> Markdown version of [/jobs/ext/3661723-application-engineer](https://www.wearedevelopers.com/jobs/ext/3661723-application-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Application Engineer - **Company:** Cullerton Group, LLC - **Location:** Charlotte, NC, United States - **Experience:** Experienced - **Salary:** $130,000.0 - **Contract:** Permanent contract - **Skills:** 3d Models, AutoCAD, Software Documentation, SolidWorks (CAD), Datasheets, Systems Integration - **Published:** October 9, 2026 - **Apply:** https://www.wayup.com/i-j-Application-Engineer-Cullerton-Group-574014344536365/ ## About the Role + Bachelor's degree in Mechanical, Chemical, Environmental Engineering, or equivalent experience + 3-5+ years of water treatment system design, process engineering, or technical applications engineering experience + Hands-on experience with water treatment/filtration systems + Strong understanding of hydraulics, pressure loss, component sizing, and system integration + Experience with PFDs/P&IDs and 3D CAD/design tools such as SolidWorks or AutoCAD + Knowledge of pumps, valves, filters, tanks, sensors, instrumentation, and related process equipment + Strong technical writing and customer-facing communication skills Experience with filtration, reverse osmosis (RO), deionization (DI), or similar water-treatment technologies, along with previous experience supporting RFQs, proposals, costing, or engineered-system sales. ## Description Cullerton Group is hiring an Application / Process Engineer for a full-time opportunity near Charlotte, NC. This is a highly technical role combining water treatment process/system design with applications engineering, including RFQs/RFPs, proposals, costing, equipment selection, and customer support. Charlotte, NC | Hybrid ** up to $130K total compensation + full benefits** Full-Time | Permanent The position will be onsite 5 days/week during the first 3 months for onboarding, then transition to a hybrid schedule of 2 days onsite and 3 days remote. ** What You'll Do** + Design complete water treatment and filtration systems + Review RFQs/RFPs and develop technical proposals, scopes, and pricing + Perform hydraulic calculations, pressure-loss analysis, and equipment sizing + Develop PFDs and support P&IDs, layouts, and system documentation + Select pumps, valves, filters, instrumentation, materials, and other system components + Develop BOMs, data sheets, cost models, and quote packages + Work directly with customers, sales, engineering, purchasing, and manufacturing + Support projects from initial application and proposal through manufacturing, testing, and delivery + Provide technical presentations and product/application training