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I'm Dmitri Tonitsoi, a product and UX designer with 8+ years leading end-to-end UI/UX initiatives across tech, logistics, wellness, and food tech. I excel at designing scalable, user-centered solutions for B2B and consumer platforms, driving growth by refining onboarding flows, navigation, and prototypes. I'm trusted by global brands including Siemens, Microsoft, and Google, and I've collaborated with P&G, Stanford University, Nestlé, and Positive Intelligence. I love turning complex problems into clear, delightful experiences and building reusable design systems that reduce costs and accelerate value.…I'm Dmitri Tonitsoi, a product and UX designer with 8+ years leading end-to-end UI/UX initiatives across tech, logistics, wellness, and food tech. I excel at designing scalable, user-centered solutions for B2B and consumer platforms, driving growth by refining onboarding flows, navigation, and prototypes. I'm trusted by global brands including Siemens, Microsoft, and Google, and I've collaborated with P&G, Stanford University, Nestlé, and Positive Intelligence. I love turning complex problems into clear, delightful experiences and building reusable design systems that reduce costs and accelerate value.

Dmitri Tonitsoi

App Designer, Product Designer, Web Designer, +3

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I'm Dmitri Tonitsoi, a product and UX designer with 8+ years leading end-to-end UI/UX initiatives across tech, logistics, wellness, and food tech. I excel at designing scalable, user-centered solutions for B2B and consumer platforms, driving growth by refining onboarding flows, navigation, and prototypes. I'm trusted by global brands including Siemens, Microsoft, and Google, and I've collaborated with P&G, Stanford University, Nestlé, and Positive Intelligence. I love turning complex problems into clear, delightful experiences and building reusable design systems that reduce costs and accelerate value.…I'm Dmitri Tonitsoi, a product and UX designer with 8+ years leading end-to-end UI/UX initiatives across tech, logistics, wellness, and food tech. I excel at designing scalable, user-centered solutions for B2B and consumer platforms, driving growth by refining onboarding flows, navigation, and prototypes. I'm trusted by global brands including Siemens, Microsoft, and Google, and I've collaborated with P&G, Stanford University, Nestlé, and Positive Intelligence. I love turning complex problems into clear, delightful experiences and building reusable design systems that reduce costs and accelerate value.

Available to hire

I’m Dmitri Tonitsoi, a product and UX designer with 8+ years leading end-to-end UI/UX initiatives across tech, logistics, wellness, and food tech. I excel at designing scalable, user-centered solutions for B2B and consumer platforms, driving growth by refining onboarding flows, navigation, and prototypes.

I’m trusted by global brands including Siemens, Microsoft, and Google, and I’ve collaborated with P&G, Stanford University, Nestlé, and Positive Intelligence. I love turning complex problems into clear, delightful experiences and building reusable design systems that reduce costs and accelerate value.

Skills

Product Design

Prototype

Logo

Experience Level

Product Design

Expert

Prototype

Expert

Logo

Expert

Work Experience

Senior Designer at Positive Intelligence

January 1, 2025 - January 1, 2025

Led B2B and consumer UX initiatives, automating customer journeys and creating high-quality prototypes to present to the board. Drove product vision and roadmap, and designed scalable onboarding flows and navigation across web and mobile platforms. Achievements include increasing monthly active users by 300%, maintaining an NPS of 60+, and contributing to $300K–$500K+ in revenue while reducing operational costs by 70% through workflow optimization and removing redundant processes.

Product Designer at Portal

January 1, 2024 - November 25, 2025

Designed the MVP for a cutting-edge smart oven and food delivery product in London. Delivered the MVP launch in under 90 days, established an easy-to-code high-fidelity onboarding and hardware pairing prototype within 3 weeks from ground up, and aligned brand foundations with scalable UX frameworks.

Senior Designer at Borzo Delivery

December 31, 2021 - December 31, 2021

Created B2B user experiences for courier management, tracking, and multi-national logistics operations, contributing to a more cohesive enterprise logistics system and improved operational efficiency.

Product Designer at Dostavsky.ru

January 1, 2020 - January 1, 2020

Built desktop and mobile products for delivery routing, website content management, and call-center operations. Redesigned the main B2C product, launched a separate grocery delivery service, improved last-mile routing efficiency (~12–18%), uplifted on-time delivery (~8–12%), increased checkout conversions (~15–25%), introduced a lightweight design system with reusable components, and achieved WCAG AA compliance.

Lead Designer at Positive Intelligence

January 1, 2021 - January 1, 2025

Led end-to-end product design for B2B and consumer experiences across web and mobile. Created high-quality prototypes and roadmaps, presenting to the board. Increased monthly active users by 300% by redesigning onboarding flows and simplifying navigation while maintaining an NPS of 60+. Contributed to $300K–$500K+ in revenue by enabling new B2B workflows adopted by Siemens and others. Reduced operational costs by 70% by optimizing tooling and removing redundant processes.

Product Designer at Dostavsky.ru

January 1, 2018 - January 1, 2020

Built desktop and mobile products for delivery routing, website content management, and call-center operators. Redesigned main B2C product and launched a separate grocery delivery service. Improved last-mile routing efficiency, reducing average route distance by 12–18% and lifting on-time delivery by 8–12% via a dispatch UI. Increased checkout conversion by 15–25% through checkout redesign. Reduced support inquiries by creating a transparent and scalable delivery status system. Introduced lightweight design system and reusable components, speeding feature delivery 20–30% and achieving WCAG AA compliance.