Engineer, Mechanical Sr
$92.7k - $114kConstellation Energy
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.
***This Engineering role can be filled at the Entry, Mid-level or Senior Engineer level. Please see minimum qualifications list below for each level***
- Mid-Level - $92,700-114,000
- Sr Level - $122,400-154,000
Ranges are per year based on experience, along with a comprehensive benefits package that includes bonus and 401K
Primary Purpose of Position
Performs advanced technical/engineering problem solving in support of nuclear plant operations while acting as a resource and technical expert to engineers. Responsible for technical decisions. Possesses excellent knowledge in functional discipline and its practical application and has detailed knowledge of applicable industry codes and regulations.
Primary Duties and Accountabilities
- Provide in-depth technical expertise to develop, manage and implement engineering analysis, activities and programs.
- Provide technical expertise and consultation through direct involvement and as a subject matter expert when consulted to identify and resolve equipment and system problems
- Directly fulfill engineering and technical leadership accountability regarding short-term and long-term programs that impact site operations
- Perform engineering tasks as assigned by supervision applying engineering principles.
- Accountable for the accuracy, completeness, and timeliness of work ensuring proper configuration management and assuring that standard design criteria, practices, procedures and codes are used in preparation of plans and specifications.
- Perform independent research, reviews, studies and analyses in support of technical projects and programs.
- Recommends 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.
- 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 5 years of nuclear experience or related engineering experience
- Must meet additional requirements as outlined in ANSI/ANS-3.1-2014 Standard, "Selection, Qualification, and Training of Personnel for Nuclear Power Plants"
- Maintain minimum access requirement or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties
Preferred Qualifications
- Professional Engineer Registration
- Advanced technical degree or related coursework
$92.7k - $114k
...and sick days and much more. ***This Engineering role can be filled at the Entry, Mid-... ...level*** Mid-Level - $92,700-114,000 Sr Level - $122,400-154,000 Ranges are... ...Civil/Structural, Electrical, Industrial, Mechanical or Nuclear) with 5 years of nuclear...SeniorTemporary work$151.2k - $168k
...Engineer, Sr Staff / Mechanical or I & C 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...Senior$92.7k - $114k
...and sick days and much more. ***This Engineering role can be filled at the Mid-level or... ...Mid-Level - $92,700 - $114,000 Sr Level - $122,400- $154,000 Ranges are... ...civil/structural, electrical, industrial, mechanical or nuclear) with 2 years of nuclear or related...Suggested$98.87k - $128.58k
...Reporting to the Manager of New Product Development, the Sr Mechanical Designer is responsible for advanced CAD architecture, concept... ...strategies, and design standards using Creo, aligned with G&W Engineering CAD practices. Collaborate closely with Project Engineers...SeniorTemporary workFor contractorsLocal areaWorldwide$29 - $42 per hour
Prime Healthcare is seeking qualified candidates for a full-time healthcare engineering role in Joliet, Illinois. The ideal candidate will have robust experience in maintaining and repairing hospital equipment such as HVAC and plumbing systems. Responsibilities include...SeniorHourly payFull timeFlexible hoursNight shiftAfternoon shift$92.7k - $154k
A leading energy provider in Illinois seeks an Engineering professional to perform advanced technical problem-solving in nuclear plant operations. The position offers competitive salaries ranging from $92,700 to $154,000 per year, based on experience. Ideal candidates will...Senior$151.2k - $168k
Constellation is seeking engineers with extensive experience to support and enhance its nuclear fleet operations. This role involves advanced nuclear engineering tasks and ensuring compliance with safety standards. Applicants must hold a bachelor’s degree in engineering...Senior$87k
...Engineer, Mechanical or Electrical Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. We have been... ...Entry-Level - $87,000 Mid-Level - $92,700 - $114,000 Sr Level - $122,400- $154,000 Primary Purpose of Position...$57.5k - $71.9k
...knowledge and troubleshooting skills Ability to work independently and manage multiple tasks WE VALUE Associate's degree in engineering or a related field; Bachelor's degree preferred Experience with Honeywell products and systems Experience with conveyor...SeniorTemporary workWork experience placementFlexible hoursShift workNight shiftWeekend work$117.9k - $131k
...with comprehensive benefits package that includes bonus and 401(k). Primary Purpose of Position Performs advanced technical/engineering problem solving in support of Clean Energy Center (CEC) turbine generator operations. Responsible for technical decision making...Senior$88k - $125.6k
Nouryon is seeking a Reliability Engineer - Mechanical Integrity Focus in Morris, Illinois. This role involves developing maintenance strategies for fixed equipment and partnering with the Asset Integrity Coordinator to ensure plant reliability. Candidates should hold a...$50 - $60 per hour
DataAnnotation is committed to creating high-quality AI. Enjoy the flexibility of remote work and the freedom to set your own schedule. This is an opportunity to work with us as an independent contractor. We're currently expanding into an exciting new area – teaching...SeniorHourly payContract workFor contractorsWork experience placementRemote work$160k - $190k
