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Leidos
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September 20, 2026
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Cyber Security Engineer

Tewksbury, MA
Full-time
Onsite
$58K/yr - $105K/yr
Entry, Mid Level
Leidos is a technology and mission innovation company serving government and commercial customers. The Cybersecurity Engineer will work onsite in Tewksbury, Massachusetts, securing critical IT and OT systems by integrating security requirements, conducting vulnerability assessments, hardening systems, and automating secure engineering practices.
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Responsibilities

  • Integrate security requirements into IT systems
  • Conduct vulnerability assessments
  • Maintain and troubleshoot secure Windows and Linux baselines
  • Implement system hardening and compliance
  • Implement and integrate static and dynamic code analysis tools
  • Research and evaluate Cybersecurity tools and methodologies
  • Collaborate with cyber and product architects to harden platforms and tool chains
  • Define and enforce secure-by-default software engineering practices
  • Document and automate best practices

Qualification

Required

  • • Self-starting individual with the right attitude, aptitude to identify, take ownership of and solve challenging problems
  • • Interest in continual learning and development of the team and themselves
  • • Ability to work collaboratively and independently to develop creative solutions
  • • Passion for securing and maintaining IT and OT systems critical to national and international security
  • • Bachelor's degree in Computer Science, Cybersecurity, Engineering, or a related field. Additional experience, certifications or training may be considered in lieu of degree
  • • 1-3+ years of relevant IT/ DevOps/Security Engineering experience
  • • Active DoD Approved 8570/8140 Baseline Certification or ability to obtain within 6 months (e.g. CompTIA Security+, Network+, CySA+, Microsoft Azure Fundamentals, etc)
  • • Beginner to intermediate Windows, Linux and Networking skills
  • • Experience in hardening modern operating systems and implementing security engineering best practices

Preferred

  • • Programming/Scripting: Python, Bash, PowerShell, C++, C#, Java (minimum)
  • • Networking: Strong understanding of network architecture - Experience with core infrastructure services administration such as AD, DNS, DHCP, and File Server administration
  • • Experience with Vulnerability Management (e.g., Tenable Security Center / Nessus)
  • • Experience with DISA STIGs and/or CIS Benchmarks; deploying secure images with Ansible, SteelCloud, and/or Microsoft Deployment Toolkit (MDT)
  • • Experience with NIST Cybersecurity Framework, ISO 27001, NIST 800-171 (CMMC), or Risk Management Framework (RMF)

Benefits

  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement
Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.
Glassdoor
3.9
Founded in 1969
Reston, Virginia, USA
10001+ employees
https://www.leidos.com
Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.
Glassdoor
3.9
Founded in 1969
Reston, Virginia, USA
10001+ employees
https://www.leidos.com