Csongor Farkas

Hi, I'm Csongor. I turn complex workflows into intuitive digital products.

I'm a Berlin-based Senior Product & UX/UI Designer with 12+ years of experience, primarily in B2B SaaS. I combine product strategy with hands-on design to build scalable design systems and AI-powered features that deliver measurable results — most recently leading product design at Onstruc across iOS, Android and web.

I build products around how people actually work — so they hold up in real hands, not just in the mockup.

Sparkify · Mobile app · Design system

Rebuilding a field-documentation product — and the design system behind it

Sparkify — the app across its core screens

Led end-to-end product design across iOS, Android and web, reshaping inspection workflows around reusable templates, prefilled values and AI-powered data capture. Reduced inspection documentation from several days to around 7 minutes and UI production time by 75–90% for screens built from existing components.

  • From days to ~7 minutes
  • 75–90% less UI production time
  • 600 documentations a day
  • 27 languages

House of Mobile & Games · E-commerce

Redesigning an e-commerce homepage and lifting conversions by 46%

House of Mobile & Games e-commerce homepage preview

Owned the redesign from research and prototyping through to A/B testing. Replaced a shop-first homepage with a filter-first repair journey, helping customers find the right device repair faster.

  • +46% conversion
  • A/B tested

Second Opinion · Mobile app · Design system

Helping patients trust a doctor they’ve never met

Second Opinion telehealth app preview

Contributed to the design of a SaaS telehealth app connecting patients with certified doctors by video, while supervising the design team and shaping clear, accessible digital experiences.

  • Shipped in the US
  • 12+ certified doctors

Kinderleichter Arbeitsschutz · Platform · E-commerce

Turning a safety-services business into a digital offering

Kinderleichter Arbeitsschutz website preview on a device mockup

Designed a platform that brought services, e-commerce, seminar booking and a members’ area into one experience, enabling the business to offer its services online instead of relying solely on in-person sales.

  • Two sites → one platform
  • Shop, booking, courses
All projects