Administrative Assistant
Job Description
About Us
ACS Group is one of the largest infrastructure construction companies and P3 developers in the world,
with more than 122,000 employees spread across over 50 countries and an annual revenue of USD$52
billion as of December 31, 2021. ACS Group has over 50 years of experience in developing, financing,
operating, and maintaining aviation, highway, bridge, rail, and social infrastructure projects.
Description of Position
Position Title Administrative Assistant
Department Human Resources
Report To Human Resources Generalist
General Job Description The Administrative Assistant provides comprehensive
administrative, operational, and organizational support to ensure
the efficient day-to-day functioning of the office. This role requires
a highly organized, reliable, and professional individual who can
manage multiple priorities in a fast-paced corporate environment.
The position reports directly to the Office Manager and offers
growth opportunities with increased responsibility over time.
Essential Functions • Oversee daily office operations, ensuring a clean,
organized, and fully stocked workspace
- Coordinate meetings, calendars, conference rooms, and
catering arrangements
- Arrange and manage business travel, including booking
flights, accommodations, transportation, and preparing
itineraries
- Monitor and maintain inventory of office supplies,
equipment, furniture, kitchen items and vendor
relationships (e.g., cleaning, maintenance, delivery
services)
- Handle incoming/outgoing mail, packages, and courier
services
- Prepare and edit documents, reports, presentations, and
filing systems
- Support billing, expense reporting, and basic
administrative/accounting tasks, including travel expense
and reconciliation
Assist with employee onboarding/offboarding, internal events, and general employee support and communications
Maintain internal directories, records, and office documentation
Provide general administrative support to leadership and cross-functional teams
Provide basic IT coordination/support and assist with workstation setup and technology tracking
Ensure compliance with office procedures, health, and safety standards
Manage multiple priorities, meet deadlines, and support special projects as assigned
Coordinate service requests, work orders, and vendor access with building management
Knowledge, Skills, Abilities
Proficiency in Microsoft Office (Outlook, Word, Excel) and general office systems
Strong understanding of office administration procedures and best practices
Excellent organizational and time management skills with the ability to prioritize tasks effectively
Strong verbal and written communication skills
Professional interpersonal skills with the ability to interact across all levels of the organization
Ability to multitask and adapt in a fast-paced environment
High attention to detail and accuracy in reporting and documentation
Strong problem-solving skills with the ability to use sound judgment and initiative
Ability to work independently and collaboratively within a team
Basic knowledge of office equipment operations and troubleshooting
Ability to handle confidential information with discretion and professionalism
Adaptability and flexibility to respond to changing priorities and deadlines
Customer service mindset with a proactive and solutions-oriented approach
Basic understanding of administrative support for accounting, HR, and operations
Familiarity with vendor coordination and office service management
Requirements
Minimum 2 years’ relevant administration experience required
High school diploma is required (Associate’s, or Bachelor’s degree preferred
Intermediate proficiency in Outlook, Excel, and Word is required
Professional demeanor and strong interpersonal skills
Strong Organizational skill and attention to detail
Excellent verbal and written communications skills in English
Spanish language skills are a plus, but not required
Ability to work independently with initiative and as part of a team
Professional demeanor and strong interpersonal skills
Ability to perform daily tasks with minimal supervision
Adherence to all company policies, procedures, and safety standards
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
