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💬 "Stas is an A++++ designer. We would highly recommend him anytime. Top-class UI UX designer. Thanks!" - Harmeek Jhuty, CodeRise Technologies Inc. 💬 "10 out 5. Excellent UI UX designer and communicator!" - Julio Vasquez. 💬 "Stas suggested his solutions which worked even better than what we initially envisioned. He delivered everything we asked for in a timely manner. We got a great UX UI design we used for development." - Pavel Garmash, Netcom Interactive. ✦ Top 3% UX/UI designer on Upwork; ✦ 100+ trusted by clients (US, Canada, UK, EU); ✦ 10 years and 10,000+ hours of expertise with clients like: Rently, Tuqqi, SentinelOne, RentBarker, DiDi, Nzvc, Flyby, etc. ——————————————————————————————————— I help businesses of all sizes — from B2B companies and small businesses to ambitious startups — transform complex products into convenient, in-demand digital solutions. One of the startups I worked on has already attracted 𝐨𝐯𝐞𝐫 $𝟓 𝐦𝐢𝐥𝐥𝐢𝐨𝐧 in investments (according to Crunchbase), which confirms the effectiveness of thoughtful design for product growth. I specialize in UI UX design for SaaS, FinTech, web apps, mobile apps, dashboards, and complex digital products. My work covers user flows, wireframes, prototypes, Figma design systems, responsive web design, mobile app design, usability improvements, and developer-ready handoff for startups and product teams. ——————————————————————————————————— 🏆Key Achievements and Experience in Previous Projects: ✔️ Product UI/UX Designer — Tuqqi: 1) Designed UX/UI for the B2B SaaS platform Tuqqi, contributing to securing $5M in funding (Crunchbase). 2) Accelerated time-to-market by 47% through implementing a design system, and increased frontend development speed by 28% using reusable components. 3) Transformed complex product requirements into intuitive user experiences, improving usability and onboarding. 4) Delivered a scalable and consistent design that has been successfully used in the product for 6+ years. 5) Developed cross-platform UX (iOS / Android), achieving 1,000+ mobile app installs. ✔️ UI/UX Designer — Rently: 1) Designed UI/UX for multiple mobile applications (iOS, Android) in the PropTech domain (property search and remote access solutions). 2) Optimized information architecture and navigation, reducing time to find key features by 50%. Implemented solutions that have been scaled in the product since 2019, ensuring design system consistency and sustainability. 3) The product reached 500K+ installs across the App Store and Google Play. ✔️ Product (UI/UX) Designer — Bigger Brains: 1) Conducted user research (segmentation and behavioral analysis) to identify high-priority target audiences for product growth. 2) Designed and implemented a modern UI/UX for a website and e-learning platform featuring 260+ award-winning courses. 3) Optimized structure, content, and CTAs using e-learning best practices, which typically drive a +20–40% increase in conversion rates. ✔️ UI UX Designer for SaaS & Web, Mobile App Design in Figma - Flair: Led end-to-end User-Centered Design (UCD) for a B2B SaaS platform: defined personas and segmentation, optimized key user flows (booking, payments, onboarding, CRM), wireframes and UX architecture, prototypes, and scalable design system (components, variants, auto layout, tokens). ✅ Impact & Results: • Increased revenue by +32% through UX optimization and improved conversion flows. • Reduced user drop-offs by 30%. • Improved user retention by 20%+ via UCD-driven experience enhancements. • Contributed to 56% higher total shareholder return vs. competitors through product. ——————————————————————————————————— 💼 UI UX Designer Process: 🔸 Research - UX research, competitor analysis, stakeholder interviews 🔸 Architecture - User journeys, flows, information hierarchy 🔸 Wireframes - Low/high-fidelity prototypes in Figma 🔸 UI Design - Modern interfaces, design systems, brand guidelines 🔸 Handoff - Dev-ready for React, Flutter, Webflow, Shopify teams 📊 UI UX Designer Industries: • Healthcare & MedTech • Finance, Crypto & FinTech • Retail & eCom • SaaS, AI & Machine Learning • Corporate & Enterprise • Travel & Hospitality 💎 UI UX Designer Software: • Figma • Sketch • Adobe XD • Adobe Photoshop • Adobe Illustrator • React Native • Flutter • Webflow • Shopify UI UX design for SaaS, FinTech, web apps and mobile apps: user flows, wireframes, prototypes, Figma design systems, responsive web design, dashboards, usability, UX research and developer handoff. Keywords: User Interface Design, User Experience Design, UI/UX, UI/UX Design, Mobile App Design, Mobile UI Design, iOS design, Android design, Mobile App Redesign, Wireframes, Responsive Design, Interactive Design. 👉 Press “𝐈𝐍𝐕𝐈𝐓𝐄” or “𝐒𝐄𝐍𝐃 𝐀 𝐌𝐄𝐒𝐒𝐀𝐆𝐄” and you will receive a modern, remarkable UI UX design with a high level of usability in the shortest amount of time possible.

