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We pioneered the Organic SolidFlow battery

CMBlu started in 2011 as a research-driven project with the goal of storing electrical energy in arbitrarily large quantities in an environmentally friendly, sustainable and cost-effective way. Since then, we have continuously expanded our broad IP portfolio and expertise in large-scale energy storage.

Today, we are one of the leading organic flow battery companies headquartered in Alzenau, 30 km from Frankfurt Airport. With our groundbreaking technology, we will drive the energy transition, together with our partners, customers and most importantly: with our employees!

We are a highly motivated, committed and fast growing team of over 180 employees. We are now preparing for the market launch of our products and further professionalizing our organization.




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An important component of our batteries is the battery management system (BMS). The development of this software for control and regulation requires interdisciplinary cooperation with colleagues from specialist areas such as chemistry, hydraulics, electrical engineering, construction and testing. A high degree of discipline and initiative in implementation is a mandatory requirement. You can expect the opportunity to actively shape the area of software development.

As a PLC developer for our battery management system, you can expect exciting and responsible tasks with creative scope:

PLC development with integration of sensors and actuators as well as functionality for control and regulation of our organic flow batteries

Gathering and structuring the requirements with the departments

Independent realization and design of requirements in the PLC

Energy and pioneering spirit – what we need from you

You are highly motivated and want to be part of the new energy storage technology from the beginning?

Completed studies in computer science/electrical engineering/mechatronics or comparable qualification acquired in practice

At least 3 years of experience in PLC development

Very good knowledge in handling Beckhoff TwinCAT 3

Experience in the connection of interfaces (e.g. REST, Modbus TCP, OPC UA)

Experience with a version control system, preferably Git

Basic understanding of web technologies and databases

Knowledge in handling Siemens TIA Portal desirable

Flexibility and diligent approach to work

Pleasure in actively shaping a "greenfield" site

Openness and willingness to learn new technologies

To strengthen our internal know-how, we are looking for a Quality Engineer (m/f/d) who would like to contribute his/her experience in the field of quality management in a young and aspiring corporate environment and be involved in the design of processes and procedures from the very beginning.

Ensuring the execution of internal and external audits and the processing of the documented measures

Ensuring the processing of internal and external customer and supplier complaints and objections

We offer exciting and responsible tasks with creative scope:

Supervision of internal and external quality auditing

Executing supplier audits / supplier evaluations from a quality perspective

Participation in the selection of suppliers

Monitoring of internal processes with regard to conformity of the standards to be certified (ISO 9001 / 14001 / 45001)

Support of the business units in the definition, implementation and follow-up of processes

Handling of customer and supplier complaints


At least 3 years of vocational training completed

Ideally completed further training as a master craftsman, technician or comparable

Ideally training as a quality management specialist (QMF) and/or quality management representative (QMB) or quality management auditor (QMA)

Knowledge of the standards commonly used in the company (ISO 9001 / 14001 / 45001)

Experience in conducting internal and external audits, including customer and supplier audits

Knowledge and experience in implementing, tracking and improving processes

Experience in dealing with customers and suppliers as well as in handling customer and supplier complaints

Good knowledge of German and English, both written and spoken

Confident handling of Microsoft Office programs (Word, Excel, PowerPoint, Outlook, Access)

Team player who enjoys cross-functional cooperation

Ability to grasp problems quickly and strong analytical thinking skills


Quality Engineer (m/f/d) Focus: Internal / External Audit Management and Complaint Management

Quality Engineer (m/f/d) Focus: Internal / External Audit Management and Complaint Management | CMBlu Energy AG

An important component of our batteries is the software. Our batteries are controlled by a battery management system, monitored via an over-the-air connection and will be orchestrated on an IoT platform in the future.

As a software developer, you can expect exciting and responsible tasks with creative scope:

Design and development of the battery management system in Go

Control and regulation of various hardware components

Provision of interfaces for our customers

Development of generic interfaces for our battery test systems in Angular

Connection of the production plants to local databases and visualization of the data

Support for cross-project issues such as the internet connection of battery systems (M2M)

Maintenance of various hardware and software systems (e.g. Unraid, Grafana, GitLab, Apache NiFi, InfluxDB)

Job-related requirements - our must-haves

Completed studies in computer science, completed apprenticeship or comparable qualification acquired in practice

At least three years of experience as a software developer

Very good knowledge of a backend technology, preferably Go

Good knowledge of database systems (SQL, NoSQL and time series)

Experience in the connection of interfaces (REST, MQTT, OPC UA)

Experience with version control system Git

Nice-to-haves - with this you convince us

Experience in the administration of Linux servers and with the Linux command line

Experiance with continuous integration / continuous deployment

Occasional willingness to travel locally and abroad (<10%)

Software Developer (m/f/d) | CMBlu Energy AG

For the further development of the power electronics of our Organic SolidFlow battery systems, we are looking for a committed, open-minded and curious electrical engineer (m/f/d). In this key role, you will have the opportunity to accompany and actively shape a new energy storage technology from the very beginning.

Planning and documentation of plants of our Organic SolidFlow battery systems

Further development and optimization of existing systems

Independent development of innovative solutions

Independent creation and tracking of project plans, taking into account deadlines, quality and costs

Close cooperation and coordination with the different development departments

Successfully completed studies in electrical engineering, power engineering or comparable qualification

Several years of professional experience in the field of low-voltage technology / low-voltage switchgear, knowledge of medium voltage desirable

Knowledge with inverters / frequency converters, at best with PV integrations

Experience in the construction of power distribution systems in buildings & plants or in network setup

Interest in working in new subject areas with a hands on mentality

Experience in creating circuit diagrams with EPLAN

Sense of responsibility and diligent approch to work

Ability to grasp problems quickly and strong analytical thinking skills

Electrical Planner / Designer (m/f/d) | CMBlu Energy AG

An important component of our batteries is the battery management system (BMS) and its subcomponents. The development of this software for control and regulation requires interdisciplinary cooperation with colleagues from specialist areas such as chemistry, hydraulics, electrical engineering, construction and testing.

As an embedded software developer, you can expect exciting, varied and responsible tasks:

Development of software for the integration of sensors and actuators as well as functionality for the control and regulation of our Organic SolidFlow batteries

Provision of interfaces for our customers, other departments and building up software systems

Implementation of various measurement and control tasks in smaller projects

Completed studies in computer science/electrical engineering/mechatronics or completed vocational training with comparable qualification acquired in practice

At least three years of experience in embedded C/C++ development

Experience with communication and transmission protocols

Experience with the version control system Git

Experience with Espressif microcontrollers

Experience with Modbus RTU, Modbus TCP, LIN, CAN

Embedded Software Developer (m/f/d) | CMBlu Energy AG

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We at CMBluhave one important goal: We want to make the energy revolution happen. And we have jobs for people who are just as passionate about this challenge as we are.

Your career at CMBlu

We pioneered the Organic SolidFlow battery

IT & Software

Quality

Product Development

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