Meet our team

We head and amazing journey coming where we are today, thanks to a wonderful and passionate team that we have in our company
Mihai Darzan
Mihai DarzanCEO &
In each successful company, you need a person with vision and passion about what his doing. It’s better when that is coming from up to bottom. Mihai has proven competences in the computer software industry. Skilled in Energy Markets, Power Plants, Energy Efficiency, Quality Assurance, and Electricity. “Every day is full of experiences from which I try to extract the best”
Otilia Calugareanu
Otilia CalugareanuManaging Partner
Experienced professional with extensive track record in business operations, strategy and development, with a demonstrated history in IT&Software and B2B publishing, Otilia has an entrepreneurial approach of business, focused on results and finding solutions. With a proven experience in managing major clients in Power and Gas, FMCG, retail and HORECA at top level, she brings a positive and proactive professional attitude and a steady pursuit to carry out our projects.
Andrei Bucur
Andrei BucurInternational Business Development
Andrei Bucur is our guy that has the vision and the power to enlarge our portfolio, internationally. Having more than 11 years’ experience in Business Development, with a focus on Innovation, his professional background is a valuable asset for our company but also for our future clients. Hi goal is to create and show our benefits, that our clients will love to have. Andrei is passionate about Energy industry, especially for Innovation, Renewables and e-Mobility. Prior to Ringhel, Andrei was leading a Business Development Department in an Energy company, worked in telco for 6 years and more than 11 years in sales, online and advertising.
Lucia Darzan
Lucia DarzanBusiness Devlopment
Andrei Nistoreanu
Andrei NistoreanuBusiness Development
Our millennial colleague, passionate about technology, energy and climate change, is the expert in the area of supply, markets and policies energy. He is a follower of fast and better things and his goal is to bring innovation in the utility software segment.
Razvan Radulescu
Razvan RadulescuChief Technical
With 20 years of experience in telecom, media and energy markets, of which 12 years have been on the German market, Razvan has developed, integrated, coordinated and managed several major projects that reached more than 10 million final beneficiaries. As CTO, in energy field he patented in China, the number 2 in the world of inventions a system of photovoltaic energy dedicated to the retail market and final consumers, project for which the European Union is preparing the legislation. Software authorized trainer, journalism and extreme water sports, such as surfing and sailing, together with the experience of moderator in talk shows, completes the necessary communication skills, besides the technical expertise of the coordinator of Ringhel technical team.
Constantin Iordache
Constantin IordacheTeam Lead
Costel has an extensive experience in the electricity with a proven track record in the field of electrical installations, electricity supply, electricity distribution, focused on results and finding solutions. With proven experience in managing the final customers of electricity and natural gas, he brings a positive and professional attitude being involved in building our projects.
Claudiu Miu
Claudiu MiuTeam Lead
He is Claudiu and he is responsible for leading the support team, to provide quality technical assistance for our clients. He is a positive person in all aspects of life and with his professional background, makes him a very important person for our team. In his free time, he likes to read books, to challenge his dreams, and to be surrounded by people. We are happy to have him.
Marius Carjaliu
Marius CarjaliuTeam Lead
He is Marius. His mandate within the company is to fight against "cockroaches" from the software solutions we deliver. Together with the team it coordinates, it ensures that our business partners benefit from a suite of applications that meet the quality and performance standards required, with the objective of satisfying them. If we want to characterize him in two words, we would say that he is a dynamic and positive person. When he is not fighting bugs, he practices fitness and martial arts.