Modernizing with purpose: Siemens Energy’s low-code journey from legacy to agility
Agile app factory with Mendix and Atos

At a glance

Outcomes
- Established a governance model to guide low-code adoption at scale
- Modernized key business applications across HR, order management, and finance
- Delivered 30+ enterprise applications using the Mendix low-code platform
- Deployed an energy tracking solution across 1,300+ locations for improved sustainability insights
Siemens Energy is a multinational conglomerate operating across energy, healthcare, transportation and automation sectors, with core expertise in technology, engineering and industrial manufacturing.
Client Challenge
Keeping applications current is essential for enterprises to remain competitive and accessible. Yet, aging systems nearing end-of-life often demand costly updates, customizations, and support to retain business value.
A leading high-tech manufacturer sought a scalable, digitally capable solution to replace such legacy applications—one that supports remote access and modern work environments. The Mendix low-code platform was selected for its rapid development potential, but the company required expert support for implementation and sustainable operating model design.
Solution
The manufacturer selected Atos as its systems integrator to implement Mendix as its in-house rapid application development platform. Together, they reimagined operations at the development center, enabling a faster, more efficient app factory model.
Key to this transformation was adopting Agile methodologies and standardizing processes for demand management, scoping, estimation, and application proposals. Leveraging its Mendix expertise, Atos defined best practices and an implementation checklist to streamline delivery.
Additionally, Atos’s partnership with Mendix empowers the manufacturer to scale low-code development for enterprise-wide hyper-automation and decarbonization.
Business Benefits
Using Mendix, a low-code platform, the company has partnered with Atos to rapidly develop dozens of modern, scalable applications—replacing outdated systems and enhancing legacy modernization, customer engagement, and operational efficiency.
Quick wins include a digital tool for IT security teams and an HR app that streamlines multiple processes into one workflow. With 90% of apps built in just 3 weeks to 3 months, the initiative enables faster user delivery, improved transparency, and sustained agility through a scalable development model.
Why Atos
Atos Group is a global leader in digital transformation with c. 72,000 employees, operating in 68 countries. The purpose of Atos is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.