Jobs in the United States

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Head of Product, Atlas Software Platform
A-Alpha Bio
Seattle, WA
- $190,000 to $232,000 USD / year
Candidates must reside in the United States
Added 2 mins ago
Senior Calibration Software Engineer
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Software design and development of calibration and test software for our infrared sensing systems; also, development of production support software and systems. Participation in every phase…
Added 2 mins ago
Senior Embedded Software Engineer
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Goleta, CA
Software design and development of embedded software for infrared and sensing systems. Participation in every phase of a project: requirements review, software design and coding, unit…
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Application Engineer - Software & Controls
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To be considered for the Application Engineer- Software & Controls role, you must have the following minimum qualifications:
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Test Engineer
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Goleta, CA
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Principal AI Engineer/ AI Applied Scientist
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Remote, United States
As a Principal Applied AI Engineer on FICO’s Generative AI team, you will work at the frontier of language model applications, designing novel solutions that reach across the FICO platform,…
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Senior Electronics Test Engineer
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Must have the ability to obtain a SECRET clearance
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Radio Frequency Engineer
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Partner with multidisciplinary systems, software, and modeling teams.
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Electronics Test Engineer
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Must have the ability to obtain a SECRET clearance
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Software Engineer Senior Manager
SAIC
Remote, United States
Must possess an active Secret security clearance; US Citizenship required
Added 3 mins ago
Software Engineer
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Added 3 mins ago
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…scientific instruments and laboratory equipment. As Refrigeration Engineer (ULT), you will design, develop, and sustain cascade refrigeration systems supporting Thermo Fisher’s cold storage…
Added 4 mins ago
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Senior RF Engineer, Devices
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San Francisco, CA
- $195,000 to $210,000 USD / year
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Added 4 mins ago
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Systems Integration Engineer
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KS
Principal Systems Engineer
Kelly Services
Woburn, MA
- $116.33 USD / hour
Qualifications You Must Have
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Senior Network Engineer
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MAG Aerospace is recruiting for a Senior Network Engineer who will Architect and manage secure, scalable enterprise network infrastructure that connects business operations across cloud and…
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IT Engineer – Application Support
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You must possess the below minimum qualifications to be initially considered for this position
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Vice President – Full Java Stack Engineer
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Senior Forward Deployed Engineer (FDE Lead
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14+ years of software engineering and technical leadership experience, including ownership of production systems and large-scale delivery initiatives.
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Senior Vice President, Infrastructure Engineering (Mainframe Communications Systems Software Engineer
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(SVP) Senior Vice President, Infrastructure Engineering (Mainframe Communications Systems Software Engineer)
Added 6 mins ago
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Radiant Industries

Mechanical Engineer, Electrical Integration

El Segundo, CA, United States

$124,500 to $172,725 USD / year

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Job details

Pay: $124,500 to $172,725 USD / year
Posting language: English
Posted: Nov 10, 2026

Original job description

ABOUT RADIANT

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. The U.S. grid is under growing strain, with power demand accelerating, driving higher utility costs, rising carbon emissions, and interconnection backlogs. Radiant has a solution, transportable, on-site power. Our first reactor, Kaleidos, is 1 megawatt: small enough to be factory-built, transported by land, sea, or air, and deployed wherever power is needed. 1 MW can power 1000 homes for five years. Ship it back and we refuel for a 20 year operating life. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force and has signed pre-order agreements with Equinix, with deployments beginning in 2028.

ABOUT THE ROLE

Radiant is seeking a Mechanical Engineer to support the design and integration of electrical components and subsystems in a fast-paced startup environment. You’ll work alongside experienced mechanical and electrical engineers to solve challenging problems in packaging, thermal management, structural design, and system integration for advanced hardware. This role offers hands-on exposure to end-to-end hardware development from CAD and analysis through build, test, and validation.

RESPONSIBILITIES & DUTIES:

Support the mechanical design and ownership of electrical components and subsystems, including:
Mechanical design of electrical assemblies such as control panels, enclosures, brackets, mounts, and supports.
Cable and wiring harness routing, retention, strain relief, bend radius compliance, and serviceability considerations.
Packaging of sensors, actuators, connectors, and electrical hardware within constrained assemblies.
3D CAD modeling and 2D drawing creation using Siemens NX, including tolerance stack-ups and GD&T basics.
Perform first-order load calculations (static, shock, vibration) to support structural design decisions.
Conduct thermal analysis and heat-transfer assessments for electrical components, enclosures, and assemblies.
Support selection of materials, fasteners, and finishes appropriate for electrical, thermal, and environmental requirements.
Participate in system integration, troubleshooting, and validation activities alongside electrical and systems engineers.
Collect and interpret technical requirements and provide clear, constructive feedback across mechanical, electrical, software, and systems disciplines.
Perform trade studies and first-order analyses to evaluate design options and constraints.
Generate and maintain design documentation to support Design for Manufacturing (DFM), assembly, and serviceability.
Support subassembly design, coordinate with manufacturing, and assist with build and test schedules.

REQUIRED QUALIFICATIONS & SKILLS:

Bachelor’s degree in Mechanical Engineering or a closely related field from an accredited institution.
3+ Years of professional hands-on mechanical design experience.
Experience using Siemens NX or similar 3D CAD tools.
Familiarity with mechanical design of electrical assemblies, including enclosures, brackets, and harness routing principles.
Basic understanding of structural mechanics, load paths, and first-order stress calculations.
Knowledge of thermal analysis, heat transfer, and thermal management concepts.
Ability to read and create mechanical drawings, including dimensions and tolerances.
Strong communication skills and ability to collaborate in a multidisciplinary engineering environment

DESIRED QUALIFICATIONS & SKILLS:

5+ years of professional hands-on mechanical design experience.
Mechanical design for high-reliability or harsh environments (nuclear, aerospace, defense, or industrial), including thermal cycling, shock, vibration, or radiation exposure.
Experience with FEA or CFD tools for structural and thermal analysis beyond first-order hand calculations.
Hands-on experience supporting build, integration, and test on the floor, including design iteration based on manufacturing feedback.

ADDITIONAL REQUIREMENTS:

Must be willing to work extended hours and weekends as necessary to accomplish our mission.
Must work 100% onsite at El Segundo HQ.

BENEFITS AND PERKS

Stock: Substantial incentive stock plan for all full-time employees.
Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
One Medical: Sponsored memberships for employees and their dependents.
Vision: 100% top tier plan coverage + 50% for dependents.
Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
Nuclear Engineering Certificate Program: 100% covered educational program with Penn State University, for eligible employees, to rapidly upscale into nuclear.
Daily catered lunch. Free snacks and drinks.
Flexible PTO policy. Remote workday allocation.
Company and team-bonding events, happy hours and in-person camaraderie.
Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation and Benefits Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s full-time new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.

The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: recruiting@radiantnuclear.com.

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.

This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

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Jobs in the United States