Senior Purchasing Agent Jobs in Reston, VA (NOW HIRING)

Senior Purchasing Agent 

Position Summary:

The Senior Purchasing Agent is responsible for managing the procurement of
materials, equipment, subcontracted services, and vendor relationships to
support mechanical construction operations. This role plays a critical part in
ensuring projects receive the right materials at the right time and at the
most competitive cost while maintaining quality standards and supporting
project profitability.
The Senior Purchasing Agent works closely with Project Managers,
Estimators, Operations Leadership, Fabrication, Vendors and field teams to
coordinate purchasing activities for HVAC, plumbing, piping, fabrication, and
industrial construction projects. The ideal candidate possesses strong
procurement experience, excellent negotiation skills, and a thorough
understanding of mechanical and plumbing materials and supply chain
management.

Key Responsibilities:

Procurement & Purchasing
Manage the procurement process for materials, equipment, tools,
and subcontracted services required for mechanical construction
projects.
Solicit, review, and evaluate vendor and supplier quotations to
ensure cost competitiveness and scope alignment.
Issue purchase orders and maintain procurement documentation in
accordance with company procedures.
Coordinate purchasing activities to ensure materials and equipment
are delivered on time to support project schedules.
Identify and source alternative suppliers, products, and solutions to
improve pricing, availability, and operational efficiency.
Monitor market trends, pricing fluctuations, and supply chain
conditions affecting procurement activities.

Vendor & Supplier Management
Develop and maintain strong relationships with suppliers,
manufacturers, distributors, and subcontractors.
Negotiate pricing agreements, rebates, terms, and strategic
purchasing partnerships.
Evaluate supplier performance related to quality, delivery,
responsiveness, and cost effectiveness.
Resolve vendor disputes, delivery issues, and procurement-related
challenges.
Maintain an approved vendor database and support supplier
qualification efforts.

Project Support & Coordination
Collaborate with Estimating during preconstruction to obtain budget
pricing and supplier input.
Work closely with Project Managers to understand project
requirements, schedules, and procurement priorities.
Coordinate with Fabrication Shops and field operations to ensure
timely availability of materials and equipment.
Assist with long-lead item identification and procurement planning.
Support project turnover and procurement planning meetings.

Cost Control & Financial Management
Support company profitability by obtaining competitive pricing and
identifying cost-saving opportunities.
Track purchasing commitments and assist with project cost
reporting.
Review invoices, purchase orders, and receiving documentation for
accuracy.
Ensure procurement activities align with project budgets and
contractual requirements.
Identify opportunities for standardization and strategic sourcing
across the organization.

Inventory & Logistics 
Assist in managing inventory levels for commonly used materials and
shop supplies.
Coordinate material deliveries, storage requirements, and logistics
planning.
Work with warehouse and fabrication teams to optimize material flow
and inventory management.
Monitor shortages, backorders, and supply chain disruptions and
develop mitigation plans.

Process Improvement & Compliance 
Support continuous improvement initiatives related to procurement
efficiency and cost management.
Maintain accurate purchasing records and reporting.
Ensure compliance with company purchasing policies, contractual
obligations, and ethical procurement practices.
Participate in ERP, procurement software, and process improvement
initiatives.

Qualifications :
3+ years of purchasing, procurement, or supply chain experience
within mechanical contracting, construction, HVAC, plumbing, piping,
or industrial environments.
Strong knowledge of mechanical construction materials, equipment,
and vendor networks.
Proven experience negotiating pricing, contracts, and supplier
agreements.
Strong understanding of project-based procurement and construction
operations.
Strong organizational, analytical, and problem-solving skills.
Excellent communication and relationship management abilities.
Proficiency with ERP systems, purchasing software, Microsoft Excel,
and Microsoft Office Suite.