Purchasing Manager

Purchasing Coordinator - Carson, CA

Who We Are

AMPAM Parks Mechanical specializes in multifamily residential construction. The company’s core strength is its design-build model that allows clients to minimize risk, shorten construction schedules, and accelerate building occupancy.

What We’re Looking For

The Purchasing Manager – Plumbing Division is responsible for the strategic sourcing, procurement, and supply-chain management of all plumbing materials, equipment, and subcontracted services required to support multi-family residential construction projects. This role partners closely with project managers, estimators, field superintendents, and vendors to ensure materials are delivered on time, within budget, and to specification. The ideal candidate brings deep knowledge of plumbing systems and materials combined with sharp negotiation skills and proven purchasing acumen.

What You’ll be Doing: (But not limited to the following) 

Procurement & Sourcing

• Lead end-to-end purchasing of plumbing materials including pipe, fittings, fixtures, water heaters, rough-in hardware, and specialty items for multi-family projects.


• Develop and maintain a preferred vendor/supplier list with competitive pricing agreements, volume discounts, and favorable payment terms.


• Issue and manage purchase orders, RFQs, and subcontractor agreements in alignment with project budgets and schedules.


• Evaluate alternative materials and suppliers to drive cost savings without compromising quality or code compliance.

Cost Management & Budgeting

• Collaborate with estimating teams during the pre-construction phase to validate material takeoffs and pricing assumptions.


• Track committed costs, approved change orders, and material variances against project budgets on an ongoing basis.


• Identify and communicate cost exposures, market pricing shifts, or lead-time risks proactively to project leadership.


• Support monthly cost-to-complete forecasts and procurement reporting to operations management.

Vendor & Supplier Relations

• Cultivate and maintain strong relationships with plumbing supply houses, manufacturers, and specialty distributors.


• Negotiate master supply agreements, credit terms, and rebate programs to maximize company purchasing power.


• Monitor vendor performance for on-time delivery, material quality, and service responsiveness; address issues promptly.


• Stay current on plumbing product innovations, code changes, and supply-chain trends relevant to multi-family construction.

Logistics & Inventory Coordination

• Coordinate material delivery schedules with project managers and field foremen to align with construction phasing and installation sequences.


• Manage warehouse/laydown inventory where applicable; minimize excess stock and material waste across active job sites.


• Resolve delivery discrepancies, damaged material claims, and returns in a timely manner.


• Maintain accurate purchasing records and documentation within the company's ERP/project management system.

Cross-Functional Collaboration

• Partner with Mechanical and Electrical Purchasing counterparts to identify cross-divisional procurement opportunities and synergies.


• Support the preconstruction team with value engineering recommendations on plumbing systems and fixture packages.


• Assist project managers in reviewing subcontractor scopes and ensuring material responsibilities are clearly delineated.


• Participate in project kick-off meetings, OAC meetings, and internal procurement reviews as needed.

Who You Are

• Experience:

• Bachelor's degree in Supply Chain Management, Construction Management, Business Administration, or related field preferred; equivalent experience considered.


• 5 years of purchasing or procurement experience in the construction industry; plumbing, MEP, or mechanical contracting experience strongly preferred.


• Demonstrated knowledge of plumbing materials, systems, and codes applicable to multi-family residential construction.


• Experience with commercial or multi-family project procurement at a volume of $10M annually preferred.

• Skills:

• Strong negotiation and contract management skills with a track record of achieving cost savings.


• Proficiency with ERP systems, procurement platforms, and construction management software (e.g., Procore, Sage, Viewpoint, or similar).


• Excellent organizational skills with the ability to manage multiple projects and deadlines simultaneously.


• Strong analytical skills; comfortable reviewing material takeoffs, budgets, and cost reports.


• Effective communicator with the ability to build relationships internally and externally at all levels.


• High degree of integrity and professionalism in vendor dealings and financial stewardship.


• KOJO software familiarity a plus

Applicants must be currently authorized to work in the U.S. on a full-time basis without future employment sponsorship