Administrative Assistant

Administrative Assistant

Location: Houston, TX — On-site
Employment Type: Full-time
Company: Sundell Steel Co., Ltd. / Sundell System

About the Company

Sundell System is a Houston-based steel and infrastructure solutions company serving customers across the United States. Our business focuses on data center support systems, structural steel products, tubing, scaffolding systems, and other engineered steel solutions.

We are looking for a detail-oriented and dependable Administrative Assistant to support our day-to-day office administration and business operations.

This role is ideal for someone who is organized, comfortable working with documents and business software, and willing to take ownership of a wide variety of operational tasks in a growing company.

Work Authorization

Applicants must be currently authorized to work in the United States. Sundell Steel does not provide employment-based visa sponsorship for this position, now or in the future.

Key Responsibilities

Office Administration & Operations

• Support daily office operations and general administrative activities.
• Maintain organized company files and records in SharePoint and other internal systems.
• Maintain the office asset register and assist with company equipment management.
• Monitor office supplies and coordinate replenishment as needed.
• Coordinate with office management, vendors, service providers, and other external parties.
• Assist with printing, scanning, document preparation, filing, and record maintenance.
• Track assigned tasks and follow up to ensure deadlines and action items are completed.

Accounting & Payment Support

• Prepare payment requests and supporting documentation according to company procedures.
• Assist with employee expense reimbursement documentation and recordkeeping.
• Organize invoices, receipts, payment records, and other supporting documents.
• Assist with bookkeeping-related document preparation and coordination.
• Prepare payroll-related worksheets and supporting records for management and the company's CPA.
• Maintain accurate documentation for financial and administrative transactions.

This position supports the preparation and documentation process; payment authorization and financial approval remain with designated management.

HR & Employee Administration

• Assist with employee onboarding and offboarding.
• Prepare and organize new-hire documents and employee files.
• Coordinate collection of required employment documentation.
• Assist with E-Verify and other onboarding procedures under company instructions.
• Set up basic office equipment, software access, company accounts, and workplace resources for new employees.
• Maintain employee administrative records and coordinate return of company property during offboarding.

Document & Project Support

• Proofread and review company documents for formatting, consistency, completeness, and basic errors.
• Assist with updating presentations, brochures, product manuals, spreadsheets, and other business materials.
• Perform data entry, spreadsheet updates, file organization, PDF/document formatting, and routine document revisions.
• Review large documents and manuals according to provided instructions and identify inconsistencies such as formatting issues, missing information, incorrect units, or typographical errors.
• Organize and prepare documents requested by management, accountants, attorneys, customers, suppliers, or other business partners.
• Provide general administrative and operational support for ongoing projects.

Trade Show & Logistics Support

• Assist with trade show and convention preparation and coordination.
• Review exhibitor information, deadlines, insurance requirements, booth requirements, shipping instructions, and other event documentation.
• Coordinate and track trade show materials, samples, marketing materials, and shipments.
• Monitor shipment status and follow up on delayed or outstanding deliveries.
• Assist with travel, hotel, booth, and event-related arrangements as assigned.
• Maintain organized records of event requirements and ensure assigned deadlines are followed.

General Operations Support

Because we are a growing company, this position is not limited to repetitive administrative work. The Administrative Assistant will also support management with a variety of day-to-day operational assignments.

These assignments may include document proofreading and formatting, data entry, spreadsheet maintenance, information collection, shipment tracking, preparation of business materials, file organization, trade show support, and other routine operational tasks.

The successful candidate should be comfortable receiving a new assignment, understanding the instructions, organizing the work, and carrying it through to completion with appropriate follow-up.

Qualifications

• Previous experience in administration, office operations, project coordination, or a similar role is preferred.
• Strong attention to detail and organizational skills.
• Strong written and verbal communication skills.
• Comfortable working with Microsoft Word, Excel, PowerPoint, Outlook, and other Microsoft 365 applications.
• Comfortable learning new software and internal systems.
• Ability to proofread documents and identify formatting, data, and consistency issues.
• Ability to manage multiple assignments and deadlines simultaneously.
• Strong follow-up skills and ability to keep tasks organized without constant reminders.
• Ability to handle company and employee information professionally and confidentially.
• Comfortable working in a small, growing company where responsibilities may evolve as business needs change.

Preferred Qualifications

• Experience with Microsoft SharePoint.
• Experience with CRM, accounting, payroll, or expense-management systems.
• Experience supporting trade shows, shipping/logistics, or business events.
• Experience preparing or reviewing business documents, presentations, spreadsheets, or manuals.
• Familiarity with basic HR onboarding and office administration processes.
• Strong Excel and document-formatting skills.

What We're Looking For

We are especially interested in someone who is:

• Detail-oriented — notices inconsistencies and errors instead of simply completing tasks mechanically.
• Organized — can keep documents, deadlines, and multiple ongoing assignments under control.
• Reliable — follows through on assigned work and communicates when something is delayed or unclear.
• Proactive — follows up on outstanding items instead of waiting to be reminded.
• Adaptable — is comfortable handling different types of administrative and operational work.
• Tech-comfortable — can learn unfamiliar software and workflows with reasonable guidance.
• Accountable — takes ownership of assigned tasks and knows when to escalate an issue or request management review.

Work Environment

This is an on-site position in Houston, Texas. The role works closely with the Operations team, Sales team, management, external service providers, and other business partners.

The position provides exposure to multiple areas of a growing U.S. business, including office administration, HR, accounting support, logistics, trade shows, document management, and general business operations.

Job Type: Full-time

Pay: $20.00 - $25.00 per hour

Expected hours: 40.0 per week

Benefits:

• 401(k)
• Health insurance

Work Location: In person