Senior Mechanical Engineer in Groton

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Job DescriptionJob DescriptionSalary:

Job Title: Senior Mechanical Engineer

Location: Groton, CT (In-Person, Full-Time)

Department: Mechanical Engineering

Reports To: Mechanical Engineering Team Lead

Position Summary:

ThayerMahan, an leader and a fast-growing, mission-focused, innovative technology company in the Intelligence, Surveillance, and Reconnaissance (ISR) and Artificial Intelligence (AI) spaceis seeking a highly skilled and experienced Senior Mechanical Engineer to join and strengthen our growing mechanical engineering team. This role is ideal for a hands-on engineer who thrives in a fast-paced environment and is passionate about mentoring the next of engineers. You will play a critical role in the design, development, and deployment of marine systems while serving as a mentor and technical guide for a talented team of engineers.

Key Responsibilities:

• Design & Development: Lead the design, analysis, and testing of mechanical components and systems for marine systems.
• Mentorship & Training: Provide day-to-day mentorship to junior engineers, offering guidance on technical challenges, design reviews, best practices, and professional development.
• Project Leadership: Take ownership of key technical projects, from concept through deployment, ensuring technical excellence and adherence to timelines.
• Collaboration: Work cross-functionally with electrical, software, and field operations teams to ensure cohesive system integration.
• Documentation & Standards: Promote and help enforce consistent design practices, file management, drawing standards, and engineering documentation across the team.
• Continuous Improvement: Identify opportunities to improve processes, tools, and methodologies in the engineering department.
• Hands-On Involvement: Actively participate in prototyping, troubleshooting, and field deployments when necessary.

Qualifications:

Required:

• U.S. .
• Holds a security clearance or can obtain one.
• B.S. or M.S. in Mechanical Engineering or related field
• 8+ years of professional mechanical engineering experience, preferably in robotics, ocean technology, or ruggedized field systems
• Proficient in 3D CAD (Autodesk Inventor ), FEA, and drawing/drafting standards (ASME Y14.5)
• Demonstrated success in leading technical projects or products from concept to production
• Strong interpersonal skills and proven experience mentoring or training junior engineers
• Comfortable with hands-on work including prototyping, machining, and field assembly/testing

:

• Experience in marine systems, underwater vehicles, or autonomous platforms
• Familiarity with environmental sealing, corrosion resistance, and material selection for harsh environments
• Exposure to design for manufacturability (DFM), design for assembly (DFA), and rapid prototyping techniques
• Background in multidisciplinary system integration (mechanical + electrical/software)
• Prior experience in small to mid-sized companies or fast-paced R&D environments

What we Offer:

Competitive salary, comprehensive total rewards package (medical, dental, vision, 401K with employer match), and other great benefits. Opportunity to continue to develop your career at a growing organization.

If you meet the requirements and are ready to make waves with us, apply now!

ThayerMahan is an Equal Opportunity Employer and doesnt discriminate on the basis of , , sex, , , , , , , genetic information, protected veteran status, or other non-merit factor.

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