About SKL Engineering
About us – We are a dedicated engineering firm with two locations in Germany – regionally rooted, yet focused firmly on the future. As part of the Rootworx Group, we combine technical expertise, many years of experience, and innovative ideas to actively help shape the energy transition.
We are passionate about planning modern infrastructures and energy-efficient systems – with a particular focus on green hydrogen as a key technology for a climate-friendly future. Whether energy technology, petrochemicals, general plant engineering or environmental and safety technology: we combine a detailed technical understanding with sustainable thinking.
What motivates us? The desire to work with our customers to realize meaningful projects that not only work today – but will also last tomorrow. As part of a strong network, we are convinced that only those who think boldly can create real change. That’s why we don’t just plan systems – we shape the future.
Our history – market expertise for more than 60 years

Founding & Origins
Heavy Machinery Construction Combine (german Schwermaschinenbau) “Karl Liebknecht”, or SKL for short
- An engineering company of the former GDR
- Focus: Petrochemicals & Backup Power Systems
Internationalization
Comprimo Deutschland, Hannover
- A branch of Comprimo B.V., Netherlands
- Provided engineering services for Shell/Esso in Hannover and Mobil Oil in Celle
- Focus: Gas & Oil Industry
Stork Technology Group
Integration in Stork
- Publicly Listed Technology Group
- Industries: Natural Gas & Oil, Chemical Industry, Food & Pharmaceuticals, Energy, Nuclear Power, Aerospace
Integration into Jacobs
Acquisition by Jacobs (USA)
- Headquarters: Pasadena, California
- Comprehensive Engineering Portfolio for: Industry, Commercial Sector & Public Clients
Independence & Realignment
Founding: SKL Engineering & Contracting GmbH, Hannover
- Drawing on 30 years of market experience
- Expansion of locations: Heide (Holstein) and Magdeburg
Shaping the Future
Renaming: SKL Engineering GmbH
- New corporate structure & strategic focus
- Focus: Hydrogen Technology
- Development of a decentralized organization with stable value chains
Continuous Company Development
Continuous Company Development
The foundation of our long-term success at SKL Engineering lies in a strong commitment to quality and safety – supported by a certified management system according to DIN EN ISO 9001:2015 and SCC**:2021.
Quality, reliability, motivated employees, and an efficient organizational structure ensure professional project execution at the highest level.
Current DIN EN ISO 9001 Certificate (PDF)
Our current certificate according to DIN ISO 9001:2015
Certificate No. K-0214894 dated December 5, 2023, valid until December 4, 2026
Current SCC** Certificate (PDF)
Our current certificate according to SCC**
Certificate No. K-0214895 dated November 13, 2023, valid until November 12, 2026
About our team
Our employees bring technical expertise from a wide range of engineering disciplines and work hand in hand to implement complex projects efficiently and reliably. The SKL Engineering team specializes in process engineering – including process simulation, process engineering calculations and regulatory engineering. In mechanical and apparatus engineering, we look after both static and rotating plant components.
In the field of measurement, control and regulation technology, we develop sophisticated control and regulation concepts through to complete control technology. Our electrical engineering specialists implement projects in the areas of low, medium and high voltage and also take care of fire alarm systems, lightning protection, earthing and equipotential bonding. Our piping technology covers the entire spectrum from design and layout to support and material take-off through to stress calculations.
Our range of services is complemented by sound expertise in structural engineering, civil engineering and steel construction as well as building permit planning. Each project is managed by experienced specialists in project management and project controlling – for a smooth process, adherence to deadlines and transparent processes.
Our employees bring technical expertise from a wide range of engineering disciplines and work hand in hand to implement complex projects efficiently and reliably.
The SKL Engineering team specializes in process engineering – including process simulation, process engineering calculations and regulatory engineering. In mechanical and apparatus engineering, we look after both static and rotating plant components.






