Welcome to my personal site
I'm a Designer
A little about me
I’ve spent over two decades designing digital experiences that connect people with technology — from highly interactive e-learning applications to complex SaaS platforms. I thrive in fast-moving, global environments where ideas flow freely and teams push boundaries.
With years of experience under my belt, I know how to find the right tools, ask the right questions, and make things happen — no waiting around for detailed briefs or hand-holding. I have taken products from ground up to delivery. I love taking ownership and turning challenges into clarity.
People often describe me as easy (and fun) to work with — a team player who brings energy, empathy, and mentorship to any group, no matter the mix of backgrounds or experience levels.
At the heart of everything I do is the user. My goal is to shape digital products that not only meet business goals but truly serve the people who use them.
You can read what others say about my work and collaboration style in the testimonials section.
Recent work experience
Senior UX designer
Jan 2022 - Dec 2024
Webfleet/Bridgestone mobility Solutions, Barcelona, Spain
- Designed multiple features across mobile and desktop telematics products, delivering customer centric solutions over complex user flows, relied on live data from tachograph, installed devices and sensors
- As part of the design process, created mock-ups and prototypes with XD and Figma, collaborated with product managers and product owners remotely from international teams
- Planned and executed international customer interviews together with PMs and customer support
- Initiated and supported the transition to Mixpanel analytics for PM friendly KPI reporting
- Launched design system initiative for Webfleet, collaborated with contractors of PoC project and took management and update of the design system
- As part of the core team for Bridgestone corporate design system Kumiko, worked with the US agency to align the needs and existing design system of Webfleet platform
- Planned and facilitated design workshops including, user journey mapping, affinity mapping, lightning decision jams and assisted in design sprint
- Supported vigorous research practices, introduced and helped set up usertesting.com platform for continuous usability testing
Education
Master of Arts - Interactive Media
2005 - 2007
University of the Arts London, UK
- Full time one year study in interactive media and story telling, human-computer interaction and technologies
- Wrote dissertation on the application of social structuration theory on user agency in massively multi-player games.
Certificates
I have a thirst for learning. I stay up to date with industry knowledge through books, webinars, conferences and training. The following recent certifications highlight my commitment to continuous learning.
Service Design: How to Design Integrated Service Experiences
Distinction: Top 10% in class
Go to detailsCompetencies
I am competent with distinct user and service experience design and design thinking methodologies to a level that I can plan, execute and be a mentor for teams
User research
Planning and execution of interviews, surveys, observational studies to help identifying user pain points and product opportunities
Usability Testing
Planning and execution of moderated and unmoderated usability testing of low and high fidelity prototypes or released products testing task completion times, ease of use and user flows
Product analytics
Mixpanel and Google analytics code integration, reporting, event tracking planning and setting up KPIs
User journey mapping
Helping product teams mapping the user touch-points within a service or product to identify friction and product opportunities
Rapid prototyping
Creation of interactive low and high fidelity prototypes using with tools like Axure, XD, Sketch and Figma for usability testing and development
Design systems
Systematic development of atomic components, token structure, optimisation and management
Skills
Throughout my career I acquired numerous skills, knowledge of tools and was exposed to product technologies through practice and collaboration.
Portfolio
These are the latest and the most comprehensive case studies of my own work as product and end to end user experience designer. I will be adding more case studies while I update my new website. Please get in touch to learn more about the other real life projects I have been involved as an UX and product designer.
Testimonials
I have been fortunate to have worked with brilliant designers and managers thoruoughout my career. Here are some of the testimonials offering insights into my work and skills.
Gultekin was known in our design team as someone who asked the right questions and was not afraid to challenge the status quo. He took initiative, looked for ways to improve old processes, and introduced new ideas that made our work better. He drove our design system implementation and spread knowledge about the use of UX research as well as different UX methodologies across the company. Read in full
Katarzyna Laska
Product & UX designer - Bridgestone
I highly recommend Gültekin, with whom I worked at Bridgestone Mobility Solutions for nearly three years. From day one, he built a strong standing within the team due to his excellent chemistry with everyone. Gültekin's extensive experience and outstanding UX skills in research, concept development, validation, testing, iteration, and visual design have always impressed me.[ ... ] Read in full
Steffen Orlowsky
UX design manager - Bridgestone
He excels in always putting the customer at the centre and deeply questioning their true needs. This customer-centred approach results in solutions that are not only functional, but also intuitive and user-friendly. His love for the profession is reflected in every project he works on and in his work on our Figma Design System. Read in full
Kristina Diener
Snr. UX Designer - Bridgestone
Among his many achievements, Gultekin also applied user-centric design and performed considerable user testing to complete a major re-design of our main customer portal [..] and has significantly contributed to Arkessa’s competitiveness and customer retention. Read in full
Andy Carr
Head of Product-Arkessa
Gultekin literally single-handedly transformed our approach to web application design from a largely developer-lead GUI creation to a fully user-centric, properly user-tested UX-lead model. To this day, we receive praises from customers about how usable, modern and sleek Emport is. Read in full
Martin Hostacny
CTO - Rowan Energy/ ex Arkessa
Contact
If you are interested in working together or hiring me, please send me an email or give a call using details in my CV.
Alternatively you can message me through LinkedIn
