Resume
12+ years shaping digital products through UX, UI and systems thinking.
Senior Product & UX/UI Designer with 12+ years turning complex products and workflows into clear, scalable experiences. I work end-to-end — product strategy and research through interaction design and shipped UI — and build the design systems that keep products consistent across web, iOS and Android.
Snapshot
Currently: Senior Product & UX/UI Designer at Onstruc UG, Berlin
Location: Berlin, Germany
Focus: Product design, UX & UI, design systems
Platforms: Web, iOS & Android
Contact: hello@csongorfarkas.com
Experience
Senior Product & UX/UI Designer09/2024 – Present
Onstruc UG · Berlin, DE
Owned the product, UX and UI direction across iOS, Android and web — from documentation, inspection and project-management workflows to offline and AI-assisted features — plus the multi-brand design system developers ship from.
Senior UX/UI Designer02/2020 – 08/2024
SEO-Revolution GmbH · Berlin, DE
Websites, e-commerce systems and apps for clients across sectors, plus the company's own in-house tools — most built from scratch.
Senior UX/UI Designer10/2019 – 02/2020
Interstruct GmbH · Berlin, DE
Client portal templates within an existing design language, validated through A/B testing.
Product Designer02/2019 – 09/2019
Lingoda GmbH · Berlin, DE
Full website redesign and a unified design language for the language-learning platform.
Product / UX & UI Designer01/2016 – 10/2018
Nentec Computers LLC · Newburyport, MA, USA
Led design on the Second Opinion telehealth product and led the team that delivered it — engineering and product.
Product Designer10/2014 – 01/2016
Social Skills Animation · Athens, GR & Novi Sad, RS
Led design and, acting also as Head of Animation, built the animation team on an award-winning therapy app — including its characters, animation library and company brand.
Selected Work
Sparkify — rebuilt a field-documentation product for German electricians around the tasks they already do — documentation, inspection, testing and project management, with offline and AI-assisted features — on a token-based, multi-brand design system shipping across iOS, Android and web. Users, documentations and paying customers have all grown steadily since.
House of Mobile & Games — e-commerce homepage redesign validated with A/B testing: a 46% increase in conversion rate.
Social Skills Animation — led design for an award-winning therapeutic animation app, including character and animation-library creation.
Kinderleichter Arbeitsschutz — gave an in-person safety consultancy its first digital product: one platform covering services, a shop, seminar booking and a members' area.
Second Opinion — a telehealth product helping patients find, evaluate and choose a certified doctor, designed around the confidence needed to trust a doctor they have never met.
Capabilities
Design: product design, UX research, user flows, information architecture, wireframing, prototyping, interaction design, usability & A/B testing.
Systems: design systems, component libraries, design tokens, multi-brand theming, developer handoff, web, iOS & Android.
Product & collaboration: product strategy, feature prioritisation, and translating business goals into user-centred, technically feasible solutions — working closely with engineering, product and leadership.
AI-assisted design: Claude, Claude Design and ChatGPT used daily for research, documentation and design exploration.
Tools
Figma & FigJam
Token Studio
Storybook
Adobe Creative Suite
Claude & Claude Design
ChatGPT
Miro
Maze & Useberry
HTML & CSS
WordPress
Education & languages
Certified UX Designer — CareerFoundry UX Design programme, Berlin · 2020
UX Fundamentals → UX Immersion → programme certificate. AZAV / TÜV SÜD certified, ZFU-registered.
Languages: English (C1) · German (B1) · Hungarian (native) · Serbian (C1)