Administrative Assistant

Sincere Builders; Houston (TX); On-site; USD 42,000 - 54,000; Full time

Job summary

Sincere Builders is seeking a highly organized Administrative Assistant to run day-to-day office operations. This front-line role is the first point of contact for visitors and callers, requiring a professional, welcoming presence and strong follow-through.

The role involves managing reception, supplies, vendors, and providing administrative support to project and leadership teams so they can focus on building projects.

Qualifications

• Proven experience as Administrative Assistant or similar front-office role.
• Proficiency with Microsoft Office (Outlook, Excel, Word).
• Strong organizational, time-management and multitasking abilities.
• Professional, friendly communication both on the phone and in person.
• Reliable, punctual, and maintains confidentiality.

Responsibilities

• Greet visitors and route calls; manage mail and deliveries.
• Maintain stocked office supplies and breakroom stock; track inventory.
• Coordinate office services, vendors, cleaning, maintenance, and equipment services.
• Order and manage office furniture and equipment as needed.
• Keep conference rooms and common areas clean and organized; ensure meeting readiness.
• Schedule meetings and prepare documents; handle filing and data entry.
• Assist with onboarding logistics for new hires (desk setup, supplies).
• Prepare basic documents, trackers, and correspondence using Microsoft Office.
• Maintain professionalism and confidentiality at all times.
• Assist with setup/breakdown at events and travel arrangements for staff.

Skills

MS Office proficiency

Organizational skills

Time management

Communication skills

Reliability & punctuality

Attention to detail

Tools

Asana

Job description

We are a growing construction company seeking a highly organized, dependable Administrative Assistant to run the day-to-day operations of our office. This is a front-line role and the first point of contact for everyone who walks through our door or calls in—so a professional, welcoming presence and strong follow-through are essential. The Administrative Assistant keeps the office running smoothly: managing reception, keeping supplies stocked, coordinating vendors and office services, and supporting our project and leadership teams with administrative tasks so they can stay focused on building projects.

Key Responsibilities

• Serve as the face of the office: greet visitors, answer and route incoming calls, and manage incoming and outgoing mail and deliveries.
• Keep the office fully stocked—order and maintain office, kitchen, and breakroom supplies, and track inventory.
• Coordinate office services and vendors, including cleaning staff, maintenance, and equipment/service providers.
• Handle ordering and coordination of office furniture and equipment as needed.
• Keep the front office, conference rooms, and common areas clean, organized, and meeting-ready.
• Support the team with administrative tasks such as scheduling meetings, preparing and organizing documents, filing, data entry, and organizing receipts and expenses.
• Assist with onboarding logistics for new hires, including desk, supplies, and workspace setup.
• Prepare basic documents, trackers, and correspondence using Microsoft Office (Outlook, Excel, Word).
• Maintain confidentiality and professionalism at all times.
• Assist with setup and breakdown at off-site events such as expos and conferences.
• Assist with booking travel and lodging as needed for company staff.

Required Qualifications

• Proven experience as an Administrative Assistant, Office Coordinator, Receptionist, or in a similar administrative role.
• Proficiency in Microsoft Office (Outlook, Excel, Word).
• Exceptional organizational and time-management skills, with the ability to juggle multiple requests at once.
• Professional, friendly phone and in-person communication skills.
• Reliable, punctual, and comfortable being the consistent in-office presence the team depends on.
• Strong attention to detail and follow-through.

Preferred Qualifications

• Experience in construction, engineering, real estate development, or a similar project-based industry.
• Experience coordinating vendors, supplies, or office services.
• Familiarity with task-tracking tools such as Asana.

What Success Looks Like in This Role

• The office runs smoothly and looks professional—supplies are always stocked and nothing falls through the cracks.
• Visitors and callers are greeted and handled promptly and professionally.
• Vendors and office services are managed efficiently without leadership involvement.
• The team can count on a well-organized, well-supplied, and welcoming office every day.