A revamp of an existing feature driven by the ambition to better address user needs. An initiative that required user interviews, ideation and pitches to stakeholders.
A customer-facing fin-tech product designed to reward people and help them save money based on their purchasing behaviour. The project included 9 rounds of UX research.
A reservation/fleet management system for small - medium sized vehicle rental companies. The product development required UX research and two phases of user testing.
Designing a user-friendly Job Portal for a client in the automotive industry. The project included UX/UI design, strategic thinking and implementation of a 3-stage plan over two years.
A 3D application for presentation support that later was redesigned in VR environment. The project included UX/UI design and consultation. Testing was conducted for two groups of users.
What if technology cared about us? Personal assistant designed to manage people's digital lives so that they focus on their real ones.
A little bit about me.
Experience and skills
Hello! I'm David, a Senior Product Designer based in Berlin. I've been designing digital products since 2012, working across FinTech, Mobility, Automotive, and Tourism.
Currently, I work at Circula, where I design experiences for corporate credit cards across web and mobile. My work combines product discovery, interaction design, and design systems, with a focus on making complex experiences simple and intuitive.
Experience
Senior Product Designer
Circula GmbH
Berlin
2024 - Present
Responsible for Circula's Credit Cards product across web, iOS, and Android, working closely with Product and Engineering to improve the experience for cardholders, administrators, and accountants.
Leading end-to-end design initiatives across card management, spending controls, financial workflows, and expense submission, from early exploration and research to implementation.
Working with customers and internal stakeholders to identify problems, validate solutions, and balance user needs with business objectives and technical constraints.
Driving improvements to the Credit Cards product, focusing on usability, consistency, automation, and increasing product adoption.
Lead the development and maintenance of Lunar, Circula's design system, including component architecture, documentation, governance, and consistency across web and mobile platforms.
Explored AI-assisted workflows and developed Figma plugins to automate repetitive tasks, improve design-system maintenance, and reduce manual quality assurance.
Contributing to cross-product initiatives, including the redesign of administrative roles, permissions, and access management.
Collaborating closely with engineers and other designers to ensure high-quality implementation and scalable design solutions.
Senior UX/UI Designer
Mobimeo GmbH
Berlin
Feb. 2022 - Dec. 2023
Worked on digital mobility products, helping users plan and navigate journeys across different transportation services, with a focus on creating seamless and intuitive travel experiences.
Led UX/UI design initiatives from discovery and research through exploration, prototyping, usability testing, and implementation.
Designed complex navigation and mobility experiences, simplifying how users interact with different transportation options.
Collaborated closely with Product Managers, Engineers, and other stakeholders to define requirements, evaluate technical feasibility, and deliver user-centered solutions.
Conducted user research and usability testing to identify pain points, validate design decisions, and continuously improve the product.
Contributed to product strategy and the evolution of the user experience, balancing customer needs, business priorities, and technical constraints.
Senior UX Designer
Optiopay GmbH
Berlin
Dec. 2020 - Jan. 2022
Designed a Fintech B2C product that aimed to reward people for their everyday spending behaviour.
Laid the groundwork for a new brand identity, UX guidelines and the design system.
Explored monetisation opportunities with a team of product managers and designers.
Designed user flows and wireframes.
Created high-fidelity prototypes for presentations and testing.
Conducted user research (usability tests and interviews) to validate product assumptions and test user journeys.
Translated insights into design iterations to further improve the product (incremental approach).
Handed pixel-perfect designs over to engineering and supported them during implementation and final design approval.
Reported the team’s progress to internal and external stakeholders.
UX/UI Designer
Mapmovingstory GmbH
Berlin
Feb. 2017 - Sep. 2020
Collected requirements from clients.
Validated assumptions via user research.
Created brand identities, designed wireframes, screens (UI) and infographics that explained complex industrial processes.
Wrote user stories for engineers to implement the designs.
Created an implementation roadmap for stakeholder communication.
Acted as the main contact point for engineering questions and made sure design was implemented correctly.
UX/UI Designer
Freelance work
Berlin
Jan. 2018 - Dec. 2020
Collaborated with several small and mid-sized clients, e.g:
Designed user journeys for an AI personal assistant.
Created a brand identity and designed screens for an automated (chat-bot) Travel Assistant.
Designed screens for a Germany wide LGBT car platform.
Interface Designer
X!TE agency
Kos, Greece
Mar. 2012 - Sep. 2016
Created brand identities, concepts, and websites for several clients in the Greek Tourism Industry such as hotels, transfer services, car rentals and online stores.
Designed user flows and UI for a SaaS solution targeted at small and mid-sized businesses.
Skills & Proficiency
Tools
Figma
Sketch, Zeplin
Adobe Suite
ZeroHeight
Phrase
Userlytics, GetFeedback
Amplitude
Jira, Confluence, Asana, Trello
MS Office, Google Drive
Core skills
Exploration and ideation
User research
Prototyping
Strong collaboration with engineers
Languages
English (Fluent)
German (Intermediate)
Italian (Beginner)
Greek (Native)