Senior Network Security Engineer

At STN, we don't just adapt to the digital future, we engineer it. Our mission is to help organizations thrive in a rapidly evolving technology landscape through strategic insight, cutting-edge solutions, and a security-first mindset. We provide end-to-end services spanning cloud consulting, AI infrastructure, and enterprise security, enabling secure, scalable, and future-ready transformation.

As trusted advisors, we align IT investments with business outcomes that drive performance and growth, starting with deep strategic engagement and delivering tailored solutions built for long-term impact.

Our approach is innovation-led and rooted in cybersecurity, with a focus on leveraging the right technologies to solve real-world challenges. We invest in our people and foster a culture of growth, inclusion, and purpose because we believe empowered teams build transformative technology.

Overview
The primary role of the Senior Network Security Engineer is to provide support for Managed Services Clients. The engineer will also be responsible for producing and implementing technological designs. Solutions built in this role may encompass multiple technology disciplines and tools. A candidate in this role will be able to quickly identify and solve issues quickly while providing excellent customer service. Candidates for this position are expected to have Senior level experience with IP networking and high understanding of the network’s responsibility in delivering excellent application experience.

Key Responsibilities

Implementation of Customer Designs and Network Security Support (85%)

• Designs statements of work and derives a Method of Procedure to document the implementation of said design.
• Design and recommend infrastructure improvements for network systems.
• Own all network hardware and software components.
• Configure routers, switches, firewalls, and network appliances.
• Manage remote access solutions.
• Oversee data center racks, AC power, and cabling.
• Automate network processes and document procedures.
• Perform network design, capacity planning, and performance monitoring.
• Lead network improvements, upgrades, and repairs.
• Manage vendor relationships and service level agreements.
• Ensure network connectivity for all systems and external partners.
• Practice network asset management and maintain inventory documentation.
• Manage security appliance policies (firewalls, gateways, sensors).
• Implement and maintain network security processes and reporting.
• Support and enhance security solutions (firewall, anti-virus, IDS/IPS, gateway filtering, MFA, web security).
• Participate in vulnerability assessments, penetration tests, and security audits.
• Maintain awareness of new security solutions, threats, and best practices.
• Assist in the development and maintenance of security policies, standards, and procedures.
• Collaborate with Lead security analysts and compliance teams on incident investigations and audits.
• Works within the team to support manage services contracts, delegating as appropriate to other team members.

Administration (5%)

• Accurately fills out time tracking for billing purposes.
• Maintains documentation for processes and procedures, noting adjustments and changes along the way.
• Maintains due dates of tickets assigned in the portal.
• Other duties as assigned.

Learning and Development (10%-20%)

Research, document, and maintain current knowledge for:

• Annual or longer-term individualized training programs including position specific workshops, seminars, and certification.
• Regular review of individual progress plan with supervisor.

Experience & Qualifications

Required

Qualified candidates will have the following:

• At least six years of experience in troubleshooting and resolving advanced production networking issues.
• At least a four-year degree in a technology discipline (BA or BS) or equivalent work experience in the technology field.
• Experience with Firewalls, Routers, Switches, DDI, NAC with a keen understanding of the roles that each device interacts with application layers
• Expert understanding of Layer 3 networking.
• Experience with any/all of Cisco, Cisco Meraki, Palo Alto Networks, Fortinet, Arista, Juniper and other market leading networking and firewall vendors.
• Intuition and keen instincts regarding customer service.
• Excellent written communication skills.
• Excellent listening skills.
• Strong interpersonal and oral communication skills; with a focus on communicating to technical and non-technical users alike.
• Excellent analytical and problem-solving skills.
• Ability to effectively prioritize and execute tasks in a fast-paced environment.
• Ability to conduct research into systems issues as required.
• Highly self-motivated and directed.
• Excellent and keen attention to detail.
• Skilled at working within a team-oriented, collaborative environment.
• Strong organization skills.

Preferred

In depth knowledge of internally used applications, systems, and standard network protocols to produce solutions that are or can be considered industry standards. Possess proactive initiative and deductive reasoning. The candidate must have the ability to work autonomously with favorable results. Network Automation experience with Ansible, Python, etc.

Certificates, Licenses, Registrations

• CCNP/CCIE – (Route and Switch Or security)
• Fortinet – NSE7
• Palo Alto – PCNSE
• Arista – ACE

Compensation

• Full-Time, Exempt
• Salary: $135k-175k, DOE

Benefits

• Health Coverage – Medical, Dental & Vision
• FSA Health and Dependent Care available
• 401(k) Plan
• Unlimited Paid Time Off (PTO)
• Observed Holidays Paid
• Cell Phone Allowance
• Collaborative, growth-driven culture