ZipRecruiter

Log In

1

Contract Mechanical Engineer Jobs in Puerto Rico

Lemartec

PR · On-site

$88K - $119K/yr

... engineering, procurement, construction, start-up, performance testing, initial operations, and ... contract close-out. Experience working in the construction of Waste Water Treatment Plants ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR · On-site

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

Lemartec

PR

$88K - $119K/yr

Ensures that all Customer communications on the prime contract are documented, * Conducts periodic ... Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant ...

next page

Showing results 1-20

All JobsContract Mechanical Engineer JobsContract Mechanical Engineer Jobs in Puerto Rico

Contract Mechanical Engineer information

What Does a Contract Mechanical Engineer Do?

Contract mechanical engineers are independent contractors who work directly with their own clients on projects. You find these professionals in a broad range of industries, including robotics, medical devices, and manufacturing. As a contract mechanical engineer, you design a product or machine according to your client's specifications, analyze the blueprints to ensure they are accurate, test a model to identify any potential issues, and repair them as necessary. Your job duties typically involve the extensive usage of specialized computer programs, such as CAD for technical drawings. Depending on the project, you may collaborate with other engineers on different aspects of the plans to ensure they do not conflict with other parts of the project.

What are the key skills and qualifications needed to thrive as a Contract Mechanical Engineer, and why are they important?

To thrive as a Contract Mechanical Engineer, you need a solid background in mechanical engineering principles, problem-solving abilities, and a relevant engineering degree, often complemented by a Professional Engineer (PE) license. Familiarity with CAD software (such as SolidWorks or AutoCAD), finite element analysis tools, and project management systems is typically required. Strong communication, adaptability, and time management skills help you excel in diverse project environments and collaborate effectively with clients and teams. These skills and qualities are crucial for delivering high-quality engineering solutions on time and within budget in a contract-based setting.

What are Contract Mechanical Engineers?

Contract Mechanical Engineers are professionals who design, develop, and test mechanical devices and systems, but work on a contractual basis rather than as permanent employees. They may be hired for specific projects or periods by companies needing specialized expertise. Their responsibilities can include creating technical drawings, overseeing manufacturing processes, and ensuring products meet quality standards. Contract roles offer flexibility and variety in work, but may not provide the same benefits or job security as permanent positions.

What are some common challenges faced by Contract Mechanical Engineers when working on short-term projects?

Contract Mechanical Engineers often need to quickly adapt to new team dynamics and project requirements, as short-term assignments can vary widely in scope, tools, and expectations. They may face challenges such as limited onboarding time, integrating with established teams, and managing multiple projects simultaneously. Strong communication and organizational skills are essential to succeed, as contract engineers must rapidly build rapport with colleagues and deliver results within tight deadlines. Additionally, proactively seeking feedback and clarifying project goals early can help navigate these challenges and ensure project success.

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

AspectContract Mechanical EngineerContract Mechanical Designer
CredentialsBachelor's degree in Mechanical Engineering, possibly PE licenseBachelor's degree in Mechanical Design, CAD certifications often preferred
Work EnvironmentEngineering firms, manufacturing, product developmentDesign studios, manufacturing, product development
Employer & Industry UsageUsed across engineering and manufacturing sectorsCommon in design and product development sectors
Common Search & ComparisonOften compared for engineering roles involving analysis and designCompared for roles focused on detailed design and CAD work

Contract Mechanical Engineers focus on designing, analyzing, and testing mechanical systems, requiring engineering credentials. Contract Mechanical Designers primarily work on creating detailed CAD models and drawings, often with design certifications. Both roles are vital in manufacturing and product development, but they differ in scope and responsibilities.

More about Contract 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 Contract Mechanical Engineer jobs in Puerto Rico? For Contract Mechanical Engineer jobs in Puerto Rico, the most frequently searched job titles are:
What job categories do people searching Contract Mechanical Engineer jobs in Puerto Rico look for? The top searched job categories for Contract Mechanical Engineer jobs in Puerto Rico are:
Contract Mechanical Engineer jobs near you
Infographic showing various Contract Mechanical Engineer job openings in Puerto Rico as of July 2026, with employment types broken down into 54% Full Time, 18% Part Time, 1% Temporary, and 27% Contract. Highlights an 73% Physical, 2% Hybrid, and 25% Remote job distribution.
Project Manager - Mechanical Engineer - WWTP

