Mechanical Engineer I
Affiliated Engineers Inc
Overview Join a Team Where Engineering Excellence Drives Opportunity At Affiliated Engineers, Inc. (AEI) , we bring together expertise and innovation to solve the most complex challenges. Since 1978, we’ve supported mission-driven organizations in designing systems and environments that advance society and improve lives. Today, with more than 900 professionals across 22 offices, we help shape the future of healthcare, science and technology, energy, education, and other vital sectors. From elevating patient care in Mayo Clinic’s world-class hospitals to enabling discovery in high-containment laboratories for U.S. agencies and driving environmental progress with Microsoft’s renowned Thermal Energy Center, our work enriches the human experience, safeguards the environment, and pushes the boundaries of possibility. AEI consistently earns national recognition from leading industry publications, including Building Design+Construction, Engineering News-Record, and Consulting‑Specifying Engineer, with distinctions such as being named the #1 Laboratory Engineering Firm in the nation and receiving multiple Best of the Best Project awards, underscoring the lasting legacy of our work. At AEI, you’ll join a collaborative community where your expertise fuels innovation, your ideas drive progress, and your work helps shape a brighter future. As a Mechanical Engineer I in our Pasadena office, you will help us empower our clients to achieve energy‑efficient building solutions, save global environments, and create a better, greener future for all. Why we need you: Within our team framework, you will initially work with and be mentored by experienced engineers and will yourself help to mentor designers. Your initial assignments will include performing load calculations, determining system sizing and layouts, calculating equipment sizes, selecting equipment, completing field surveys, and reviewing equipment shop drawings. As you gain project experience, you will take on a greater role in leading mechanical project teams, writing specifications, participating in project meetings with clients and other consultants, and supporting construction‑phase work. Expertise of our most successful Mechanical Engineer I: BSME/BSAE from ABET accredited school. Minimum GPA of 2.5. Non‑academic internship. Leadership involvement in extracurricular activities/student organizations preferred. EIT certification (Passed the FE exam) a plus. Internship experience in the MEP consulting engineering field preferred. Effective skills to help you flourish: Strong spoken and written communications skills. Excellent organization and time management skills. Quick technical comprehension and motivation focused on client outcomes. Able to effectively prioritize multiple tasks. #J-18808-Ljbffr Affiliated Engineers, Inc.
$95k - $115k
...company is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. MECHANICAL ENGINEER (COMPONENTS BUILD ENGINEER STARSHIP) The Starship Components Manufacturing team assembles, tests, troubleshoots, and delivers...SuggestedPermanent employmentTemporary workInternshipWeekend work- United States Digital Space LLC in California is seeking a Mechanical Engineer specialized in manufacturing components for the Starship project. The role involves designing high-quality flow control devices and working closely with engineers to optimize production processes...Suggested
$80k - $120k
...Facility Service Group Sales Sales Engineer The Facility Service Group typically handles projects that require quick turnaround.... ...Why join ACCO? ACCO Engineered Systems is one of the largest mechanical contractors in the country. Since 1934, owners and builders have...SuggestedTemporary workFor contractorsWork experience placementWork at officeMonday to FridayFlexible hours- Radiant Industries, based in El Segundo, California, seeks a highly motivated Staff Mechanical Engineer. This role focuses on owning critical fluid systems for the innovative Kaleidos microreactor project, pioneering the industry with portable nuclear solutions. The ideal...Suggested
- Radiant Industries in El Segundo is seeking a Senior Mechanical Engineer specializing in structural design for their portable nuclear microreactors. You'll develop critical structures, ensuring reliability through thermomechanical analyses. The ideal candidate has a Bachelor...Suggested
- ...in El Segundo, made up of former SpaceX, Anduril, and Lockheed engineers, to develop and mass produce life‑saving systems. Backed by... ...deployment around the world. Job Overview We are seeking a skilled mechanical design engineer with a strong design and testing background....Immediate start
- Pow.bio, located in El Segundo, CA, is seeking a Mechanical Engineer, Fluids Systems to take ownership of fluid systems for the Kaleidos reactor project. Responsibilities include analyzing thermal and fluids systems, component selection, and managing suppliers to achieve...Flexible hours
$100k - $130k
...components for platforms such as the F-35, F-16, F/A-18, 737MAX, 787, A320neo, A321, Mk-48, and M1 Abrams. Overview: The Mechanical Test Engineering role is responsible for owning the testing procedures used to prove new designs are fit to fly. You will serve as the...Permanent employmentInternshipFlexible hours$80k - $120k
...and scheduling the work internally. Initially, this person is given sales leads for some established customers. The Service Sales Engineer is also expected to develop new clients to attain sales goals. Responsibilities Identify, sell, and negotiate repair services for...Temporary workWork at officeMonday to FridayFlexible hours$135k - $190k
SPACE EXPLORATION TECHNOLOGIES CORP in Hawthorne, California, is seeking a Sr. Welding Engineer for the Starship program. This role involves leading a team to support advanced welding processes and ensuring maximum reliability of critical components. Candidates should...- Affiliated Engineers, Inc. is seeking a Mechanical Engineer II in Los Angeles to design innovative, energy-efficient HVAC systems. The role includes developing system designs, collaborating with various stakeholders, and working in a flexible, supportive environment. Ideal...Flexible hours
- ...CapEx and make vs buy strategies Create detailed models and engineering drawings in SOLIDWORKS Conduct rigorous testing and iteration... ...line. Qualifications Bachelor’s or Master’s degree in mechanical or manufacturing engineering or a related technical discipline...Permanent employmentWeekend work
$205k - $245k
...detection solutions that give the ultimate advantage: time. Role Overview: CHAOS is seeking a Senior Principal Mechanical Engineer to serve as the mechanical authority and provide high-value, hands-on mechanical expertise for the integration of ruggedized...Full timeWork experience placementCasual workRelocation package- Dormont Manufacturing Co is looking for a Mechanical Build specialist in El Segundo, California. In this role, you'll own the mechanical... ...build process of Poseidon robotic systems, collaborating with engineers to ensure high-quality production standards are met. We're...
