Manager, Network and Infrastructure Security

NorthMark Compute and Cloud LLC; Dallas (TX); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Company-Paid Lunch Stipend

100% Employer-Paid Medical

16 weeks of Paid Parental Leave

Life Insurance

401(k) with 100% match up to 6%

Job summary

NorthMark Compute and Cloud LLC is seeking a Manager of Network and Infrastructure Security in Dallas, Texas. This leadership role is crucial for maintaining the security and resilience of our data center’s infrastructure. The successful candidate will lead a team of security engineers, oversee various security initiatives, and ensure compliance with established security policies.

Qualifications include a Bachelor’s degree and at least 7 years of relevant experience, along with strong technical knowledge in network security and team management. The position offers comprehensive benefits including medical, paid leave, and a company match on 401(k) contributions.

Qualifications

• 7+ years of experience in network and infrastructure security.
• Deep technical knowledge of firewalls, IDS/IPS, and secure architecture.
• Experience managing a vulnerability scanning program.

Responsibilities

• Lead and develop a team of security engineers.
• Oversee implementation of network security controls.
• Direct network segmentation initiatives.

Skills

Network security concepts

Vulnerability management

Team leadership

Communication skills

Education

Bachelor’s Degree in IT-related field

Tools

Firewalls

IDS/IPS

VPNs

Zero-trust network access

Job description

Position Summary

The Manager of Network and Infrastructure Security is a leadership role within NorthMark Compute & Cloud (NMC²)’s Security organization, responsible for the security posture, operational health, and resilience of the network and infrastructure that underpins our data center and HPC environment.

Responsibilities

• Lead, mentor, and develop a team of security engineers across network security, exposure management, segmentation, and infrastructure hardening disciplines.


• Set team priorities, manage workloads, and ensure alignment with broader security and business objectives.


• Partner with infrastructure, cloud, and IT operations teams to drive security initiatives and ensure consistent policy enforcement across the organization.


• Oversee the design, implementation, and ongoing management of network security controls, architecture, and edge security.


• Direct the strategy and execution of network segmentation and micro‑segmentation initiatives to limit lateral movement and contain potential threats.


• Drive the organization’s network scanning and exposure management program to maintain continuous visibility into the attack surface.


• Establish processes for timely identification, prioritization, and remediation of vulnerabilities in alignment with organizational risk tolerance.


• Oversee infrastructure hardening efforts across servers, network devices, and edge components to reduce attack surface exposure.


• Translate technical findings and risks into actionable roadmaps and executive‑level reporting.


• Stay current on emerging threats, vulnerabilities, and industry best practices to continuously evolve the team’s capabilities and security posture.

Qualifications

• Bachelor’s Degree in an IT‑related field or equivalent experience.


• 7+ years of experience in network and infrastructure security, with 5+ years in a mid‑level or senior engineering role.


• Deep technical knowledge of network security concepts including firewalls, IDS/IPS, VPNs, and secure network architecture design.


• Hands‑on experience with network segmentation and micro‑segmentation technologies and strategies.


• Demonstrated experience managing a vulnerability scanning or exposure management program, including remediation tracking and risk prioritization.


• Strong understanding of infrastructure hardening standards and frameworks such as CIS Benchmarks, NIST, or DISA STIGs.


• Experience with edge security technologies including secure web gateways, zero‑trust network access (ZTNA), and related controls.


• Proven ability to lead and develop high‑performing technical teams while managing competing priorities in a fast‑paced environment.


• Strong communication skills with the ability to translate complex technical risks into clear, concise reporting for executive and non‑technical stakeholders.


• Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.

Benefits

• Company‑Paid Lunch Stipend through GrubHub.


• 100% Employer‑Paid Medical in a High Deductible Health Plan, along with dental and vision benefits for employees and families.


• 16 weeks of Paid Parental Leave.


• Employee Assistance Program.


• Life insurance, Short‑Term Disability and Long‑Term Disability.


• 401(k) with 100% company match up to 6% of employee contributions.


• Optional Employee‑Paid Benefits: Medical insurance in a PPO plan, Health Savings Accounts with company contribution, Flexible Spending Accounts, Supplemental Life Insurance, Wellhub, and more.


• 25 days of Paid Time Off plus 12 company holidays.

Equal Opportunity Employment Statement

NORTHMARK STRATEGIES LLC IS AN EQUAL EMPLOYMENT OPPORTUNITY EMPLOYER. THE COMPANY'S POLICY IS NOT TO DISCRIMINATE AGAINST ANY APPLICANT OR EMPLOYEE BASED ON RACE, COLOR, RELIGION, NATIONAL ORIGIN, GENDER, AGE, SEXUAL ORIENTATION, GENDER IDENTITY OR EXPRESSION, MARITAL STATUS, MENTAL OR PHYSICAL DISABILITY, AND GENETIC INFORMATION, OR ANY OTHER BASIS PROTECTED BY APPLICABLE LAW. THE FIRM ALSO PROHIBITS HARASSMENT OF APPLICANTS OR EMPLOYEES BASED ON ANY OF THESE PROTECTED CATEGORIES.