Project Manager - Mechanical Engineer - WWTP

Lemartec

PR • On-site

$88K - $119K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Overview
The Lemartec Project Manager - WWTP is responsible for managing, leading, coordinating, and administering the project from the conceptual stages through planning, engineering, procurement, construction, start-up, performance testing, initial operations, and prime contract close-out. Experience working in the construction of Waste Water Treatment Plants, including portable water distribution and pumping. Also supports customer communications and presentations. Supervises the development of budgets and schedules, manages performance, reports progress, and initiates action to assure project objectives and schedules are met, and work is performed within budget and according to specifications.
Company Overview
Founded in 1979, Lemartec is a national general contractor and construction management firm and is part of the General Building group within MasTec's Clean Energy and Infrastructure segment.
As MasTec's vertical construction arm, Lemartec delivers complex projects across industrial, aviation, power, and large commercial markets. Led at the segment level by Manny García-Tuñón, the General Building Operating Group represents MasTec's vertical construction capabilities and serves as the platform for future growth in this space. As a MasTec company, Lemartec maintains international capabilities and strategic partnerships throughout the Americas and the Caribbean, enabling the execution of some of the most complex projects in the industries we serve. Through MasTec's network of more than 22,000 professionals and subject-matter experts in Engineering, Procurement, and Construction across more than 400 locations throughout North America and the Caribbean, Lemartec is uniquely positioned to serve a diverse customer base.
With experience across all 16 construction disciplines, Lemartec combines deep technical expertise with the strength, scale, and financial backing of MasTec to successfully deliver projects of any size and complexity.
MasTec's Clean Energy & Infrastructure (CE&I) segment generates over $4 billion in annual revenue, providing construction services across industrial, renewables, and infrastructure sectors. In infrastructure, we specialize in general heavy civil construction, underground utilities, structures, electrical work, material production, roadways, bridges, specialty pavement overlays, environmental projects, and commercial buildings. Sustainability and safety are foundational to our culture and influence everything we do.
MasTec, a minority-owned Fortune 500 company, has shaped the construction industry for more than 90 years. With over 35,000 employees and 400 offices nationwide, we provide flexibility and career growth in dynamic work environments. Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in Power, #17 Top 50 Domestic Heavy Contractors, #20 Transportation Contractor).
Responsibilities
  • Acts as the principal contact for the project scope of work with Customers and Lemartec management throughout the duration of the project.
  • Maintains contact with management personnel from suppliers, subcontractors, and governmental agencies as appropriate.
  • Maintains management-level relationships with other participating entities responsible for performing services in connection with the project, including organizations in the community.
  • Establishes an appropriate, integrated organizational structure, including off-project functional and specialist support.
  • Ensures scope, design basis, and objectives are defined; best practices/lessons learned are reviewed; and detailed work plans, schedules, budgets, and procedures are established, including the Project Execution Plan and Contract Management Plan.
  • Monitors and controls all contractual commitments to ensure that all work is being performed in accordance with the specifications, drawings, and terms of the contract, that a trend program is in place, and that change orders and claims are processed in a timely manner.
  • Implements and maintains a change management control system. Ensures that all Customer communications on the prime contract are documented,
  • Conducts periodic project and Customer meetings consistent with the project communications plan to promote and facilitate communication, review progress/performance, discuss issues, and facilitate problem resolution.

Qualifications
  • Work Experience and Education
    • Bachelor's degree in Architecture, Engineering, or Construction. An additional 5 years of relevant work experience in lieu of experience.
    • Minimum 10 Years of experience as a project manager overseeing commercial and industrial projects. Preferred 15+ years of experience.
    • Prior experience with wastewater treatment plant projects is required.
    • In-depth knowledge of all design disciplines, specifications, and drawings.

    Knowledge/Skills/Abilities
    • Familiarity with local specifications and supplements to each, and with reading blueprints
    • Proficiency in planning, scheduling, and production in P6, Microsoft Project, or equivalent software, and in the Microsoft Office suite (Excel/Word/Outlook), is also required, along with knowledge of estimating software.
    • Excellent organizational, presentation, and interpersonal skills.
    • High degree of professionalism and strong work ethic
    • Multi-task and stay focused on the big picture while addressing daily issues

    MUST HOLD A PE
    Position may be subject to pre-employment screening, which may include background check and drug testing. Accessibility: If you need accommodation as part of the employment process, contact ceicareers@mastec.com. Due to the high volume of applications received, we are unable to respond to individual requests regarding application status. Please log in to your candidate profile for up-to-date information.
    MasTec, Inc. is an Equal Employment Opportunity Employer. The Company's policy is not to unlawfully discriminate against any applicant or employee on the basis of race, color, sex, sexual orientation, gender identity, religion, national origin, age, disability, genetic information, military status, or any other consideration made unlawful by applicable federal, state, or local laws. The Company also prohibits harassment of applicants and employees based on any of these protected categories. It is also MasTec's policy to comply with all applicable state, federal, and local laws regarding the consideration of unemployment status when making hiring decisions.
    Disclaimer: MasTec and our Subsidiaries will never ask prospective employees for any form of payment or money transfer as part of a job application or onboarding. We do not ask prospective employees for information about credit cards or personal passwords, and we do not require applicants to purchase equipment or software. Ensure that all recruiter email addresses end in @mastec.com or @talent.icims.com. If you suspect you are the target of a scam, we advise you to contact your local law enforcement agency and report fraud at https://reportfraud.ftc.gov/
    MasTec Clean Energy & Infrastructure and our subsidiaries do not work with any third-party recruiters or agencies without a valid signed agreement and partnership with the Corporate Talent Acquisition Team.
    #LI-LV1
    #LI-ONSITE

Apply