Infrastructure Manager Jobs in Allen, TX (NOW HIRING)

The Company

NorthMark Compute & Cloud (NMC) is backed by dedicated leadership and investment, with a clear mission as it operates at the bleeding edge of technology. Its goal is to scale and enhance the high-performance computing (HPC) and cloud infrastructure that supports its clients' research, production, and delivery, enabling breakthroughs that shape the industries of tomorrow. Its engineers build critical infrastructure to eliminate friction in scientific research, simulations, analysis, and decision-making, accelerating discovery and driving faster innovation.

The Position

The Manager of Network and Infrastructure Security is a leadership role within NMC'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. At NMC, the network is not just connectivity it is the backbone of one of the largest private GPU clusters in the world, carrying the workloads of research teams and technology partners who demand uncompromising performance and security.

You will lead a team of engineers responsible for protecting the organization's network architecture and underlying infrastructure across its full attack surface. This role oversees the design and enforcement of network security controls, including segmentation and micro-segmentation strategies, edge security, and infrastructure hardening initiatives. The manager drives the organization's exposure management program by ensuring continuous network scanning, vulnerability identification, and timely remediation in alignment with risk priorities. Success in this role requires the ability to translate technical findings into strategic roadmaps while fostering cross-functional collaboration with infrastructure, cloud, and IT operations teams.

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

Requirements:

• 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

It is impossible to list every requirement for, or responsibility of, any position. Similarly, we cannot identify all the skills a position may require since job responsibilities and the Company's needs may change over time. Therefore, the above job description is not comprehensive or exhaustive. The Company reserves the right to adjust, add to or eliminate any aspect of the above description. The Company also retains the right to require all employees to undertake additional or different job responsibilities when necessary to meet business needs.

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 & Perks:

• Company-Paid Lunch Stipend: Lunch is provided via GrubHub

• Company-Paid Benefits: 100% Employer-Paid Medical in our High Deductible Health Plan, Dental and Vision benefits for employees and their families, 16 weeks of Paid Parental Leave, Employee Assistance Program, Life insurance, Short-Term Disability and Long-Term Disability

• 401(k): Company will match 100% of your contributions up to 6%

• Optional Employee-Paid Benefits: Medical insurance in our PPO plan and a variety of other benefits such as Health Savings Accounts (with Company Contribution!), Flexible Spending Accounts, Supplemental Life Insurance, Wellhub and more.

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

EQUAL OPPORTUNITY EMPLOYER

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.