Mechanical Engineer, Plant Process Systems
Antora Energy
San Jose, CA · $154k–$185k a year · Posted October 10, 2026
Just laid off? Start here: a plan for the first weeks
See every open role at Antora Energy
More in California job market · All Mechanical Engineer jobs (676) · Energy & Utilities · Engineering jobs
More roles at Antora Energy
- Senior Process Engineer · San Jose, CA
- Project Finance Associate · San Jose, CA
- Senior / Staff Mechanical Engineer, Fluid Systems · San Jose, CA
- Sr. Project Manager, Interconnection Projects & Grid Infrastructure Delivery
- Principal, Power Procurement
- Senior / Staff Software Engineer, Cloud & Real Time Infrastructure · San Jose, CA
Similar jobs
- Sr. Specialist, Mechanical Engineer · L3HARRIS Technologies · Canoga Park, CA
- Specialist, Stress, Tools & Design Engineer · L3HARRIS Technologies · Canoga Park, CA
- Mechanical Engineer · Nucor · Fontana, CA
- Principal Product Engineer · Skyworks Solutions · Irvine, CA
- Staff RFIC Design Engineer · Skyworks Solutions · San Diego, CA
- Senior Product Engineer · James Hardie Industries · Fontana, CA
Where San Jose, CA ranks
Where San Jose, CA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best cities for marketing pay after cost of living$204k · of 16
- #1Best cities for aerospace and defense pay after cost of living$187k · of 19
- #2Best cities for security pay after cost of living$220k · of 10
- #3Best cities for technology pay after cost of living$205k · of 80
- #5Best cities for technology jobs1,449 openings · of 100
- #5Cities with the most jobs that do not need a four-year degree in the West Coast162 jobs · of 47
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
Pay compared with the market
This listing pays about $169,500 a year. Across 197 open mechanical engineer listings that state pay, the middle half runs $115,000 to $153,500 and the median is $132,500. That is 28% above the median, above the middle half of those listings.
Listed pay is what employers advertise, not what people are paid.
How AI is used in this kind of work
AI use among mechanical engineers is little observed so far. Measured exposure for mechanical engineers: 8% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
Skills this job asks for
Say which you have and which you want to build. We use it to match you to jobs like this one.
About the job
Antora Energy delivers affordable, reliable energy to industry, data centers, and the grid. Our thermal batteries turn low-cost electricity into always-on heat and power, without supply-constrained critical minerals or multi-year construction timelines.
We are growing our company with people who put team and mission first, value connection through laughter and joy, and work with humility and openness. We are committed to building a diverse, passionate, and creative team dedicated to a future powered by abundant, clean, low-cost energy.
Position Summary
Antora Energy is seeking a self-driven and passionate individual to join our engineering team to deliver zero-carbon industrial heat and power with our novel solid state thermal battery. We are a tight-knit team that loves what we do and we strive to have an impact, working with humility and openness while building lifelong relationships along the way. The Mechanical Engineer will scope, define, and design novel mechanical systems and components for balance-of-plant (BOP) process systems for Antora Energy’s thermal energy storage projects across test and commercial sites. You will be a key technical member of a cross-functional and rapidly growing organization. Your work will directly contribute to the testing and commercial deployment of an innovative long-duration energy storage technology.
You will be responsible for mechanical design of high-temperature heat transfer and process fluid systems — piping, pressure vessels, heat exchangers, and steam generation equipment — operating at elevated temperature and MW scale.
Roles & Responsibilities
Full lifecycle ownership of plant mechanical components and system
Develop detailed mechanical design for first of a kind pressure vessels, piping and process components, meeting critical performance, cost and scalability requirements.
Perform thermal-mechanical analysis of hot components: differential thermal expansion between coupled structures, creep, thermal cycling/fatigue, thermal shock, and insulation/heat-loss trade-offs.
Select valves, seals, instruments, and fittings for hot process fluid service (gas, liquid, or two-phase), including leak-tightness, material compatibility, and actuation at temperature.
Identify, develop and work with vendors enabling design execution
Create and implement test plans to validate performance, assembly and lifetime
Key Qualifications
Bachelors or equivalent in an engineering field (e.g. chemical, mechanical, industrial, etc.) and/or 4+ years’ experience in industrial applications engineering (oil & gas, chemicals, power plants, etc.)
Demonstrated experience solving novel engineering problems through commercial deployment
Experience with industrial mechanical equipment: Pressure Vessels, Pumps, Heat Exchangers, Air Coolers, Fans, Tanks, Piping, Valves.
Experience designing equipment for elevated-temperature service (>400 °C): materials selection, allowable evaluation, high-temp sealing.
Understanding of process-fluid hazards and their mechanical design implications (inert gas asphyxiation, hot fluid release, freeze/solidification, corrosion).
Working knowledge of piping and pressure vessel codes, including ASME BPVC, ASME B31, PED 2014/68/EU, CSA B51, etc
Additional Qualifications Desired
Deep engineering experience and intuition, ideally with background in:
Multi-wall, jacketed, trace-heated, or vacuum-insulated piping system experience
Familiar with concentrated solar, HRSG/boiler, nuclear primary systems, industrial furnaces, or cryogenic process equipment
Use of one or more of AutoCAD, Solidworks, COMSOL, ANSYS,
Holds a PE in one or more related disciplines
Work Location: Onsite - San Jose, CA
Salary Range: $154,000 - 185,000
Sala ry Basis: Annually
Please note that the salary range listed above reflects Antora Energy's estimated pay for this position. The actual salary offered will be within the posted range and determined based on several factors including but not limited to a candidate's experiences, credentials and expertise, as they pertain to the position's requirements.
In addition to a competitive base salary, Antora Energy’s Total Rewards program includes equity compensation in the form of stock options, a premium health benefits package with life and disability insurance, a 401K plan with employer contributions, flexible spending accounts, and an industry leading paid-time-off policy that features flexible and inclusive holiday observance, as well as paid volunteer time off.
#LI-Onsite
#LI-Onsite
When it comes to stopping climate change, we need everyone. We believe that having a diversity of backgrounds and experiences strengthens all of us, and we strive to create an environment where every one of us is empowered to create meaningful change.