Leadership Team

Ventsislav Topuzov

Managing Partner

Ventsi is one of the founding partners at ROITI and has been serving as CEO ever since the inception of the company. Prior to founding ROITI, Ventsi worked 5 years for OpenLink in Berlin, Germany where he helped numerous clients on Endur implementation projects. His career in consulting within the energy sector started back in 2005 when he worked on a post-privatization restructuring project for a utility serving 1.1 mln customers in Bulgaria.

Lyubomir Yordanov

Managing Partner

Lyubo is one of the founding partners at ROITI and manages the finances of the company as CFO. Prior to finding ROITI, Lyubo worked on OpenLink Endur implementation projects for energy trading companies in Germany and the Scandinavian region. Prior to focusing on the energy market, Lyubomir worked as credit manager in one of Bulgaria‘s largest banks, where he was responsible for the management of the bank’s corporate clients credit portfolio. His career started on the Bulgarian Stock Exchange, where he worked over 5 years as Senior Trade Expert, responsible for statistics reporting, official publications of the exchange and trading supervision.

Irena Macheva

Service Manager

Irena joined ROITI in 2020 as a Service Manager. She brought in versatile management competencies and valuable communications skills, coupled with extensive energy industry experience gained in power generation infrastructure construction and rehabilitation projects. She had also been working as an energy-sector expert for non-profit organizations for several years with a focus on regulation. Irena is a certified ITIL Managing Professional. She is passionate about implementing the ITIL framework’s best practices for the ongoing improvement of ROITI’s operation and support services towards continual value creation for our customers. 

Eroslav Andreev

Team Lead ETRM Dev

Eroslav has been part of ROITI since 2016 and joined the company as one of the first technical experts. For the last two years, Eroslav has been managing the ETRM developers’ team. With more than 15 years of experience in Java, C#, .Net, SQL and other technologies, Eroslav has been an integral part of growing ROITI’s technology know-how. Prior to joining ROITI, he worked for over 9 years as a technical expert on various ERP and CRM implementations within the pharma industry.

Konstantin Grigorov

Team Lead Business Solutions

Konstantin joined ROITI after six years at RWE in Germany, where he worked in risk controlling and commodity accounting. He is currently managing our business solutions team and is one of the main business domain know-how capacities in the company. Konstantin has worked on projects, encompassing the entire value chain of an energy trading organization, on both wholesale and retail markets. He holds an MA focused on energy economics, environmental economics and controlling, production and industrial information management.

Ivona Videnova

Team Lead ETRM Solutions

Ivona joined ROITI in 2017, after a PhD in Economics from Cardiff University, UK. With ROITI, Ivona worked on different implementation and upgrade projects with OpenLink Endur and RightAngle where she showed great leadership skills and was quickly promoted to team lead of ROITI’s ETRM solutions team. Ivona has obtained multiple, international certifications for finance, investment, economy, and leadership. Prior to joining ROITI, she worked in the financial sector in analytics and reporting.

Georgi Topalov

Team Lead Cloud Engineering

Georgi joined ROITI as a junior developer, after a short stay with an international technology company. His outstanding work attitude and profound technology knowledge helped him rise quickly through the ranks and reach his current position as team lead of ROITI’s cloud engineering team. Georgi also manages our partnership program with Microsoft and all Azure application subscriptions.

Nikola Toshev

Team Lead Data Engineering

Niki joined ROITI in 2018, after finishing his double major in Computer Science and Economics from the American University in Bulgaria. His dedication to help business processes by allowing effective and efficient insight from data and his strong quantitative background led to his promotion as team lead of the data engineering team at ROITI. Nikola is very connected with his alma mater and gave a half-semester long course on the topic “Distributed Computing Using Apache Spark”.

Kejsi Jonuzaj

Team Lead Data Science

Kejsi was the first ROITI intern back in 2019. Since then, she continued to work part-time while double-majoring in Computer Science and Mathematics at AUBG. She was the valedictorian of AUBG Class of 2021 and received outstanding achievement in Mathematics. Her great balance between hard and soft skills paved the way to leading the Data Science Team at ROITI. She has worked on both analytical and technical tasks and has led various projects for our clients. She takes pride in being proactive, dedicated and always ready to take on a new challenge.

Georgi Chapanov

Team Lead ETRM InterSys

Georgi joined ROITI right after graduating from AUBG with a double major in Economics and Business Administration and has been part of the company for over 4 years. Since then he has worked on various projects across the clients’ ETRM landscape ranging from trading interfaces, new product implementation and upgrade projects for some of the largest energy companies in Europe. Now he leads a team at ROITI focused on intersystem integration, implementation and optimization for trading, operations and back-office tools and platforms within the ERTM world while utilizing new technologies.

Svetla Vasileva

Team Lead ETRM IntraSys

Svetla did her Master’s degree in Accounting and Control at Sofia University, after doing her Bachelor’s in Construction Business and Entrepreneurship at the University in Economics in Varna. She has been with ROITI for more than 2 years. She gained experience across different Endur projects and service support duties. She is a good communicator and is proactively engaged in continuous improvement of the processes.

Bernard Sidi

Team Lead ETRM Data Flow

After finishing his Master’s in the UK, Bernard returned to Bulgaria and started working for a Swiss energy company, after which he came to ROITI in 2019. He has worked for three of ROITI’s clients on different projects and services and now leads a team at ROITI, focusing on the end-to-end data flow. He is dedicated to streamlining the systems he is working on and expanding the company’s knowledge base.

Petar Nikolov

Team Lead Business Intelligence

Petar joined ROITI as a Junior BI Consultant in 2020 after obtaining a Master’s degree in Business Intelligence from Aarhus University, Denmark, with experience in DWH and BI solutions, and interests and academic knowledge in data science and trading. With his cultivated soft skills, business acumen and analytical thinking, he tailors approaches to develop cross-platform solutions and bridge the gap between Business and IT. Since joining, he has implemented a plethora of large-scale reporting solutions that have contributed to the overall solutions structure at ROITI. His diverse background and his deep knowledge of the topics he had encountered, make him a great fit for customer-facing Business Intelligence work.

Radoslav Kosturkov

Team Lead Cloudy Java Beans

Radoslav joined the company 3 years ago as a Junior Developer.
His dedication to work and strive to be better both technologically and communion-wise, helped him climb company steps to higher ranks and now he  manages the sub-team to the Cloud Software Engineering Team: the Cloudy Java Beans Team.
Committed to ensuring the satisfaction of colleagues and customers alike, Radoslav strives to create a positive impact.

Maria Paskaleva

Manager, Human Resources

Maria joined ROITI in 2018 after graduating from the American University in Bulgaria with a double major in Journalism and Mass Communications, and Politics and International Relations. In 2020 she also took a course in Human Resources, by the American University in Bulgaria as part of the EMBA program. She likes to research each new topic that arises and figure out the right approach that should be used at ROITI, after discussing it with the team. Maria is managing everything related to human resources at ROITI. She is responsible for the hiring and on-boarding process, preparation and execution of internal assessment surveys, and employee satisfaction levels, as well as organization of the yearly reviews.

Veselina Kalpazanova

Head of Administration

Vesi is with ROITI since 2014 and together with her team manages all our processes, subscriptions, inventory, supplies and travel accommodations. Vesi is exceptionally well organized and always ready to help with any possible organizational inquiry. She has saved us from sleeping on any given European airport on multiple occasions and always knows where to find even the smallest of items that any of our team could need to perform his work to his best. She holds an MA in Economics and Management in Energy from the University of Sofia, Bulgaria.

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