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hsag Heidelberger Services AG Tech Stack

Energy industry BPO and digital transformation services for German utilities

Utilities Heidelberg 501–1,000 employees Founded 2005 Public Company

hsag Heidelberger Services AG operates a business process outsourcing and consulting practice focused exclusively on the energy sector. The tech stack reflects a hybrid enterprise architecture—SAP IS-U (utility-specific ERP) paired with modern application layers (Node.js, NestJS, TypeScript on Azure and AWS)—and emerging AI adoption (TensorFlow, PyTorch, FastAPI). Active pain points center on scaling BPO delivery, automating legacy workflows (EDI message flows, billing processes), and staffing experienced roles, which aligns with their current hiring velocity heavily weighted toward operations and customer support rather than engineering.

Tech Stack 24 technologies

Core StackTypeScript Node.js Nest.js JavaScript NestJS MySQL PostgreSQL GitHub Actions Power BI Jira SAP Python TensorFlow PyTorch AWS SAP IS-U Azure Excel SQL Microsoft Office BPMN EDI Git

AdoptingPython FastAPI

What hsag Heidelberger Services AG Is Building

◆Challenges

Current project demand
Lack of experienced staff
Billing process inefficiencies
Automating customer service processes
Optimizing market communication processes
Automating edi message flows
Expanding bpo business
Optimizing bpo performance
Scaling bpo operations
Managing complex customer projects

▲Active Projects

Marktkommunikation
Bilanzkreisabrechnung
Energiedatenmanagement
Ai suite
Genai bots
Billing projects
Change process projects
Data cleaning projects
Process optimization in market communication
Regulatory compliance strategy development

Hiring Activity

Steady25 roles · 7 in 30d

Department

Ops

8

Support

6

Engineering

4

Sales

2

Consulting

1

Finance

1

Operations

1

Seniority

Mid

9

Senior

6

Junior

3

Lead

2

Manager

2

Intern

1

Notable leadership hires: Customer Service Team Lead

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About hsag Heidelberger Services AG

hsag Heidelberger Services AG is a public utility-services consultancy and BPO provider headquartered in Heidelberg, Germany. Founded in 2005, the company serves energy suppliers, grid operators, and market participants with four core service lines: business process outsourcing and specialist services, marketing consulting, process and systems advisory, and digital transformation. The portfolio spans billing and settlement operations, market communication, energy data management, RPA automation, and emerging generative AI customer service. The organization supports 501–1,000 employees across Germany and maintains a geographically localized hiring footprint.

HeadquartersHeidelberg

Company Size501–1,000 employees

Founded2005

Hiring MarketsGermany

Frequently Asked Questions

What technology does hsag use for billing and settlement?

hsag operates SAP IS-U (industry standard for utilities) as the core ERP, integrated with custom layers built in Node.js/NestJS on Azure and AWS. They also maintain legacy EDI message processing infrastructure and are actively automating billing workflows.

What is hsag working on?

Active projects include generative AI bots, energy data management platforms, billing optimization, market communication process automation, EDI message flow automation, and regulatory compliance strategy. The company is also scaling its BPO business and investing in AI suite capabilities.