Senior Systems & Network Engineer

Forward Slash Technology; St. Louis (MO); On-site; USD 90,000 - 120,000; Full time

Job summary

A technology firm in St. Louis seeks a Senior Network Engineer to lead technical strategies and service delivery for clients. In this client-facing role, you will manage complex IT infrastructures and mentor junior engineers. The ideal candidate has over 10 years of experience in networking and IT project management. A bachelor's degree in computer science is required, along with proficiency in various security and network management tools. This full-time position is onsite in St. Louis.

Qualifications

• 10+ years supporting IT networks in MSP environments.
• Extensive experience with firewall deployments.
• Advanced expertise in Active Directory and Exchange.
• Skilled in hybrid infrastructure solutions.
• Experience implementing security frameworks.

Responsibilities

• Oversee daily system maintenance for clients.
• Implement high-level IT projects and collaborate with clients.
• Provide technical leadership and mentorship to junior engineers.
• Ensure client SLAs are met through monitoring.
• Lead architectural design sessions.

Skills

Networking & Infrastructure

Firewall & Security Appliances

Microsoft Ecosystem

Virtualization & Cloud

VoIP & Communications

Server & Platform Administration

Spam & Content Filtering

Security Frameworks (NIST, ISO 27001)

Communication Skills

Analytic and Problem-Solving

Education

Bachelor’s degree in computer science or related field

Tools

Barracuda

Fortinet

SonicWall

VMware

Azure

Mitel

SQL Server

Job description

Overview

Forward Slash Technology is a St. Louis-based Cyber Security, Information Technology, and Managed Services provider. We are seeking a Senior Network Engineer to join our St. Louis-based team. This is a client-facing role in which you will lead technical strategy and service delivery for a variety of SMB and enterprise clients. You\'ll design, implement, and secure complex IT infrastructures, mentor junior team members, and engage directly with clients to drive high-impact technology decisions. You\'ll collaborate in a culture that values innovation, mentorship, and continuous learning.

Responsibilities

• Oversee daily, weekly, and monthly maintenance to ensure client systems remain efficient and secure
• Direct and implement high-level IT projects, collaborating with clients and team members to meet deliverables
• Develop and maintain project roadmaps, ensuring alignment with strategic client objectives
• Serve as a technical escalation point for advanced troubleshooting and complex problem-solving
• Conduct code reviews, solution design reviews, and participate in peer mentoring
• Provide technical leadership and mentorship to mid-level and junior engineers
• Ensure client SLAs are met or exceeded through proactive monitoring and performance tuning
• Lead discovery and architectural design sessions with new clients
• Standardize documentation and technical procedures for internal and external use

Qualifications

Technical Expertise

• Networking & Infrastructure: 10+ years supporting IT networks in MSP environments. Proficient in Layer 2/3 switching, routing (OSPF, BGP), DNS, DHCP, and designing high-availability architectures with failover and disaster recovery
• Firewall & Security Appliances: Extensive experience with Barracuda, Fortinet, SonicWall, Meraki, and related firewall deployments
• Microsoft Ecosystem: Advanced expertise in Active Directory, Exchange (including O365), and Windows Server environments
• Virtualization & Cloud: Skilled in VMware, Hyper-V, and hybrid infrastructure solutions using Azure, Quest Rapid Recovery, and Barracuda tools
• VoIP & Communications: Deploy and manage VoIP systems (Mitel, Avaya), following industry best practices for network integration
• Server & Platform Administration: Proficient in managing SQL Server, Unix/Linux systems, IPSEC/SSL VPNs, and web hosting services
• Spam & Content Filtering: Experience implementing Barracuda web and spam filtering solutions

Security & Compliance Expertise

• Deep understanding of security frameworks such as NIST, ISO 27001, and CIS Controls
• Experience implementing and managing IDPS, NAC, WAF, and VPN solutions
• Familiarity with Zero Trust Architecture and IAM platforms
• Ensure secure client infrastructure through proactive risk identification and response

Project & Client Management

• Demonstrated success managing IT projects and customer-facing initiatives
• Excellent communication skills with both technical and non-technical stakeholders; adept at building long-term client relationships and delivering high-touch service
• Prior IT consulting experience (MSP background/experience is preferred)

Other Qualifications

• Ability to work on multiple projects simultaneously and prioritize work to meet adapting deadlines
• Strong analytic and problem-solving abilities
• Attention to detail
• Willingness to participate in on-call support activities and work irregular hours when needed
• Bachelor’s degree in computer science or related field

Preferred Certifications

• Cisco Certified Internetwork Expert (CCIE)
• Cisco Certified Network Professional (CCNP)
• Microsoft Certified: Azure Solutions Architect Expert
• Microsoft Certified Solutions Expert (MCSE) – Cloud Platform & Infrastructure

Compliance & Background Requirements

• Be a U.S. Citizen and hold a valid driver’s license with a clean record
• Pass a MSHP/Federal fingerprint-based background check
• Complete the CJIS Security & Privacy Training Certification

This is a full-time, onsite position based in our St Louis, MO office.