
Tomáš Rychecký
CEO of STEM/MARKTomáš has experience in managing financial institutions and providing consultancy to both commercial and non-profit sectors. He enjoys thinking and staying active. He regularly challenges himself with uphill runs, while cycling is for him more about unwinding, saving time, reducing stress, and doing his bit for the environment. Tomáš took over STEM/MARK from Jan in September 2024 and is excited to develop it further, focusing on new technologies and data trends.

Jana Špolcová
Deputy CEOJana has gained experience in both field operations and production at STEM/MARK, and prior to her current role, she spent several years in client service. After working in pharma research, finance, and digital, she became a specialist in radio research, which she still focuses on. In both work and leisure, she is most often accompanied by black coffee and an even darker sense of humour.

Petr Gajdušek
Client service – Finance, TelcoA financial research expert who’s also open to diving into the worlds of telecommunications, lotteries, gaming, and betting. He’s a fan of cold weapons, sci-fi, and Nordic crime dramas.

Jan Burianec
Client Service – Public Administration, Media (TV, Press), Academic sectorJan is interested in public opinion research. He specialises primarily in social science, institutional, and political topics. He is also responsible for media and municipalities. He studied sociology and media studies. In his spare time, he enjoys cycling, hiking, and winter sports.

Jitka Zítková
Client Service Assistant – Netbus, Omnibus, Public ProcurementThe good fairy of the CSM department, who gets everything set up and looked after, but also enjoys conducting research on a variety of topics. Jitka is also a keen cyclist and basketball player.

Ondřej Vácha
Client Service – Transport and EnergyHe has been working at STEM/MARK for over 15 years, taking care of clients and their research, especially in the areas of transport and energy. In his spare time, he enjoys all sorts of activities, listens to music, reads comics, plays football, tends to his orchard and bees, goes on trips with his family, and enjoys hiking with friends.

Ivana Valentová
Client service – FMCG, Consumables, Education, RetailIvana has been working in market research for more than 30 years – with a three-year break – and has spent half of that time at STEM/MARK. She specialises mainly in FMCG, consumables, and international research. In her spare time, she enjoys travelling, photography, and appreciates fine wine.

Roman Kašša
Client Service – Field Data CollectionHe has been working at STEM/MARK for over 20 years. He has worked across all departments and knows the company inside out. In his free time, he enjoys being with his family, staying active, travelling in a caravan, and discovering new places and people. He likes to relax by watching series like Dark, 1899, Bron, and 'Allo 'Allo."

Gabriela Šamanová
Client Service – Public Administration and PR, Data Collection, TourismGabriela joined STEM/MARK after working in academic sector and the field of Public Relations. She specialises in PR and public administration. In her spare time, she enjoys reading about degrowth theories.

Milan Hurtík
Head of ITHe leads the team of developers behind our applications, which are used for both conducting surveys and supporting internal processes. Outside of work, he's into bitter IPA and fast rock'n'roll.

Iva Ryznerová
Head of ProductionIn production, she leads a team of analysts who extract answers to clients' questions from the data collected. Iva ensures that everything runs smoothly. Besides data, she enjoys forests, the sea, mountains, peace, movement, tai chi, and (occasionally) prosecco.

Jan Tuček
Consultant for Online ResearchJan led STEM/MARK for over 20 years. During his time at the company, he became its spiritual father, and has always been passionate about research projects. After many years, he decided to step back a bit and exchanged his role as director for a position in client services. He continues to serve as a guru for media and political research. in his free time, he enjoys cycling, cross-country skiing or checking on his sheep in the garden.

Marek Jirásek
Head of Field OperationsMarek has spent his entire career leading and working in Operations. He has experience in a market research company, an innovation company, and startups. The latter was a great learning experience that taught him about complexity. As an experienced practitioner, very little surprises him now. He compensates for the demanding nature of his work with ultramarathons – including 100km races, 24-hour runs, and the Spartathlon.

Jana Konečná
Accountant
Lucie Vávrová
Reception
Iva Ryznerová
Head of Production
Martin Žemlička
Analysis, Data Processing
Radek Pileček
Analysis, Data Processing
Dalibor Stehno
Analysis, Data Processing
Jaroslav Ovesný
Analysis, Graphics, Data Processing
Martin Anděl
Advanced Data Analysis
Jitka Haiderová Soukupová
Analysis, Data Processing
Viktor Jurdič
Analysis, Data Processing
Zuzana Rabochová
Analysis, Data Processing
Matěj Šimlovič
Advanced Data Analysis
Zuzana Švalbová
Analysis, Data Processing
Lukáš Stropnický
CAWI researcher and cross-sectional IT support
Kamila Syrůčková
Regional coordinator for Prague and the Central Bohemian Region
Richard Mišaga
CAPI Technical Support
Martina Klašková
Regional Coordinator for the South Moravian Region
Naďa Hlaváčková
Interviewer Network Management
Lenka Goldsteinová
Project Coordination
Karolína Římková
Project Coordination
Zuzana Hrbková
Project Coordination, Data Digitalisation
Marek Jirásek
Head of Field Operations
Tereza Petržilková
Project Coordination, Sampling, Scripting
David Rozhon
Project Coordination, Sampling, Scripting
Hana Buršíková
Online Research, Social Media
Simona Havlová
Project Coordination
Jana Míková
Project Coordination
Milan Hurtík
Head of IT
Vašek Hájek
Survey Application Development
Jiří Gregor
Internal Systems Development
Antonín Ryzner
Web Application development
Tomáš Tenkrát
Web Application development
Jitka Zítková
Client Service Assistant – Netbus, Omnibus, Public Procurement
Roman Kašša
Client Service – Field Data Collection
Ivana Valentová
Client service – FMCG, Consumables, Education, Retail
Gabriela Šamanová
Client Service – Public Administration and PR, Data Collection, Tourism
Ondřej Vácha
Client Service – Transport and Energy
Jan Burianec
Client Service – Public Administration, Media (TV, Press), Academic sector