Greenflash Tech Stack

AI-driven energy management for industrial decarbonization

Services for Renewable Energy Essen, Nordrhein-Westfalen 51–200 employees Founded 2020 Public Company

Greenflash builds decentralized energy systems for industrial and commercial customers, anchored by Greencore AI—a self-learning software layer that optimizes power supply and control at unprecedented granularity. The stack (Java, Spring Boot, PostgreSQL, TimescaleDB, Azure/AWS/GCP) reflects a data-intensive backend handling real-time grid signals (Modbus, OCPP, IEC 60870-5-104), while the engineering-heavy hiring mix (15 engineers across 24 open roles) and active projects spanning PV, battery storage, EV charging, and forecasting suggest the company is scaling both product depth and go-to-market in parallel.

Tech Stack 28 technologies

Core StackLinux Java PostgreSQL TimescaleDB GitLab Docker AWS Jira Confluence Dynamics 365 Microsoft Office Excel PowerPoint Modbus OCPP IEC 60870-5-104 VPN Firewall VLAN Raspberry Pi Arduino ESP32 Spring Boot Azure GCP IntelliJ IDEA LinkedIn Microsoft Dynamics 365

What Greenflash Is Building

◆Challenges

Sourcing components for projects
Meeting demand for co₂-neutral solutions
Optimizing energy supply
Identifying upsell opportunities
Coordinating maintenance
Scaling processes for growth
Making companies more sustainable
Acquiring large b2b customers
Expanding market share in renewable energy
Optimizing cost and quality

▲Active Projects

Development of integrated pv, battery, and charging infrastructure
Certification processes
Pv-anlagen
Batteriespeicher
Ladeinfrastrukturen für e-mobilität
Integration of energy management systems into customer installations
Performance optimization of energy management systems
Commissioning support for energy management systems
Historical data processing and forecasting
Simulation for economic viability

Hiring Activity

Decelerating25 roles · 4 in 30d

Department

Engineering

Ops

Sales

Executive

Finance

Seniority

Mid

Junior

Intern

Senior

Manager

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About Greenflash

Greenflash develops intelligent, decentralized energy systems that reduce operating costs and CO₂ emissions for mid-market industrial and commercial customers. The business operates as a full-service provider, pairing hardware integration (solar arrays, battery storage, charging infrastructure) with proprietary AI-based energy management software. Founded in 2020 and currently operating from four German offices (Lingen, Essen, Munich, Hamburg), the company employs roughly 100 people. Revenue-driving projects include system integration, commissioning support, and performance optimization; strategic initiatives focus on scaling production processes, expanding customer acquisition, and deepening market share in the renewable-energy segment.

HeadquartersEssen, Nordrhein-Westfalen

Company Size51–200 employees

Founded2020

Hiring MarketsGermany

Frequently Asked Questions

What tech stack does Greenflash use?

Java, Spring Boot, PostgreSQL, TimescaleDB, Docker, and cloud platforms (Azure, AWS, GCP). Operations and communications use industrial protocols: Modbus, OCPP, IEC 60870-5-104, plus standard IT infrastructure (Linux, VPN, Firewall).

Is Greenflash hiring engineers?

Yes. 15 of 24 active roles are engineering positions (mix of mid-level, junior, and senior), though hiring velocity is decelerating. All roles are based in Germany.

Where is Greenflash headquartered?

Essen, Nordrhein-Westfalen, Germany. The company also operates offices in Lingen, Munich, and Hamburg.