Mechanical Principal Engineer

About Cornerstone Energy Services

Cornerstone 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.

• 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

• Lead engineering‑related activities on one or more projects.
• Coordinate assigned activities with other job families.
• Manage the development and implementation of department goals, objectives, policies, and priorities.
• Work with Human Resources Coordinator to hire new engineering talent and conduct performance reviews.
• Select, train, motivate, evaluate assigned personnel; provide or coordinate staff training; implement discipline and termination procedures; guide less senior engineers toward licensure.
• Oversee and participate in development and administration of the department budget, approve forecasts and expenditures, and implement budgetary adjustments.
• Attend and participate in professional group meetings and committees, stay abreast of industry trends, contribute to industry white papers, and speak or teach at industry events.
• Participate in business development programs and initiatives, proactively seeking new opportunities and strengthening existing client relationships.
• Ensure engineering team follows company standards and procedures; follow quality procedures and utilize quality tools; lead improvement initiatives.
• Provide information, suggestions, advice, and technical assistance to city, county, district officials and programs by answering questions, interpreting laws and regulations, and resolving problems.
• Direct and supervise other engineers’ activities; when needed, perform responsibilities identified in the Engineer III job description.
• Perform other duties as assigned.
• Work in office and field settings; may work overtime, weekends, and travel up to 50%.

Applicants must be legally authorized to work in the United States on a full‑time basis for a non‑temporary role, without the need for employer‑sponsored work authorization now or in the future. Candidates qualifying for TN classification may apply but must secure and maintain their own work authorization. Reasonable accommodations may be made for persons with disabilities.

• Duties performed in office and field settings; office work includes prolonged seated tasks, extended keyboarding, computer screens; field work includes outdoor and construction site work in all weather conditions.
• Position may require travel up to 50%; requires valid driver’s license and acceptable DMV record.

• Regular standing, walking, using stairs, hands, reaching, talking, hearing.
• Frequently lift/move up to 10 pounds; occasionally lift/move up to 25 pounds.
• Specific vision abilities: close vision, distance vision, depth perception, ability to adjust focus.

• Consistently demonstrates high levels of mechanical engineering technical knowledge, ingenuity, and creativity.
• Expert knowledge of mechanical engineering principles and ability to apply them.
• Strong communication skills and ability to make decisions and find solutions to problems.
• Ability to balance multiple tasks, thrive in deadline‑driven environment, prioritize tasks, be flexible and adaptable to changing priorities.
• Excellent verbal communication skills, including public speaking.
• Bachelor’s degree in mechanical engineering and substantial professional development required.
• Master’s degree or PhD strongly preferred.
• Fifteen or more years of progressive engineering experience.
• Licensed Professional Engineer.
• Meaningful operations or construction experience required.

USD 126,000 – 189,630 per year (Worcester, MA; Plymouth, MA).