Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm a passionate and experienced UI/UX designer with a strong background in creating user-centered designs. Over the past 20 years, I've dedicated myself to enhancing the user experience across various digital platforms, believing that design should be both functional and aesthetically pleasing. I love collaborating with teams to innovate and deliver engaging solutions that resonate with users.…

Kostadin Temelkov

Web Designer, UI Designer, Front-End Developer, +3





I'm a passionate and experienced UI/UX designer with a strong background in creating user-centered designs. Over the past 20 years, I've dedicated myself to enhancing the user experience across various digital platforms, believing that design should be both functional and aesthetically pleasing. I love collaborating with teams to innovate and deliver engaging solutions that resonate with users.…

Available to hire

I’m a passionate and experienced UI/UX designer with a strong background in creating user-centered designs. Over the past 20 years, I’ve dedicated myself to enhancing the user experience across various digital platforms, believing that design should be both functional and aesthetically pleasing. I love collaborating with teams to innovate and deliver engaging solutions that resonate with users.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Serbian

Fluent

Bosnian

Fluent

Croatian

Fluent

English

Advanced

Work Experience

Senior UI/UX/GUI/WEB Designer & HTML coder at Dun & Bradstreet

January 1, 2010 - Present

Owned full UX to UI processes for global B2B platforms, built an enterprise design system, and mentored junior designers.

Senior UI/UX Designer & Front-End Developer at Dun & Bradstreet

January 1, 2010 - Present

Owned full UX to UI to test to deploy cycles for global B2B platforms. Built enterprise design system (Illustrator + Figma) adopted by 10 teams. Delivered WCAG-compliant, responsive interfaces in HTML5/CSS3/BEM. Mentored two junior designers, enabling 30% faster handoffs. Drove A/B tests and analytics, resulting in +25% user engagement. Led UI/UX for flagship web apps, visual identities, and digital services.

Senior UI/UX Designer & Front-End Developer at Dun & Bradstreet / Bisnode Slovenia

January 1, 2010 - Present

Lead UI/UX design for high-profile web applications and digital services; project management and complete UI/UX process; creation of visual identities and web solutions; design of digital and printed materials; developed and maintained scalable design systems and component libraries; executed advanced HTML/CSS implementations ensuring responsive and accessible interfaces; presented work and mentored junior designers; collaborated with development teams, product, marketing and customer care in Agile environments; performed developer handoffs.

Web designer, UI/UX Designer, Front end developer at Dun&Bradstreet - Bisnode Slovenija

January 1, 2010 - November 24, 2025

Web design, UI/UX design, front-end development; responsible for maintaining and optimizing the company's web presence, designing interfaces, and collaborating with cross-functional teams.

Web designer, UI/UX Designer, Front end developer, CMS administrator at ProPlus – CME GROUP

January 1, 2010 - January 1, 2010

Web design, UX design, front-end development, CMS administration, collaboration with teams.

Web designer, UI/UX Designer, Front end developer at Dun & Bradstreet - Bisnode Slovenija

January 1, 2010 - November 24, 2025

UI/Visual Design, UX Design & Research, Web and GUI Design, Testing & Validation, Advanced HTML / CSS Development, Maintaining a website, CMS administration, Performance Optimization and SEO Optimization, Collaboration With Teams.

Lead UX Researcher & UI Designer at ProPlus – CME Group

January 1, 2007 - December 31, 2010

Led UX research and UI design for news portals serving 10M+ monthly users. Conducted usability labs, heatmaps, and A/B tests, contributing to +25% average retention. Optimized interaction flows and front-end performance.

Web & UI/UX Designer, Front-End Developer at ProPlus – CME Group

January 1, 2007 - January 1, 2010

Designed and implemented user-centered web applications and microsites; managed CMS, optimized performance, and conducted usability testing; led full UI/UX process and visual identity creation; delivered complex front-end implementations and ensured accessibility.

Project leader, Web designer, UI/UX Designer at Asobi d.o.o

January 1, 2006 - January 1, 2006

Project leadership, web design, UI/UX design, team collaboration.

Project Leader & UI/UX Designer at Asobi d.o.o.

January 1, 2002 - December 31, 2006

Managed research → UX → UI → front-end lifecycle for 6+ digital products. Delivered web identities & UX/UI for Asobi d.o.o. → +30% engagement. Key projects: mini.si (UX research + full UI), bmw.si (interface design, build & launch), elansports.com (UX/UI + responsive front-end).

Project Leader & UI/UX Designer at Asobi d.o.o

January 1, 2002 - January 1, 2006

Led projects from concept to delivery, including wireframing, prototyping, and front-end development; managed complete UI/UX process; created visual identities and web solutions; designed digital and printed materials; coordinated cross-functional teams.

Web designer, UI/UX Designer at Gigodesign d.o.o

January 1, 2002 - January 1, 2002

Web design, UI/UX design.

Web designer, UI/UX Designer at Gigodesign d.o.o

January 1, 2001 - January 1, 2002

Web design and graphic production; creation of visual concepts and prototypes.