Manager, Network Security

We are seeking a Network Security Manager to lead a team of engineers and contractors responsible for safeguarding the organization’s network and cloud environments. In this role, you'll manage daily operations, guide technical decision-making, cultivate team growth, and ensure the consistent and secure delivery of foundational network-security functions.

The ideal candidate is a balanced thinker—technically fluent across modern network-security platforms and skilled in coaching, delegation, prioritization, and cross-team coordination. This is a hands-on leadership role where strategic clarity and operational excellence intersect.

Tasks, Duties, and Responsibilities

Leadership & People Management

• Manage, mentor, and develop a team of Network Security Engineers and contractors, fostering professional growth and technical depth.
• Delegate daily operational tasks, project work, and service requests based on skillset and priority.
• Conduct performance evaluations, provide coaching, and support career development plans.
• Establish team workflows, documentation standards, and operational best practices.
• Build a culture of accountability, continuous improvement, and technical curiosity.

Operational Management & Execution

• Oversee daily operations of the network-security program, including firewall rule management, SASE policy administration, NAC enforcement, IPAM governance, and microsegmentation policies.
• Coordinate incident response for network–security–related events and collaborate with the Cybersecurity, Cloud, and Network Engineering teams.
• Review complex technical implementations for potential risk, impact, or unintended dependencies.
• Ensure changes follow enterprise change-management protocols and undergo proper risk evaluation.
• Maintain the reliable availability of core security platforms, monitor system health, and address operational issues.
• Support hands-on tasks during escalations, outages, or peak project workloads.

Planning, Prioritization & Cross-Functional Collaboration

• Partner with architecture, cybersecurity, and infrastructure teams to align network-security strategy with enterprise objectives.
• Prioritize engineering tasks, projects, and backlog items in coordination with PMO or technology leadership.
• Participate in roadmap planning for network-security tooling, automation, and infrastructure modernization.
• Communicate project status, operational updates, and risks to leadership and stakeholders.
• Collaborate with cross-functional teams to evaluate new technologies and design secure network architectures.

Technical Oversight & Governance

• Provide subject-matter guidance on firewall architectures, cloud network-security controls, segmentation, packet-flow behavior, and secure network design principles.
• Oversee SASE configuration and policy lifecycle, ensuring visibility, compliance, and performance optimization.
• Manage IPAM governance, including address plans, DHCP/DNS standards, and lifecycle management.
• Oversee NAC platforms, authentication policies, device-profiling logic, and onboarding workflows.
• Ensure microsegmentation policies are aligned with application tiers, risk levels, and least-privilege strategies.
• Validate that security controls meet compliance, audit, and regulatory requirements.
• Promote automation opportunities and reduce manual operational overhead.

Knowledge, Skills, and Abilities

• Solid understanding of core networking concepts (routing, switching, TCP/IP, VPNs, DNS, DHCP).
• Proficiency in network-security technologies, including firewalls (on-prem and cloud-native), SASE frameworks, NAC platforms, and microsegmentation.
• Familiarity with cloud architectures and their associated security controls (AWS/Azure).
• Understanding of identity-centric security models and zero-trust architectures.
• Awareness of compliance frameworks and regulatory considerations (e.g., PCI-DSS, FFIEC, SOX).

Skills

• Strong leadership and team-building capabilities.
• Effective verbal and written communication, including the ability to translate technical impacts for non-technical audiences.
• Strong analytical and problem-solving skills with attention to detail in risk analysis.
• Skilled prioritization and project coordination across multiple concurrent initiatives.
• Ability to lead incident response activities and drive root-cause analysis.
• Competence in reviewing and validating complex network-security changes.
• Skill in stakeholder communication, negotiation, and expectation management.

Abilities

• Balance strategic vision with daily operational needs.
• Mentor engineers with diverse skill levels.
• Understand unfamiliar technologies and evaluate their impact.
• Collaborate with cross-functional teams and drive consensus.
• Stay calm and decisive during incidents or high-pressure scenarios.
• Uphold high standards of documentation, process discipline, and operational rigor.

Minimum Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Cybersecurity, or related field; equivalent professional experience considered.
• 5+ years in network or network-security engineering roles.
• 1–3 years of technical leadership experience (team lead, senior engineer, or manager).
• Experience managing or operating at least two of the following: firewalls, cloud security controls, SASE, microsegmentation, IPAM, NAC.

Preferred Qualifications

• Prior experience as a first-level people manager or technical team lead.
• Experience with automation tools (e.g., Ansible, Terraform), scripting, or infrastructure-as-code.
• Certifications such as CISSP, CCNP Security, PCNSE, or equivalent vendor credentials.
• Experience in regulated or high-security environments.

OneMain Financial (NYSE: OMF) is the leader in offering nonprime customers responsible access to credit and is dedicated to improving the financial well-being of hardworking Americans. Since 1912, we’ve looked beyond credit scores to help people get the money they need today and reach their goals for tomorrow. Our growing suite of personal loans, credit cards and other products help people borrow better and work toward a brighter future.

Driven collaborators and innovators, our team thrives on transformative digital thinking, customer-first energy and flexible work arrangements that grow lives, careers and our company. At every level, we’re committed to an inclusive culture, career development and impacting the communities where we live and work. Getting people to a better place has made us a better company for over a century. There’s never been a better time to shine with OneMain.

Because team members at their best means OneMain at our best, we provide opportunities and benefits that make their health and careers a priority. That’s why we’ve packed our comprehensive benefits package for full- and some part-timers with: 

• Health and wellbeing options including medical, prescription, dental, vision, hearing, accident, hospital indemnity, and life insurances 
• Up to 4% matching 401(k)   
• Employee Stock Purchase Plan (10% share discount)   
• Tuition reimbursement   
• Paid time off (15 days’ vacation per year, plus 2 personal days, prorated based on start date) 
• Paid sick leave as determined by state or local ordinance, prorated based on start date 
• Paid holidays (7 days per year, based on start date) 
• Paid volunteer time (3 days per year, prorated based on start date) 

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