- Approach Venture in El Segundo, California is seeking a Mechanical Engineer to focus on space-based interceptor systems. This role involves hands-on mechanical engineering execution including design and development of systems, CAD modeling, structural analysis, and prototype...
$100k - $130k
...components for platforms such as the F-35, F-16, F/A-18, 737MAX, 787, A320neo, A321, Mk-48, and M1 Abrams. Overview The Mechanical Build Engineering role is responsible for owning the build procedures used to develop qualification hardware, and iterate on the initial...Permanent employmentInternshipFlexible hours- Pow.bio is seeking a Senior Equipment Engineer in El Segundo, CA, to work closely with design and manufacturing teams to innovate custom... ...will have a Bachelor's degree and at least 4 years of mechanical equipment design experience. The role involves developing equipment...
- Radiant Industries in El Segundo seeks a Senior Equipment Engineer to collaborate with design engineers and manufacturing teams in innovating production equipment for their nuclear microreactor system. This role requires a bachelor’s degree in a relevant engineering discipline...
- United States Digital Space LLC in Hawthorne, CA is seeking a Sr. Mechanical Engineer (HVAC) to design and activate advanced manufacturing facilities. You will become an expert in HVAC and fluid systems, driving impactful solutions in the quest for space exploration. The...
$109k - $150k
...Senior Mechanical Design Engineer El Segundo, California A New Paradigm For Space Operations. Who We Are: Space Kinetic is a dual use space technology startup building a completely new architecture for space operations – one that brings the advantages of...Permanent employmentFlexible hours$140k - $200k
...through abundant, low-cost clean energy. Founded by an ex-SpaceX engineer, Critical Energy designs and manufactures factory-built,... ...Role: We are seeking an innovative and versatile Senior Mechanical Design Engineer to create new turbomachinery. Collaborating with...Immediate startFlexible hours- ...Overview Wardstone is looking for a Mechanical and Structural Engineer to own the mechanical architecture and structural integrity of our first missile interceptor, Hailstorm. This role includes missile interceptor sizing, outer mold line (OML) design, actuator mechanics...Temporary work
$111.35k - $150.65k
Facilities Mechanical HVAC Engineer (Experienced or Senior) Company: The Boeing Company Boeing’s Global Real Estate and Facilities (GREF) organization is currently seeking a Facilities Mechanical HVAC Engineer , at Experienced or Senior level, to join our Engineering and...Permanent employmentFor contractorsWork experience placementInterim roleRelocationVisa sponsorshipWork visaFlexible hoursShift work$111.35k - $150.65k
...Find your future with us. Boeing’s Global Real Estate and Facilities (GREF) organization is currently seeking a Facilities Mechanical HVAC Engineer , at Experienced or Senior level, to join our Engineering and Technology (E&T) team in El Segundo, CA to provide support...Permanent employmentFor contractorsWork experience placementInterim roleRelocationVisa sponsorshipWork visaFlexible hoursShift workDay shift- The Boeing Company in El Segundo, CA is seeking a Facilities Mechanical HVAC Engineer at Experienced or Senior level to support Southern California's infrastructure. You will ensure compliance with building codes and regulations while providing valuable recommendations...
- Stealth Startup based in Gardena, CA, is seeking a skilled engineer to design and develop low-cost, high-reliability hardware systems... ...ideal candidate should have a Bachelor’s or Master’s degree in mechanical or manufacturing engineering and 3-10 years of relevant hands-...Permanent employment
$111.35k - $150.65k
The Boeing Company is seeking a Facilities Mechanical HVAC Engineer in El Segundo, CA. The role involves ensuring compliance with building codes and customer requirements while developing technical designs and cost estimates. Candidates should have a Bachelor's degree...$135k - $190k
...SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. SR. MECHANICAL ENGINEER (HVAC) As a member of the construction and infrastructure team, you will design, build, and activate some of the world’s most...Permanent employmentTemporary workWeekend work$33.18 - $47.41 per hour
...internal department relationships (i.e. accounting, purchasing, engineering, construction, fabrication shops, legal, etc.). Collaborates... ...Construction Management, or related field. Concentration in Mechanical Engineering is preferred, or 3-5 years of industry experience...Hourly payTemporary workFor contractorsFor subcontractorWork at officeMonday to Friday- Dormont Manufacturing Co is seeking a Senior Process Engineer to own the development and qualification of semiconductor packaging processes. The candidate will lead R&D through production ramp, ensuring high-volume yields and process optimization. Responsibilities include...
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