Purchasing Administrative Assistant

Dynamic Systems, Inc.
  • San Antonio, TX
    Today

    Job Description

    Position Summary 

    The Purchasing Administrative Assistant supports the procurement function within a mechanical 

    contracting company by coordinating purchasing activities, maintaining accurate records, and 

    ensuring timely delivery of materials and services. This role plays a critical part in supporting 

    project timelines by assisting with vendor communication, purchase order processing, and 

    documentation related to mechanical construction projects (e.g., HVAC, plumbing, piping 

    systems). 

    Key Responsibilities 

    • Assist in creating, issuing, and tracking purchase orders for materials and equipment. 

    • Maintain and update vendor databases, pricing lists, and procurement records. 

    • Communicate with vendors to obtain pricing, availability, and delivery timelines. 

    • Track material deliveries to ensure alignment with project schedules and site 

    requirements. 

    • Coordinate with project managers, estimators, and field personnel to understand job

    specific material needs. 

    • Review purchase requisitions for accuracy and completeness prior to order placement. 

    • Resolve discrepancies related to invoices, deliveries, or damaged materials. 

    • Assist in negotiating pricing or identifying cost-saving opportunities when applicable. 

    • Maintain organized electronic and physical filing systems for purchase orders, contracts, 

    and vendor documentation. 

    • Support inventory tracking and coordination with warehouse or job site logistics. 

    • Generate procurement reports and assist in budget tracking for projects. 

    • Ensure compliance with company policies, safety standards, and contractual requirements.

    FLSA – Non-Exempt  



    Qualifications 

    • High school diploma or equivalent required; associate or bachelor’s degree in business, 

    construction management, or related field preferred. 

    • 1–3 years of administrative or purchasing experience, preferably in construction or 

    mechanical contracting. 

    • Familiarity with construction materials (HVAC, plumbing, piping, fittings, etc.) is a plus. 

    • Proficiency in Microsoft Office (Excel, Outlook, Word) and purchasing or ERP software. 

    • Strong organizational skills with high attention to detail. 

    • Ability to manage multiple priorities in a fast-paced, project-driven environment. 

    • Effective communication and interpersonal skills. 

    • Basic understanding of construction project workflows and terminology preferred. 

    • Problem-solving mindset with ability to handle vendor or delivery issues proactively. 

    Key Performance Indicators (KPIs) 

    • Purchase Order Accuracy Rate: Percentage of error-free purchase orders issued. 

    • On-Time Material Delivery Rate: Alignment of deliveries with project schedules. 

    • Cycle Time for PO Processing: Speed from requisition to issued purchase order. 

    • Invoice Discrepancy Rate: Number of billing issues or mismatches resolved. 

    • Vendor Response Time: Efficiency in obtaining quotes and confirmations. 

    • Cost Efficiency: Contribution to savings through price comparisons or vendor sourcing. 

    • Document Organization & Compliance: Accuracy and completeness of procurement 

    records.

    Work Environment 

    • Primarily office-based within a construction or corporate office setting. 

    • Frequent coordination with field personnel, warehouses, and job sites. 

    • May require occasional site visits to understand material needs and logistics. 

    • Fast-paced environment driven by construction project timelines and deadlines. 

    • Standard business hours with occasional extended hours depending on project demands. 

    • Collaborative team environment involving operations, project management, and 

    accounting teams.



    PIbc85388954d3-25401-41381719

    Numbers & Facts

    LocationSan Antonio, TX

    Skills

    • Accountingunmatched
    • Administrative Skillsunmatched
    • Billingunmatched
    • Budget Managementunmatched
    • Communication Skillsunmatched
    • Constructionunmatched
    • Construction Managementunmatched
    • Construction Projectsunmatched
    • Contract Managementunmatched
    • Contract Requirementsunmatched
    • Corporate Policiesunmatched
    • Detail Orientedunmatched
    • Documentationunmatched
    • ERP (Enterprise Resource Planning)unmatched
    • HVACunmatched
    • Interpersonal Skillsunmatched
    • Logisticsunmatched
    • Maintain Complianceunmatched
    • Materials Trackingunmatched
    • Microsoft Excelunmatched
    • Microsoft Officeunmatched
    • Microsoft Outlookunmatched
    • Microsoft Wordunmatched
    • Multitaskingunmatched
    • Needs Assessmentunmatched
    • Operations Managementunmatched
    • Organizational Skillsunmatched
    • Performance Metricsunmatched
    • Pipingunmatched
    • Plumbingunmatched
    • Pricingunmatched
    • Problem Solving Skillsunmatched
    • Procurement Softwareunmatched
    • Project Scheduleunmatched
    • Project Trackingunmatched
    • Project/Program Coordinationunmatched
    • Project/Program Managementunmatched
    • Purchase Ordersunmatched
    • Purchasing/Procurementunmatched
    • Record Keepingunmatched
    • Reporting Skillsunmatched
    • Safety Standardsunmatched
    • Service Deliveryunmatched
    • Team Playerunmatched
    • Time Managementunmatched
    • Vendor/Supplier Sourcingunmatched
    • Warehouse Coordinationunmatched
    • Warehousingunmatched

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