Serbia
Long-term collaboration since 2002: lifecycle support of Honeywell platforms, from early generations to Experion PKS, system migrations and the SmartWEB roll-out.
“We highly recommend SmartSys and Stratum Engineering as trusted, long-term partners for demanding automation, control system, and digitalization projects in the energy and process industries.”
NIS a.d. Novi Sad, Head of the Automation Sector
Bulgaria
Major overhaul, commissioning and upgrade of Honeywell systems, including cybersecurity measures, in 2025.
“These efforts have transformed the refinery's Honeywell infrastructure into one of the most sophisticated, secure, and modern Honeywell-based systems in Europe.”
Honeywell Bulgaria, Managing Director
Kazakhstan
TCO KTL NBH migration project: engineering, FAT and SAT, and site implementation.
“The SmartSys team demonstrated excellent coordination, proactive communication, and strong ownership throughout the project lifecycle.”
Honeywell Process Solutions Uzbekistan, Senior Engineering Manager and Country Manager
USA
Honeywell legacy system upgrade projects at Marathon Petroleum refineries, 2019 to 2025.
“Stratum Engineering consistently demonstrated outstanding professionalism, technical expertise, and a wide range of capabilities throughout the project lifecycle.”
Statistics & Control, Inc., Vice President of Operations
Qatar
DCS, ESD, HMI and network systems, with a large volume of design changes during FAT.
“It was impressive how seamlessly you were able to reallocate expertise across DCS, ESD, HMI, and Network systems to adapt to the rapidly evolving requirements during FAT.”
Honeywell Technology Solutions Qatar, PAS Leader Qatar and Oman, and Project Manager
Reference letters for Stratum Engineering and its founding companies, Smartsys and Oskar-El.