Senior Build Engineer, Turbomachinery
Radiant Industries Inc. · El Segundo, CA · Manufacturing and hardware engineering · posted today
Radiant Industries Inc. · El Segundo, CA · posted 18 days ago
By AtiveSite · Published 07/11/2026 · Updated 09/11/2026 · Every figure is linked to its source below.
| Employer | Radiant Industries Inc. |
|---|---|
| Location | El Segundo, California |
| Field | Engineering, Construction and Energy › Manufacturing and hardware engineering |
| Level | not stated |
| Source category | Engineering, Electrical Engineering |
| Posted | 2026-10-22 (18 days ago) |
| Work arrangement | On-site at the location listed |
| Pay | Not published in the source listing |
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.
Radiant is seeking a Principal or Staff Electrical Engineer to define and lead the electrical architecture for Kaleidos, our commercial microreactor targeted for customer deployment in 2028. The work spans end-to-end PCB development, mixed-signal design, high-speed interfaces, power distribution, and signal integrity for the data acquisition, signal conditioning, and real-time processing that reactor control depends on.
You will lead custom hardware, set design standards, drive architecture decisions, and own high-reliability, low-noise board development from requirements through layout, bring-up, validation, and field deployment. You will also shape the hardware roadmap and guide the electrical team’s technical direction as we scale toward first commercial deployments.
Own the multilayer mixed-signal boards that control a fission reactor, terrestrial today with space applications ahead.
Define the system-level electrical architecture for mixed-signal systems: power distribution, analog front ends, and digital control interfaces.
Design, analyze, and simulate low-noise analog front ends and integrate them with ADC/DAC, DSP, and digital subsystems.
Own schematic capture, component selection, and layout, including high-speed and precision routing for sensor interfaces, data acquisition, and communication buses, with focus on signal integrity, power integrity, grounding, and EMI/EMC.
Bring up, debug, and validate hardware hands-on, and write and execute the qualification plans that prove performance, reliability, and environmental margin.
Work directly with firmware, FPGA, and DSP engineers at the hardware-software boundary, and with customers and interdisciplinary teams.
Lead design reviews, mentor the electrical team, and own hardware risk identification and mitigation.
Bachelor’s degree in Electrical Engineering or a related field.
8+ years designing custom multilayer and mixed-signal PCBs.
Experience shipping hardware you designed, with ownership across most of the lifecycle, from requirements through layout, bring-up, and qualification for production or field use.
Demonstrated experience setting electrical architecture direction and driving decisions across complex, multi-disciplinary programs and with customers.
System-level perspective across design analysis, fabrication, and testing.
DSP experience applied to data acquisition and real-time signal processing.
Circuit analysis and simulation experience (PSpice, LTspice).
Strong schematic capture and PCB layout experience (Altium Designer, Cadence, or similar), including component selection.
Strong command of signal integrity, power integrity, and grounding.
Analog and mixed-signal design experience, including sensor interfaces, ADC/DAC integration, and low-noise practices.
Familiarity with high-speed interfaces (SPI, I2C, UART, Ethernet) and their layout constraints.
Hands-on board bring-up, troubleshooting, and lab instrumentation (oscilloscopes, spectrum analyzers, VNAs).
EMI/EMC mitigation experience.
Experience designing for high-reliability or harsh environments (nuclear, aerospace, defense, or industrial).
Master’s degree in Electrical Engineering or a related field.
Radiation effects and radiation-tolerant electronics design.
Power electronics or power distribution design.
FPGA or embedded systems exposure supporting hardware/software co-design.
Nuclear instrumentation or detector interface electronics.
DFM, DFT, and production bring-up experience.
Must be willing to work extended hours and weekends as necessary to accomplish our mission.
Must work 100% onsite at El Segundo HQ.
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.
Field: Engineering, Construction and Energy Sub-niche: Manufacturing and hardware engineering All jobs at Radiant Industries Inc. Jobs in California Jobs in El Segundo, CA California state guide Pay for this occupation (BLS) All 252 open jobs for this occupation
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This is a — role in the Engineering, Construction and Energy field (Manufacturing and hardware engineering) at Radiant Industries Inc..
The closest occupation in the official wage statistics is Electrical engineers (a match by name, so treat it as an estimate). Nationally its median pay is $120,630 a year (BLS OEWS, May 2025), employment is projected to change by +9.9% between 2025 and 2035, and the typical entry route is: Bachelor's degree.
This is editorial guidance, not information from the employer.
