Jobs in the United States

25+ jobs

Group jobs by employerEmail me new jobs Save this search

Added just now
Manager, Key Expert & Clinical Education Programs
Envista Holdings Corporation
Quakertown, PA
Coordinate plans, deliverables, faculty, content, promotion, lead capture, follow-up, and performance reviews for assigned partnerships.
Added just now
Ecosystem Sales, Integrated R&D
Certara USA, LLC
Wayne, PA
Added just now
Group Medical Director, US Medical Affairs, Prostate Cancer
J&J Family of Companies
Horsham, PA
Act as the primary contact for data generation initiatives, lead the development of the integrated evidence generation plan in response to emerging data and the changing competitive…
Added just now
Senior Manager, Health Care Compliance Officer
J&J Family of Companies
Horsham, PA
Lead or support risk assessments, risk-tiered oversight, and monitoring activities; analyze data to identify trends, inform mitigation strategies, and contribute to continuous improvement…
Added just now
Oncology Clinical Educator, Solid Tumors, Smoky Mountains region
J&J Family of Companies
Horsham, PA
…pathways and modalities to finding treatments and cures. We lead where medicine is going and need innovators with an unwavering commitment to…
Added just now
Senior Manager Technical Product Management
J&J Family of Companies
Horsham, PA
…and Sao Jose dos Campos, Brazil. This position is part of the Data Engineering and Enablement team within Data, Intelligence & Automation (DI&A) in Corporate Business Technology…
Added just now
Immunology Learning Portfolio Partner - Horsham, PA
J&J Family of Companies
Horsham, PA
Lead the development and continuous evolution of disease-state, product, competitive readiness, and scientific engagement curricula that support field medical and commercial field team…
Added just now
NOS Senior Auditor
Constellation
Delta, PA · Pottstown, PA
Audit Team Lead certification required within one year of assignment
Added just now
Associate Director, Commercial Development & Professional Relations
Mallinckrodt Pharmaceuticals
Malvern, PA
Added just now
BCBA- Behavior Health School Based
Devereux Advanced Behavioral Health
Malvern, PA
Schedule: 4 days per week in Malvern, PA and 1 day per week in Audubon, PA
Added just now
Senior Manager, Data & Analytics & Governance
Saint-Gobain
MALVERN, PA
- - -Lead the development and ongoing optimization of data governance policies, standards, and best practices aligned to business goals
Added just now
Finance Manager - TDS Cell & Gene Therapy
J&J Family of Companies
Malvern, PA
…gene therapy modalities. The Finance Manager will serve as the lead finance partner to the Global Head of TDS Cell & Gene Therapy and their leadership team, supporting an area of rapidly…
Added 1 min ago
S
IT Senior Manager, BI Data & Analytics
Saint-Gobain
MALVERN, PA
- $133,000 to $213,000 USD / year
We are seeking an experienced IT Senior Manager, BI Data & Analytics to lead the development and delivery of business intelligence, data visualization, and analytics solutions that…
Added 1 min ago
Scientist, Proteins, Analytical Development
J&J Family of Companies
Malvern, PA
Lead or facilitate technical discussions and participate in cross-functional teams at project-related meetings
Added 1 min ago
Director, Laboratory Automation
J&J Family of Companies
Malvern, PA
The Director, Laboratory Automation in Cell & Gene Therapy will lead a multidisciplinary organization responsible for defining and executing the automation strategy for analytical and…
Added 1 min ago
HH
Patient Care Technician I - Med/Surg - Canonsburg Hospital - Full Time
Highmark Health
Canonsburg, PA
- Full-time
This position requires 12-hour shifts
Added 1 min ago
HH
Patient Care Technician II - Inpatient Rehab - Canonsburg Hospital - Full Time
Highmark Health
Canonsburg, PA
- Full-time
This position requires 12-hour shifts
Added 1 min ago
HH
Patient Care Technician I - Med/Surg - Canonsburg Hospital - Part Time
Highmark Health
Canonsburg, PA
- Part-time
This position requires 12-hour shifts
Added 1 min ago
HH
Patient Care Technician I - Emergency Department - Canonsburg Hospital - Full Time
Highmark Health
Canonsburg, PA
- Full-time
This position requires 12-hour shifts
Added 1 min ago
HH
Patient Care Technician I - Inpatient Rehab - Canonsburg Hospital - Full Time
Highmark Health
Canonsburg, PA
- Full-time
This position requires 12-hour shifts
Added 1 min ago
Senior Environmental and Energy Engineer
CONCURRENT TECHNOLOGIES CORPORATION
Johnstown, PA
…objective. Key Responsibilities: - Environmental Sustainability 1. Lead the design and execution of strategies to reduce environmental impacts and promote sustainable practices. 2. Oversee…
Added 1 min ago
Senior Environmental and Energy Engineer
CONCURRENT TECHNOLOGIES CORPORATION
Johnstown, PA
…objective. Key Responsibilities: - Environmental Sustainability 1. Lead the design and execution of strategies to reduce environmental impacts and promote sustainable practices. 2. Oversee…
Added 1 min ago
Senior Environmental and Energy Engineer
CONCURRENT TECHNOLOGIES CORPORATION
Johnstown, PA
…objective. Key Responsibilities: - Environmental Sustainability 1. Lead the design and execution of strategies to reduce environmental impacts and promote sustainable practices. 2. Oversee…
Added 1 min ago
HH
Lead Medical Assistant - AHN Cancer Institute - Float - Full Time
Highmark Health
Butler, PA
- Full-time
As a member of the health care team, the Medical Assistant Lead provides clinical oversight and provides guidance at large multi-site practices. Oversees the remaining and onboarding…
Added 1 min ago
DA
Registered Nurse-Day Shift (Children's Residential)
Devereux Advanced Behavioral Health
West Chester, PA
- $40 to $45.6 USD / hour
…skills, mastery of Microsoft OfficeApplications, experience with data collection/analyzing platforms (Radar, Pro-Filer, and/or other internal and external softwareapplications pertinent to…

