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Senior Mechanical Engineer Jobs in Puerto Rico (NOW HIRING)

Sargent & Lundy

PR · On-site

$101K - $134K/yr

Functional mechanical drawings and/or drawings for nuclear power plant systems * Engineering analyses and evaluations to support modifications and operation of plant systems * Technical ...

Quest Global

Mechanical Engineer

Aguadilla, PR · On-site

$50K - $60K/yr

Bachelor's degree in mechanical engineering or related field * 3+ years of experience in aerospace preferred, or in related field * Proficiency in CAD (SolidWorks, Creo, CATIA, or similar) * Strong ...

Quest Global

Mechanical Engineer

Aguadilla, PR · On-site

$50K - $60K/yr

Bachelor's degree in mechanical engineering or related field * 3+ years of experience in aerospace preferred, or in related field * Proficiency in CAD (SolidWorks, Creo, CATIA, or similar) * Strong ...

Acro Service Corporation

Be Seen First

Mechanical Engineer

Aguadilla, PR · On-site

$45 - $50/hr

Use of tools for estimating purposes when 3D model design is not possible including but not limited to aPriori, SEER-H, SEER-MFG. YOU MUST HAVE 3+ years' experience in engineering, mechanical ...

Sargent & Lundy

PR · On-site

While supporting project teams with other Mechanical Engineers, you will be involved in system engineering, including the design, modification, and analysis of power plant mechanical systems * There ...

Sargent & Lundy

PR · On-site

$107K - $130K/yr

Functional mechanical drawings and/or drawings for nuclear power plant systems * Engineering analyses and evaluations to support modifications and operation of plant systems * Technical ...

Kelly Services

PR

$45/hr

We're seeking a Sr Engineer to work at a premier pharmaceutical/biotechnology industry leader ... Bachelor degree in Engineering and 4 years of Engineering experience. (preferred Mechanical ...

Sargent & Lundy

PR · On-site

Senior-Level staff support engineering design projects with the following responsibilities ... Required Skills and Experience: * BS or MS in Mechanical Engineering, Engineering Mechanics ...

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Senior Mechanical Engineer information

What does a senior mechanical engineer do?

A senior mechanical engineer manages the research and manufacturing of mechanical devices and systems. Day to day responsibilities of a senior mechanical engineer include estimating manufacturing project costs and timelines, making recommendations on system efficiencies and safety, and performing general engineering duties such as the development and testing of machines. A senior mechanical engineer job is a leadership position and requires managerial experience and excellent communication skills.

What does a senior mechanical engineer do?

A Senior Mechanical Engineer is responsible for designing, developing, and overseeing the production of mechanical systems and devices. They lead engineering projects, solve complex technical problems, and may supervise junior engineers and other team members. Their work often involves using advanced software tools for modeling and analysis, ensuring compliance with industry standards, and communicating with clients and stakeholders. Senior Mechanical Engineers typically have several years of experience and play a key role in project planning and execution.

What is the difference between Senior Mechanical Engineer vs Mechanical Designer?

AspectSenior Mechanical EngineerMechanical Designer
Required CredentialsBachelor's or Master's in Mechanical Engineering, Professional Engineer (PE) license often preferredAssociate's or Bachelor's in Mechanical Engineering or related field, certifications vary
Work EnvironmentDesign, analysis, project management, often in engineering firms or manufacturingDrafting, CAD modeling, product development, typically in design departments
Employer & Industry UsageEngineering firms, manufacturing, aerospace, automotiveProduct design companies, manufacturing, engineering consultancies

While both roles involve mechanical design, Senior Mechanical Engineers focus on project oversight, analysis, and technical leadership, whereas Mechanical Designers primarily handle CAD modeling and drafting tasks. The senior role requires more advanced credentials and experience, often with broader responsibilities in project management and engineering decisions.

What are the key skills and qualifications needed to thrive as a senior mechanical engineer, and why are they important?

To thrive as a Senior Mechanical Engineer, you need a strong background in mechanical design, engineering analysis, and project management, usually supported by a bachelor's or master's degree in mechanical engineering and several years of industry experience. Proficiency with CAD software (such as SolidWorks or AutoCAD), FEA tools, and familiarity with relevant industry standards and certifications (like PE licensure) are typically required. Excellent problem-solving, leadership, and communication skills help you lead teams and collaborate effectively with cross-functional departments. These skills and qualifications are crucial for delivering innovative, reliable engineering solutions and successfully managing complex projects.

How does a senior mechanical engineer typically collaborate with cross-functional teams during a project?

As a Senior Mechanical Engineer, you’ll regularly work alongside professionals from disciplines such as electrical engineering, manufacturing, project management, and quality assurance. Effective collaboration involves participating in design reviews, aligning on technical requirements, and troubleshooting challenges that arise during development. You’ll often serve as a key technical liaison, ensuring that mechanical solutions integrate seamlessly with other systems and that project milestones are met on schedule. Strong communication and leadership skills are invaluable, as you’ll help guide both junior engineers and multidisciplinary teams toward shared goals.
More about Senior Mechanical Engineer jobs
What are the most commonly searched types of Mechanical Engineer jobs in Puerto Rico? The most popular types of Mechanical Engineer jobs in Puerto Rico are:
What are popular job titles related to Senior Mechanical Engineer jobs in Puerto Rico? For Senior Mechanical Engineer jobs in Puerto Rico, the most frequently searched job titles are:
What job categories do people searching Senior Mechanical Engineer jobs in Puerto Rico look for? The top searched job categories for Senior Mechanical Engineer jobs in Puerto Rico are:
What cities in Puerto Rico are hiring for Senior Mechanical Engineer jobs? Cities in Puerto Rico with the most Senior Mechanical Engineer job openings:
What are popular job titles related to Senior Mechanical Engineer jobs in PR? For Senior Mechanical Engineer jobs in PR, the most frequently searched job titles are:
Senior Mechanical Engineer jobs near you
Infographic showing various Senior Mechanical Engineer job openings in Puerto Rico as of August 2026, with employment types broken down into 87% Full Time, 8% Part Time, 2% Temporary, 2% Contract, and 1% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution.

