Sr Network Engineer

Role: Sr Network Engineer Location: Boston, MA or Cambridge, MA Experience: 8-12 years Applicants must be authorized to work in the US without sponsorship. Please note, this role is not able to offer visa transfer or sponsorship now or in the future. Responsibilities Design, implement, and maintain enterprise LAN/WAN, wireless, and data center network infrastructure, ensuring high availability and performance. Configure and troubleshoot routers, switches, firewalls, and load balancers (Cisco, Juniper, Palo Alto, or similar) across multiple sites. Monitor network performance and capacity, proactively identifying and resolving issues to minimize downtime and latency. Manage network security controls including firewalls, VPNs, ACLs, and intrusion detection/prevention systems in line with company security policies. Lead network upgrade, migration, and expansion projects, including planning, testing, and documentation. Collaborate with cross-functional IT teams (systems, security, and application teams) to support infrastructure and business initiatives. Provide onsite hands-on support for hardware installations, cabling, data center operations, and incident response. Mentor junior network engineers and maintain up-to-date network documentation, diagrams, and standard operating procedures. Salary and Other Compensation Applications will be accepted until 20 July,2026 The annual salary for this position is between $90,000- $105,000 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. Benefits 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 Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law. Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. #J-18808-Ljbffr Cognizant