Senior Principal Engineer, Information Systems

Job DescriptionJob Summary:Mercury Systems is a leading technology company serving the global aerospace and defense industry across more than 20 locations. We are seeking a highly experienced Senior Principal, Information Systems to provide advanced technical leadership and drive the execution of critical network and infrastructure initiatives across multiple Mercury sites.In this strategic individual‑contributor role, you will operate and serve as a recognized master in your discipline, establishing operational plans, guiding innovative engineering solutions, and shaping long‑term technology direction. You will influence enterprise‑wide technology standards, mentor engineers across locations, and deliver expert problem‑solving for difficult challenges requiring sound judgment and deep technical knowledge.This role offers the opportunity to directly influence Mercury’s secure, scalable, and high‑performance technology environment and contribute meaningfully to the evolution of IT policies, architectures, and practices.Provide senior‑level technical leadership and serve as a functional team lead for Information Systems Engineers across multiple sites, promoting technical consistency, knowledge sharing, and effective execution.Design, deploy, monitor, and manage vital enterprise infrastructure (e.g. LAN, WAN, Wireless, Voice, etc.) with an emphasis on reliability, scalability, and security.Establish operational plans and develop tactical engineering strategies that support major network modernization, expansion, and optimization initiatives.Research, evaluate, and recommend emerging technologies, architectures, and best practices that improve functional results and align with Mercury’s long‑term IT strategy.Lead complex incident response efforts, executing advanced diagnostics, root‑cause analysis, and resolution of hardware, software, and network‑related issues.Act as the primary technical lead on major enterprise network projects from planning through implementation, ensuring alignment with organizational goals and compliance requirements.Collaborate with cross‑functional leaders to shape IT policies, standards, and enterprise governance frameworks.Ability to present technical findings, architectural recommendations, and operational performance updates to senior leadership as needed.Maintain accurate documentation, reporting, and adherence to network security requirements and industry best practices.Required QualificationsBachelor’s degree in Information Systems, Computer Science, or related field.Typically requires 10+ years of related professional experience (aligned with Mercury IC5 Senior Principal level).Expert knowledge of data networking and integration principles, architectures, and operational best practices.Proven experience leading major network design, deployment, and modernization projects as a senior technical contributor.Strong understanding of network security concepts, controls, and compliance considerations.Experience working with domestic and international telecommunications vendors.Demonstrated ability to mentor, coach, and guide engineering teams in a multi‑site environment.Ability to independently evaluate emerging technologies and recommend scalable, secure solutions.Ability to diagnose and resolve advanced hardware/software issues independently or collaboratively.Experience with voice/video communication and room-based conferencing across 20 sites worldwide.Proven Experience managing and supporting the following technologies: Virtualization Technologies both on-prem and in the cloud.Identity Management – Entra (Azure Identity), AWS, MS AD Management, ADFS, RadiusDNS, PKI, and Certificate ManagementStorage, NAS, SAN – on-prem and cloud (Pure, Dell Power Store, NetApp, AWS, Azure,)Enterprise Voice – Teams Enterprise/Business Phone Systems, CrestronBackend Server Farm ManagementThis position requires you to have or obtain a government security clearance. Security clearances may only be granted to U.S. citizens.Preferred Qualifications:Cisco certifications (CCNA, CCNP, CCIE).Experience with Checkpoint firewalls, Juniper remote access solutions, NAC technologies, or ForeScout CounterAct.Experience with routers, switches, cabling, TCP/IP, MPLS, VoIP, and data‑center networking.Experience presenting technical strategies or operational updates to senior leadership.Experience providing technical mentorship or leading cross‑site engineering initiatives.Familiar with AI technologies and extending AI into infrastructure in secure environments.Job RequirementsWhy should you join Mercury Systems?Mercury Systems is a technology company that makes the world a safer, more secure place. We push processing power to the tactical edge, making the latest commercial technologies profoundly more accessible for today's most challenging aerospace and defense missions. From silicon to system scale, Mercury enables customers to accelerate innovation and turn data into decision superiority. Headquartered in Andover, Massachusetts, Mercury employs more than 2,300 people in 24 locations worldwide. To learn more, visit mrcy.comOur CultureWe are committed to making Mercury a great place to work, no matter where our employees are located. We offer a casual and enjoyable atmosphere that allows employees to learn and grow. We help and care for one another and work as one to achieve results for us and for our customers. We value communication and transparency, and strive to foster two-way dialogue at all levels of the organization. We are committed to lifelong learning, offering comprehensive skills training and tuition reimbursement. Whether you're just starting out on your career journey or you are an experienced professional, it's important to us that you feel recognized and rewarded for your contributions.To find out more about Why Mercury?, or visit the Mercury Community or find answers to general questions at Mercury FAQsMercury Systems is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex (including pregnancy), sexual orientation, gender identity, national origin, genetic information, creed, citizenship, disability, protected veteran or marital status.As an equal opportunity employer, Mercury Systems is committed to a diverse workforce. In order to ensure reasonable accommodation for individuals protected by Section 503 of the Rehabilitation Act of 1973, the Vietnam Veterans' Readjustment Act of 1974, and Title I of the Americans with Disabilities Act of 1990, applicants that require accommodation in the job application process may contact the number below for assistance.(978) 256-1300Click here read about our recent press release.Job DetailsJob Type: Full-timeCategory: Information TechnologySalaried: Salaried