Senior Mechanical Engineer 1 - Nuclear

Sargent & Lundy

PR • On-site

$101K - $134K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 21 days ago

Sargent & Lundy rating

8.4

Company rating: 8.4 out of 10

Based on 10 frontline employees who took The Breakroom Quiz

122nd of 447 rated engineering

Job description

Description
You will be involved in nuclear power plant systems design, including preparation or review of:
  • Modification packages for operating nuclear power plants
  • Functional mechanical drawings and/or drawings for nuclear power plant systems
  • Engineering analyses and evaluations to support modifications and operation of plant systems
  • Technical specifications and procurement documents for plant equipment
  • Vendor bid evaluations for plant equipment
  • Studies and options evaluations for modifications to operating nuclear power plants

In addition, you will have the opportunity to:
  • Develop engineering cost estimates for small to mid-sized client-requested work scopes
  • Visit client office and/or plant site locations to interface with the client and make presentations related to engineering tasks and status
  • Lead engineering project teams

This role offers a hybrid work arrangement, with the expectation of spending three days a week in the office, giving you the flexibility to work remotely for two days.
Dependent upon your location, this opportunity offers a generous relocation package.
Qualifications
We do not sponsor employees for work authorization in the U.S. for this position.
  • BS or MS in Mechanical Engineering or Chemical Engineering from an ABET accredited program
  • 5 or more years of experience in the nuclear power industry
  • Working knowledge of codes, standards, and regulations that apply to mechanical engineering design of nuclear power plants
  • PE license preferred, but not required
  • Must be bilingual in Spanish and English (speak, read, and write)

AI & Automation at Sargent & Lundy
In this role, we expect people to be willing or able to lead others who use modern tools:
  • You are expected to lead others in taking engineering problems from issue to solution by setting expectations for using data and modern tools such as automation and AI to improve workflows, reduce rework, and deliver cost-effective designs.
  • Leaders in these roles often direct automation and process-improvement work, for example, how teams automate calculations, summarize technical documents, or generate design documentation and guiding when and how AI or agentic AI tools are used while ensuring results are checked.
  • Overseeing engineers who program or script (e.g., Python, MATLAB, advanced Excel) to automate engineering tasks, with review of automated outputs, is valued but not required.
  • We also value additional learning, such as a minor, certificate, or other experience in Computer Science, Artificial Intelligence, Software Engineering, or related fields that enables effective oversight of automation and agentic AI-enabled engineering workflows.

Award-Winning Benefits
At Sargent & Lundy, we care about the health and well-being of our employees. Our commitment extends beyond the workplace, offering comprehensive healthcare plans and generous paid time off to support our team members in every aspect of their lives. We understand the importance of work-life balance, which is why we are proud to provide competitive, award-winning benefits. Our dedication to employee satisfaction has earned us the prestigious Top Workplaces Culture Excellence Award for compensation and benefits in 2022, 2023, and 2024.
Health & WellnessFinancial BenefitsWork-Life Balance
  • Health Plans: Medical, Dental, Vision
  • Life & Accident Insurance
  • Disability Coverage
  • Employee Assistance Program (EAP)
  • Back-Up Daycare
  • FSA & HSA
  • 401(k)
  • Pre-Tax Commuter Account
  • Merit Scholarship Program
  • Employee Discount Program
  • Corporate Charitable Giving Program
  • Tuition Assistance
  • First Professional Licensure Bonus
  • Employee Referral Bonus
  • Paid Annual Personal/Sick Time (PST)
  • Paid Vacation
  • Paid Holidays
  • Paid Parental Leave
  • Paid Bereavement Leave
  • Flexible Work Arrangements

About This Business Unit
Join Sargent & Lundy's Nuclear Power Group and be part of a team driving the future of clean, carbon-free energy. Since 1954, we've been a trusted leader in nuclear engineering, design, and licensing, with expertise spanning small modular reactors (SMRs), advanced reactor technology (ART), and first-of-a-kind commercial reactor restart projects. Our work supports life extensions and digital modernization of existing nuclear plants, coal-to-nuclear conversion initiatives with the Department of State, and international nuclear new-build projects. With a commitment to safety, innovation, and sustainability, we provide cutting-edge solutions that power communities worldwide while reducing emissions. Shape the future of global energy with us!
Equal Opportunity
Sargent & Lundy is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any protected status as defined by applicable law.

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About Sargent & Lundy

Sourced by ZipRecruiter

Sargent & Lundy is one of the most experienced full-service architect-engineering firms in the world. Founded in 1891, the firm is a global leader in power and energy with expertise in grid modernization, renewable energy, energy storage, nuclear power, and fossil fuels. Sargent & Lundy delivers comprehensive project services--from consulting, design and implementation to construction management, commissioning and operations/maintenance--with an emphasis on quality and safety. The firm serves public and private sector clients in the power and energy, gas distribution, industrial, and government sectors.

Industry

Civil engineering construction

Company size

1,001 - 5,000 Employees

Headquarters location

Chicago, IL, US

Year founded

1891

Social media

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