Senior Sales Engineer

Based in St. Louis, Core & Main is a leader in advancing reliable infrastructure with local service, nationwide. As a specialty distributor with a focus on water, wastewater, storm drainage and fire protection products and related services, Core & Main provides solutions to municipalities, private water companies and professional contractors across municipal, non-residential and residential end markets, nationwide. With over 370 locations across the U.S., the company provides its customers local expertise backed by a national supply chain.

Core & Main’s 5,700 associates are committed to helping their communities thrive with safe and reliable infrastructure. Visit  to learn more.

Job Summary The Senior Sales Engineer serves as a senior technical sales resource responsible for driving growth, expanding market share, and developing new business for engineered solutions within the assigned territory or region. This role combines advanced technical expertise with strategic sales execution, working closely with sales teams, engineers, contractors, developers, distributors, and customers to identify needs, influence specifications, support complex proposals, and deliver technically sound solutions.

Major Tasks, Responsibilities and Key Accountabilities Business Development & Market Growth Develops and executes territory or regional sales plans aligned with company goals, with focus on complex engineered products, applications, and project opportunities.

Identifies, pursues, and secures new business opportunities with engineering firms, contractors, developers, public entities, owners, distributors, and other key stakeholders.

Partners with sales leaders and outside sales representatives to support large customers, strategic accounts, and high-value project pursuits.

Technical Sales & Solution Support Provides advanced technical advice and product application support to sales teams and customers throughout the sales, design, selection, proposal, and implementation process.

Prepares and conducts technical sales presentations, customer briefings, product demonstrations, and training sessions for company representatives, engineering firms, contractors, and customers.

Reviews customer technical specifications, project requirements, and sales proposals to ensure technical accuracy, quality alignment, and appropriate solution fit.

Evaluates product configurations, installation requirements, cost considerations, resource needs, and implementation timelines to support customer-specific pricing and solution recommendations.

Project, Proposal & Market Support Teams with Sales Managers, regional sales associates, and technical support teams on presentations, proposals, and project strategies for large or complex customers.

Builds pricing, establishes follow-up plans, and supports sales associates and regions in execution of targeted opportunities.

Shares market trends, competitive intelligence, customer feedback, and technical insights with applicable internal teams to support continuous improvement and business growth.

Attends trade shows, association meetings, customer events, and industry meetings as needed to promote company capabilities and maintain market awareness.

Leadership & Collaboration Serves as a recognized subject matter expert and resource for complex technical questions, applications, and customer needs.

May lead or support large projects or processes with limited oversight, including planning, coordinating, monitoring, and reviewing progress and results.

May coach, train, review, or delegate work to lower-level professionals or sales associates, contributing to their technical and professional development.

Resolves complex customer or sales support issues and helps troubleshoot implementation…