Senior Mechanical Engineer (Sheet Metal Structures)

Radiant

$110K — $130K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Mechanical, Aeronautical, Civil, or Structural Engineering.
  • 6+ years of experience in structural design.
  • 4+ years performing stress analysis using hand calculations and finite element tools (Abaqus, Ansys, FEMAP, or similar).
  • Experience in design of multi-component assemblies in CAD (NX or similar).
  • Familiarity with thermal expansion issues in designs.

Responsibilities

  • Own the design of mass-efficient transportable shielding systems and other critical structures.
  • Conduct trade studies and create designs aligned with program requirements.
  • Perform detailed thermomechanical and dynamic analysis for structural integrity.
  • Develop manufacturing and assembly instructions alongside test plans.
  • Manage Bill-Of-Materials (BOM) and supplier development for components.
  • Oversee design, manufacturing, and test schedules for subassemblies.
  • Conduct risk analysis (FMEA) for subsystems.

Benefits

  • Substantial incentive stock plan for full-time employees.
  • 100% coverage up to base silver level medical plan, with 50% for dependents.
  • Sponsored memberships for One Medical for employees and dependents.
  • 100% top tier dental and vision plan coverage, with 50% for dependents.
  • 8-weeks of paid parental leave for all parents, plus additional pregnancy leave for CA employees.
  • Flexible PTO policy and remote workday allocation.
  • Daily catered lunch and free snacks.
  • Enjoy camaraderie through company bonding events and happy hours.
  • Beautiful location near the Pacific Ocean at El Segundo headquarters.
Full Job Description


About the Role

Radiant is seeking a highly motivated Senior Mechanical Engineer to design and develop critical structures within Kaleidos. You will solve unique challenges creating efficient and reliable structures that facilitate fission while surviving extreme temperature environments and meeting volumetric constraints. You will be responsible for the following: trade studies, material selection, detailed structural analysis, assembly, integration, and testing. You will have an instrumental impact of fueling the first new commercial reactor design in over 50 years by 2026.

Responsibilities & Duties:
  • Ownership of critical structures such as mass-efficient transportable shielding systems, container system, and high temperature graphite and metallic systems.
  • Conduct trade studies and develop designs to meet program requirements.
  • Perform detailed thermomechanical analysis (static strength, durability/fatigue) and dynamic analysis (vibration, shock) to determine structural integrity (margins of safety) using both hand calculations and finite element tools.
  • Develop and execute manufacturing/assembly instructions and test plans.
    • Create and manage a Bill-Of-Materials (BOM).
    • Find and develop suppliers for components.
  • Own subassembly design, manufacturing, and test schedules.
  • Own risk analysis (FMEA) for subsystems.
  • Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.

Required Qualifications & Skills:
  • Bachelor's degree from an accredited institution in Mechanical, Aeronautical, Civil or Structural Engineering.
  • 6+ years of experience designing structures.
  • 4+ years of experience performing stress analysis using both hand calculations and finite element tools (Abaqus, Ansys, FEMAP, or similar).

Desired Qualifications & Skills:
  • Experience with design of multi-component assemblies in CAD (NX or similar).
  • Experience designing hardware that was manufactured, deployed, and iteratively improved.
  • Experience resolving thermal expansion issues in designs.
  • Experience working with interdisciplinary teams.
  • Solid understanding and application of GD&T.
  • Proficiency with both "hand calc" analytical methods and higher fidelity finite element-based analysis methods.
  • Ability to derive free-body diagrams for systems with which one was not previously familiar.
  • Self-motivated with strong organizational, written, and oral communication skills.
  • Experience with using text-based software development tools.

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.
  • 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 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: [email protected].

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