Senior Mechanical Designer Jobs in Puerto Rico (NOW HIRING)

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 clientand 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.

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)

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.

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

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!

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.