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Accounting Administrative Assistant Jobs in Puerto Rico

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

PR · On-site

$10.25 - $13.25/hr

... the accounting/payroll systems; provide administrative support by performing data-entry duties ... job file. * Assist with mobilization/demobilization efforts as well as Project Closeout.

Showing results 21-36

Accounting Administrative Assistant information

What does an accounting administrative assistant do?

As an accounting administrative assistant, your duties are to help process documents and manage accounts. In this role, you may perform various tasks related to billing and payroll, support vendor relations, reconcile accounting statements, answer telephones, file paperwork, and scan documents. This job is similar to other administrative assistant roles but also includes some minor accounting responsibilities, which may require more training. However, this is not an actual accountant job, though it can serve as training and experience if you want to become an accountant.

What are the key skills and qualifications needed to thrive as an accounting administrative assistant, and why are they important?

To thrive as an Accounting Administrative Assistant, you need a solid grasp of basic accounting principles, attention to detail, and proficiency in administrative tasks, often supported by a relevant associate degree or bookkeeping coursework. Familiarity with accounting software like QuickBooks, Microsoft Excel, and office management systems is typically required. Strong organizational skills, effective communication, and the ability to multitask help you excel in this role. These skills ensure accurate financial recordkeeping, efficient office operations, and reliable support for accounting teams.

What are some common challenges faced by accounting administrative assistants, and how can they be managed effectively?

Accounting Administrative Assistants often balance multiple tasks such as data entry, invoice processing, and managing communications between departments. A frequent challenge is handling tight deadlines, especially during end-of-month or end-of-year financial closings. Staying organized and prioritizing tasks, as well as maintaining clear communication with accountants and other team members, can help manage these challenges. Familiarity with accounting software and a proactive approach to problem-solving are also key to thriving in this role.

What is the difference between Accounting Administrative Assistant vs Bookkeeper?

AspectAccounting Administrative AssistantBookkeeper
CredentialsHigh school diploma; some roles may prefer associate degreeHigh school diploma; certification or associate degree beneficial
Work EnvironmentOffice setting, supporting accounting teamsOffice environment, managing financial records
Employer & Industry UsageCommon in corporate, small business, and nonprofit sectorsWidely used in small to medium businesses, accounting firms
Primary ResponsibilitiesAdministrative tasks, data entry, supporting accounting functionsRecording financial transactions, reconciling accounts

While both roles support financial operations, an Accounting Administrative Assistant focuses more on administrative and clerical tasks within the accounting department, whereas a Bookkeeper primarily manages and records financial transactions. The roles often overlap but differ in scope and focus.

What is the lowest position in accounting?

The lowest position in accounting is typically an accounting clerk or bookkeeper, responsible for basic tasks like data entry, invoice processing, and maintaining financial records. These roles often require minimal formal education and serve as entry points for advancing to higher accounting positions such as staff accountant or accountant.

What job categories do people searching Accounting Administrative Assistant jobs in Puerto Rico look for?

The top searched job categories for Accounting Administrative Assistant jobs in Puerto Rico are:

What cities in Puerto Rico are hiring for Accounting Administrative Assistant jobs?

Cities in Puerto Rico with the most Accounting Administrative Assistant job openings:

Infographic showing various Accounting Administrative Assistant job openings in Puerto Rico as of August 2026, with employment types broken down into 1% As Needed, 75% Full Time, 20% Part Time, 1% Temporary, and 3% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution.

$10.25 - $13.25/hr

Part-time

Re-posted 25 days ago


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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