Principal Mechanical Engineer

RTX (Raytheon); United States; Remote; USD 120,000 - 190,000; Full time

Benefits offered by this job

Parental leave

Flexible work schedules

Educational assistance

Child/adult backup care

Job summary

RTX is seeking a Principal Mechanical Engineer to design RF systems for challenging thermal and high-vibration environments, and to lead as a REA or IPTL. You will coordinate with programs, ensuring success within cost and schedule while guiding junior engineers.

We value clear communication, mentorship, and the ability to present technical results to customers. This 100% remote role requires a U.S. security clearance and citizenship.

Qualifications

• STEM degree with 8+ years of relevant experience, or advanced degree with 5+ years.
• Experience with Mechanical Design of defense electronic systems.
• GD&T and ASME drawing standards experience.
• Solid modeling with Creo or equivalent for 3+ years.

Responsibilities

• Lead programs as REA or IPTL and liaison to programs.
• Provide technical guidance and mentor matrix team.
• Lead RF system design for high vibration environments.
• Make technical presentations and maintain customer relationships.
• Communicate effectively with leadership and teams.
• Oversee junior engineers' assignments and performance.

Skills

Electronics packaging design

Thermal/structural analysis

Mentoring/leadership

Customer relations/presentations

Self-starting/communication

Education

Bachelor's degree in STEM

MS degree preferred

Tools

Creo/Pro/Engineer

FEA software

GD&T

Job description

Date Posted: 2026-10-05

Country: United States of America

Location: US-CA-REMOTE

Position Role Type: Remote

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 RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings 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. We deliver solutions that help our nation and allies defend freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

The Principal Mechanical Engineer is a key technical contributor to the programs and products supported by the department. These activities may include designing Radio Frequency (RF) systems for challenging thermal and high vibration environments. This candidate will lead programs as a Responsible Engineering Authority (REA) or Integrated Product Team Lead (IPTL), and serves as a liaison to programs, ensuring program success along technical, cost and schedule parameters, as well as overseeing junior engineer's job assignments and performance.

This position is 100% remote.

What You Will Do

• Possess working knowledge of electronics packaging design and manufacturing.
• This knowledge set includes, but is not limited to, thermal and structural design and analysis, electrical component design, construction and failure modes, printed wiring board and circuit card assembly processes and best practices, surface mount and through hole component installation processes and failure modes, metal fabrication and finishing methods, RF isolation mechanical design, and environmental test methods and equipment.
• Have working knowledge of electronics/processor systems design and development utilizing COTS/MOTS components and products.
• Provide technical guidance and act as a mentor to his/her matrix team.
• Make technical presentations and establish customer relationships.
• Be a "self-starter" able to lead by example, possessing strong interpersonal, written and verbal communication skills, and maintain positive relationships and satisfaction with functional and program leadership.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or an advanced degree in a related field and minimum 5 years' experience.
• Experience with Mechanical Design, Development and/or Implementation of Defense related Electronic Systems.
• Experience with Geometric Dimensioning and Tolerancing (GD&T) and ASME drawing and documentation standards and procedures.
• Experience with solid modeling with a minimum of three years of creating and documenting mechanical designs in Pro/Engineer/CREO or similar modeling tools.

Qualifications We Prefer

• Experience with EW/Radar Systems or RF Products.
• Experience with Conformal Antenna Array Packaging.
• Experience with managing budget and schedule (Earned Value Management (EVM).
• Previous experience with design reviews including preparation of chart decks, generating design artifacts and presenting to customers.
• Experience with electronics packaging, cabling and harness design, or printed wiring board designs and routing.
• Experience with structural and thermal analysis using FEA modeling techniques.
• Experience developing Basis of Estimate (BOEs) for proposals and providing proposal technical volume leadership.
• Proficiency with Parts Management and Materials and Process Engineering COTS / MOTS Design and Development.
• Experience executing root cause analysis and developing effective corrective actions.
• Experience interfacing and communicating with customers (internal/external), regarding assessments of program performance (technical, cost and schedule).

What We Offer

• A total rewards package that goes above and beyond with compensation; healthcare, wellness, and work/life benefits; career development and recognition programs.
• Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.

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