Radiant Industries

Lead, Test Engineering

El Segundo, CA, United States

$140,500 to $202,475 USD / year

Apply on jobs.ashbyhq.com About employer

Applications open in a new tab.

Job details

Pay: $140,500 to $202,475 USD / year
Experience: 8+ years of experience in testing, development, or validation of complex mechanical, thermal, or electromechanical systems.
Posting language: English
Posted: Nov 11, 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 Lead, Test Engineering to own the strategy, execution, and team leadership for testing Kaleidos hardware and systems. This is a hands-on technical leadership role: you will directly manage a team of test engineers and serve as the technical owner for multi-discipline testing across the program. This is not limited to thermal, materials, structural, mechanical, and special-process testing.

You will lead test development across our product and build our test site from the ground up. This infrastructure will support rapid design iteration in development, evaluating thermal performance, material behavior, structural and mechanical response, leak integrity, and system reliability, and then transition into architecting acceptance testing for production units. You will work closely with design, analysis, materials, manufacturing, quality, supply chain, and operations teams to ensure designs are validated, robust, and production-ready.

Responsibilities & Duties

Test Hardware & Infrastructure Development

Lead requirements definition, design, and implementation of Radiant’s test hardware, including test rigs, fixtures, instrumentation, data acquisition, controls, and support systems for components, subsystems, and integrated systems.
Build, commission, calibrate, and maintain test capabilities across thermal, materials, mechanical, structural, and leak/flow disciplines.
Establish operating procedures, safety controls, and facility readiness for high-energy, high-temperature, vacuum, pressurized, and hazardous-materials environments.
Define equipment specifications, manage vendor selection and procurement, and plan test space layout.
Work with quality to manage calibration programs, measurement traceability, and uncertainty analysis for all test equipment.

