ROITI Full-service technology advisory for the energy trading sector

Our solutions

ETRM System Consultancy

ROITI was started by business analysts and the company continues to stay focused on current energy trading challenges and their solutions.

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Business Consultancy and Project Management

Over time we have been able to expand our knowledge also beyond OpenLink Endur, which allows us to support business departments.

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Cloud Engineering

We use cloud offerings for the creation of cloud-native applications, but also for migration and operation of legacy applications in a cloud infrastructure.

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Data Engineering & Business Intelligence

We help our clients to get their mission-critical data where needed, when needed.

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ETRM Software Development

We develop custom OpenLink Endur integrated solutions based on OpenJVS related to operational services, user defined simulation results, end-of-day workflows and GRID-enabled reporting.

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At a glance


Founded 2013


Over 80 business and technology experts


11 satisfied clients in Europe and US


Over 50 projects in the past 7 years


IT for Energy Trading

More about ROITI

ROITI is a full-service technology advisory focused on the energy trading sector. We support our clients on their journey to digitalization by designing, developing, and maintaining IT solutions throughout the entire wholesale and retail value chain of an integrated energy trading company. Since 2013 we have offered ETRM system integration and enhancement services, cloud migrations, development of data warehouse solutions, implementation of analytics and reporting platforms for some of the largest energy trading organizations in Europe. We have an excellent understanding of European gas, power and renewables trading, logistics, asset optimization and risk management.

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Values & Vision

Удобна локация


Френски палачинки


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What our clients & partners say

Gar nicht so mal schlecht.

Dr Sven Orlowski
CEO of EWE Trading on ROITI’s support with handling the merger of NCG and Gaspool into Trading Hub Europe (THE).

Meet the team

We typically see 2 reasons why customers address consultancies:

  • They don’t have enough manpower
  • They lack specific know-how

We are focused on addressing those issues by ensuring a very knowledgeable and delivering on promise team.

Average work experience of the team members: 10 years.

Ventsislav Topuzov

Managing Partner

Ventsi is one of the founding partners at ROITI and has been serving as CEO ever since 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.

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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.

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Irena Macheva

Service Manager

Irena joined ROITI in 2020, bringing in energy industry experience, people and process management capabilities and communication skills. She takes care of the organization and alignment of our operation services to continually provide value to our customers.

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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.

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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.

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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.

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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.

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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.

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Kejsi Jonuzaj

Team Lead Data Science

Kejsi was the first ROITI intern back in 2019 and a valedictorian of AUBG Class of 2021. Her great combination of hard and soft skills paved the way to leading the Data Science Team at ROITI. She has worked on both analytical and technical tasks, while also leading projects for our clients. She takes pride in being proactive, dedicated and always ready to take on a new challenge.

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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. She is managing all affairs of human resources, including hiring process, company benefits and preparation of internal surveys and evaluations.

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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.

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Georgi Chapanov

Team Lead ETRM InterSys

Georgi has worked on various projects across the clients’ ETRM landscape ranging from trading interfaces, to 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.

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Svetla Vasileva

Team Lead IntraSys

Svetla 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.

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Bernard Sidi

Team Lead ETRM Data Flow

Bernard 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.

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