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Constellation Energy

# Engineer, Sr Staff Mechanical

Kennett Square, Pennsylvania +10 more Full-time Senior individual contributor $151,200 to $168,000 Skilled Trades & Maintenance 

Listed on Constellation Energy’s official careers site. Posted August 24, 2026. Check that it is still open and apply there.
[Apply on Constellation Energy’s careers site →](https://careers-constellationenergy.icims.com/jobs/138179/login)

[OpenNash Jobs](https://jobs.opennash.com/) / [Constellation Energy](https://jobs.opennash.com/companies/constellation-energy/) / Engineer, Sr Staff Mechanical

## Job description

### Who We Are

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. Total Rewards Constellation offers an extensive selection of benefits and rewards to help our employees thrive professionally and personally.

We provide competitive compensation and a wide-range of benefits that support both employees and their families, helping them prepare for the future. In addition to highly competitive salaries, eligible employees are offered a bonus program, 401(k) with company match, employee stock purchase program; comprehensive medical, dental and vision benefits, including robust wellbeing programs; disability and life insurance benefits; paid time off for vacation, holidays, and sick days; and much more.

Expected salary range of $151,200 to $168,000, varies based on experience, along with comprehensive benefits package that includes bonus and 401(k). Primary Purpose of Position Performs advanced engineering problem solving in support of nuclear plant operations. Responsible for technical decisions. Possesses superior knowledge in functional discipline and its practical application and has excellent knowledge of applicable industry codes and regulations.

Functions with recognized industry-level of expertise in a technical area.

### Primary Duties and Accountabilities

Perform advanced nuclear engineering and technical tasks in support of nuclear plant operations. Perform independent research, reviews, studies and analyses in support of technical projects. Provides in-depth technical expertise to develop, manage and implement engineering activities related to plant safety, reliability, maintainability, and availability ensuring compliance to customer's needs, regulatory requirements, and corporate policies.

Accountable for the accuracy, completeness, and timeliness of work ensuring proper configuration management and assuring that standard design criteria, practices and codes are used in preparation of plans and specifications. Provide technical expertise and consultation through direct involvement to identify and resolve equipment and system problems. Provides initial or complete task management of engineering issues. Recommend equipment, new concepts and techniques to improve performance, simplify construction, reduce costs, correct design or material flaws, or comply with changes in codes or regulations.

Supports plant design modifications, testing and problem solving. Assure all engineering products prepared or overseen are in accordance with applicable safety analyses, industry codes, and all regulatory requirements. Develop, implement and coordinate functional supervisory activities including, but not limited to, personnel, budgetary accountabilities and planning goals with respect to engineering personnel. Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department.

### Minimum Qualifications

Bachelor's degree in Engineering (Chemical, Civil/Structural, Electrical, Industrial, Mechanical or Nuclear) with 10 years of engineering experience Demonstrated technical leadership experience (e.g. Duty team lead, inspection lead), teamwork and leadership attributes Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties

### Preferred Qualifications

Turbine experience HIGHLY Desired Professional Engineer Registration Advanced technical degree or coursework

## At a glance
- Posted by the employer: Aug 24, 2026
- First seen by OpenNash: Oct 11, 2026
- Last checked: Oct 18, 2026
- Listed for: 55 days
- Location: Kennett Square, Pennsylvania +10 more
- Employment type: Full-time
- Pay: $151,200 to $168,000[Apply on Constellation Energy’s careers site →](https://careers-constellationenergy.icims.com/jobs/138179/login)

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