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Cold Fusion Developer Jobs in California (NOW HIRING)

Genmo

GPU Performance Engineer

San Francisco, CA · On-site

Optimize cold start latency from seconds to milliseconds for our serving infrastructure * Tune memory access patterns, kernel fusion, and GPU utilization * Collaborate with ML engineers to optimize ...

Genmo

GPU Performance Engineer

San Francisco, CA · On-site

Optimize cold start latency from seconds to milliseconds for our serving infrastructure * Tune memory access patterns, kernel fusion, and GPU utilization * Collaborate with ML engineers to optimize ...

Built Robotics Inc

Hardware Engineer

San Francisco, CA · On-site

$120K - $175K/yr

Our robots are subject to harsh conditions - hot summer days, cold and rainy winters, high ... Solidworks, Onshape, Fusion 360) * 2+ years of experience in electrical design * Familiarity with ...

Anduril Industries

Senior Thermal Engineer

Costa Mesa, CA · On-site

$146K - $194K/yr

... fusion, and networking technology to the military in months, not years. ABOUT THE TEAM The Thermal ... Define hot, cold, and any other edge cases that need to be analyzed based on industry standards and ...

Anduril Industries

Senior Thermal Engineer

Costa Mesa, CA

$146K - $194K/yr

... fusion, and networking technology to the military in months, not years. ABOUT THE TEAM The Thermal ... Define hot, cold, and any other edge cases that need to be analyzed based on industry standards and ...

Anduril Industries

Thermal Engineer, Space

Costa Mesa, CA · On-site

$129K - $171K/yr

... fusion, and networking technology to the military in months, not years. ABOUT THE TEAM Anduril ... Define and quantify hot, cold, and any other edge cases that drive the system. * Communicate pros ...

Anduril Industries

Thermal Engineer, Space

Costa Mesa, CA

$129K - $171K/yr

... fusion, and networking technology to the military in months, not years. ABOUT THE TEAM Anduril ... Define and quantify hot, cold, and any other edge cases that drive the system. * Communicate pros ...

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How much do cold fusion developer jobs pay per hour?

As of Jun 16, 2026, the average hourly pay for cold fusion developer in California is $52.91, according to ZipRecruiter salary data. Most workers in this role earn between $45.10 and $60.00 per hour, depending on experience, location, and employer.

What is a Cold Fusion Developer?

A Cold Fusion Developer is a software professional who specializes in building and maintaining web applications using Adobe ColdFusion, a rapid web application development platform. Their responsibilities include writing and optimizing CFML (ColdFusion Markup Language) code, integrating databases, troubleshooting application issues, and ensuring the security and performance of web applications. Cold Fusion Developers often work with other web technologies like HTML, JavaScript, and SQL. They may be involved in both front-end and back-end development tasks. This role is commonly found in organizations that have legacy ColdFusion systems or need rapid prototyping for web applications.

What are some common challenges Cold Fusion Developers face when maintaining legacy applications?

Cold Fusion Developers often encounter challenges such as outdated codebases, limited documentation, and integrating newer technologies with older Cold Fusion applications. Maintaining legacy systems can require troubleshooting compatibility issues and refactoring code to improve performance or security. Collaborating closely with stakeholders and other developers is essential to ensure smooth updates and minimal disruptions. Continuous learning and adaptability are key, as developers may need to transition parts of the application to modern frameworks over time.

What are the key skills and qualifications needed to thrive as a Cold Fusion Developer, and why are they important?

To thrive as a Cold Fusion Developer, you need strong skills in ColdFusion programming, web application development, and a background in computer science or a related field. Familiarity with databases like MySQL or SQL Server, source control systems such as Git, and experience with CFML frameworks like ColdBox are typically required. Attention to detail, problem-solving ability, and effective communication help developers deliver robust, maintainable code and work well with clients and teams. These skills are essential for building secure, scalable, and efficient web applications that meet business requirements.
What are the most commonly searched types of Cold Fusion Developer jobs in California? The most popular types of Cold Fusion Developer jobs in California are:
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What are popular job titles related to Cold Fusion Developer jobs in CA? For Cold Fusion Developer jobs in CA, the most frequently searched job titles are:
Cold Fusion Developer jobs near you
Infographic showing various Cold Fusion Developer job openings in California as of June 2026, with employment types broken down into 90% Full Time, and 10% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,047 per year, or $52.9 per hour.
Principal Mechanical Engineer

Principal Mechanical Engineer

Commonwealth Fusion Systems

Milpitas, CA • On-site

Full-time

Posted yesterday

Be an early applicant

Job description

About Commonwealth Fusion Systems: 

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers and suppliers to build the energy industry of the future. 