Know your rights as a candidate and an employee:
El Segundo, CA is not one of the cities with its own page in our guides, so here is the state: California.
California is in the West region (Pacific division) and has 39,287,376 residents (the 1st largest of the 50 states and DC by population), with a median age of 37.9. Its economy produced about $4,438,822 million in the latest four quarters (BEA), 1st among states and DC, equal to $112,983 per resident.
The unemployment rate was 5.1% in 2026M09, which is 49th lowest of 51 (1st is the lowest). Employers had job openings equal to 3.6% of employment, 37th highest of 51, a measure of how hard it is to hire. The median wage across all occupations is $58,240 a year ($28.00 an hour), 14% above the national median ($58,240 against $50,980).
The occupations with the most jobs in California are Home Health and Personal Care Aides (970,150 jobs, median $34,320); Fast Food and Counter Workers (449,840 jobs, median $42,280); Retail Salespersons (376,460 jobs, median $38,440); Laborers and Freight, Stock, and Material Movers, Hand (355,500 jobs, median $44,710); Registered Nurses (338,940 jobs, median $140,270). Among occupations with at least 2,000 jobs, the best paid are Airline Pilots, Copilots, and Flight Engineers (median $353,900); Psychiatrists (median $353,500); General Internal Medicine Physicians (median $313,890). Compared with the nation, the state is most specialised in farming, fishing, and forestry (4.1 times the national share of workers) and healthcare support (1.5 times the national share of workers).
Prices are above the national average in California: the regional price parity is 110.7 against 100 for the whole country (51st lowest of 51). Median gross rent is $2,036 a month and the median household income $99,122, so a year of rent equals 24.6% of income; the median home value is $734,700. The state minimum wage is $16.90 (the higher of state and federal rates applies to most workers). State income tax on wages: Graduated, top rate 13.30%. It is not a right-to-work state, so union contracts can require fees from covered workers. It runs a state paid family and medical leave programme.
27.0% of residents were born abroad and 37.1% of adults hold a bachelor's degree or higher. Among workers, 65.7% drive alone, 2.9% use public transit and 17.2% work from home; 19.4% commute 45 minutes or more.
Places within 50 miles (straight line) of El Segundo, CA that have a guide, with what living there costs. The last-but-one column divides a year of rent by the median pay of the closest occupation ($120,630 a year), an estimate, not this employer's pay.
| Place ⇅ | Distance from the job city ⇅ | Median rent ⇅ | Median home value ⇅ | Median household income ⇅ | Commute 45+ min ⇅ | Rent as % of occupation pay ⇅ | Open jobs there ⇅ |
|---|---|---|---|---|---|---|---|
| Hawthorne, CA | 4 mi | $1,782 | $863,400 | $75,848 | 18.8% | 17.7% | Jobs |
| Inglewood, CA | 6 mi | $1,787 | $792,800 | $72,750 | 22.6% | 17.8% | — |
| Torrance, CA | 7 mi | $2,280 | $1,074,700 | $116,217 | 17.5% | 22.7% | Jobs |
| Los Angeles, CA | 8 mi | $1,933 | $921,200 | $81,939 | 22.2% | 19.2% | Jobs |
| Santa Monica, CA | 8 mi | $2,402 | $1,755,500 | $114,885 | 14.1% | 23.9% | Jobs |
| Carson, CA | 11 mi | $1,956 | $704,400 | $108,703 | 17.4% | 19.5% | — |
| Compton, CA | 11 mi | $1,664 | $580,200 | $78,465 | 19.2% | 16.6% | Jobs |
| South Gate, CA | 14 mi | $1,531 | $636,300 | $74,571 | 23.7% | 15.2% | — |
| East Los Angeles, CA | 17 mi | $1,494 | $643,100 | $68,741 | 21.9% | 14.9% | — |
| Downey, CA | 17 mi | $1,937 | $796,600 | $90,699 | 23.6% | 19.3% | — |
| Bellflower, CA | 17 mi | $1,830 | $705,700 | $78,722 | 20.3% | 18.2% | — |
| Long Beach, CA | 17 mi | $1,871 | $806,600 | $87,430 | 21.0% | 18.6% | Jobs |
| Lakewood, CA | 18 mi | $2,347 | $827,200 | $119,177 | 20.4% | 23.3% | — |
| Norwalk, CA | 20 mi | $2,090 | $644,700 | $100,085 | 21.9% | 20.8% | — |
| Burbank, CA | 20 mi | $2,192 | $1,089,100 | $97,082 | 16.6% | 21.8% | Jobs |
| Alhambra, CA | 20 mi | $1,939 | $857,800 | $88,024 | 23.0% | 19.3% | — |
| Glendale, CA | 21 mi | $2,182 | $1,102,300 | $88,393 | 16.9% | 21.7% | Jobs |
| Whittier, CA | 24 mi | $1,906 | $822,600 | $97,201 | 28.1% | 19.0% | — |
| Pasadena, CA | 24 mi | $2,265 | $1,093,300 | $105,192 | 18.3% | 22.5% | Jobs |
| Buena Park, CA | 24 mi | $2,206 | $838,800 | $110,550 | 20.9% | 21.9% | — |
Occupations close to Electrical engineers in the official classification, with pay, outlook and whether there are open jobs for them on this site right now.
