What Happy Clients Say
Collaboration with some of them has been going on for decades.

Collaborating with Marina for almost two years on DanceLib’s branding and UX/UI design has been an exceptional experience. From the very start, she demonstrated a deep commitment to understanding our vision, target audience, and competitive landscape, creating a brand identity that perfectly represents DanceLib’s values.
Marina took on every aspect of the design, handling both creative and technical elements with a high level of expertise. Her thoughtful approach ensured that each decision was backed by research, giving our platform a user experience that is both engaging and intuitively functional. The structure and navigation she developed made the platform accessible and enjoyable for a broad user base.
Working with Marina has also been a pleasure due to her excellent communication skills. She listens carefully, provides valuable insights, and adapts her approach based on feedback, making collaboration smooth and productive. Beyond her creative skills, her reliability and proactive mindset have made her an invaluable partner throughout this journey.
I would highly recommend Marina for any design project!

Jang Widler
CEO, DanceLib
As a company focused on creating digital products, we’ve been collaborating with Marina for years and rely on her for all our design needs, from applications and websites to branding and promotional assets. Marina is extremely professional, she puts a lot of effort into understanding user needs, and quickly establishes a relationship of trust with the client. She regularly comes up with excellent ideas, has a strong grasp of the web as a medium, and understands the technical side of the job. Marina has worked with us on numerous projects for both domestic and international clients.

Zdenko Ćorić
Co-founder, Utilis
Unlike many designers, Marina takes a thorough and systematic approach to her work. She leaves nothing to chance, carefully researches every detail, and always presents clients with multiple well-developed and expertly explained solutions. Marina is someone you can truly rely on – she’s highly motivated, detail-oriented, and focused on delivering exceptional results every time.

Diana K. Dešković
CEO, MAMFORCE
Our collaboration with Marina has spanned nearly 20 years, during which she has contributed to high-profile projects, including large-scale betting web applications for the Croatian Lottery and numerous other apps and websites. Marina is a talented designer with a deep understanding of the web as a medium, exceptional communication skills, and a proven ability to deliver quality, complex web systems. Working with her is effortless – she consistently delivers on time, and her professionalism ensures seamless collaboration.

Miroslav Benak
Business Solution Consultant, Perpetuum Mobile
The thoughtful approach and commitment to excellence are why we’ve collaborated with 03GO for years. Our website, with its complex structure and unique requirements, was handled with professionalism in both design and development. They are truly collaborators you can trust with your web project.

Tomislav Hercigonja
CEO, Topomatika d.o.o.
Working with 03GO fully met our expectations. They developed an original concept, content, and design for the cetina.hr website on the WordPress platform with expertise. I highly recommend them—not only for their professional approach and quality results within deadlines but also for being a pleasure to collaborate with.
Hrvoje Godinić
Director, Cetina – Naturalis d.o.o.
“Collaborating with Marina for almost two years on DanceLib’s branding and UX/UI design has been an exceptional experience. From the very start, she demonstrated a deep commitment to understanding our vision, target audience, and competitive landscape, creating a brand identity that perfectly represents DanceLib’s values.
Marina took on every aspect of the design, handling both creative and technical elements with a high level of expertise. Her thoughtful approach ensured that each decision was backed by research, giving our platform a user experience that is both engaging and intuitively functional. The structure and navigation she developed made the platform accessible and enjoyable for a broad user base.
Working with Marina has also been a pleasure due to her excellent communication skills. She listens carefully, provides valuable insights, and adapts her approach based on feedback, making collaboration smooth and productive. Beyond her creative skills, her reliability and proactive mindset have made her an invaluable partner throughout this journey.
I would highly recommend Marina for any design project!“

Jang Widler
CEO, DanceLib
Unlike many designers, Marina takes a thorough and systematic approach to her work. She leaves nothing to chance, carefully researches every detail, and always presents clients with multiple well-developed and expertly explained solutions. Marina is someone you can truly rely on – she’s highly motivated, detail-oriented, and focused on delivering exceptional results every time.

Diana K. Dešković
CEO, MAMFORCE
“As a company focused on creating digital products, we’ve been collaborating with Marina for years and rely on her for all our design needs, from applications and websites to branding and promotional assets. Marina is extremely professional, she puts a lot of effort into understanding user needs, and quickly establishes a relationship of trust with the client. She regularly comes up with excellent ideas, has a strong grasp of the web as a medium, and understands the technical side of the job. Marina has worked with us on numerous projects for both domestic and international clients.“

Zdenko Ćorić
Co-founder, Utilis
“Our collaboration with Marina Pečenko has spanned nearly 20 years, during which Marina has worked on high-profile projects, including large-scale web applications for the Croatian Lottery. Marina is a talented designer with a strong understanding of the web as a medium, exceptional communication skills, and a proven track record of delivering high-quality, complex web systems. Working with her is effortless—she consistently delivers on time, and her professionalism ensures seamless collaboration.”

Miroslav Benak
Project Manager, Perpetuum mobile
“The thoughtful approach and commitment to excellence are why we’ve collaborated with 03GO for years. Our new website, with its complex structure and unique requirements, was handled with professionalism in both design and development. They are truly collaborators you can trust with your web project.”

Tomislav Hercigonja
Director, Topomatika d.o.o.
“Working with 03GO fully met our expectations. They developed an original concept, content, and design for the cetina.hr website on the WordPress platform with expertise. I highly recommend them—not only for their professional approach and quality results within deadlines but also for being a pleasure to collaborate with.”
Hrvoje Godinić
Director, Cetina – Naturalis d.o.o.