premises and cloud environments.

The ideal candidate will combine deep hands-on technical expertise with strong troubleshooting, collaboration, and communication skills to ensure high availability, performance, and security of mission-critical applications.

In this role, you will

• Serve as a technical subject matter expert for application delivery and security platforms, including load balancers, WAF, and CDN technologies.
• Perform hands-on engineering, configuration, maintenance, and optimization of application delivery and security solutions across on-prem and cloud environments.
• Collaborate with network, security, cloud, and application teams to ensure alignment, continuity, and effective cross-team communication.
• Participate in capacity planning, forecasting, and architectural decisions to support scalable and resilient application delivery.
• Troubleshoot and resolve complex network and application issues across OSI layers 1-7, providing clear and timely status updates to stakeholders.
• Apply risk-based decision-making to protect proprietary, personal, and privileged data, ensuring strong application and network security controls.
• Implement and maintain network and application security best practices, including WAF/load balancer configurations, change controls, monitoring, and documentation.
• Support security audits and compliance activities by providing technical input, evidence, documentation, and remediation support.
• Participate in a rotational on-call schedule, responding to high-priority incidents within defined SLAs and supporting off-hours change windows as required.

• Undergraduate degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent practical experience.
• 3+ years of experience troubleshooting and maintaining application delivery controllers such as:
• F5 (LTM, GTM/DNS, ASM/AWAF, SSLO)
• A10, AVI, Citrix, or similar load balancer and WAF platforms
• 2+ years of experience supporting cloud-native applications in AWS, Azure, or Google Cloud Platform (GCP).
• Experience securing applications using CDN and edge security platforms., * SSL/TLS encryption, certificates, and key management
• DNS, TCP/IP, switching, and routing concepts
• Application security principles and controls
• Solid knowledge of OWASP Top 10 threats and mitigation techniques.
• Working knowledge of scripting or automation techniques to support operational efficiency.

Preferred skills: what will help you stand out

• Hands-on experience with:
• F5 LTM, GTM (DNS), ASM/AWAF, SSLO
• A10 and AVI load balancers
• Shape Bot Protection
• Cloud providers' native networking and security consoles (AWS, Azure, GCP)
• CDN and edge platforms such as Cloudflare, Akamai, and F5 Distributed Cloud (XC)
• Strong analytical and troubleshooting abilities with a security-first mindset.
• Excellent written and verbal communication skills, with the ability to explain complex technical topics clearly.

• On-call rotation approximately one week every four weeks.
• Occasional after-hours, night, or weekend work during scheduled maintenance or emergency situations.

Salary and Other Compensation:

The annual salary for this position is between $75,000 to $90,000 depending on experience and other qualifications of the successful candidate.

This position is also eligible for Cognizant's discretionary annual incentive program, based on performance and subject to the terms of Cognizant's applicable plans.

At Cognizant, we're eager to meet people who believe in our mission and can make an impact in various ways. We strongly encourage you to apply even if you only meet the required skills listed. Consider what transferrable experience and skills make you a unique applicant and help us see how you'd be beneficial to this role.

Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

• Medical/Dental/Vision/Life Insurance
• Paid holidays plus Paid Time Off
• 401(k) plan and contributions
• Long-term/Short-term Disability
• Paid Parental Leave
• Employee Stock Purchase Plan

At Cognizant, we're eager to meet people who believe in our mission and can make an impact in various ways. We strongly encourage you to apply even if you only meet the required skills listed. Consider what transferrable experience and skills make you a unique applicant and help us see how you'd be beneficial to this role.

Please note, this role is not able to offer visa transfer or sponsorship now or in the future

Work model:

At Cognizant, we strive to provide flexibility wherever possible, and we are here to support a healthy work-life balance though our various wellbeing programs. Based on this role's business requirements, this is a remote position in USA.

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you're engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.