| Occupation ⇅ | National median pay ⇅ | Growth 2025–35 ⇅ | Openings a year (US) ⇅ | Open jobs here ⇅ |
|---|---|---|---|---|
| Computer hardware engineers | $161,740 | +9.1% | 4,100 | none right now |
| Aerospace engineers | $134,960 | +8.3% | 3,800 | 6 open |
| Electronics engineers, except computer | $130,220 | +3.7% | 4,900 | none right now |
| Chemical engineers | $125,040 | +4.7% | 1,100 | 6 open |
| Civil engineers | $100,840 | +6.4% | 22,700 | 37 open |
How far El Segundo, CA is from the 20 largest US cities, in straight-line miles (not driving distance). Click a column to sort.
| From ⇅ | Straight-line distance (miles) ⇅ | Population of that city ⇅ |
|---|---|---|
| Los Angeles, CA | 8 mi | 3,857,263 |
| San Diego, CA | 106 mi | 1,389,526 |
| San Jose, CA | 302 mi | 990,138 |
| Phoenix, AZ | 365 mi | 1,642,323 |
| San Francisco, CA | 369 mi | 830,235 |
| Denver, CO | 850 mi | 718,877 |
| Seattle, WA | 969 mi | 754,195 |
| Oklahoma City, OK | 1,191 mi | 697,125 |
| San Antonio, TX | 1,208 mi | 1,479,835 |
| Fort Worth, TX | 1,217 mi | 963,194 |
| Austin, TX | 1,233 mi | 979,539 |
| Dallas, TX | 1,250 mi | 1,307,930 |
| Houston, TX | 1,379 mi | 2,328,253 |
| Chicago, IL | 1,753 mi | 2,711,226 |
| Indianapolis, IN | 1,820 mi | 885,860 |
| Columbus, OH | 1,988 mi | 914,802 |
| Charlotte, NC | 2,128 mi | 903,844 |
| Jacksonville, FL | 2,154 mi | 977,670 |
| Philadelphia, PA | 2,403 mi | 1,579,706 |
| New York, NY | 2,463 mi | 8,483,844 |
| City ⇅ | Straight-line distance ⇅ | Open jobs ⇅ |
|---|---|---|
| Culver City, CA | 7 mi | 8 |
| Los Angeles, CA | 8 mi | 734 |
| Compton, CA | 11 mi | 3 |
| Beverly Hills, CA | 12 mi | 4 |
| Huntington Park, CA | 13 mi | 2 |
| Encino, CA | 18 mi | 4 |
| Burbank, CA | 20 mi | 6 |
| Costa Mesa, CA | 34 mi | 20 |
| Newport Beach, CA | 38 mi | 2 |
| Anaheim, CA | 38 mi | 50 |
| Irvine, CA | 41 mi | 49 |
| Carlsbad, CA | 85 mi | 3 |
| Bakersfield, CA | 106 mi | 30 |
| San Diego, CA | 106 mi | 454 |
| El Cajon, CA | 114 mi | 1 |
Radiant Industries Inc. is the employer in this listing. See all its open jobs here →
We do not hold headcount or revenue for this employer. Check its careers site and, if it is listed on a stock exchange, its public filings (SEC EDGAR search).
What it is like to work at a company (culture, schedules, benefits) is not in the source data, so we do not describe it. Read the description and ask the questions under "How to prepare".
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A private-sector role in engineering, construction and energy (manufacturing and hardware engineering) listed 18 days ago. The full description is on this page and on the employer's page.
El Segundo, CA.
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The listing does not publish pay. For the closest occupation (Electrical engineers) the national median is $120,630 a year (BLS OEWS, May 2025).
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It was posted on 2026-10-22 (18 days ago). Jobs older than 90 days are not shown.
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