Network Security Engineer
About The Position
Join Heritage Bank as the force behind secure banking operations. The Sioux Falls -based Network Security Engineer role is a high-impact opportunity for a skilled technical leader to own network performance, strengthen cybersecurity controls, and help protect the integrity, availability, and resilience of our technology environment. The Network Security Engineer is responsible for the design, implementation, security, and maintenance of the bank’s network and IT infrastructure. This role ensures the confidentiality, integrity and availability of bank systems in alignment with regulatory expectations. This is a hands-on technical role with full ownership of network operations and cybersecurity controls, working closely with the VP of Information Technology to support secure and reliable banking operations.
Requirements
- Bachelor’s degree in information technology, Computer Science, Cybersecurity or related field (or equivalent experience)
- 5+ years of experience in: network engineering, IT infrastructure or cybersecurity operations. Preferably in financial services or a regulated industry.
- Strong knowledge of routing and switching (Cisco, Aruba, or similar)
- Experience with firewalls (e.g., Fortinet, Palo Alto, Cisco ASA)
- Familiarity with VPNs, VLANs, QoS, and network segmentation
- Understanding of cloud networking (Azure/AWS)
- Knowledge of cybersecurity principles and frameworks
- Strong problem-solving and analytical skills
- Ability to work independently and manage multiple priorities
- Excellent communication skills for both technical and non-technical stakeholders
- High attention to detail and commitment to security and compliance
- Proactive mindset with a focus on continuous improvement
Responsibilities
- Design, implement, and maintain LAN/WAN infrastructure across headquarters, branches, and remote locations
- Manage routers, switches, firewalls, VPNs, and wireless networks
- Monitor network performance and proactively address capacity, reliability, and latency issues
- Manage MPLS, SD-WAN, and secure remote access solutions
- Support connectivity for core banking systems, online/mobile banking platforms, and third-party vendors
- Implement and maintain secure network architectures aligned with banking regulatory requirements (e.g., FFIEC guidance)
- Manage firewalls, intrusion detection/prevention systems (IDS/IPS), and network access controls
- Conduct regular vulnerability assessments and remediation efforts
- Support audits and examinations by internal auditors and regulatory agencies
- Maintain documentation for compliance and security standards
- Administer user access controls and permissions
- Oversee the patching strategy
- Utilize network monitoring tools to ensure uptime and performance
- Lead troubleshooting efforts for network outages and service disruptions
- Participate in incident response, root cause analysis, and post-incident reporting
- Maintain and test disaster recovery and business continuity network components
- Lead or contribute to IT infrastructure projects, including upgrades, migrations, and new branch deployments
- Evaluate and recommend new technologies to improve performance, security, and scalability
- Assist in evaluating and onboarding new vendors and monitoring providers for performance and risk
- Maintain accurate network diagrams, configurations, and procedures
- Establish and enforce network standards and best practices
- Provide technical guidance to junior IT staff
Benefits
- paid time off
- paid holidays
- paid volunteer days
- medical insurance
- dental insurance
- vision insurance
- 401(k)
- ESOP retirement plans
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What This Job Offers
Job Type
Full-time
Career Level
Senior
