Serhii K.

🏆 Top 1% of Upwork freelancers · 🚀 200+ successful projects · 💰 $30M+ raised by my clients last year · 🌐 60 websites & 30+ apps designed last year Founder: "The design is beautiful." Also founder: "Why is nobody signing up?" 🫠 That gap is my job. I'm a UI UX Designer for SaaS and AI founders, and I turn "it looks nice" into "it converts." ⭐️ 100% success rate (5.0 rating across 95 projects) ⭐️ 1,000,000+ monthly users on products I've designed ⭐️ 53% average conversion-rate growth vs. the initial design I design product and web interfaces measured in revenue, not likes: as a SaaS UI UX Designer, Figma Designer, and Product Designer for apps and dashboards, and as a Web Designer and Website Designer for marketing sites. WHAT CLIENTS GET As a UI UX Designer for SaaS, Fintech, Healthtech, and AI products, results from real projects: - Delphyr — Healthcare product redesign, AI module UX UI design in Figma, marketing website. As their Web Designer: → €2.05M raised, +56% user satisfaction - Wemine — Fintech UX UI design for web app, corporate website, pitch deck. SaaS UI UX Designer work: → $1M deal closed within two weeks - Plan B — Fintech UX UI design in Figma for web portal and dashboards, brand identity. As a SaaS Product Designer: → $150,000 grant from Ava Labs - FundFix — Web3 marketing website design and build: → +49% conversion, $473,000 raised in pre-sale - Boom — UX UI design in Figma for a wellness app, brand identity, Framer build. Mobile App Designer: → −28% churn, Y Combinator finalist - Minisport — rebrand for corporate website, UX UI design and full rebranding. Graphic Designer and Product Designer: → +33% revenue WHAT I DESIGN As a SaaS UI UX Designer in Figma and Product Designer: Dashboards · admin panels · data tables · reporting and analytics UX · multi-tenant SaaS · billing, roles and permissions · onboarding flows · CRM, ERP As a UI UX Web Designer and Figma Website Designer: Web application UI · marketing and product websites · information architecture · responsive layouts · design-to-dev with React, Vue, Webflow, Framer or WordPress As a UI UX Designer AI specialist in Figma: LLM interfaces · AI chat and agent UI · confidence and error states · human-in-the-loop review flows As a UI UX Designer Figma expert: Component libraries · design tokens · Auto Layout · user research · user flows · wireframing · interactive prototyping · usability testing COMMON REQUESTS I DELIVER As a UI UX Designer, Product Designer, and Web Designer: SaaS dashboard redesign · admin panel UX overhaul · new SaaS MVP from scratch · web app UI design · website and product site redesign · Figma design system audit and build · Figma mobile app design from scratch · mobile app redesign · onboarding and activation redesign · UX audit of an existing product · AI chat and agent interface design · custom web design · Figma wireframe and mockup creation · style guide and brand style guide · landing page design · graphic design for product and marketing · WordPress website design · collaboration with your web developer or product manager on every handoff HOW I WORK Discovery → Research & flows → Wireframes → UI design → Prototype → Handoff (dev-ready specs, components, documented states) I ask about your users and data model before I open Figma. Design decisions in real software are constrained by things that aren't visual. My process as a UX Researcher: competitor analysis, journey mapping, and usability testing back every UI UX Designer decision, not guesswork. WHY TEAMS HIRE ME ▪ UI UX Designer, UX/UI Designer, Product Designer — 6+ years specialising in SaaS, Web and Website Design ▪ Top Rated with 100% Job Success across 95 contracts and 3,186 hours ▪ Products I've designed serve over 1,000,000 monthly users ▪ Engineering Master's degree — I read unit economics and API docs in the same afternoon ▪ UI UX Designer Figma expert: clean files, components, tokens, documented states ▪ Embedded with engineering — I think in components and design systems as a Web Designer and Graphic Designer ▪ UI UX Designer for AI products, Mobile App UI UX Designer, Graphic Designer for brand and product INDUSTRIES & TOOLS SaaS · B2B · FinTech · HealthTech · AI/ML · EdTech Figma, FigJam, Maze, Miro · Handoff to React, Next.js, Webflow, Framer, WordPress · Notion, Jira, Linear AI: Claude, ChatGPT, Grok, Lovable, Midjourney -- Building or redesigning a SaaS product, dashboard, web app or corporate website? As your UI UX Designer, Product Designer, and Web Designer, send me a message with a link to what you have. I'll reply within a day with an honest read on what I'd change. UI UX Designer SaaS expert, Web Designer, Website Designer, Product Designer, Mobile App UI UX Designer, Graphic Designer - Figma-first, dev-ready design for SaaS and B2B platforms that grows revenue. Click INVITE to discuss your project