Senior Manufacturing Engineer — Scale Nuclear Reactor Hardware

Speedrun Talent Network; El Segundo, Northern (CA, KY); Hybrid; USD 120,000 - 210,000; Full time

Benefits offered by this job

Equity stock plan

Medical benefits

One Medical membership

Vision coverage

Dental coverage

Parental leave

Lunch provided

Flexible PTO

Remote workday option

Job summary

Radiant, an El Segundo, CA-based startup building portable nuclear microreactors, is seeking a Senior Manufacturing Engineer to scale Kaleidos from prototype to repeatable production.

You will own manufacturing processes for critical reactor components, collaborate with design, quality, and supply chain, and drive DF M/DFA to minimize mass, parts, and cost while maintaining safety and performance.

Qualifications

• Bachelor’s degree in mechanical, manufacturing, or aerospace engineering.
• 5+ years in production/manufacturing of complex hardware.
• Experience influencing hardware through DFM/DFA.
• Experience owning manufacturing processes from development to production.
• Strong GD&T, machining, joining, tolerance control.
• Ability to interpret drawings and CAD models.
• Experience documenting work instructions and inspection plans.
• Problem-solving with root-cause analysis.
• Able to collaborate with designers and suppliers.

Responsibilities

• Own manufacturing and inspection processes from design release through fabrication, integration, and final acceptance.
• Drive DFM/DFA with design engineers to reduce mass, part count, manufacturing complexity, assembly time, and production risk.
• Evaluate designs for manufacturability, inspectability, tolerance stack-up, tooling access, assembly sequence, subsystem integration, and final reactor assembly.
• Develop, qualify, document, and continuously improve manufacturing processes for complex mechanical hardware and integrated assemblies.
• Translate engineering drawings, CAD models, requirements, and specifications into manufacturing plans, work instructions, inspection strategies, tooling requirements, and production controls.
• Define fabrication and assembly approaches for new hardware, including process selection, sequencing, make-versus-buy decisions, and inspection methodology.
• Design and develop production tooling, fixtures, assembly aids, lifting equipment, and other manufacturing equipment.
• Partner with Quality and Test Engineering to establish inspection and acceptance strategies, resolve build and test issues, and incorporate lessons learned into future hardware and processes.
• Investigate manufacturing defects, nonconformances, and assembly issues using structured root-cause analysis and implement durable corrective actions.
• Identify, evaluate, and develop suppliers for critical components and manufacturing processes, working directly with suppliers to mature fabrication methods and resolve technical issues.
• Identify and implement capital equipment, machinery, and production infrastructure needed to support current builds and future production volumes.
• Support hands-on build, integration, and troubleshooting activities while identifying opportunities to improve repeatability, throughput, yield, labor content, and production scalability.

Skills

DFM

DFA

GD&T

CAD modeling

Manufacturing processes

Education

Bachelor’s degree in mechanical engineering

Master’s degree in mechanical/manufacturing engineering

Tools

CAD software

Measurement equipment

Job description

Radiant, an El Segundo, CA-based startup building portable nuclear microreactors, is seeking a Senior Manufacturing Engineer to scale Kaleidos from prototype to repeatable production.

You will own manufacturing processes for critical reactor components, collaborate with design, quality, and supply chain, and drive DF M/DFA to minimize mass, parts, and cost while maintaining safety and performance.