Senior Software Engineer- (PLC​/OT - Product Delivery Richen, Baden-Württemberg, Germany

Senior Software Engineer- (PLC/OT) - Product Delivery

About The Company

GROPYUS is a technology-based construction company focused on building multi-story residential buildings. Thanks to its prefabricated building system with various design options, industrial offsite construction, and fully digitalized processes, the company manufactures aspirational, sustainable, and affordable homes using timber construction methods. GROPYUS is using scalable construction and manufacturing solutions to tap into a future market, boost Europe’s strength in innovation, while also playing a substantial role in improving sustainability.

About the Role:

You will be part of a highly collaborative product team working at the core of our manufacturing facility, transforming digital models into physical elements at scale.

Product Teams at GROPYUS own what they build, including underlying infrastructure, build pipelines, automated testing, release and rollout management, monitoring, and support. You will bring your experience in working with PLCs and/or other OT systems like e.g. robots, into the team.

As a Senior Software Engineer, you will help evolve manufacturing systems from vendor-driven PLC and robot logic toward a modern, software-defined architecture. A central part of the role is to understand existing control logic, abstract it into maintainable software components, and gradually migrate relevant functionality into Python-based services and simulation-ready systems.

Furthermore, our teams are also responsible for operating and troubleshooting the software they have developed during working hours of the factory.

• Analyze and explain existing PLC (Siemens TIA Portal), robot (KUKA KRL), and OT code from external vendors, and help translate that knowledge into shared engineering understanding
• Design and implement Python-based software components that replace, abstract, or orchestrate legacy PLC and robot logic
• Build maintainable, testable, and well-structured services with a strong focus on code quality, modularity, and long-term ownership
• Bring a operational mindset to monitor, maintain, and improve software uptime including reliable updates, latency, and efficiency
• Act as a bridge between digital product delivery & physical logistics and manufacturing systems, ensuring both are aligned and integrated
• Help define, monitor and evolve SLAs/SLOs as well as other important KPIs like e.g. OEE for critical systems

• You are an experienced software engineer with very good coding skills in Python or another modern object-oriented programming language such as C++ or C#.
• You have a solid understanding of software design, abstraction, modularity, and maintainable system architecture.
• You have experience writing clean, testable, production-grade code and applying modern software engineering practices such as code reviews, automated testing, and CI/CD.
• You are confident working in operationally critical environments where reliability, observability, and controlled change management matter.
• You have the ability to understand and gradually modernize legacy systems without losing business continuity.
• You are able to communicate effectively across software, manufacturing, and operations domains.

• You have experience with PLC programming, industrial robots, or OT systems.
• You are familiar with KUKA KRL, OPC-UA, MQTT, or similar industrial integration technologies.
• You have worked in logistics, manufacturing, or other production-critical environments.
• You are familiar with simulation-driven development or digital twins.

• An unlimited contract with 30 vacation days.
• Flexible, hybrid work: You can work from home or come into the office on the schedule that works best for you. Feel like traveling and working from another location? No problem. Tune into meetings and work from abroad for up to 40 days per year. In addition, flex hours allow you to prioritize important moments in your day.
• Attractive perks and benefits: We offer a company pension scheme, language courses (English/German), and employee discounts with selected sustainable brands. Furthermore, our external partners in mental health…