Administrative Assistant
Saiia Construction Company LLC, a MasTec Company
Administrative Assistant
MasTec Utility Services delivers critical infrastructure construction and engineering services for power delivery, gas, and water customers, specializing in overhead and underground electric distribution for power delivery systems, gas distribution construction for gas systems, and turnkey solutions for a variety of water, sewer, and civil infrastructure projects. Backed by the strength of decades of experience, unrivaled industry skills, and a deep commitment to core values, MUS delivers safe, innovative, and environmentally responsible services that provide extraordinary value to clients. MasTec Utility Services is a purpose-driven company. Our core values guide our strategy, performance, and culture. We believe in maintaining an environment where team members can make an impact, grow, and thrive. A place where they find meaning and purpose in doing the important work of ensuring communities have the vital energy, light, and communications to prosper. Our culture is inclusive and welcoming. Our teams are empowered with abundant training, tools, and opportunities to follow their curiosity and ambitions. Everyone has an equal chance to advance. Everyone is supported, respected, and challenged to be their best. We're always looking for talented and dedicated people to join us and love where they work.
The Administrative Assistant will provide administrative and general office support to the site and regional operations. The Administrative Assistant directly impacts business operations by providing efficient and effective support directly to the field. The Administrative Assistant will act as the primary point of contact for site personnel, Operations Managers, and Regional Support Managers.
Responsibilities:
- Establish and maintain a filing system, ensuring documentation/information is current and can be readily retrieved.
- Assist with external and internal vendor relations, including but not limited to, payment of invoices, new vendor setup, and resolution of any vendor issues.
- Handle incoming calls, emails, and company related correspondence daily, including customer inquiries and complaints, routing inquiries/requests to appropriate individual/department for response, following up and providing any coordination necessary to ensure response occurs in timely, efficient manner.
- Assist customers with immediate needs and help employees with tasks related to customer requests.
- Track paperwork, process new work/projects, change the status of work/projects, complete CUs, create invoices for all jobs and keep a detailed record of start and end dates in a separate log.
- Organize and coordinate staff and other meetings, including preparing materials pertaining to agenda items, following up with staff members regarding status of action items, etc.
- Respond timely to requests from Resource Management and Field Operations.
- Keep site bulletin boards updated and neatly organized with company newsletters, safety bingo, daily scorecards, federal posters, workers compensation information, etc.
- Attend crew meetings as needed to collect documents, communicate information, and respond to inquiries.
- Maintain safe work environment by following and supporting safe practices.
- Prepare and submit expense reports weekly in accordance with company policy, including for traveling technicians and new hires.
- Receive payroll timesheets and input in a timely fashion to ensure employees get paid on time.
- Assist/provide backup support to other office support employees as required.
- Coordinate special projects as assigned.
- Perform other duties as required and/or assigned.
- Assist and support field management on projects and daily business needs.
Qualifications:
Minimum Qualifications:
- A High School Diploma, or equivalent.
- Knowledge of Miss Utility required.
- 1 year of related clerical or administrative experience related to work orders and invoice processing.
- Abilities to perform duties associated with scheduling, prioritizing work orders, and payroll.
- Strong organizational skills with high attention to detail and quality of work.
- Ability to work under pressure to meet deadlines in a fast-paced, dynamic environment while managing multiple tasks.
- Ability to establish and maintain strong relationships and deliver exceptional customer service experience to both internal and external customers.
- Ability to effectively take action to solve problems while exhibiting sound judgement.
- Excellent written and verbal communication skills.
- Ability to be results-oriented, taking initiative to make things happen, accept accountability, and have a "can do" attitude.
- Advanced proficiency in Microsoft Office applications.
- Must be proficient in Excel.
Preferred Qualifications:
- An Associate Degree in Business Management or similar discipline.
- Ability to read a map for Miss Utility tickets.
- Experience in a construction or project environment.
- Very strong background in Microsoft Excel.
Physical Demands and Work Environment:
This job operates in a professional office environment. This role routinely uses standard office equipment such as computers, phones, copiers, and scanners. The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. This position is primarily sedentary, with some filing or lifting required. Must be able to bend and lift and carry up to 20 pounds.
