Ameren Tech Stack

Regional electric and gas utility serving 2.4M+ customers across Illinois and Missouri

Utilities St. Louis, MO 5,001–10,000 employees Founded 1902 Public Company

Ameren is a Fortune 500 utility operator managing generation, transmission, and distribution for 2.4M electric and 900K+ gas customers across a 64,000 sq-mi service territory. The tech stack blends legacy infrastructure control (SCADA, PLC, DCS, COBOL) with modern cloud and analytics (Oracle ERP, .NET, Angular, Jaeger), reflecting a utility in active transition—projects target renewable DER integration, corrosion mitigation, and plant reliability optimization, while hiring accelerates in engineering and operations roles, signaling capital-intensive grid modernization and regulatory compliance work ahead.

Tech Stack 42 technologies

Core StackWordPress .NET Java C# TypeScript JavaScript Angular Microsoft Office SharePoint Teams CSS OpenAPI Microsoft Access Excel PowerPoint Word DCS PLC ETAP SCADA FME Jaeger Oracle Cloud Financials Oracle ERP Oracle EPM Microsoft Project SQL COBOL HTML PowerShell+12 more

What Ameren Is Building

◆Challenges

Compliance with regulations
Corrosion mitigation
Integrating renewable der
Meeting r-stamp renewal requirements
System performance degradation
Energy center reliability improvement
Ensuring safety compliance
Cost-effective operation
Plant risk optimization
Grant reporting data collection

▲Active Projects

Cleaning and painting gas meter sets for corrosion mitigation
Subtransmission system development
Renewable der integration
Corrective action program (cap)
Plant reliability optimization (pro)
Pra model development
Pra technique implementation
Esg voluntary reporting
Energy affordability initiatives
Upgrade inclusive engagement webpage

Hiring Activity

Accelerating130 roles · 60 in 30d

Department

Engineering

Ops

Construction

Legal

Maintenance

Finance

Digital

Seniority

Mid

Senior

Junior

Intern

Manager

Director

Staff

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About Ameren

Ameren Corporation operates two regional electric and gas utilities: Ameren Illinois (distribution and transmission) and Ameren Missouri (vertically integrated generation, transmission, and distribution). Combined, they serve 2.4M electric customers and 900K+ natural gas customers across Illinois and Missouri. The company generates over 10,200 MW of capacity and ranks among the nation's largest investor-owned electric and gas utilities. Operations span generation, transmission, distribution, construction, and maintenance across a 64,000 sq-mi service area.

HeadquartersSt. Louis, MO

Company Size5,001–10,000 employees

Founded1902

Hiring MarketsUnited States, Israel

Frequently Asked Questions

What is Ameren's tech stack?

Control systems (SCADA, PLC, DCS, ETAP), legacy platforms (COBOL, Oracle ERP/EPM/Cloud Financials), and modern web/cloud (Angular, .NET, SQL, Microsoft Office 365, SharePoint).

What are Ameren's major operational priorities?

Renewable DER integration, corrosion mitigation on gas infrastructure, plant reliability optimization, regulatory compliance (R-stamp renewal, ESG reporting), and system performance degradation.