...long-term business strategies, supervise regional sales teams, and ensure effective client interactions. A bachelor's degree in engineering or business is preferred alongside excellent negotiation and problem-solving skills. The position offers a competitive salary ranging...Senior$159k - $182k
...~1.5 years or more in a position equivalent to Reactor Operator (or Supervisor) at a military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor). Must have 1...SeniorHourly payTraineeshipRelocation packageShift work$46.83 - $80 per hour
A leading electrical services company in Minooka, Illinois, is seeking an experienced NETA IV Field Service Technician. This role involves traveling to client sites for inspecting and testing low to high voltage electrical systems. Candidates should have at least 5 years...SeniorHourly payNight shift$91.48k
...unmatched experience for both our clients and our team. As a global engineering and construction firm, we partner with clients worldwide to... ...tomorrow's demands. We're looking for a skilled Mechanical Engineer with expertise in HVAC and plumbing systems. This role...Full timeH1bWork at officeLocal areaRemote workWork from homeWorldwide$85k
...Sr. Credit Analyst – To $85K – Joliet, IL – Job # 3672B Who We Are The Symicor Group is a boutique talent acquisition firm based in Schaumburg, IL & Rockport, TX. Our nationally unique value proposition centers around providing the very best available banking...SeniorWork at office- ...and procedures, as appropriate for location QUALIFICATIONS: Refrigeration Certified Certified Material Handling Engineer Mechanic ASE Certification Understanding of Safety guidelines Able to read and understand blueprints and technical reference manuals...SeniorFor contractorsImmediate start
$95k - $158.4k
...Process Engineer Lead Date: May 19, 2026 Location: PATTERSON, CA, US, 95363-8871 GRESHAM, OR, US, 97030 MIRA LOMA, CA, US, 91752-1018 MINOOKA, IL, US, 60447-9998 Company: Grainger Businesses Work Location Type: Hybrid About Grainger W.W. Grainger, Inc.,...Full timeWorldwide3 days per week$107k - $160.5k
...Sr PM Major Projects Principal Duties and Responsibilities Employs project integration processes to effectively initiate... ...6 years technical experience or 9 years project/architectural-engineering/technical experience or Project Manager plus 2 years' experience...SeniorFor contractorsFlexible hours$95k - $106k
...for vacation, holidays, and sick days; and much more. ***This Engineering role can be filled at the Mid-level or Senior Engineer level. Please... ...that includes bonus and 401K. Mid-Level - $95,000 - $106,000 Sr Level - $128,000 - $143,000 Primary Purpose Of Position...Senior- ...PM) will act as the Owner's Representative for mission critical data center construction projects. PM will manage Owner's design/engineering, procurement, and construction contractors. PM's primary responsibilities include oversight of construction, project budget tracking...SeniorContract workFor contractorsWork experience placementWorldwide
$104k - $156k
Manager II, Process Engineer - Supply Chain Minooka, IL Position Summary Promotes and supports company policies, initiatives, procedures, mission, values, and standards of ethics and integrity. Leads process improvement tools and methods, such as 5S, root cause analysis...Temporary workWork at officeLocal area$30 - $50 per hour
Job Description Job Description ATTENTION ALL HVAC SERVICE TECHNICIANS AND INSTALLERS! Assurance Heating and Air Conditioning is pleased to offer outstanding career opportunities for residential and commercial HVAC Service Techs / Installers as we continue to grow...Hourly pay$30 - $38 per hour
...Pearce provides technical maintenance, repair, operations, and engineering services for uninterruptible power supply (UPS) systems,... ...systems (BESS), critical cooling systems, and other electrical and mechanical infrastructure across end markets such as renewable energy,...Hourly payDaily paidFull timeLocal areaRemote workFlexible hoursNight shiftWeekend work$91.48k
...Business Unit: TSU Job Description: CDM Smith is an engineering and construction firm delivering legendary service, smart solutions... ...HVAC master planning and studies, HVAC and plumbing systems, mechanical systems such as co-generation, and centralized energy systems...Full timeH1bLocal areaRelocation packageFlexible hours$130k - $140k
...Sr. Manager, Transportation Operations & Yield Management Odyssey Logistics is a global logistics and supply chain partner helping businesses optimize performance through fully integrated, end-to-end solutions. We connect transportation, technology, and expertise across...SeniorLocal areaRelocation package$135k - $182.7k
Description Our Senior Transportation Managers play a crucial role in exceeding expectations and providing a superb customer experience; critical to Amazon's success, which is built on a foundation of customer obsession, and innovation. This position is a multi-faceted...SeniorHourly payRelocationFlexible hoursNight shift- ...HSE, Technician Sr Location: Morris, IL, US, 60450 Facility: Morris Operations-... ...the HSE organization, plant management, engineering, and maintenance to continually enhance... ...with minimum supervision and safely ~ Mechanical skills to make minor repairs on equipment...SeniorFor contractorsShift work
- A global professional services company is seeking a Senior Cost Manager/Senior Quantity Surveyor to lead cost management for a major hyperscale data center development in Joliet, Illinois. You'll develop baseline budgets and guide procurement strategies while mentoring ...Senior
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Engineer, Mechanical Sr. Be the first to apply!
- senior performance engineer Minooka, IL
- senior application security Minooka, IL
- motorman
- mechanical hvac design engineer
- mechanical design engineer
- mechanical engineer consultant
- mechanical product design engineer
- principal mechanical design engineer
- mechanical design engineer creo
- mechanical design engineer work from home




