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Haulogy Tech Stack

Energy and utilities software for billing, grid management, and flexibility optimization

IT Services and IT Consulting Baulers, Walloon Region 51–200 employees Founded 2005 Self-Owned

Haulogy builds modular software for energy retailers, distribution operators, and utilities navigating the energy transition. The stack is anchored in Java/Spring and Python with Kafka and NATS for event-driven workflows, and they're actively migrating Go components back to Java while scaling data handling for market feeds — a signal of operational complexity outpacing their current architecture. Engineering dominates the hiring mix, paired with focused work on AI-driven flexibility optimization and grid-level demand management.

Tech Stack 12 technologies

Core StackPython Java Spring Maven PostgreSQL Kafka RabbitMQ NATS REST SOAP Git

AdoptingGo

What Haulogy Is Building

◆Challenges

Optimizing energy costs against volatile market prices
Increasing grid capacity to host renewable energy sources
Migration of go parts to java
Energy transition challenge
Optimizing operations for energy suppliers
Streamlining billing processes
Improving market interactions
Processing massive market data
Ensuring data integrity
Managing data exchange

▲Active Projects

Flex.boost ai-based software
Flex.guard platform
Re-architecture of key component migrating go to java
Implement event-driven architectures via nats
Energy contract lifecycle management
Market data gateway
Invoice generation and dunning
Market gateway tool
Energycomm platform
Ameo platform

Hiring Activity

Steady8 roles · 3 in 30d

Department

Engineering

4

Data

1

HR

1

Product

1

Support

1

Seniority

Mid

6

Intern

1

Manager

1

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About Haulogy

Haulogy develops software platforms for the energy and utilities sector, covering flexibility management, billing, network operations, and energy sharing. Their product portfolio includes modules for metering data management, billing for energy retailers, distribution grid operations, market gateways, and data exchange. The company serves distribution system operators and energy suppliers across Western Europe, operating as a 51–200-person team based in Belgium and founded in 2005. They operate as a self-owned company providing both software and long-term consulting services.

HeadquartersBaulers, Walloon Region

Company Size51–200 employees

Founded2005

Hiring MarketsBelgium, France

Frequently Asked Questions

What tech stack does Haulogy use?

Java, Python, Spring, PostgreSQL, Kafka, NATS, RabbitMQ, REST, and SOAP. They're currently migrating Go components to Java and exploring Go for new services.

What is Haulogy working on?

AI-based flexibility optimization (flex.boost), grid management platforms, event-driven architecture implementation via NATS, energy contract lifecycle management, market data gateways, and invoice generation with dunning workflows.