Test Strategy, Planning & Technical Ownership

Own and lead the test strategy across development, qualification, and production acceptance phases.
Define test objectives, plans, success criteria, instrumentation strategies, and data requirements for hardware and systems.
Serve as the technical authority for test methods, measurement quality, and data integrity.
Translate analytical predictions and design requirements into targeted test campaigns that validate assumptions and retire risk.
Balance test coverage, technical risk, schedule, and hardware availability to enable rapid iteration while maintaining safety and rigor.

Test Execution & Data Analysis

Plan and execute development, qualification, and acceptance tests, including functional, performance, environmental, transient, off-nominal, and endurance testing.
Operate test hardware hands-on with a strong emphasis on repeatability, data quality, and safety.
Analyze test data to assess system performance, thermal and mechanical behavior, and reliability.
Compare test results against analytical predictions and work with design teams to resolve discrepancies.
Collaborate with engineers to conduct root cause investigations, identify anomalies or failures, and implement corrective actions supported by test evidence.
Balance test coverage, technical risk, schedule, cost, and hardware availability to enable rapid iteration while maintaining safety and rigor.

Technical Leadership & Team Development

Provide technical leadership and mentorship to test engineers and technicians.
Act as a player-coach: remain hands-on while scaling testing capability, throughput, and organizational maturity.
Support hiring, onboarding, and technical development of test personnel.
Develop work estimates, test schedules, and status updates for program leadership.
Review and approve test procedures, reports, and data packages.
Establish standards for test documentation, data management, and knowledge capture.
Help mature Radiant’s test processes, labs, and safety culture over time including standards for test documentation, data management, configuration control, and knowledge capture.

Cross-Functional Collaboration

Partner closely with design and analysis engineers to ensure designs are testable and adequately validated.
Review component and system-level design documentation with an eye toward test coverage, instrumentation, and risk.
Collaborate with manufacturing, quality, and operations teams to support prototype, first-article, and production hardware testing.
Represent testing in design reviews, test readiness reviews, and technical leadership discussions.

Required Qualifications & Skills

Bachelor’s or Master’s degree in Mechanical Engineering or a related field, or equivalent experience.
8+ years of experience in testing, development, or validation of complex mechanical, thermal, or electromechanical systems.
Hands-on experience building and operating test setups for high-energy or high-temperature hardware.
Experience designing test instrumentation and data acquisition systems, and analyzing test data.
Experience with leak testing methods (helium leak detection, pressure decay) and flow/thermal test setups.
Experience correlating test results with analytical predictions and design intent.
Demonstrated technical leadership and ability to drive complex test efforts to completion.
Strong written, verbal, and organizational skills.

Desired Qualifications & Skills

Prior experience managing a team of test engineers or technicians.
Experience with test facility or test stand development from the ground up, including safety reviews and hazard analysis (e.g., JHA, HAZOP, FMEA).
Experience with hazardous-gas handling.
Experience testing rotating turbomachinery, heat exchangers, fluid systems, mechanisms, or controls.
Experience with structural test methods, including strain gauges, load cells, and test-to-FEA correlation.
Experience with data acquisition and analysis tools (e.g., LabVIEW, Python, MATLAB, Beckhoff hardware, PLCs).
Familiarity with relevant industry standards (API, ASME, ISO, ASTM) and measurement uncertainty practices (e.g., ISO 17025).
Experience with pressure vessel and pressure system testing and safety (e.g., ASME BPVC).
Experience in nuclear, aerospace, defense, or other regulated, high-reliability environments.
Startup or fast-paced hardware development experience.
Prior nuclear experience is not required.

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.

Apply on jobs.ashbyhq.com About employer

More about this job

Skills

Team leadership
Supply chain management
Test hardware
Procurement
Data analysis
Analyse test data
Perform system analysis
Collaborate with engineers
Leadership
Team building
Onboarding
Test procedures
Documentation
Data management
Collaboration
Mechanical engineering
Data acquisition systems
Organizational skills
Manage a team
FEA
LabVIEW
Python
The MathWorks MATLAB

Report this job

Work requirements

Jobs in the United States