Senior Mechanical Engineer – Utilities & Environmental Systems

Pfizer; Andover (MA); On-site; USD 99,000 - 165,000; Full time

Benefits offered by this job

401(k) matching

Retirement savings contribution

Paid vacation

Holiday and personal days

Parental leave

Medical, dental and vision benefits

Job summary

Pfizer is seeking a Senior Mechanical Engineer – Utilities & Environmental Systems to lead design, maintenance and optimization of plant utilities. You will manage HVAC, chillers, cooling towers, and related controls, delivering robust engineering solutions for pharmaceutical facilities.

You will develop basis-of-design documents, perform load calculations, and produce P&IDs and BAS control strategies, while coordinating with cross-functional teams to meet project objectives and regulatory

Qualifications

• Bachelor's or higher degree with required experience in pharmaceutical facilities maintenance.
• Strong knowledge of cGMP, FDA regulations and related industry standards.
• Ability to lead maintenance programs and work independently or in teams.
• Familiarity with preventive and predictive maintenance practices is essential.

Responsibilities

• Provide technical leadership for plant utilities and environmental systems including HVAC, chillers, and controls.
• Design and support HVAC/utility systems for pharmaceutical facilities; perform sizing and design intent documentation.
• Develop engineering deliverables including P&IDs, equipment layouts, and BAS philosophies.
• Lead multiple projects; coordinate with cross-functional teams and forecast resources.
• Ensure compliance with cGMP, safety regulations and support continuous maintenance improvements.

Skills

Preventive maintenance

Predictive maintenance

Process Safety Management

CMMS / EAM

cGMP knowledge

Teamwork / independent work

Project management (nice-to-have)

Education

Bachelor's degree with at least 4 years of experience

Master's degree with at least 2 years of experience

PhD with 0+ years of experience

Associate's degree with 8 years of experience

High school diploma and 10 years of relevant experience

Tools

CMMS software

BAS control systems

Job description

Why Patients Need You

Whether you are involved in the design and development of manufacturing processes for products or supporting maintenance and reliability, engineering is vital to making sure customers and patients have the medicines they need, when they need them. Working with our innovative engineering team, you'll help bring medicines to the world even faster by imagining what’s possible and taking action.

What You Will Achieve

Your technical skills will help us keep our plants, utility systems, buildings and equipment up and running. Pfizer relies on you for maintenance, redesign, and repair of utilities in our plants, such as electrical, plumbing, air conditioning, heating, and general maintenance.

You will be relied on to take the necessary preventive and corrective steps for setting priorities, forecasting and allocating resources in the maintenance tasks.

As a Senior Mechanical Engineer – Utilities & Environmental Systems, your breadth of knowledge on internal or external business challenges will help us improve our engineering products, processes and services.

You will manage projects by meeting objectives and preparing forecasts for resource requirements.

It is your dedication and focus that will make Pfizer ready to achieve new milestones and help patients across the globe.

How You Will Achieve It

Provide technical leadership and engineering solutions for plant utility and environmental systems, including HVAC, chillers, chilled water, cooling towers, steam, process glycol, heating hot water, freezers and cold rooms, fume hoods, biosafety cabinets, fire protection systems, BAS, and associated controls. Design and support HVAC and utility systems for pharmaceutical, biotech, manufacturing, and industrial facilities.

Develop conceptual and basis-of-design engineering solutions, including system selection, sizing, and design intent documentation. Perform airflow, temperature, humidity, and utility load calculations. Specify mechanical systems and materials, including ductwork, piping, pressure classes, equipment, instrumentation, and controls.

Design and support mechanical equipment such as chillers, cooling towers, custom and packaged AHU units, fans, pumps, heat exchangers, dehumidifiers, heat recovery systems, and exhaust systems. Develop engineering deliverables including airflow diagrams, pressurization and classification plans, P&IDs, equipment layouts, utility distribution drawings, and BAS control philosophies and sequences of operation.

Knowledge of Enterprise Asset Management Solution or other CMMS applications required. Provide construction administration and field support including drawing and submittal reviews, RFI responses, punch lists, startup, commissioning, and turnover.

