Administrative Assistant
MasTec
Overview
Three Phase Line Construction, Inc. (3Phase) has proven expertise in all areas of distribution, substation, transmission, and communication work. In every stage of every project, 3Phase adheres to the strictest environmental and safety compliances. With highly skilled professionals, advanced equipment, and an unprecedented work ethic, 3Phase takes pride in delivering the highest quality service by combining all three phases of electrical contracting: Safety, Service, and Productivity. 3Phase 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. 3Phase is a proud subsidiary of MasTec (NYSE: MTZ), a Fortune 500 Company ranked by Energy News-Record as one of the leading contractors in the country. 3Phase is part of the MasTec Power Delivery segment. We are certified as a minority-controlled company by the National Minority Suppliers Development Council (NMSDC). Our rich diversity of people and ideas makes us a stronger, more innovative organization. Job Summary 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.
- Assist and support field management on projects and daily business needs.
- High school diploma or equivalent.
- 1 year of clerical or administrative experience related to work orders and invoice processing.
- Associate degree in business management or similar, including computer and accounting courses.
- Experience in a construction or project environment.
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 50 pounds.
Please note this job description is not designed to cover or contain a comprehensive list of activities, duties, or responsibilities that are required of the employee for this job. The Company reserves the right to revise or change the job duties as the need arises. Management reserves the right to change the description, duties, or work schedules to accommodate individuals with disabilities.
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, 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.
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Administrative Assistant in Farmington, NH vacancy
- Farmington School District in Farmington, NH is seeking a Business Administrator to oversee the district's business functions, ensuring compliance with local, state, and federal laws while supporting high-quality educational services. The role requires a Bachelor's in Business...SuggestedFull timeLocal area
- SCHOOL ADMINISTRATIVE UNIT #61 FARMINGTON, NH - Farmington School District Position Description PAYROLL CLERK CLASSIFICATION: Non-Exempt... ...or missing information. Organize sub/ non-sub files. Assist Business Administrator in variety of financial/payroll related...SuggestedHourly payFull timeSummer work
- ...Payroll Clerk Under the direction of the Business Administrator, the Payroll Clerk is responsible for all duties associated with employee compensation (including benefits administration). This position is responsible for the areas of benefits, payroll, State of New...Suggested
- ...aka: patient), -Account receivables/payables -Handling of payments in cash or credit card -various other Senior Executive Administrative duties. Most important Skill sets: Strong problem solving skills Attention to detail and accuracy Good...Suggested
$18 - $25 per hour
...Great Northern Builders, Inc. Executive Assistant Location: South Berwick, ME (Hybrid: in-owner's home or office and remote flexibility... ...will support the company owner by managing a range of administrative, scheduling, and household management tasks. Some days you'll...SuggestedHourly payPart timeFor contractorsWork at officeLocal areaRemote workWork from home10 hours per weekFlexible hours- ...Administrative assistant / officer position available for Business Development. Full time with Medical Insurance and part-time available. New graduate or experienced candidate, he/she can take responsibility, motivate and energetic to work with passion and implement new...Full timePart timeWork at office
- ...educator or Title I Coordinator under the direction of the building administration. QUALIFICATIONS: Candidates must possess an... ...educator, or related services provider. • Monitors and provides assistance to students during classroom activities. • Supports...Contract workLocal areaImmediate start
- ...long as it does not impose an undue hardship on the Company. Please inform the Company's Human Resources Representative if you need assistance completing any forms or to otherwise participate in the application process. Click below to review information about our...Weekly payFull timeTemporary workPart timeLocal areaFlexible hoursShift work
- Data Entry Operator | Junior (Remote) Rochester, New Hampshire, United States Job Openings Data Entry Operator | Junior (Remote) A Data Entry Clerk, is responsible for inputting data and making changes to existing data figures in digital databases. Their duties include...Remote work
- ...which shows them where to put the lunches for each group. -Assist the sales manager with greeting and helping the groups board the... ..., document the incident, and report it to the Ticket Office administration or HR immediately. - The manager is never to discuss other agent...Work at officeImmediate startNight shiftDay shift
- A data entry company is seeking a Junior Data Entry Operator to work remotely from Somersworth, NH. The role involves inputting data from paper documents into digital formats and updating order statuses. Attention to detail is essential to ensure accuracy in data processing...Remote work
$26.47 - $43.62 per hour
...– Clerks sell stamps, take incoming mail, and sort and distribute mail in addition to other clerical functions. This position also assists the public with general mailing needs, such as completing a change of address, mail holds, and giving out post office box keys....Hourly payFull timeCurrently hiringWork at office- ...and full benefits including vacation, sick leave, insurance, and retirement plans. ~ Clerk - Clerks sell stamps, handle mail, and assist customers with postal services. The Postal Service operates over 30,000 locations and delivers over 170 billion pieces of mail...Full time
- ...We’re seeking an Assistant Store Manager to join our team to help with store operations, customer service and team development. Duties include, but are not limited to, the following: Assist with store functions and day-to-day store activities Help customers in a...Contract workPart timeSeasonal work
- ...Assistant Manager Assist the General Manager in executing all aspects of the restaurant operations. May be assigned specific areas to manage within the restaurant in accordance with the GM's overall business plan. Essential job functions include, but are not limited...Hourly payShift work
$50k - $55k
...Assistant Restaurant Manager Somersworth, NH | $50,000–$55,000 + Bonus Potential + Career Growth Looking for more than just another restaurant management job? Join a high-volume, fast-paced restaurant where you'll play a key role in leading the team, supporting daily...Casual workShift work- ...desire to make our members feel welcome in our Judgement Free Zone® Characteristics that will make you a perfect match for our Assistant Manager: You: Exhibit a positive and upbeat attitude. Have a passion for delivering a consistent and exceptional...Full timeFlexible hoursShift work
- ...Position Type: Support Staff/Special Education Assistant Date Posted: 4/1/2026 Location: New Durham Elementary School Description: New Durham School seeks a patient, caring, collaborative, skilled, special education support staff team member. Job Summary...