Benefits available include Medical, Dental, Vision, Disability and Life insurance, a 401k plan and Employee Stock Purchase plan. MasTec is a publicly traded company MTZ (NYSE). Equal Employment Opportunity: The Company's policy is not to unlawfully discriminate against any applicant or employee based on race, color, national origin, ethnicity, sex, gender, sexual orientation, religion, marital status, age, disability, genetic information, military or veteran status, or any other basis protected by applicable law and EEOC regulations. The Company also prohibits harassment of applicants or employees based on any of these protected categories.
- ...Req Name: Administrative Assistant 4 - CW Client: Lam Research Corporation Start: 03/30/2026 End: 03/24/2028 Description: Department: NA MICRON FIELD SERVICE Job Category: Administrative Job Title: Administrative Assistant 4 - CW Pay...SuggestedWork at office
- ...collaborative, and client-centered, offering opportunities to support meaningful, impact-driven work. Role Description The Administrative Assistant role is a full-time hybrid position based in Centreville, VA, with some work-from-home flexibility. In this role, the...SuggestedFull timeWork at officeWork from home
$20 - $26.44 per hour
...Administrative Assistant (5762) Location Manassas, VA Job Code 5762 # of Openings 1 Apply Now ( OLH Technical Services, LLC, a government contracting industry leader, is seeking an Administrative Assistant to join our Team. This position is located in Manassas...SuggestedHourly payContract workFor contractorsWork at officeLocal area- ...Administrative Assistant Assist the Executive Director, Director for Operations, Human Resources Director, and Managers with various administrative tasks in order to maintain the program. Answer telephone calls and direct them to the proper program/person and take...SuggestedWork at office
- Kforce has a client that is seeking an Administrative Assistant in Manassas, VA. Summary: The Administrative Assistant will provide administrative, accounting, payroll, and HR support for a commercial construction organization. This position will work closely with project...SuggestedTemporary workFor subcontractorWork at office
- Why You Want To Work HereWe are seeking an organized, detail-oriented Administrative Assistant to provide administrative and operational support for a growing team in Manassas. This is a great opportunity for someone who enjoys a variety of responsibilities and wants to...Work at officeMonday to Friday
- ...Job Description Job Description Federal contractor in Chantilly, Virginia looking for an Administrative Assistant . Must be personable and enthusiastic with excellent customer service skills. Must be dependable and comfortable working independently. Duties include...For contractorsWork at office
- Job Description Job Description Arranging staff meetings and scheduling appointments Answering or transferring phone calls and taking messages for select staff members Maintaining party booking system and office calendars Writing memos, correspondence, invoices...Work at office
- Hambleton Handyman Administrative AssistantHambleton Handyman is looking for a meticulous administrative assistant. You are likely to thrive in this position if you:Have passionate attention to detail and a strong love of accuracy.Have good time management skills and are...Work at officeWork from home
- .... Prepare orders for batch invoicing and balance payments in the system at the end of each day. Assist the purchasing team with orders and provide administrative support as needed. Support outside sales representatives with day to day sales activities. Work...Full timeWork at officeLocal areaFlexible hours
$17 per hour
...government agency serving a large Northern Virginia community, focused on accessible, resident-centered public services. The Administrative Assistant will provide front-desk and administrative support that helps keep client scheduling, communications, and daily operations...Hourly payTemporary workPart timeWork at officeAfternoon shift- ...Virginia, Maryland, and Washington DC is looking to fill an Office Assistant position in the Chantilly, VA showroom location. Prior... ...handling accounts payable scanning and/or copying administrative paperwork light accounting related tasks experience with...Part timeInternshipWork at office
- ...our business, your work schedule may vary depending on our consultants’ needs. Position Summary : Cheiron seeks an Administrative Assistant with 2 to 4 years of administrative experience or bachelor’s degree. The position performs administrative support for a...Full timeWork at officeMonday to FridayFlexible hours
$22 - $24 per hour
...exposure in various environments. Establish and actively monitor appropriate video framing consistent with legal videography norms. Assist clients with varying audio, video, and technology issues both in-person and remotely. Develop and maintain a high-level...Hourly payRemote workShift work- The Full-Time Development Assistant provides administrative, operational, communications, and event support for the organization's fundraising and community engagement activities. This position maintains accurate donor records, processes and acknowledges gifts, supports...Full timeContract workFor contractorsWork at officeFlexible hoursShift workNight shift
