Senior Network Security Engineer Jobs in Springfield, MO

Senior Network Engineer

Job Summary
OMB is looking for a skilled Senior Network Engineer to design, implement, and maintain our enterprise network infrastructure. The Senior Network Engineer is responsible for the design, implementation, maintenance, and security of OMB Bank's enterprise network infrastructure. This role serves as the primary technical expert for all internal networking systems, cloud platforms, communication systems, and business continuity technologies. The Senior Network Engineer ensures the availability, integrity, and confidentiality of OMB Bank's critical systems in alignment with banking regulations, security standards, and organizational goals.

· Design, implement, and maintain OMB Bank’s LAN, WAN, SD-WAN, and wireless infrastructure including routers, switches, firewalls, and network access controls.

· Monitor network performance and availability, troubleshoot issues, conduct capacity planning, and maintain network documentation and configuration standards.

· On-premises AD & Identity Management: Design and administer Active Directory infrastructure (domain controllers, GPOs, user accounts, OUs, and RBAC) while integrating with Azure AD via AD Connect for hybrid identity and SSO.

· Security & Supporting Services: Monitor AD health, audit logs, and authentication events to detect and remediate anomalies, and manage associated DNS, DHCP, PAM, and banking compliance requirements.

· Azure & M365 Administration: Administer Microsoft Azure (virtual networks, VMs, Azure AD) and the full Microsoft 365 tenant including Exchange Online, Teams, and SharePoint.

· Security & Cost Optimization: Implement and enforce cloud security policies, conditional access, and compliance controls while monitoring costs and recommending optimization strategies.

· Administer the bank’s VoIP/PBX system including call routing, voicemail, auto-attendants, and SIP trunks, coordinating with telecom vendors for upgrades and issue resolution.

· Design and manage secure remote access solutions (SSL VPN, site-to-site VPN, Zero Trust, and MFA) ensuring compliance with banking regulatory and security requirements.

· Manage network security infrastructure (firewalls, IDS/IPS, SIEM, endpoint protection), conduct vulnerability assessments, respond to incidents, and ensure compliance with FFIEC, GLBA, and PCI-DSS.

· Oversee administration and maintenance of IP-based camera and access control systems across all branch locations, ensuring proper data retention, access controls, and policy compliance.

· Implement and test disaster recovery (DR) and business continuity plans (BCP) for network and IT systems

· Maintain and test backup systems, failover procedures, and recovery time objectives (RTOs)

· Document DR runbooks and ensure all critical systems have tested recovery procedures

· Coordinate with business units to validate continuity capabilities and regulatory DR requirements

Primary Work Location and Schedule:

· 3050 S Delaware Ave, Springfield MO 65804

· 8:00 am - 5:00 pm Monday – Friday; occasional additional hours as needed.

· Full-time – 40 hours per week average

· Travel may be required throughout OMB footprint

Position Requirements:

· Bachelor’s degree (BA) in Information Technology, Computer Science, Network Engineering or related field required

· Equivalent combination of education and directly relevant experience may be considered

· Minimum 5–7 years of progressive experience in network engineering or a related IT infrastructure role

· Prior experience in a financial institution, banking, or highly regulated industry strongly preferred

· Demonstrated experience with enterprise network design, cloud platforms, and security systems

· CCNP, CCIE, or equivalent Cisco/network certification (required)

· Microsoft Certified: Azure Administrator Associate or higher (preferred)

· CompTIA Security+, CISSP, or equivalent security certification (preferred)

· ITIL Foundation or equivalent (preferred)

· Expert-level knowledge of routing protocols (BGP, OSPF), VLANs, QoS, and network segmentation

· Hands-on experience with Microsoft Azure, Azure AD, and Microsoft 365 administration

· Proficiency with firewall platforms (Palo Alto, Fortinet, Cisco ASA, or equivalent)

· Experience with VoIP systems and unified communications platforms

· Familiarity with IP camera/access control systems and physical security integration

· Strong understanding of cybersecurity frameworks (NIST, CIS) and banking regulations (FFIEC, GLBA)

· Proficiency in scripting and automation (PowerShell, Python, or similar) a plus

· Effective time management skills (capable of managing and prioritizing multiple tasks)

· Demonstrated self-motivation; productive, efficient, organized, accurate work output with no supervision while working independently and within a team environment

· Excellent verbal, written and interpersonal communication skills with daily collaboration with individuals to facilitate production needs and audit parameters

· Ability to apply strategic planning, activity coordination, and problem-solving techniques to complex issues of multiple facets and variables in non-standardized situations

Benefits:

· Excellent work environment where you are appreciated and recognized for your individual efforts and contributions.

· Stability with a locally owned community bank that is growing and expanding in the region

· Paid Leave: Paid Time Off, Military, Bereavement, and Jury Duty

· Full and partially paid insurance plans: life w/ AD&D, disability, medical, and dental

· Cost friendly insurance: vision, critical illness, accident, supplemental life w/ AD&D

· 100% match of retirement savings (up to plan limit)

· Discounted financial service fees on select OMB products and services

· Plus more

Futures made brighter. Banking made better.

OMB Bank was founded in 1999 with a commitment to excellence in service. We offer our customers the latest in banking products and services combined with old-fashioned customer service. We are committed to giving our team members the kindness, courtesy, and professionalism they deserve. This philosophy has resulted in our growth from one bank in Springfield to ten branches in Springfield and surrounding communities in Missouri and Kansas.

Disclaimer:

The above description relates the general nature and level of work performed by people assigned to this classification. It is not to be construed as an exhaustive list of all responsibilities, duties, and skills required of personnel so classified. All personnel may be required to perform tasks outside of their regular responsibilities from time to time, as needed.

EOE/VETERANS/DISABLED E-VERIFY EMPLOYER