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Dorota Derlatka

@dorotaderlatka

UX/UI Designer who led design systems and enterprise warehouse and sales SaaS at Symfonia, cutting design-to-development handoff time by 40%.

Poland

Message

At Symfonia, I led design for enterprise warehouse and sales SaaS serving 10,000+ business users. I built and maintained a company-wide design system supporting 4+ business units, reducing design-to-development handoff time by 40%.

I also led UX for features from concept to production-ready UI and created a long-term experience strategy informed by data analysis and user feedback. My work combined analytics, user testing, and stakeholder feedback.

At Iyuno SDI Group, I led UX/UI design for global media localization and streaming platforms. I owned the design system and delivered end-to-end experiences for web and desktop products, including a media localization workflow tool.

Earlier, at Isobar, I supported clients including McDonald's with user-centered design and research across retail, fintech, and telecommunications. Across my work, I’ve designed complex B2B products, research-informed interfaces, and scalable design systems, and I’m currently exploring AI design tools and vibe coding.

Experience

Work history, roles, and key accomplishments

Senior UX/UI Designer

Symfonia

Jun 2023 - Jan 2026 (2 years 7 months)

Led design for enterprise warehouse & sales SaaS serving 10,000+ business users.

🎨 Design Systems Leadership
- Built and maintained company-wide design system supporting 4+ business units,
reducing design-to-dev handoff time by 40%
- Maintaining component library in Figma with reusable components and
comprehensive documentation, including multi-branding and theming

📊 Product Impact
- Creat

UX Designer

Iyuno SDI Group

Nov 2017 - Apr 2023 (5 years 5 months)

Led UX/UI design for global media localization and streaming platforms serving entertainment industry leaders worldwide.

🎨 Design Leadership
- Owned company's design system, establishing consistent UI patterns across web and desktop applications used by hundreds of professional employees,
- Delivered end-to-end UX/UI for B2B and B2C platforms, from low-fidelity wireframes to production-ready inte

Junior UX Designer

Isobar

Mar 2016 - Oct 2017 (1 year 7 months)

Delivered UX/UI solutions and research for high-profile agency clients across retail, fintech, and telecommunications sectors.

🏆 Client Success & Strategy
- Supported major brands including McDonald's, Jeronimo Martins, Provident, and Virgin Mobile in achieving business goals through user-centered design
- Facilitated workshops with C-level stakeholders to align business objectives with user need

UX Designer

BPO POLAND Sp. z o.o.

May 2015 - Nov 2015 (6 months)

Helped with redesign of couple of enterprise systems, consulted and participated in start-up growth

🎨 As an UX Designer:
- Gathered business requirements from stakeholders, usability audits, making low- and high-fidelity mock-ups, planning user research and user tests.
- Supported creation of customer experience strategy (customer journeys, made proposition of CX KPIs for one of the products and

UX Designer

Comperia.pl S.A.

Jan 2014 - Apr 2015 (1 year 3 months)

- Telepolis.pl: Designed GSM comparison app for Telepolis.pl, gathered business and SEO requirements, made prototypes, cooperated with graphic designer and developers during implementation. / end to end process
- Comperia Analytics (app built for financial journalists and analysts): gathered business and formal requirements, made user reviews, created information architecture, cooperated with gra

Młodszy Analityk Projektant (staż)

Grupa Pracuj

Jun 2013 - Dec 2013 (6 months)

Talent Management System (SaaS): assisted in gathering business requirements, prototyping and designing first versions of the system, writing technical specification under supervision of Senior System Analyst.

Education

Degrees, certifications, and relevant coursework

Microsoft

Enterprise Product Management Fundamentals

Dec 2025

The Interaction Design Foundation

Membership Certificate

Oct 2018

Warszawska Wyższa Szkoła Informatyki

Studia podyplomowe, Internetowe Aplikacje Bazodanowe

2015 - 2016

Szkoła Policealna GoWork.pl

Technik Informatyk, Technik Informatyk

2012 - 2014

Coursera

Web Application Architectures

May 2014

Uniwersytet Warszawski

Magister Informacji Naukowej, Informacja Naukowa i Studia Bibliologiczne, spec. Informacja Biznesowa

2008 - 2013

Praca licencjacka pt "Działalność i promocja Gabinetu Rycin Biblioteki Uniwersytetu Warszawskiego w latach 2001 - 2010".
W latach 2008-2010 członek Koła Naukowego IINiSB.
Szkolenie przeprowadzone przez profesor z Uniwerystetu w Hannoverze "Company Information" - 11-13.05.2009.