$23 - $28 per hour
...solutions company ASSA ABLOY, is hiring a process-oriented Office Administrator to join our distribution center team in Manassas, VA. This is... ...understanding of product line and services offered ~ Assist in inventory control, including purchase order receipts and...Work at officeImmediate startRelocationMonday to Friday- Thompson Greenspon, a Fairfax, VA CPA firm, is seeking a full-time Administrative Assistant for our in-office team. The role emphasizes accuracy, writing quality, and multi-project support within a collaborative environment. Scheduled 8am-5pm, Monday-Friday, in office...Full timeWork at officeMonday to Friday
$53.27k - $88.78k
.../2025 11:59 PM Eastern Pay Grade S19 Posting Type Open to General Public Job Announcement If you're an experienced administrative assistant with passion and dedication to service, we invite you to join our team. Come join the Fairfax County Health Department team...Hourly payFull timeWork at officeLocal area- ...Administrative Assistant TENICA is looking to hire an administrative assistant with a TS/SCI, CI poly. Job Location: Chantilly, VA Responsibilities: Provide support for scheduling and coordination of activities, conference rooms, calendar management,...For contractors
- ...position supervises the Dissemination Section of the Central Records Division. Provides first-line supervision for a team of administrative assistants specializing in the dissemination of records, the expungement and sealing of records, and quality control of records....Contract workWork at office
$46.16k - $80.78k
...and logistical support, audio-visual and IT troubleshooting support, and administrative support. Responsibilities and duties include: Utilizes a cloud-based scheduling application to assist staff and customers in scheduling and entering detailed event information...Hourly payFull timeTemporary workPart timeWork at officeFlexible hoursShift workDay shiftAfternoon shiftWeekday work- ...responsibilities include the following: Provides information, assistance, and problem resolution in written and verbal form to... ...assigned functional areas of this position are general office administration, and payroll. Illustrative Duties (The illustrative...Agency workTemporary workWork at officeShift work
$500 per month
...We are seeking a highly organized, discreet, and proactive Administrative Assistant to support mission-critical operations within the Intelligence Community. The ideal candidate excels in fast-paced, high-security environments, demonstrates outstanding judgment, and...Temporary workWork at officeImmediate startFlexible hours- ...Administrative Assistant We are seeking a highly organized, discreet, and proactive Administrative Assistant to support mission-critical operations within the Intelligence Community. The ideal candidate excels in fast-paced, high-security environments, demonstrates...Work at office
- ...strongly believe that our diversity is a key driver of innovation and performance. Purpose IDEMIA is seeking an experienced Administrative Assistant to support our Chantilly office and Payment Services team. This role coordinates meetings, office operations, supplies,...Work at officeMonday to Friday
$85k - $110k
...Overview We are seeking an Administrative Assistant located in Chantilly, VA. The Administrative Assistant position performs a variety of administrative duties providing mission support in one or more functions or business areas within the NRO Directorates....Work experience placementWork at officeRelocation- ...TS/SCI with CI Poly clearance prior to consideration. The Administrative Support position performs a variety of administrative duties providing... ...and serve as focal point for databases or spreadsheets Assist in planning, scheduling, organizing, and execution of meetings...Full timeWork at office
$25 - $30 per hour
...advocacy to support the Center's mission and long-term success. About the Position: The Executive Assistant provides high-level administrative, operational, and strategic support to the Executive Director of the Hylton Performing Arts Center. The role...Hourly payPart timeWork at office$22 per hour
...Administrative Assistant — Tysons, VA (Onsite) $22/hour | Mon– Fri, 8: 30 AM– 5: 00 PM | Temp-to-Hire AtWork Tysons is hiring an Administrative Assistant for a corporate office in Tysons, Virginia. Responsibilities: - Greet visitors, answer and route calls and emails...Temporary workWork at office- Job Description Job Description High level of customer service. Client, vendor and building management liaison. Offices, lounge(s) and common areas maintenance. Awnsering multy-line phone system, mail and package managment. Require following skills: Organizational...Work at office
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Administrative Assistant. Be the first to apply!
- administrative office technology Manassas Park, VA
- administrative clerical Manassas Park, VA
- administrative Manassas Park, VA
- administrative & business operations Manassas Park, VA
- confidential administrative support Manassas Park, VA
- administrative support Manassas Park, VA
- senior administrative clerk
- administrative assistant materials management
- insurance administrative assistant
- catering administrative assistant




