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Senior Mendix Developer (f/m/d)

Join Siemens Energy in Mülheim as a Senior Mendix Developer. Lead low-code app development for 30+ factories, integrating SAP and AWS. Benefit from flexible work, company pension, and shareholder opportunities in a global energy leader.

Hybrid Full time UTC+02:00 Updated 136 days ago

Applies on arbeitsagentur.de

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Building smart, low-code applications that reshape how 30+ manufacturing factories operate every day sounds like a great deal? As part of Siemens Energy's Grid Technologies team, you'll design and deploy end-to-end Mendix solutions that turn complex business needs into intuitive digital tools across production, sales, and quality domains. As Senior Mendix Developer (f/m/d) you will collaborate with stakeholders worldwide, use best practices, and grow a network of Mendix developers to scale your solutions globally. This is your opportunity to drive meaningful change in an international manufacturing environment where your work directly accelerates operational excellence.

How You'll Make an Impact

  • Development of full-scale Mendix applications using Mendix Studio Pro; from domain modeling and microflow logic to UI/UX design to ensure security, performance, and scalability across a global manufacturing network
  • Integration of enterprise systems such as SAP and AWS by building reliable RESTful API connections and web services that keep critical business processes running seamlessly
  • Leading digital transformation initiatives by converting existing visualization tools into fully functional smart applications, applying the organization's digitalization methodology to automate manual workflows and optimize process chains
  • Partnering with business units across 30+ factories to define requirements, manage stakeholder expectations, and translate operational needs into scalable low-code solutions with measurable impact
  • Building and nurturing a global Mendix developer community within Grid Technologies factories, acting as a role model for best practices and supporting the full software development lifecycle from testing through to deployment and enhancement

What You Bring

  • A Bachelor's or Master's degree in Computer Science, Business Informatics, or a related technical field
  • Many Years of hands-on experience in Mendix development, a Mendix Expert Developer Certification is a plus
  • Many years of experience deploying applications in large, international manufacturing or enterprise environments, with solid knowledge of Java, SQL, domain modeling, and UI/UX design principles
  • Strong enterprise integration skills, including RESTful APIs, AWS, and SAP connectivity, along with a working understanding of data modeling and systems development lifecycle
  • Experience working in agile environments with confidence in stakeholder management, strategic planning, and problem-solving across cross-functional, globally distributed teams
  • Fluency in English is required; proficiency in German is a strong advantage

About the Team

Our Grid Technology division enables a reliable, sustainable, and digital grid. The power grid is the backbone of the energy transition. Siemens Energy offers a leading portfolio and solutions in HVDC transmission, grid stabilization and storage, high voltage switchgears and transformers, and digital grid technology.

At Siemens Energy, we are more than just an energy technology company. With ~100.000 dedicated employees in more than 90 countries, we develop the energy systems of the future, ensuring that the growing energy demand of the global community is met reliably and sustainably. The technologies created in our research departments and factories drive the energy transition and provide the base for one sixth of the world's electricity generation.

Our global team is committed to making sustainable, reliable, and affordable energy a reality by pushing the boundaries of what is possible. We uphold a 150-year legacy of innovation that encourages our search for people who will support our focus on decarbonization, new technologies, and energy transformation.

Find out how you can make a difference at Siemens Energy: https://www.siemens-energy.com/employeevideo

Our Commitment to Diversity

Lucky for us, we are not all the same. Through diversity we generate power. We run on inclusion and our combined creative energy is fueled by over 130 nationalities. Siemens Energy celebrates character - no matter what ethnic background, gender, age, religion, identity, or disability. We energize society, all of society, and we do not discriminate based on our differences.

Rewards/Benefits

  • In addition to an attractive remuneration package in line with the market, you can expect an attractive employer-financed company pension scheme
  • We also offer the opportunity to become a Siemens Energy shareholder
  • We offer our employees the opportunity to work flexibly and remotely, and our inspiring offices provide space for collaboration and creativity
  • The professional and personal development of our employees is very important to us. We provide them with the opportunities to learn and develop in a self-determined way, various attractive programmes and learning materials are available for this purpose
  • In relation to the "compatibility of family and work", we have a wide range of offers, e.g. flexible working time models, childcare places at many locations, the possibility of trial part-time work or even a sabbatical

We value equal opportunities and welcome applications from people with disabilities.

