Kristina Kalcheva

Managing Director
Legal Expert


Kristina Kalcheva is a legal specialist and a co-founder of Jelurida.
She has a Master of Law and International Relations Degree from Sofia University and has been working as a legal advisor for seven years.
She has experience with private national, European and International Law. Her professional skills are in the area of Human Rights and Intellectual Property Rights protection on both national and international level.
Part of her job in the company is to explore the different open source licensing models and their enforceability in practice. In the last two years her professional interests are also focused on researching the various possibilities and use cases of applying blockchain technology in real life areas and the arising legal challenges along the way.

Lior Yaffe

Managing Director
Senior Developer


As a 3 years old kid, Lior used to multiply double digits numbers in his head in a split second.
At 13, he got his first computer and developed programs for fast prime calculations, finding Pythagorean triples and calculating polynomial approximations.
Lior has a B.A. in computer science from the Technion in Haifa. He eats and drinks programming and technology and has worked in various companies from startups to large corporations, specializing in software development of enterprise applications. He is a true believer in blockchain technology and its potential to change the world.


Petko Petkov

Core Developer


Petko Petkov is a software developer with experience in financial software, productivity tools and games.
He has BSc in Informatics and MSc in Electronic Governance from Sofia University.
Petko began his career in 2006 as a mobile Java developer. He later switched to server-side Java software, and for two and a half years worked on a system for e-invoicing.
In 2011 he returned to mobile development and until 2017 was writing mostly platform-independent C++ and Java for Android.
Outside his day job he has been dealing with various other technologies including JavaScript, Java SE and Python. Being generally interested in social science, he started exploring the crypto world in 2013, and later became contributor to the Nxt project.
Since October 2017 Petko is a full-time developer at Jelurida.

Tomislav Gountchev

Lead Software Architect


Tomislav Gountchev is a server-side Java developer with more than 15 years of professional experience.
He has a scientific background, having obtained a B.A. in Natural Sciences from Cambridge University, and a Ph.D. in Chemistry from UC Berkeley.
After academia, Tomislav made a career switch and worked as a software engineer for e-commerce companies in the Silicon Valley, NexTag and eBay, with particular interest in Java search engine technology. Later he co-founded Nabble, a website for hosted public forums, where he spent several years as a senior Java engineer, responsible for the design and implementation of multiple backend components. He briefly worked as an R&D software engineer for an open source enterprise CMS company in the Netherlands, before becoming interested in blockchain technology.


Valerii Makieienko

Core Developer


Valerii is a software developer with experience in Financial and Big Data Processing Software. He started as Backend Java Developer in 2006. Since 2010 Valerii focused on distributed software like Private Clouds and large-scale data processing engines.
Valerii has BSc in Mathematics and Master degree in Computer Science from National Technical University of Ukraine 'Kyiv Polytechnic Institute'.

Alberto Fernandez

Technical Sales Engineer


Alberto Fernandez is a technical sales engineer at Jelurida. He is a software engineer currently filling the gap between business and the technology.
He has been actively working as a blockchain consultant, DApp developer, fintech specialist, middleware expert, and is the founder of Sistek, a management consulting firm.
Alberto has over ten years of IT experience as a tech instructor and consultant, and first started to work with blockchain related technologies in 2014.

Verónica Torras

Marketing and Business Development


With over 15 years of experience in Business, Sales and Marketing, Verónica discovered her passion for blockchain in 2017. She has lived and worked in Spain, the Netherlands, and the USA, serving as Chief Marketing Officer at Vita Green Health Products, and as Logistics Assistant at Tommy Hilfiger in the beginning of her career.
Ever since Verónica has been helping and coaching entrepreneurs, while offering training programs for both entrepreneurs and innovation departments of enterprises. She founded B-wom, a B2B2C healthcare mobile app, which reached a user base of over 200,000 in under 18 months. She is credited for taking the Barcelona Lean Startup Community from 10 members to 2,000 members in just two years, and she coached Business Model prototyping at Singularity University in the Silicon Valley. Verónica is advisor at Mobs Inc, a blockchain based marketplace company of video content.

Francisco Sarrias

Senior Sales Engineer


Francisco Sarrias is a senior sales engineer at Jelurida, and partner at different companies like Marina System Iberica (maritime floating structures provider) and Marina Tel and Data (a hosting provider that he founded in 2003). He also founded in 2009 e-Diciones KOLAB, one of the first e-book publishers in Spanish language.
He is an active member of non-profit organizations like the ACET (Catalan Association of Telecom Engineers) and the PIANC Recreational Navigation Commission (World Association for Waterborne Transport Infrastructure). He is member of the board on both of them.
Francisco holds an Msc. in Telecom Engineering from the Polytechnic University of Catalonia (UPC) and a management degree from the IESE Business School. He has been a member of the Nxt community since 2016 and now he contributes with his network and commercial skills to on-board real business cases to the blockchain technology.

Adedayo Adebajo

Lead Support Specialist
Community Manager


Adedayo Adebajo, by qualification, is a Real Estate Appraiser, but by practice a customer service representative and community manager. He has had both on-contact, virtual and on-the-web customer management experience, hence, his passion to be involved in customer satisfaction-related ventures.
He has had the opportunity to work for Poloniex, first as a chat moderator under the alias "Watchtower", then as a support specialist with the same exchange in 2017.
Currently, he is the Lead Support Specialist for Jelurida, and also actively exercising the role of Community Manager.

Iassen Hristov

Sales Representative
Customer Support Specialist


Iassen Hristov is a sales representative and customer support specialist at Jelurida. He has a Master of Science in Chemistry from Sofia University, and a Master of Business Administration from the University of National and World Economy, Sofia.
Iassen has long-term experience initially in Analytical Chemistry and later in domestic and international business as sales and service engineer, and manager of a distributor company.
He has experience in the blockchain world since 2011 and is in the Nxt community since 2013.

Rafael Fernandes

Office Manager
Marketing Assistant


Rafael is by qualification a Multimedia Technician. He is a blockchain and cryptocurrencies enthusiast since late 2016.
In late 2017 he started, an educational channel which aims to introduce blockchain technology to people in his country, Switzerland, where he currently lives and where he is helping Jelurida to establish its new headquarters.