Senior Mechanical Engineer

Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable.

Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. If this sounds like the kind of environment where you can thrive, keep reading!

The Digital Modernization Sector brings together our digital transformation and IT programs, allowing us to better serve our customers through scale and repeatability. (Group Profile/Link to Group page) - https://www.leidos.com/capabilities/digital-modernization Your greatest work is ahead! The NISC IV program at Leidos is seeking a Senior Mechanical Engineer to work in the Federal Aviation Administration (FAA) Regional Office in El Segundo, CA which is in the Los Angeles area.

The Mechanical Engineer will provide engineering support to the FAA Los Angeles Enroute Engineering Center which includes project management and project planning for various Air Route Traffic Control Center construction and upgrade modernization projects. Specific duties for this position include: Provide expertise in all aspects of the complete project management lifecycle.

Provide Mechanical Engineering Subject Matter expertise (SME) support by overseeing the feasibility, design, planning, and installation of Heating, Ventilation and Air-Conditioning, and Environmental Direct Digital Control Systems. Provide Mechanical Engineering SME ) support through dynamic participation in team reviews of design and scope, and assembly of the design package.

In addition, provide status reports on site project progress, status reports on schedule updates, participate in Planning and Requirements Group (PRG) matrix meetings, and guide Operational Risk Management and Safety meetings. Provide verified heat load calculations including: heating peak, cooling peak, ventilation and process load calculation used for system sizing, and final calculation for energy compliance.

Analyze and review existing engineering drawings and documents and provide observations on accuracy and completeness, and recommendations for improvement. Provide Computer-Aided Drafting and Design (CADD) drawings using AutoCAD and MasterSpec in conformance with FAA standards. Provide/evaluate system and equipment design package requirements.

Assist in preparing Draft project scope agreements and project schedules. Prepare engineering risk assessments, and provide recommendations and proposals of actions or improvements to mitigate potential risks resulting from site, facility, and project/program changes. Please Note: This will be onsite (El Segundo, CA) with 1-2 days potential for telework with managers approval.

Required

Qualifications: Bachelor's degree and 4+ years of prior relevant experience OR Master's degree with 2+ years of prior relevant experience. Additional years of relevant experience maybe considered/accepted in lieu of degree. 4 years of applicable mechanical engineering experience including project management and design of building mechanical systems.

Experience with ductless split systems, heat recovery systems, residential type split systems, furnace, direct expansion cooling coils, unitary roof top package units, variable air volume systems, air handling units, chillers, boilers, vehicle exhaust systems and other heating, cooling, ventilation, air distribution, pumping, hydronic piping, and indoor air quality systems.

Performed and verified heat load calculations which include: heating peak, cooling peak, ventilation and process load calculation used for system sizing and final calculation for energy compliance. Prepared design development and construction drawings which include: initial schematic, design development and final construction drawings for plan check submittal.

Ability to obtain a Public Trust Security Clearance Suitability (To be eligible for Public Trust Security Clearance, one must be either a U.S. Citizen OR a U.S. Permanent Resident/Green Card holder who has resided in the U.S.A for the past 3 years of the past 5 years consecutively with no breaks).

Desired

Qualifications: Familiarity with FAA and the National Airspace System (NAS) is a plus but not necessary. Professional Mechanical Engineer registration is a plus but not absolutely necessary. Please Note: The program budget salary for this role could fall anywhere between high $100,000 to low/high $120,000 with a slight wiggle room (no guarantees) based on relevant experience and assessment.

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. Leidos is growing! Connect with us on LinkedIn and Facebook.

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: August 5, 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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.

Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com. Pay and Benefits Pay and benefits are fundamental to any career decision.

That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to spam.leidos@leidos.com.

Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.