Roeslein & Associates Tech Stack

EPC and modular fabrication for energy, industrial, and renewables projects

Construction St. Louis, MO 1,001–5,000 employees Privately Held

Roeslein & Associates is a 1,000–5,000-person EPC firm built on modular fabrication and process design, with deep specialization in can manufacturing, renewables, oil & gas, and chemical processing. The stack is anchored in legacy industrial CAD (AutoCAD, Inventor, SolidWorks, Plant 3D) and SCADA/PLC control systems (Ignition, Allen-Bradley, Siemens) — typical for capital-project delivery — but the pain list reveals a shift: data quality issues in trade capture, procurement friction, and compliance tracking are top concerns, suggesting the firm is moving beyond design-and-build toward operational intelligence and supply-chain visibility.

Tech Stack 33 technologies

Core StackAutoCAD SolidWorks Oracle Allen-Bradley Siemens Windows Inventor AutoCAD Inventor Excel AutoCAD Plant 3D Navisworks Word Plant 3D SharePoint Ignition GoCanvas SCADA PLC Microsoft Office Comarch ERP HMI Modbus Variable Frequency Drives Oracle Primavera Microsoft Project GMAW Rittal Rockwell Automation

What Roeslein & Associates Is Building

◆Challenges

Process gaps in trade accuracy
Reduce energy consumption
Reducing procurement costs
Data discrepancies in trade capture
Improving procurement processes
Improving manufacturing efficiency
Growing legal function
Complex pipe designs
Meeting renewable gas compliance requirements
Managing regulatory documentation

▲Active Projects

Installation and commissioning of integrated, modular, and packaged systems
Biogas generation system maintenance
Operational efficiency and automation projects
Epfc projects
Pre-design structural unitized system for the d&i process
Develop dashboards and training tools
Renewable natural gas trading and marketing
Epa/carb pathway certification for new rng plants
Renewable energy program registration for new projects
Root cause analysis of production performance issues

Hiring Activity

Steady85 roles · 25 in 30d

Department

Manufacturing

Engineering

Ops

Finance

Construction

Legal

Sales

Seniority

Mid

Junior

Senior

Manager

Lead

Intern

Staff

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About Roeslein & Associates

Founded in 1990 and employee-owned since 2014, Roeslein & Associates delivers engineering, procurement, and construction (EPC) services with a focus on modular and unitized systems. The company serves energy (traditional and renewable), industrial manufacturing, and chemical processing clients. Core capabilities span concept-to-commissioning project delivery, on-site system installation, and performance optimization. The hiring profile — skewed toward manufacturing and engineering roles at mid-level seniority — reflects active project execution across multiple geographies (U.S., Poland, Brazil). Active workstreams include biogas and renewable natural gas projects, operational automation initiatives, and compliance certification for new generation plants.

HeadquartersSt. Louis, MO

Company Size1,001–5,000 employees

Hiring MarketsUnited States, Poland, Brazil

Frequently Asked Questions

What CAD and design tools does Roeslein & Associates use?

AutoCAD, Inventor, SolidWorks, AutoCAD Plant 3D, and Navisworks are standard across design and 3D coordination. Oracle Primavera and Microsoft Project handle project scheduling.