Mechanical Engineer III
Listed on 2026-05-09
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Engineering
Environmental Engineer, Electrical Engineering, Mechanical Engineer, Engineering Design & Technologists
Mechanical Engineer III
Cornerstone Energy Services — Worcester, Massachusetts — Engineering
About this positionWe are looking for a Mechanical Engineer III to lead engineering efforts within our organization.
About Cornerstone Energy ServicesCornerstone Energy Services, Inc. specializes in engineering, survey, and land solutions for the energy infrastructure sector. From initial concept through project completion, we provide comprehensive services including civil, process, mechanical, and I&E engineering; project management; survey and mapping; and right-of-way acquisition.
We collaborate closely with developers and operators of oil and gas pipelines and electric transmission systems, supporting both extensive linear projects and site‑specific developments. Our work is guided by three core values:
- Safety – protecting the public, our clients, and our team
- Advocacy – prioritizing the best interests of our clients
- Integrity – upholding professionalism and accountability in every aspect of our operations
Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.
- Provide engineering leadership to a project or discipline.
- Maintain or set company standards for quality, production, efficiency, and public safety.
- Report findings and take necessary action to correct deficiencies.
- Design, draft, and/or plan proposed projects, review engineering reports and specifications for compliance and guidelines.
- Ensure the company remains current on the latest industry technology and uses the best tools for each application, making recommendations for improvements where necessary.
- Meticulously follow company quality procedures and utilize quality tools, recommending and creating additional tools to improve quality performance.
- Represent the company at job fairs and business development events, proactively maintaining client relationships.
- Act as primary business owner of contracts.
- Engage in long‑range tactical planning on multiple projects, including tracking and budgeting.
- Maintain compliance with applicable laws, regulations, and required permits; consult engineers on design modifications for projects, respond to inquiries concerning civil and engineering laws and practices.
- Act as a team leader by interviewing, recommending for hire, assigning, overseeing, reviewing work, and training new employees.
- Work with the Human Resources Coordinator to hire new engineering talent and conduct performance reviews with existing employees.
- Direct and supervise other engineer’s activities.
- Lead preparation of project proposals and participate in bid walks.
- Serve as a designated client contact.
- Exercise independent initiative and judgment in setting and implementing goals.
- Independently identify complex problems and devise optimal, innovative solutions.
- Although not the primary responsibility, the Engineer III may also perform responsibilities identified in the Engineer II job description.
- Perform other duties as assigned.
- Duties are performed in office and field settings.
- Office work may include prolonged seated tasks, extended keyboarding, and use of computer screens.
- Field settings may include work outdoors and on construction sites during all weather conditions.
- May be requested to work overtime and weekends.
- Position may require travel (up to 50%); a valid driver’s license and acceptable DMV record are required.
- Regularly required to stand, walk, use stairs, use hands, reach, talk and hear.
- Frequently lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds.
- Specific vision abilities required: close vision, distance vision, depth perception, and the ability to adjust focus.
Knowledge,
Skills and Abilities
- Consistently demonstrates high levels of mechanical engineering technical knowledge, ingenuity, and creativity.
- Advanced knowledge of mechanical engineering principles and practices and the ability to apply them.
- Proven experience in solving complex problems, identifying alternative solutions, and implementing recommendations to support goals.
- Ability to generate clear and effective proposals…
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