Typical pay for similar roles

Estimate
€45,150–82,000 annually
Germany · 35 similar jobs

The middle half of pay advertised on Rejobs for this group over the last 24 months. This employer has not stated a salary.

About this role

Posted
24 May 2026
Updated
24 May 2026
Job type
Full time
Workplace
Hybrid
Sectors
Working hours
UTC+02:00
Experience
Many years of hands-on experience in Mendix development

About Siemens Energy

Company Overview

Name

Siemens Energy AG

Headquarters

Munich, Germany

Founded

2020

Size

Approximately 103,000 employees worldwide (source: siemens-energy.com). Revenue of 39.077 billion in fiscal year 2025 (source: siemens-energy.com).

What They Do

Siemens Energy is a global energy technology company covering nearly the entire value chain of energy, from power and heat generation to transmission and storage (source: siemens-energy.com). The company offers a broad portfolio of products and services, including gas and steam turbines, generators, transformers, high-voltage direct current (HVDC) transmission, grid technologies, as well as industrial electrification and decarbonization solutions (source: siemens-energy.com). Its main business areas include Gas Services, Grid Technologies, Transformation of Industry, and Siemens Gamesa, which holds a significant position in the wind energy sector (source: siemens-energy.com). Siemens Energy serves utilities, grid operators, industrial companies, power producers, and infrastructure developers worldwide and estimates that about one-sixth of global power generation is based on its technologies (source: siemens-energy.com).

Projects & Track Record

In recent years, Siemens Energy has completed numerous significant projects, including the construction of an offshore converter system connecting North Sea wind farms to the German power grid in collaboration with Neptun Smulders Offshore Renewables for 50Hertz (source: reuters.com). In June 2026, it secured a 2-GW offshore contract for the North Sea Connector 2 project from 50Hertz (source: energynews.pro). Another major project is the 2-GW HVDC link Eastern Green Link 4 between Scotland and England, with a contract value of around 3 billion pounds, scheduled for completion by 2033 (source: energynews.pro). In the steam turbine sector, Siemens Energy is delivering 20 turbines with a total capacity of 1 GW for AI data centers in cooperation with Babcock & Wilcox (source: finance.yahoo.com). Additionally, the company supplies Petrobras with energy and gas compression systems for FPSO units in Brazilian offshore fields (source: finance.yahoo.com).

Outside Europe, Siemens Energy is involved in Oman with the delivery and maintenance of equipment for two 2.6-GW gas power plants in Misfah and Duqm (source: energynews.pro). In the USA, two energy projects totaling 2 GW were agreed upon in 2025 with Fermi America in connection with a private 11-GW AI energy campus (source: energynews.pro).

Recent Developments

In 2026, Siemens Energy significantly improved its order intake, especially in Gas Services, where 102 gas turbines were booked in the first quarter and 12 GW were converted from existing reservation agreements, with an additional 12 GW of new reservations (source: siemens-energy.com). The revenue forecast for fiscal year 2026 was raised from 11-13% to 14-16%, and the profit margin before special items was increased to 10-12%, reflecting strong demand and solid execution (source: siemens-energy.com). Furthermore, Siemens Energy is investing 1 billion USD in North America, creating highly skilled jobs to further expand its manufacturing and industrial presence (source: siemens-energy.com).

Working There

Siemens Energy offers a wide range of career opportunities in fields such as engineering, manufacturing, project management, service, digitalization, sales, finance, human resources, and supply chain management (source: siemens-energy.com). The corporate culture is shaped by a global presence in over 90 countries with approximately 21,200 production sites, offering diverse opportunities in project-driven and production-intensive roles (source: siemens-energy.com). Key recruitment locations include the headquarters in Munich as well as Orlando, Florida, USA (source: siemens-energy.com). Desired qualifications include mechanical and electrical engineering, energy systems, control technology, software development, manufacturing, project management, field service, procurement, and industrial operations (source: siemens-energy.com).

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