Torrance, California, United States · On-site
About Castelion Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies…
Skills: C++, C, Embedded Systems, Microcontrollers, RTOS
Torrance, California, United States · On-site
$110k–$140k/yr
Benefits: 401(k) 401(k) matching Bonus based on performance Company parties Competitive salary Dental insurance Free food & snacks Health insurance Opportunity for advancement Paid time off Profit sharing Training & deve…
Skills: Project Management, Budget Management, Contract Administration, Subcontractor Management, Cost Forecasting
Torrance, California, United States · On-site
$100k–$130k/yr
Benefits: 401(k) 401(k) matching Bonus based on performance Company parties Competitive salary Dental insurance Health insurance Opportunity for advancement Paid time off Profit sharing Training & development Vision insu…
Skills: Field Leadership, Project Scheduling, Subcontractor Coordination, Quality Control, Procore
Torrance, California, United States · On-site
$73k–$120k/yr
Who we are Neros is a defense technology company rebuilding America’s drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at …
Skills: FPV Drone Building, FPV Racing, Mentorship, Track Design, Part 107 Certification
Torrance, California, United States · On-site
$160k–$224k/yr
Who we are Neros is a defense technology company rebuilding America’s drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at …
Skills: Verification and Validation, EV/DV Testing, EMC/EMI Pre-compliance, Circuit Design, Python Scripting
Torrance, California, United States · On-site
$25/hr–$37/hr
Position Summary The Tool Maker will operate manual industrial equipment to manufacture and complete forming tools, and fixtures. Essential skills are working knowledge of tool room machinery, above average math abilitie…
Skills: Manual Machining, Blueprint Reading, MIG Welding, Precision Measurement, Tool And Die Making
Torrance, California, United States · On-site
$141k–$194k/yr
Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning t…
Skills: L-PBF alloy metallurgical evaluation, Microstructure characterization, Material qualification testing, Additive manufacturing, Metallurgy
Torrance, California, United States · On-site
Job Summary: To administrate and maintain calibration system complying to AS9100 and ISO 17025 for equipment, such as torque tools, oscilloscopes, RF antennas, force gages, thread gages among others. Updating calibration…
Skills: Metrology Administration, Mechanical Inspection, Electronics Inspection, Calibration System Management, ESD Verification
Torrance, California, United States · On-site
$65k–$85k/yr
Location: Torrance, CA (on-site) Job Type: Full-time Company Overview: Totex Manufacturing Inc. has been a pioneering force in the custom battery market since 1985. With over 35 years of experience, we specialize in prov…
Skills: Design Transfer, Process Validation, Equipment Setup, Continuous Improvement, Lean Manufacturing
Torrance, California, United States · Hybrid
$85k–$107k/yr
In this role, you will impact the advancement of manufacturing capabilities by leading initiatives that optimize manufacturing processes and integrate cutting-edge technologies. Your contributions will directly influence…
Skills: Manufacturing Process Development, Process Optimization, Cross-functional Team Leadership, Data Analysis, Project Management
Torrance, California, United States · On-site
$104k–$130k/yr
Join Our Relentless Pursuit of Excellence At Singer Vehicle Design, we believe Everything is Important. That’s why every nut, bolt, stitch, and finish matters when we restore and reimagine Porsche 911s into some of…
Skills: Catia V5, Mechanical Design, Powertrain Systems, CAD Drafting, Reverse Engineering
Torrance, California, United States · On-site
$31/hr–$57/hr
Divergent is a technology company that has architected, invented, built, and commercialized an end-to-end factory system called the Divergent Adaptive Production System (DAPS) that comprehensively uses machine learning t…
Skills: Additive Manufacturing, Process Design, Lean Manufacturing, Six Sigma, AS9100D
Torrance, California, United States · On-site
Deputy Program Engineer, Hypersonic Strike Castelion is rapidly developing and delivering advanced defense systems at a time when execution and technical excellence matter more than ever. We move fast, focus hard, and bu…
Skills: System Integration, Hardware Design, Project Management, Risk Evaluation, Test Strategy Development
Torrance, California, United States · On-site
$195k–$273k/yr
Who we are Neros is a defense technology company rebuilding America’s drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at …
Skills: Embedded C, MCU, RTOS, Embedded Linux, Bazel
Torrance, California, United States · On-site
$146k–$204k/yr
Who we are Neros is a defense technology company rebuilding America’s drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at …
Skills: Embedded C, PX4, Betaflight, Flight Control Algorithms, Sensor Fusion
Torrance, California, United States · On-site
$165k–$231k/yr
Who we are Neros is a defense technology company rebuilding America’s drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at …
Skills: Embedded Linux, Yocto, Buildroot, Kernel Development, Device Drivers
Torrance, California, United States · On-site
$115k–$140k/yr
What we’re building The marine industry supports recreation, global commerce, and national defense. And yet it runs on technology that hasn't meaningfully changed in fifty years. Until now. Arc is on a mission to electri…
Skills: Control Panel Design, Low Voltage Distribution, Zuken, EPLAN, AutoCAD Electrical
Torrance, California, United States · On-site
$77k–$106k/yr
A brief overview The QA Specialist II performs the day-to-day activities of the QA department to ensure drug substances manufactured by Bachem comply with FDA and international regulatory requirements for research, pre-c…
Skills: Quality Assurance, cGMP, FDA Regulations, Internal Auditing, Quality Management Systems
Torrance, California, United States · On-site
Why Castelion, Why Now Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantage…
Skills: Defensive Security Operations, Incident Response, Threat Hunting, SIEM, SOAR
Torrance, California, United States · Hybrid
$120k–$150k/yr
Join a company that's reintroducing itself to the aviation community we've helped advance for more than a century. At Honeywell Aerospace (NASDAQ: HONA), we're launching as an independent, publicly traded aerospace and d…
Skills: Supply Chain Management, Project Management, Procurement, Planning, Logistics
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Develop, test, and debug low-level firmware and device drivers for missile systems and flight hardware. Collaborate with cross-functional teams to perform hardware bring-up and hardware-in-the-loop validation.
Must be a U.S. Person pursuing a BS or MS in Computer Engineering, Electrical Engineering, or Computer Science. Requires strong C/C++ skills and experience with microcontrollers, SoCs, and common communication protocols.
Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.
Embedded Software Engineer Intern - Fall 2026
Castelion is seeking motivated and talented Embedded Software Engineering interns for Fall 2026. You'll help create the software that drives and simulates our missile systems, from low-level firmware on microcontrollers to high-level integration and testing tools. You'll work alongside experienced embedded, hardware, and flight systems engineers to design, implement, test, and debug real systems in the loop.
You wont be writing throwaway code; your contributions will directly support our rapid prototyping and real-world tests.
At Castelion, you'll be part of a mission-driven company where every project matters. Our interns don't just observe. They contribute meaningfully to the success of our programs. This is a unique opportunity to work at the cutting edge of aerospace engineering while developing the skills and experience that will help you grow into a future leader in the field.
Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
This internship is paid at an hourly rate of $30 per hour. Compensation may vary based on experience and education level. For non-local interns, housing or relocation stipends may be available to help offset temporary living expenses.
Modern Defense Production
Peace through Deterrence
Offices: Torrance, CA, US
There are currently 449 open engineering positions in Torrance, CA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Castelion, LISI GROUP, Neros Technologies, Honeywell Technologies, Stellant Systems, Inc., among others. Browse the listings above to see every active employer.
Yes — 51 of the 449 open engineering positions offer remote or hybrid work (6 remote, 45 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
