Senior Network Engineer

Company: TriMark
Location: Mansfield
Posted on: April 1, 2026

Job Description:

Why you’ll love it here! Benefits include Medical, Dental, Vision, Tuition Reimbursement, Pet, and Legal Insurance 401k Community Service Day Spotlight Awards National Sales Excellence Awards CFSP Prep Certification Program POSITION SUMMARY: The Senior Network Engineer reports to the Director, NetComm Operations Located in Mansfield, MA Full-Time Hybrid The Senior Network Engineer owns the architecture, strategy, design, security, and operational excellence of national enterprise networks spanning corporate offices, distribution centers, data centers, and cloud environments. This role serves as a senior technical leader responsible for ensuring secure, highly available, and scalable network services that support business-critical operations. This position carries significant influence over enterprise network standards and long-term architecture decisions. ESSENTIAL FUNCTIONS & RESPONSIBILITIES: Design, deploy, and support enterprise LAN/WAN/Wi-Fi infrastructure across geographically distributed locations serving corporate offices, distribution centers, and data center environments. Lead ongoing optimization and performance management of the Cato SD-WAN environment, including policy management, site onboarding, and security service configuration. Architect and maintain secure, scalable network solutions aligned with business needs and operational demands across a 2,800 endpoint environment. Strengthen network security posture in partnership with the Security team, with emphasis on network segmentation, Zero Trust principles, and hardening standards. Lead lifecycle management initiatives including hardware refreshes, firmware upgrades, and technology modernization roadmaps. Serve as the Tier 3 escalation resource and own root cause analysis and post-incident review for major network events. Drive improvements in network monitoring, alerting, and observability across the enterprise. Create and maintain detailed, accurate network documentation including topology diagrams, runbooks, and standard operating procedures. Participate in on-call rotation and is expected to support after-hours maintenance windows as needed. Given the national scope of the environment and the criticality of network availability to distributions operations, candidates should be comfortable with occasional evening and weekend commitments. COMPETENCIES: Expert-level proficiency in advanced network design principles, protocols, and technologies. Proven experience in configuring and optimizing intricate and advanced network devices. Exceptional project leadership skills, demonstrated through a history of successful execution of complex projects. In-depth knowledge of advanced network security principles and compliance standards. Outstanding troubleshooting and problem-solving abilities. Effective communication and collaboration skills at an advanced level. QUALIFICATIONS & EXPERIENCE: 7 years of enterprise network engineering experience in a distributed, multi-site environment. Direct, hands-on experience with Cato SD-WAN is a meaningful differentiator and candidates with production Cato deployment and management experience are strongly preferred. Strong Cisco/Meraki switching and routing experience with working knowledge of OSPF, BGP, VLANs, and QoS; Cisco Meraki certifications (ECMS1/ECMS2) preferred. Relevant industry certifications such as CCNP Enterprise, CCNP Security, or equivalent are preferred. Enterprise wireless design, deployment, and optimization experience, particularly in high-density environments. Proven ability to resolve high-impact incidents under pressure while communicating clearly with stakeholders at all levels. Experience with AWS cloud networking including virtual networking, VPN, Direct Connect, and security group management. Proficiency in Python scripting with applied experience in infrastructure as code practices — candidates who can automate configuration workflows, enforce network standards programmatically, and leverage tools such as Terraform or AWS CloudFormation to manage cloud network resources are strongly preferred. Prior experience functioning as a technical lead or subject matter expert within a network team. Strong documentation discipline, this role is expected to leave things better than they were found. Collaborative, ownership-driven mindset with the ability to operate effectively in a geographically distributed team environment. SHIndeed

Keywords: TriMark, Lawrence , Senior Network Engineer, IT / Software / Systems , Mansfield, Massachusetts