- ...empty packaging. Prepares product for shipment. Operates tracking scanners to maintain accurate inventory and shipments. Assists in order processing as necessary. Operates appropriate machinery according to safety protocols. Contributes to team effort by...
$15 - $20 per hour
Sam’s Club is seeking Merchandise and Stocking Associates to assist with stocking shelves, organizing merchandise, and supporting daily warehouse club operations. Associates are responsible for unloading deliveries, moving merchandise onto the sales floor, stocking shelves...Hourly payFull timePart timeShift workNight shift- ...including Teams, SharePoint, and Outlook, as needed. Answer telephone calls and document messages accurately for staff. Perform administrative duties such as photocopying, faxing, and scanning forms. Prepare end-of-day reports, manage deposits, and reconcile cash...Full timeWork at officeRotating shift
$15 - $19 per hour
...responsibilities will include: Warm Welcomes: Greet and assist patients with a beaming smile, making every visit memorable from... ...flow to ensure a smooth and streamlined experience. Administrative Brilliance: Handle phone calls, emails, and paperwork with precision...Hourly payFull timeFlexible hours$214.51k
Company Overview Check out this video and find out why our team loves to work here! ( Join Us! CDM Smith – where amazing career journeys unfold. Imagine a place committed to offering an unmatched employee experience. Where you work on projects that are meaningful...Contract workFor contractorsWork experience placementH1bWork at office- ...flow of the salon and communicating with guests until seated with their stylist. You will assist in managing retail, cleaning, stocking and upkeep of the salon, and other administrative duties. To be successful in this role, you should be highly organized, have strong...Flexible hours
- ...shining light that sets our guests' experience on the right foot from the moment they arrive. These exceptional guest service providers assist guests through the reservation and check-in processes, providing a friendly demeanor and helpful attitude throughout. These...Seasonal workLocal areaShift workAfternoon shift
- ...forklift and baler requirements do not apply if under the age of 18). Ability to push and pull merchandise up to 2,000 pounds with the assistance of proper material handling equipment (e.g. pallet jack). Ability to occasionally lift or reach merchandise overhead. Ability to...Flexible hoursShift workNight shiftWeekend work
- Walmart Stores | Medical, Dental, Vision, Rx + 401(k) with match + PTO + 100% Reimbursement of Tuition & Books | 116 Farmington Road | Responsibilities: Unload trucks; Stock products on shelves; Backroom stocking and inventory movement; Greet customers and answer questions...Immediate start
- Walmart Stores | Medical, Dental, Vision, Rx + 401(k) with match + PTO + 100% Reimbursement of Tuition & Books | 59 Waltons Way | Responsibilities: Unload trucks; Sort products in the backroom; Stock products on shelves; Ensure aisles are neat and area is clean; Greet ...Immediate start
$16 - $29 per hour
Hourly Wage: $16 - $29 per/hour *The actual hourly rate will equal or exceed the required minimum wage applicable to the job location. Additional compensation includes annual or quarterly performance incentives. Additional compensation in the form of premiums may...Hourly payMinimum wageFull timeTemporary workPart timeShift workNight shiftDay shift- ...Job Description Job Description About the Job: As an Assistant Manager, you'll be at the heart of our restaurant's success, supporting the Restaurant General Manager by upholding brand standards and inspiring your team. You'll lead by example, training, coaching...Work experience placementImmediate startShift work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Administrative Assistant. Be the first to apply!
Related searches
- administrative Farmington, NH
- spa administrative assistant
- administrative assistant pharmaceutical company
- housekeeping admin assistant
- inventory administrative assistant
- executive team assistant office manager
- data entry/admin assistant
- information technology administrative assistant
- virtual administrative assistant
- shipping administrative assistant


