Mechanical Engineer

Leidos is seeking a Mechanical Engineer to lead cutting-edge engineering efforts within the Undersea Systems Division . This role is a unique opportunity to support underwater vehicle systems, maritime sensors, subsea telemetry, and ISR solutions in support of critical defense and national security missions.

You'll be an engineer supporting a multidisciplinary team developing and supporting customers with advanced maritime technologies, from production processes to prototype design .

Leidos’ Undersea Systems Division is a recognized leader in undersea technologies , delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms . We’re known for achieving “industry firsts” in the most challenging maritime domains, as well as supporting well-developed processes and procedures to support excellence in execution for our customers.

Join us and be part of a world-class team delivering unmatched solutions for today's most pressing maritime missions.

Why Join Us?

· Make a Mission Impact: See your work directly contribute to U.S. maritime dominance by delivering and sustaining critical systems the warfighter depends on.

· Turn Capability into Readiness: Support proven technologies through production, integration, fielding, and long-term operational support.

· Own Real-World Results: Solve the production, quality, supply chain, and sustainment challenges that determine whether complex systems are ready when the mission demands them.

· Work with an Exceptional Team: Collaborate with engineers, manufacturing professionals, technicians, program teams, suppliers, and customers to deliver reliable systems.

· Build Capability That Lasts: Help improve how we produce, support, upgrade, and sustain maritime systems throughout their operational lifecycle.

What You’ll Do

· Provide hands-on mechanical engineering support for the production, integration, testing, and sustainment of complex maritime systems.

· Resolve production and field issues through technical investigation, root-cause analysis, and implementation of practical engineering solutions.

· Improve product designs for manufacturability, reliability, maintainability, and cost while maintaining system performance and mission requirements.

· Develop and maintain mechanical drawings, specifications, bills of material, work instructions, and other technical documentation needed to support production.

· Work closely with manufacturing, quality, supply chain, technicians, and suppliers to address material, component, and assembly challenges.

· Support configuration changes, obsolescence management, component substitutions, repairs, and upgrades throughout the product lifecycle.

· Participate in system integration, test, troubleshooting, and disposition of nonconforming hardware to keep production and delivery on track.

· Provide engineering support for fielded systems, helping ensure delivered products remain reliable, supportable, and mission ready.

What You Bring

Required Experience:

• •Bachelor's or Master’s degree in Engineering (Systems, Mechanical, Ocean), Physics, or Math
• •4-8 years of experience with subsea maritime systems or other integrated electro-mechanical systems
• •4+ years of experience with leading integrated teams
• •Exposure to DoD technical program execution
• •U.S. Citizenship with ability to obtain a SECRET clearance

Preferred Experience:

• •Applicable experience in the industry may be possible in lieu of a degree
• •Over 4 years leading design, development, and integration of complex subsea maritime systems
• •Experience with UUVs, deployed subsea systems, and underwater payloads
• •Experience with manufacturing processes and procedure development
• •Experience with underwater acoustics
• •Proven track record in product manufacturing and transitioning designs to production
• •Familiarity with ISO 9001:2015 and quality-focused engineering processes
• •Exposure to DoD program execution, including contract, financial, and subcontractor management.

SUBSEAMSS

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

October 7, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.