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Constellation Energy · Middletown, California

# 2027 Geothermal Production Analytics Engineering Intern - Geysers

Middletown, California Full-time Early career Data & Analytics 

Listed on Constellation Energy’s official careers site. Posted October 28, 2026. Check that it is still open and apply there.
[Apply on Constellation Energy’s careers site →](https://careers-constellationenergy.icims.com/jobs/140400/login)

[OpenNash Jobs](https://jobs.opennash.com/) / [Constellation Energy](https://jobs.opennash.com/companies/constellation-energy/) / 2027 Geothermal Production Analytics Engineering Intern - Geysers

## Job description

As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities, with the generating capacity to power the equivalent of 27 million homes.

### Our culture and employee experience make it clear

We are powered by passion and purpose. Together, we're creating healthier communities and a cleaner planet, and our people are the driving force behind our success. At Constellation, you can build a fulfilling career with opportunities to learn, grow and make an impact. By doing our best work and meeting new challenges, we can accomplish great things. Join us in meeting the country's energy needs today and tomorrow. We are currently seeking highly motivated Reservoir Engineering students for Geothermal Projects Internships for 2027 to work in person at our location in Middletown, CA - Geysers.

These paid internships will last approximately 10 weeks starting June 7th, 2027 through August 13th, 2027. Interns will work on specific projects, designed to help them gain real-world, hands-on experience working independently under an assigned supervisor and technical mentor. The Reservoir Engineer Intern will provide assistance to the Geothermal Production Analytics team in analyzing production and injection data, developing data-management improvement recommendations, conducting reservoir and steam gathering system performance evaluations for optimum field development and building simulation models for field performance studies.

The above statements reflect the general details considered necessary to describe the essential functions of the job and are not to be construed as a detailed description of all the work requirements that may be inherent in the position.

### Job Requirements
- Candidate should have Junior standing or above working toward a Bachelor's degree or higher in Petroleum, Chemical, Mechanical, Civil, Electrical Engineering and other engineering or earth-sciences degrees are considered. Qualified candidate must be a student during duration of internship.
- Analytical/technical skills with a practical approach to problem solving
- Familiar with data-management systems (e.g. MySQL, SQLite, Microsoft SQL server, Microsoft Access, etc)
- Familiar with GIS applications
- Familiar with geological and reservoir engineering applications (e.g. GOCAD/SKUA, Petrel, Eclipse, VIP, Volsung, Tetrad, CMG STARS, TOUGH2, etc)
- Experience in programming languages (e.g. Fortran, C\C++, Python, etc).
- Legally authorized to work in the United States
- Intern must hold a valid driver’s license, and have the ability to drive mountainous roads.

## At a glance
- Posted by the employer: Oct 28, 2026
- First seen by OpenNash: Nov 1, 2026
- Last checked: Nov 1, 2026
- Listed for: 4 days
- Location: Middletown, California
- Employment type: Full-time[Apply on Constellation Energy’s careers site →](https://careers-constellationenergy.icims.com/jobs/140400/login)

## Hiring at Constellation Energy
- Open jobs: 341
- New in the last 7 days: After two weekly collections
- Tracked since: Jul 10, 2026

[All Constellation Energy jobs](https://jobs.opennash.com/companies/constellation-energy/) · [Weekly hiring report](/reports/hiring/)

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### [2027 Chemical Engineering Intern - Geysers](https://jobs.opennash.com/companies/constellation-energy/jobs/d6d0fb89f2b66dee38d0/)

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### [2027 Corrosion & Process Engineering Intern - Geysers](https://jobs.opennash.com/companies/constellation-energy/jobs/5b5625afd598fc797b8d/)

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### [2027 Environmental Intern - Geysers](https://jobs.opennash.com/companies/constellation-energy/jobs/f8f3b3e4da5f9bf8db6e/)

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### [2027 Geoscience Intern - Geysers](https://jobs.opennash.com/companies/constellation-energy/jobs/a4d38c349edda389b47d/)

Middletown, California

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