X-Energy
X-energy develops advanced nuclear reactors for clean, reliable energy production.
14 hours ago
$93,600 - $210,750
Entry-level, Experienced (8-12 years)
Full Time
Rockville, Maryland, United States
Onsite
Company Size
250 Employees
Service Specialisms
Sector Specialisms
Description
test planning
test execution
risk assessment
facility design
vendor oversight
instrumentation planning
The Test Engineer role oversees the planning, development, and execution of test activities for advanced reactor technologies. The position coordinates with system engineers to define testing requirements, manages the full test‑hardware lifecycle—from development and procurement to fabrication, installation, testing, and decommissioning—and documents and shares results across the organization. Work may be performed in an office setting, remotely, or in a designated laboratory, and the role may involve exposure to high temperatures, noise, vibrations, hazardous chemicals, and the need to lift at least 25 lb.
- Enact standard processes and best practices for technology maturation, test planning, and execution.
- Collaborate with system engineers to assess risks, identify testing needs, develop test plans/specifications, and oversee test activities.
- Support planning, design, and development of test facilities, equipment, and infrastructure.
- Provide technical oversight to vendors throughout the test lifecycle from concept to execution.
- Supervise internal and external testing activities to ensure technical and programmatic completeness.
- Conduct in‑person supervision of test setup, installation, commissioning, and execution.
- Maintain professional demeanor in all communications.
- Instrumentation & controls (I&C) planning, P&ID design, and component selection.
Requirements
hardware testing
doe planning
i&c setup
data acquisition
bsc engineering
p&id design
Candidates must hold a bachelor’s degree in mechanical, electrical, nuclear engineering, or a related field. Experience levels are defined as Level III (≈5 years), Level IV (≈10 years), and Level V (≈15 years) in test engineering, with advanced degrees (master’s or Ph.D.) or prior X‑energy performance able to substitute for part of the required experience. Hands‑on expertise in hardware development, testing, experimentation, and design‑of‑experiment planning is required.
Preferred qualifications include experience with instrumentation and controls planning, P&ID design, and component selection, as well as the ability to independently set up, implement, and troubleshoot I&C equipment for test assemblies. Candidates should be fluent in configuring and programming data acquisition systems and possess a broad background spanning mechanical, thermal, materials, and electrical wiring testing throughout the full technology development lifecycle.
- Hands‑on experience with hardware development, testing, and experimentation.
- Demonstrated expertise in design of experiment and test planning.
- Ability to independently set up, implement, and troubleshoot I&C equipment for test assemblies.
- Fluent in configuring and programming data acquisition systems.
- Broad background in mechanical, thermal, materials, and electrical wiring testing across the technology development lifecycle.
Benefits
The position offers a salary range that varies by level: Level III $93,600‑$156,000, Level IV $112,275‑$187,125, and Level V $126,450‑$210,750, adjusted for location and cost‑of‑living factors. X‑energy provides a comprehensive benefits package that includes a 401(k) plan with employer match, medical/dental/vision insurance, life and disability coverage, paid time off, and tuition reimbursement for professional development.
- Salary ranges: Level III $93,600‑$156,000; Level IV $112,275‑$187,125; Level V $126,450‑$210,750.
- Benefits include 401(k) with employer match, medical/dental/vision insurance, life & disability coverage, paid time off, and tuition reimbursement/professional development.
Training + Development
Interview process
Visa Sponsorship
Security clearance
Overview
- Founded with the mission to revolutionize the energy sector through advanced nuclear technology.
- Developers of the Xe-100, a high-temperature gas-cooled reactor designed for safety and efficiency.
- Focus on small modular reactors (SMRs) to provide sustainable energy solutions globally.
- Partners with leading utilities and organizations to design scalable, safe, and clean nuclear power plants.
- Secured significant investments to expand operations and bring their reactors to market.
- Driven by a commitment to meet global energy demands while minimizing environmental impact.
- Notable for their innovative reactor designs, which offer unparalleled safety features.
- Working to reshape the future of nuclear energy with cutting-edge technology and advanced engineering.
Culture + Values
50% Growth
Global Energy Growth
Global energy demand is expected to rise by 50% over the next 30 years, driven by population growth and economic development.
- We’re empowering Solar, wind and hydro are parts of the solution. Nuclear is the only pure base‑load, load‑following, highly scalable, locatable anywhere, stand‑alone or complementary solution. It's an integral piece of the puzzle.
- Zero Emissions: We believe in leaving a cleaner planet for our children and grandchildren, while continuing to provide sufficient and affordable power to sustain growing populations around the world.
- Clean Water: X‑energy’s core competencies in HTGR design and high‑temperature fuel design/manufacture makes a unique and compelling combination to apply our skills to Nuclear Thermal Propulsion.
- Space & Nuclear: The world is facing a pair of challenges … global energy demand is expected to rise by 50 % over the next 30 years. At the same time, we must significantly lower carbon emissions.
- Our technology relies on physics, not mechanical systems.
Environment + Sustainability
80 MWe
Power Output
Each Xe-100 reactor unit delivers 80 megawatts of electricity.
$1.1B
Total Funding
Raised from private capital and government grants for reactor and fuel commercialization.
440,000 t CO₂e
Annual Emissions Reduction
Reduction target achieved through partnership with Dow at the Seadrift site.
2030
Decarbonization Timeline
Target year for full emissions replacement at the Seadrift site.
- Building Generation IV Xe‑100 small modular reactors to enable carbon‑free baseload and load‑following power.
- DOE Advanced Reactor Demonstration Program selected X-energy in 2020 to deliver a four-unit Xe‑100 plant in Washington state.
- Working with Ontario Power Generation for industrial decarbonization via Xe‑100 deployment in Canada.
Inclusion & Diversity
- Publicly no specific DEI strategic goals, initiatives or metrics are disclosed.
- No gender-related statistics or workforce diversity data are available from official sources.