We at InterQuality stand out for our clients by using deep expertise to solve problems that matter, making them easy to understand and by being easy to work with.

Our Team

Making complex easy for our clients and our people is what we do. Solving problems that matter confidently and pragmatically and using our deep expertise and global perspective to connect our people and clients. We are united in the belief that we are stronger together. Underlying everything we do is a winning mindset focused on absolute delivery for our people, clients and communities.

Rayna Ilieva - Managing Director

Rayna Ilieva - Managing DirectorRayna has more than 15 years of experience in project and quality management. She holds MSc (Master of Science) degree in Strategic Quality Management from the University of Portsmouth, UK and the world recognised process improvement qualification Lean Six Sigma Master Black Belt. She has experience as a senior quality consultant and continuous improvement lead in global companies managing change and transformation programs across organisations for improving levels of quality. Experience covers more than 400 improvement initiatives and projects in a complex transformation environment.

Experienced Lean Six Sigma trainer supporting companies to manage organisational transformation, and individuals – to build the skills and knowledge to expand their professional expertise. Trained, coached and certified 2000+ professionals.Linked in

Hristina Stoyanova - Senior Consultant

Hristina Stoyanova - Senior ConsultantHristina Stoyanova is a Lean Six Sigma (LSS) Black Belt with more than 10 years of experience in applying the LSS tools and methodology in business projects. She is also an LSS trainer and mentor sharing her knowledge and providing guidelines to LSS Belt candidates and project leads on a variety of process improvement initiatives.

Hristina has a PhD degree in Management and is teaching Management of outsourcing projects and companies to Master students at Sofia University St. Kliment Ohridski. Read more: hristinastoyanova.comLinked in

Tim Claus - Senior Consultant

Tim Claus - Senior ConsultantTim Claus is a certified Scrum Agile Trainer possessing Scrum Master, Agile master and Product owner certifications. He brings in 15+years of extensive project expertise working with Agile Scrum methodology.

Tim has experience in different positions: expert engineer, technical project lead as well as people manager. Being a certified trainer, he has extensive training and mentoring skills and shares knowledge with delight.Linked in

Darina Kalo - Senior Consultant

Darina Kalo - Senior ConsultantDarina Kalo is a professional Project Manager and Scrum Master with more than 15 years of experience in the telco and fintech sectors.

She has played a role in the transformation of some of the biggest companies in these sectors in Bulgaria and has a proven track record of multiple successfully delivered projects behind her back.

She possesses knowledge in all popular project management methodologies and can help you draw useful parallels and tailor your approach to best fit the needs of your business or professional development.

Darina’s experience is a precious insider’s view on a number of day-to-day challenges businesses face when delivering complex projects across different locations and impacting various aspects of the business.