Network Security Engineer

Posted Yesterday
Be an Early Applicant
Dallas, TX, USA
In-Office
Senior level
Artificial Intelligence • Cloud • Machine Learning • Infrastructure as a Service (IaaS)
The Role
Lead and mentor engineers to design, implement, and optimize hyperscale network security. Manage firewalls, proxies, segmentation, incident escalation, vulnerability assessments, and remediation. Build automation playbooks and integrate tools (Python, Terraform, vendor APIs) for lifecycle management. Coordinate with DevOps, infrastructure, and application teams to embed Zero Trust and secure cloud networking practices.
Summary Generated by Built In

The Company

NorthMark Compute & Cloud (NMC²) 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

As a Senior Network Security Engineer, you will play a critical role in managing, implementing and optimising a hyperscale network security infrastructure.
As a technical leader, you will oversee complex security architecture initiatives, mentor peer engineers, handle escalated incident response efforts and ensure compliance with the latest security standards. Our company roadmap is centred on automation, therefore a background in automation and interest in leveraging automation is key to this role. 

Responsibilities:

  • Mentoring junior and mid-level engineers, overseeing team activities and providing guidance in complex troubleshooting and architecture decisions 
  • Implementing and managing advanced security solutions using firewalls, proxy, system hardening, treat profile and segmentation strategies to secure the intellectual data
  • Acting as a lead escalation for critical security incidents
  • Developing automation playbooks, network security policies framework and consolidation, treat model and drive root cause analysis with corrective actions
  • Overseeing network vulnerability assessments, penetration testing coordination and remediation planning 
  • Championing the integration of automated tools for infrastructure build, day two support and lifecycle management of all security infrastructure using platforms like Python, Terraform, and vendor APIs, leveraging tools such as Algosec, Tufin, Jenkins and Git
  • Working closely with infrastructure, DevOps and application teams to embed security best practices throughout the technology stack

Requirements:

  • Extensive experience in network engineering and security engineering, along with proven architectural experience in trusted, untrusted and DMZ environments
  • Proven leadership experience in a senior or lead engineering role, with the ability to drive the team and work individually
  • Strong understanding of network protocols and the OSI model, with hands-on experience in TCP/UDP-based applications, routing, switching and load balancing
  • Extensive knowledge of network security technologies, including firewalls, VPNs, proxies, MACsec, IPsec, HTTPS, certificate chains, DNS, NTP, AAA, and domain-based authentication and authorisation
  • Expertise with multiple security vendors, such as, Palo Alto, Fortinet, Check Point and F5
  • Strong understanding of Zero Trust principles, segmentation, and secure cloud networking in AWS or Azure
  • Familiarity with scripting and automation using Python, Ansible, or Terraform for example 
  • Certifications such as CISSP, CCIE Security, GIAC (GSEC/GCIH/GXPN), Palo Alto, Fortinet or equivalent highly preferred

  

The following skills and experience would be beneficial: 

  • Core network with VxLAN EVPN DC architecture experience 
  • Experience with hybrid or multi-cloud environments
  • Prior involvement in M&A technical integrations
  • Background in building SOC capabilities or working with MSSPs
  • Excellent written and verbal communication skills
  • Firewall automation experience is beneficial

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.

Skills Required

  • Extensive experience in network engineering and security engineering, including architecture in trusted, untrusted and DMZ environments
  • Proven leadership experience in a senior or lead engineering role
  • Strong understanding of network protocols and OSI model; hands-on experience with TCP/UDP applications, routing, switching and load balancing
  • Extensive knowledge of network security technologies including firewalls, VPNs, proxies, MACsec, IPsec, HTTPS/TLS, certificate chains, DNS, NTP, AAA, and domain-based authentication/authorization
  • Expertise with security vendors such as Palo Alto, Fortinet, Check Point and F5
  • Strong understanding of Zero Trust principles, segmentation, and secure cloud networking in AWS or Azure
  • Familiarity with scripting and automation using Python, Ansible, or Terraform
  • Certifications such as CISSP, CCIE Security, GIAC (GSEC/GCIH/GXPN), Palo Alto, Fortinet or equivalent
  • Must be legally authorized to work in the United States without employer sponsorship now or in the future
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
157 Employees

What We Do

NorthMark Strategies is a strategic capital firm that combines investment capital with engineering and technology to build enduring businesses. The firm operates a High-Performance Computing platform and supports simulation, AI/ML-enabled engineering and data-driven design to accelerate portfolio companies. NorthMark deploys capital, operates complex businesses, and builds infrastructure (including compute and cloud services) to drive long‑term innovation and operational outcomes.

Similar Jobs

Oceaneering Logo Oceaneering

Security Engineer

Automotive • Information Technology • Other • Transportation • Energy
In-Office
Houston, TX, USA
11000 Employees

NorthMark Strategies Logo NorthMark Strategies

Security Engineer

Artificial Intelligence • Cloud • Machine Learning • Infrastructure as a Service (IaaS)
In-Office
Dallas, TX, USA
157 Employees

NorthMark Strategies Logo NorthMark Strategies

Security Engineer

Artificial Intelligence • Cloud • Machine Learning • Infrastructure as a Service (IaaS)
In-Office
Dallas, TX, USA
157 Employees

SonSoft Inc. Logo SonSoft Inc.

Security Engineer

Information Technology • Professional Services • Software • Consulting
In-Office
Houston, TX, USA
87 Employees

Similar Companies Hiring

Legora Thumbnail
Artificial Intelligence • Legal Tech • Software
New York, New York
700 Employees
Hanover Park Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
42 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
60 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account