We’re in the best position to make it happen. Since 2018, we’ve raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team. 

If that’s you and this role fits, we want to hear from you.

Join the power movement as a Principal Mechanical Engineer
 

We’re looking for a Principal Mechanical Engineer to join our R&D and equipment design team to help build the next generation of thin-film deposition technology. You will be responsible for the end-to-end design, integration, and implementation of advanced thermal vacuum deposition systems and complex R&D machinery.

This role requires you to be a technical expert who can drive innovative architecture while maintaining the procedural discipline necessary for high-performance hardware. If you enjoy solving complex thermal-mechanical problems in vacuum environments and mentoring others in a collaborative, fast-paced setting, this is your opportunity to make an impact.

What you'll do:
  • Lead System Design: Drive the design, integration, and validation of advanced R&D equipment for thin-film processing
 
  • Define Requirements: Establish system-level requirements and innovative design concepts that directly correlate mechanical precision to final thin-film product quality
 
  • Standardize Best Practices: Implement and maintain engineering workflows, and best practices using semiconductor standards as your guide
 
  • Lead Design Reviews: Conduct rigorous reviews for overall mechanical systems and sub-systems, emphasizing manufacturability (DFx) and best practices for mechanical design
 
  • Collaborate & Interface: Generate and maintain critical interfaces with cross-functional teams, including scientists, vacuum specialists, and electrical engineers
 
  • Project Accountability: Report on project milestones to stakeholders, ensuring delivery of on-time and in-spec outcomes
 
  • Mentor Talent: Coach engineering staff on technical delivery, procedural discipline, and professional development
 
  • Get Things Done: Act with speed to drive projects from concept through assembly, testing, and implementation
What we’re looking for:
  • Education: Master’s degree in Mechanical Engineering or a related field (or equivalent industrial experience)
 
  • Experience: 15+ years of experience in the design and implementation of complex R&D systems or semiconductor manufacturing equipment
 
  • Thermal & Structural Expertise: Proven capability in high-temperature structural design and complex thermal management within vacuum environments
 
  • Vacuum System Proficiency: Deep understanding of vacuum architecture, including material outgassing, seal integrity, and pump-down optimization
 
  • Software Mastery: Expertise in 3D modeling (SolidWorks and/or NX) and FEA/Thermal simulation tools (COMSOL, ANSYS)
 
  • Hands-on Capability: Ability to bridge the gap between design and the shop floor, including experience with manual/CNC machining, prototyping, and hardware troubleshooting
 
  • Vendor Management: Experience selecting and qualifying global vendors for specialized components or custom sub-systems
 
  • Leadership: Demonstrated ability to lead effectively in both direct and matrixed organizational structures.
Bonus points for:
  • R2R Expertise: Experience designing or integrating roll-to-roll (R2R) systems for material processing
 
  • Semiconductor Background: Prior success building first-of-kind or experimental tools for semiconductor R&D or thin-film deposition
 
  • Standards Knowledge: Familiarity with SEMI, ASME, ASTM, and other industry-standard mechanical codes
 
  • Motion Control: Experience designing precision motion and motor-controlled systems within challenging environments
Must-have Requirements:
  • Ability to occasionally lift up to 50 lbs
  • Perform activities such as stooping, climbing, standing, or sitting for extended periods of time
  • Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
  • Willingness to travel or work required nights/weekends/on-call occasionally
Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:
•  Competitive compensation with equity
•  13 Company-wide Holidays
•  Flexible vacation days
•  10 sick days
•  Generous parental leave policy
•  Health, dental, and vision insurance
•  401(k) with employer matching
•  Professional growth opportunities
•  Team-building activities
#LI-Onsite
#CFS-EX

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.