GSS Cybersecurity Senior Estimator - Tewksbury, MA; Tucson, AZ; OR McKinney, TX

Date Posted:

2026-01-26

Country:

United States of America

Location:

US-AZ-TUCSON-M05 ~ 1151 E Hermans Rd ~ BLDG M05 (External Site)

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

The ability to obtain and maintain a U.S. government issued security clearance is required.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type:

DoD Clearance: Secret

Security Clearance Status:

Active and existing security clearance required after day 1

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling to help our nation and allies defend freedoms and deter aggression.  We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat.  Our team solves tough, meaningful problems that create a safer, more secure world.

Our Global Security Services (GSS) is seeking a Cybersecurity Senior Estimator to support our team 100% onsite at our facility in Tewksbury, Massachusetts; Tucson, Arizona; OR McKinney, Texas.

As a Global Security Services (GSS) Cybersecurity Senior Estimator, you will be the focal point for proposal and capture efforts within GSS Cybersecurity, collaborating closely with Cybersecurity Leads and Information Systems Security Managers (ISSM) to ensure bids meet U.S. Government cybersecurity requirements for classified information systems. In this cross-functional role, you will develop accurate cost estimates based on proposal requirements and the scope of work, while providing comprehensive GSS Cybersecurity support from proposal to startup and sustainment. This position requires proactive engagement with the Capture Team, Engineering, Digital Technologies (DT), and other stakeholders to ensure proposals are thorough and aligned with GSS Cybersecurity needs.

What You Will Do

• Develop accurate cost estimates based on proposal requirements and GSS Cybersecurity scope of work.
• Collaborate with the Capture Team, Engineering, and DT to document functional requirements and translate them into GSS Cybersecurity Basis of Estimates (BOEs).
• Validate and analyze actuals, ensuring consistency in task descriptions and a sound estimating approach.
• Communicate effectively with multiple leadership levels to revise proposals based on feedback and ensure timely submissions.
• Train, mentor, and educate less experienced GSS Cybersecurity professionals, including estimators, on BOEs, proposal processes, and Earned Value Management System (EVMS) practices.
• Manage changes in the GSS Cybersecurity scope of work and ensure they are accurately reflected in BOEs
• Willingness to gain special access clearance for specific work activities as appropriate.
• Ability to travel 10% of the time.

Qualifications You Must Have

• Typically requires a University Degree or equivalent experience and minimum 8 years prior relevant experience, or an Advanced Degree in a related field and minimum 5 years’ experience.
• Experience in proposal estimation, capture efforts, or project management.
• Experience with Federal Acquisition Regulation (FAR), Defense Federal Acquisition Regulation Supplement (DFARS), Truth in Negotiations Act (TINA), and other government procurement regulations related to bid/cost proposals.
• Ability to obtain and maintain a U.S. Government issued security clearance; U.S. citizenship is required.

Qualifications We Prefer

• Active and transferable U.S. government issued security clearance is highly desirable.
• Knowledge of contracts, Statements of Work (SOWs), BOEs, and cybersecurity processes and practices.
• Experience with contract negotiation and management.
• Relevant certifications such as CISSP, CISM, or PMP.
• Control Account Management (CAM), Earned Value Management System (EVMS), or Project Management Institute (PMI) certification.
• Familiarity with APEX/SAP Managed Programs finance module and Business Warehouse or similar systems.
• Understanding of industry regulations and standards (e.g., NIST, DAAPM, JSIG).

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

Relocation Non-Eligible – Relocation assistance not available

Learn More & Apply Now!

Please consider the following role type definition as you apply for this role:

• Onsite: Employees who are working in Onsite roles will work primar