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About Stratum Engineering
A joint venture of Smartsys and Oskar-El, bringing together more than 50 years of engineering and manufacturing experience.
Stratum: the layers of a control system
Stratum is the Latin word for layers, the plural of strata. The broad set of our services and products covers all layers of the process to design, commission and maintain industrial control and safety systems. So when we looked for a name, that was what we came up with.
The company is a joint venture between Smartsys and Oskar-El. It was created to:
- Expand the range of products and services, and develop new ones.
- Increase customers' confidence and find new customers.
- Access greater resources: the skills of specialized staff, technology and more.
Two founders, 50% each
Our founding companies have worked in automation and electrical engineering for more than 30 years between them, and until recently had no sales department: their work came by reputation.
Smartsys
20+ years
Engineering, support and commissioning for oil and gas and petrochemical industries across the globe.
smartsys.bgOskar-El
30+ years
Engineering and manufacturing. Strategic partner of Westinghouse and engineering partner of Siemens and Schneider Electric.
oskar-el.comOur people and premises
Engineering, manufacturing and testing on one site near Sofia, with capacity we plan to double in the near future.
144 people
- 56 engineers
- 57 technical staff
- 31 administration
Our site
- Site, built-up and open area
- 18,973 m²
- Built-up area, old and new buildings
- 5,372 m²
- Old buildingsworkshop 900 · offices 2,358 · warehouse 640 m²
- 3,898 m²
- New workshop
- 1,474 m²
- Offices, old and new buildingsold 2,358 · new 146.4 m²
- 2,504.4 m²
- Factory acceptance test (FAT) area
- 430 m²

Equipment we have invested in
We build our own machines and equipment when the ones on the market do not fit our needs or are more expensive to run. We also run our own ERP system, tailored to our processes, and our own software, SmartWEB.
Factory acceptance test hall
Laboratory for testing crimping and tightening tools
Wire processing with a Komax machine
3D laser cutting
Climatic test chamber
Vision
To be the leading force in the global transition towards sustainable energy solutions, empowering communities and industries through electrical systems and innovative, reliable automation.
Mission
To commit to excellence, sustainability and innovation in every project, and to ensure the highest standards of safety, reliability and customer satisfaction through education and collaboration with all stakeholders.
Where we have worked
Projects in 31 countries across Europe, the Middle East, Africa, Central Asia and the Americas.
- Jordan
- Saudi Arabia
- Oman
- Egypt
- Greece
- Albania
- Serbia
- Romania
- Italy
- Mexico
- Germany
- Suriname
- Nigeria
- Niger
- Algeria
- Libya
- Morocco
- Kazakhstan
- Belgium
- Estonia
- Croatia
- France
- Netherlands
- United Kingdom
- Ukraine
- Pakistan
- Turkmenistan
- Uzbekistan
- Azerbaijan
- Russia
- USA