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Part Time Engineer Jobs in Puerto Rico (NOW HIRING)

PR

$10.25 - $13.25/hr

This is a part-time role, approximately 20 per week. Company Overview Founded in 1979, Lemartec is ... Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in ...

PR · On-site

$10.25 - $13.25/hr

This is a part-time role, approximately 20 per week. Company Overview Founded in 1979, Lemartec is ... Join one of the largest construction firms in the country (Engineering News-Record [ENR]: #1 in ...

JANITOR

Guayama, PR · On-site

$10.50/hr

We have an opening for part time JANITOR positions. * Location : Haleon - XV53+JM9, Guyama, PR ... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ...

JANITOR

Humacao, PR · On-site

$10.75/hr

Full and part time schedule. 2nd shift. More details upon interview. * Requirement : Janitorial ... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ...

JANITOR

Juncos, PR · On-site

$11/hr

Schedule : Full time and part time schedules. 1st, 2nd, and 3rd shifts available. Further details ... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ...

JANITOR

Arecibo, PR · On-site

$10.50/hr

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

FLOOR TECHNICIAN

Humacao, PR · On-site

$12.50/hr

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

LEAD JANITOR

Humacao, PR · On-site

$13.50/hr

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

LANDSCAPER I

Humacao, PR · On-site

$11.50/hr

... Engineering, Sustainability, Janitorial & Industrial Cleaning, Laboratory Support and Workplace ... Full-time and part-time positions offer the following benefits to associates: Associate Shopping ...

Showing results 21-40

Part Time Engineer information

How do part time engineers balance project responsibilities with limited working hours?

Part-time engineers often focus on specific project components or deliverables, allowing them to contribute effectively within their scheduled hours. Clear communication with supervisors and team members is essential to set realistic expectations and maintain progress. Many organizations use project management tools and regular check-ins to help part-time engineers stay aligned with full-time staff and meet deadlines. Flexibility and proactive planning are key to ensuring that work is completed efficiently without sacrificing quality.

What does a part time engineer do?

Part-time engineers develop and monitor the construction of the functional aspects of a product, structure, or system for their company or client. Unlike full-time engineers, part-time engineers typically work thirty hours or less a week. Specific job duties vary, depending on their specific engineering industry. For example, civil engineers design, construct, and maintain large infrastructure projects for municipalities and other agencies, such as bridges, highways, and airports. As the structures wear down, civil engineers reevaluate the needs of the area and may redesign the current structure or create a new system. Electrical engineers draft plans for electrical systems. Once the systems are created and installed, electrical engineers may also be responsible for maintaining the system to ensure it continues to run efficiently.

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

To thrive as a Part Time Engineer, you typically need a relevant engineering degree, foundational technical knowledge, and problem-solving skills. Familiarity with engineering software (such as AutoCAD, MATLAB, or SolidWorks) and industry-specific certifications or systems is often required. Strong time management, effective communication, and adaptability are crucial soft skills for balancing multiple projects and collaborating with teams on a flexible schedule. These skills ensure that part-time engineers can deliver high-quality work efficiently while meeting the dynamic needs of employers.

What is the difference between Part Time Engineer vs Contract Engineer?

AspectPart Time EngineerContract Engineer
CredentialsTypically requires relevant engineering degree and certificationsSimilar credentials, often with additional contractual agreements
Work EnvironmentUsually works on-site or remotely for multiple employers, flexible hoursWorks on specific projects for a set duration, often on-site
Employer UsageEmployers hire part-time for ongoing or intermittent tasksEmployers hire contractors for project-based work

Both Part Time Engineers and Contract Engineers share similar credentials and work environments, but differ mainly in employment structure and duration. Part Time Engineers typically work flexible hours for multiple employers, while Contract Engineers focus on specific projects for a fixed period.

What are the most commonly searched types of Engineer jobs in Puerto Rico?

The most popular types of Engineer jobs in Puerto Rico are:

What are popular job titles related to Part Time Engineer jobs in Puerto Rico?

For Part Time Engineer jobs in Puerto Rico, the most frequently searched job titles are:

What job categories do people searching Part Time Engineer jobs in Puerto Rico look for?

The top searched job categories for Part Time Engineer jobs in Puerto Rico are:

What cities in Puerto Rico are hiring for Part Time Engineer jobs?

Cities in Puerto Rico with the most Part Time Engineer job openings:

Infographic showing various Part Time Engineer job openings in Puerto Rico as of August 2026, with employment types broken down into 93% Full Time, 3% Part Time, and 4% Contract. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution.

$10.25 - $13.25/hr

Part-time

Re-posted 28 days ago


Key responsibilities

  • Process daily, weekly, and summary production reports for entry into accounting/payroll systems.

  • Perform data-entry duties, including verifying data and preparing materials for input and printing.

  • Create, update, and manage electronic project documentation and communication forms.


MasTec rating

7.4

Company rating: 7.4 out of 10

Based on 156 frontline employees who took The Breakroom Quiz

34th of 80 rated construction


Job description

Overview

Field Office Clerk will process daily, weekly, and summary production reports from employees and contractors for entry into the accounting/payroll systems; provide administrative support by performing data-entry duties, such as verifying data and preparing materials for input and printing. At a minimum, the position requires a good working knowledge of general office functions; proficiency with word processing and spreadsheet software, with an emphasis on Microsoft Office; the ability to use a computer and other office-related equipment; and the ability to read, understand, interpret, input, and analyze data. This is a part-time role, approximately 20 per week.

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 it to execute 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
  • The ability to work safely, with or without supervision

  • The ability to follow instructions and communicate verbally and in writing.

  • The ability to organize workload to determine the priority of duties.

  • Completion of low-level tasks in support of an assigned department/project.

  • Create, update, validate, and forward various forms of communication to internal and external recipients.

  • Create and manage the electronic job folder for the Project (Procore).

  • Read, interpret, and input data in support of an assigned department/project.

  • Create and maintain contact lists for each project.

  • Keep track of and organize all paperwork related to the job (both hard copies and digital backup documentation)

  • Ensure everyone on a project is signed in daily, including all personnel, general labor, and subcontractors, if applicable.

  • Assist the Superintendent/PFE with line-ups and ensure that the headcount of all personnel and General

  • Laborers match the Master Sign-In sheets and Daily Logs each day.

  • Work with the Superintendent/PFE to ensure all equipment and materials are being tracked properly and accounted for in the job file.

  • Assist with mobilization/demobilization efforts as well as Project Closeout.

  • Additional Duties as assigned.


Qualifications
  • Prior work-related experience preferred.
  • Proficient with office hardware and software. (PCs, Tablets, Printers, Copiers, Microsoft, Google, etc.)
  • Ability to learn new software and programs on both computers and other devices, such as smartphones.
  • Excellent Customer Service skills and strong English, both oral and written.
  • Authorized to work in the United States.
  • Successful completion of pre-employment drug screen, background, and motor vehicle record check.
  • Engineering or Accounting University Students with a GPA of at least 3.0 are highly encouraged to apply. 

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

Qualifications:
  • Prior work-related experience preferred.
  • Proficient with office hardware and software. (PCs, Tablets, Printers, Copiers, Microsoft, Google, etc.)
  • Ability to learn new software and programs on both computers and other devices, such as smartphones.
  • Excellent Customer Service skills and strong English, both oral and written.
  • Authorized to work in the United States.
  • Successful completion of pre-employment drug screen, background, and motor vehicle record check.
  • Engineering or Accounting University Students with a GPA of at least 3.0 are highly encouraged to apply. 

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

Education:UNAVAILABLEEmployment Type: PART_TIME

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