• Radiant is seeking a Senior Manufacturing Engineer to help transition Kaleidos from a first-of-a-kind reactor build into a repeatable, scalable production system
• Own manufacturing and inspection processes for critical Kaleidos components, mechanisms, structures, and assemblies from design release through fabrication, integration, and final acceptance
• Partner closely with design engineers to drive design for manufacturability and assembly (DFM/DFA), influencing hardware 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 required to safely and repeatably build reactor hardware
• 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

Benefits

• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans
• Equity: Substantial incentive stock plan for all salaried employees
• Flexible PTO policy
• Vision: 100% coverage + 50% for dependents
• Dental: 100% coverage, orthodontia extra, 50% for dependent
• Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits
• Team-bonding company outings, happy hours and in-person camaraderie
• Beautiful El Segundo headquarters close to the Pacific Ocean

• Strong understanding of mechanical fabrication and assembly processes, including machining, joining, fastening, alignment, tolerance control, and inspection
• Experience troubleshooting manufacturing and assembly problems, performing root-cause analysis, and implementing corrective actions
• Strong ability to interpret engineering drawings, CAD models, specifications, and Geometric Dimensioning & Tolerancing (GD&T)
• 5+ years of experience manufacturing complex mechanical hardware in a production, development, or high-reliability engineering environment
• Experience working directly with technicians, machinists, fabricators, inspectors, and operators in a hands-on manufacturing environment
• Experience developing manufacturing documentation such as work instructions, process specifications, routings, and inspection plans
• Experience owning manufacturing processes from development through qualification and production implementation
• Strong written and verbal communication skills and the ability to work effectively across design, quality, test, supply chain, and operations teams
• Bachelor’s degree in mechanical engineering, manufacturing engineering, aerospace engineering, or a related technical discipline from an accredited institution
• Demonstrated experience partnering with design engineering to influence hardware through DFM/DFA
• Demonstrated ability to make practical engineering tradeoffs across manufacturability, quality, cost, schedule, performance, and risk
• Experience with process qualification, first article inspection, statistical process control, or production quality systems
• Must be willing to support extended hours and weekends when necessary to meet critical program milestones
• Must work 100% onsite at Radiant’s El Segundo headquarters
• Master’s degree in mechanical engineering, manufacturing engineering, or a related technical discipline
• Experience transitioning complex hardware from prototype or development builds into repeatable or scaled production
• Experience manufacturing highly engineered hardware in aerospace, energy, nuclear, automotive, defense, turbomachinery, or another high-reliability industry
• Experience with precision machining, mechanical joining, dimensional inspection, and non-destructive evaluation methods
• Experience with tolerance analysis and manufacturing or assembly strategies for tightly controlled interfaces
• Experience designing custom fixtures, tooling, assembly equipment, or other production hardware
• Experience with manufacturing automation, production equipment, or semi-automated assembly systems
• Experience developing suppliers for low-volume, high-complexity hardware
• Demonstrated ability to reduce part count, mass, assembly time, production complexity, or manufacturing cost without compromising product performance