Senior Cybersecurity Engineer

Onsite in Tewksbury, MA, this Senior Cybersecurity Engineer role supports complex DoD systems by defining cybersecurity requirements and ensuring compliance through RMF/ATO documentation and evidence-ready architecture. If you value structured delivery, collaboration across engineering teams, and measurable progress through Agile, you will have a clear path to contribute technical security expertise while partnering with program stakeholders to align work with priorities.

What you’ll do

• Define system-level cybersecurity requirements and architect secure solutions across complex DoD environments.
• Analyze security data, test results, and assessment findings to identify risk, guide remediation, and validate outcomes.
• Prepare, maintain, and improve RMF/ATO documentation and other required cybersecurity compliance artifacts.
• Create cybersecurity architecture artifacts, strategies, implementation plans, and security policies that support secure integration.
• Lead or guide vulnerability assessments, A&A activities, and remediation validation.
• Collaborate with engineering and program teams to evaluate cybersecurity design alternatives and integrate security considerations into system design.
• Perform internal cybersecurity audits to verify control implementation and compliance.
• Support the development and testing of security controls across networks, databases, operating systems, applications, and hardware/software components.
• Champion Agile practices and serve as the team’s Scrum Master, facilitating ceremonies, removing impediments, and enabling predictable, iterative delivery.
• Maintain team-level Agile metrics, support backlog refinement, and work with the Product Owner to keep security work clearly defined and aligned with CDRL and program priorities. Deliver high-quality cybersecurity documentation, technical evidence, vulnerability responses, and security artifacts each sprint.

Required qualifications

• Bachelor’s degree in Cybersecurity, Computer Science, Engineering, or a related technical field, plus 5+ years of relevant experience.
• Strong understanding of cybersecurity principles and compliance requirements, including the DoD Risk Management Framework (RMF) as defined in NIST SP 800-37.
• Active and transferable U.S. government security clearance required on day one; U.S. Citizenship is required.
• Experience applying security controls, hardening standards, and vulnerability mitigation across operating systems, aligned to NSA (FIPS), NIST (SP 800), DISA STIGs, and USCYBERCOM.
• Hands-on experience with network and system security administration, including secure configuration and account management for Windows, Red Hat Enterprise Linux, and common network platforms (such as Cisco).
• Familiarity with vulnerability scanning tools (Nessus, OpenVAS, SCC) and the ability to interpret and apply results to remediation actions.
• Proficiency working with cybersecurity documentation, configuration files, and scripting or automation for evidence collection.
• Experience as a Scrum Master or Agile facilitator, including leading ceremonies, maintaining team metrics, removing impediments, and supporting iterative delivery.
• Hands-on experience as a Scrum Practitioner by writing/refining user stories, estimating security tasks, and delivering high-quality cybersecurity documentation and artifacts each sprint.
• Ability to collaborate closely with Product Owners, engineering teams, and stakeholders to maintain backlog clarity, prioritize work, and integrate security tasks into Agile planning cycles.

Preferred qualifications

• Familiarity with DoDI 8510.01 and its direction of RMF and ATO activities in DoD environments.
• Experience supporting U.S. Government contracts in roles such as Information Assurance Engineer, ISSO, or cybersecurity SME.
• Security-related network or operating system certifications or training (examples include Cisco, Microsoft, Red Hat).
• DoDI 8570.01 IAT/IAM/IASAE Level III compliant certification preferred; candidates not yet certified may be expected to obtain a qualifying credential within 12 months of hire.
• Experience serving as a Scrum Master or Agile facilitator, driving continuous improvement.
• Experience as a Scrum Practitioner contributing to backlog refinement, user story development, task decomposition, and delivery of high-quality cyber documentation or security artifacts.
• Ability to work independently with minimal supervision while coordinating across cross-functional teams.

Security clearance

• DoD Clearance: Secret
• Status requirement: Ability to obtain INTERIM U.S. government issued security clearance prior to start date is required.
• Citizenship: U.S. citizenship is required because only U.S. citizens are eligible for a security clearance.

Compensation and benefits

Salary range: USD 86,800 - 165,200 per year.

• Medical, dental, and vision
• Life insurance
• Short-term disability and long-term disability
• 401(k) match
• Flexible spending accounts
• Flexible work schedules
• Employee assistance program
• Employee Scholar Program
• Parental leave
• Paid time off
• Holidays