Lead and manage multiple projects and work activities, coordinating with cross‑functional stakeholders and providing technical oversight through execution. Develop scopes of work, support change control activities, and update drawings, P&IDs, SOPs, and validation strategies as required.

Apply sound engineering judgment and innovative problem‑solving while ensuring compliance with cGMP, SOPs, safety, OSHA, and regulatory requirements.

Support operations through procedure development, training, preventive maintenance improvement, equipment evaluations, and Root Cause Failure Analysis. Promote a strong safety culture by adhering to site safety procedures and performing proactive safety assessments.

Qualifications Must-have

• Applicant must have a bachelor's degree with at least 4 years of experience
• OR a master's degree with at least 2 years of experience
• OR a PhD with 0+ years of experience
• OR as associate's degree with 8 years of experience
• OR a high school diploma (or equivalent) and 10 years of relevant experience Experience with preventive and predictive maintenance programs Knowledge of and ability to apply Process Safety Management elements Knowledge of Enterprise Asset Management Solution or other CMMS applications required Thorough knowledge and understanding of cGMP (current Good Manufacturing Practices), Food and Drug Administration, current pharmaceutical industry standards, and/or other regulations is preferred
• Be highly motivated, show initiative, and work well independently or in a team environment. Ability to shift priorities according to changes in departmental/facility needs and be open to different ideas/approaches
• Nice‑to‑Have Project Management experience

Other JOB DETAILS

Last Date to Apply for Job: October 9, 2026.

Referral Bonus Eligibility: YES

Work Location Assignment: On Premise

The annual base salary for this position ranges from $99,200.00 to $165,400.00. In addition, this position is eligible for participation in Pfizer’s Global Performance Plan with a bonus target of 12.5% of the base salary and eligibility to participate in our share based long term incentive program.

We offer comprehensive and generous benefits and programs to help our colleagues lead healthy lives and to support each of life’s moments. Benefits offered include a 401(k) plan with Pfizer Matching Contributions and an additional Pfizer Retirement Savings Contribution, paid vacation, holiday and personal days, paid caregiver/parental and medical leave, and health benefits to include medical, prescription drug, dental and vision coverage.

Learn more at Pfizer Candidate Site – U.S. Benefits | (uscandidates.mypfizerbenefits.com).

Pfizer compensation structures and benefit packages are aligned based on the location of hire. The United States salary range provided does not apply to Tampa, FL or any location outside of the United States. Relocation assistance may be available based on business needs and/or eligibility.

Candidates must be authorized to be employed in the U.S. by any employer. U.S. work visa sponsorship (such as TN, O-1, H-1B, etc.) is not available for this role now or in the future.

Sunshine Act Pfizer reports payments and other transfers of value to health care providers as required by federal and state transparency laws and implementing regulations. These laws and regulations require Pfizer to provide government agencies with information such as a health care provider’s name, address and the type of payments or other value received, generally for public disclosure.

Subject to further legal review and statutory or regulatory clarification, which Pfizer intends to pursue, reimbursement of recruiting expenses for licensed physicians may constitute a reportable transfer of value under the federal transparency law commonly known as the Sunshine Act. Therefore, if you are a licensed physician who incurs recruiting expenses as a result of interviewing with Pfizer that we pay or reimburse, your name, address and the amount of payments made currently will be reported to the government. If you have questions regarding this matter, please do not hesitate to contact your Talent Acquisition representative.

EEO & Employment Eligibility Pfizer is committed to equal opportunity in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, disability or veteran status. Pfizer also complies with all applicable national, state and local laws governing nondiscrimination in employment as well as work authorization and employment eligibility verification requirements of the Immigration and Nationality Act and IRCA.

Pfizer is an E-Verify employer. This position requires permanent work authorization in the United States.

Pfizer endeavors to make www.pfizer.com/careers accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process and/or interviewing, please email [e-mail]. This is to be used solely for accommodation requests with respect to the accessibility of our website, online application process and/or interviewing. Requests for any other reason will not be returned.

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Engineering Pfizer careers are like no other. In our culture of individual ownership, we believe in our ability to improve future healthcare, and potential to transform millions of lives. We’re looking for new talent to join our global community, to unearth new innovative therapies that make the world a healthier place.