⭐ I design and build what early-stage teams actually need to move forward, whether that's a product prototype, a landing page, a brand, or an investor deck. Not static mockups: real, clickable, live things people can open and use. Your idea stops being a plan and becomes something real. Whether you're raising, launching, or just need a design partner who can take an idea and make it real, I'm the one senior person who designs it and builds it. My roots are in fundraising design: I've spent years making investor pitch decks for early-stage founders, pre-seed to Series A, so I know how to turn a rough story into something that makes investors lean in. That instinct for what earns attention now goes into everything I build, not just the decks. 🏆 Top Rated Plus · 100% Job Success · 240+ projects 🖱️ Clickable product prototypes, designed and shipped live 🌐 Landing pages and web, from concept to deployed ⚡ AI-assisted workflow: on-brand, fast, production-ready 📊 Investor decks and fundraising visuals when you need them 🏛️ Trusted by founders, C-level, and public-sector teams Where I fit: → Most designers hand off a file. I hand off something that works, designed and built. → Vibe-coders ship something that runs but looks rough. I'm a designer first, so it looks like a product people would pay for. → Agencies take a month and $20k–$100k. I'm one senior person: faster, no overhead. → And I build what the team needs, product, web, brand, or deck, not just what fits one category. What I can build for you: → Clickable product prototypes (web + mobile web) → Landing pages, designed and shipped live → Investor pitch decks: tight storyline, data turned into clear visuals → The brand and visual layer around it all 🎯 I've spent years designing for early-stage founders, so I know how to make an idea look real and fundable. Now I put it into things people can actually open and try. Tell me what you're working on, raising, launching, or building. You'll get a partner who designs it and ships it, not just a file. Happy to do a quick first-pass review of what you have before you commit.

🚀 My work helped teams produce 𝟏𝟎𝟎𝟎𝐬 𝐨𝐟 𝐠𝐚𝐦𝐞 𝐚𝐬𝐬𝐞𝐭𝐬 𝐮𝐬𝐞𝐝 𝐢𝐧 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐫𝐞𝐚𝐜𝐡𝐢𝐧𝐠 𝐦𝐢𝐥𝐥𝐢𝐨𝐧𝐬 𝐨𝐟 𝐩𝐥𝐚𝐲𝐞𝐫𝐬 𝐰𝐨𝐫𝐥𝐝𝐰𝐢𝐝𝐞. Studios often lose months fixing art pipelines that weren’t built correctly from the start. To get things moving quickly, I offer a 🎯 𝐅𝐑𝐄𝐄 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 where we review your production needs and asset pipeline. I support studios with full game art production - from modeling to animation and engine integration. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 🧊 3D modeling and rendering 🧍 character modeling and avatar creation 🌍 game environments and props 🎬 3D animation and rigging 🕹️ 2D game art and UI design 👾 pixel art and sprite animation 🔊 sound design for games 𝐓𝐨𝐨𝐥𝐬 Blender • Maya • 3ds Max • ZBrush • Marvelous Designer • Unreal Engine • Unity • Substance Painter • Photoshop • Figma • Aseprite • Spine • Wwise • FMOD 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 Game Assets • 3D Characters • VRM Avatars • Game Environments • Game UI • Pixel Art • Animation • Sound Design I focus on 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐚𝐬𝐬𝐞𝐭𝐬, 𝐨𝐩𝐭𝐢𝐦𝐢𝐳𝐞𝐝 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬, 𝐚𝐧𝐝 𝐬𝐦𝐨𝐨𝐭𝐡 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐰𝐢𝐭𝐡 𝐠𝐚𝐦𝐞 𝐞𝐧𝐠𝐢𝐧𝐞𝐬. 💬 If you’re building a game or interactive project, feel free to reach out - I’m happy to start with a 𝐅𝐑𝐄𝐄 consultation.

Hi, I'm Sergey - a senior full-stack web developer focused on sites, landings, and handoffs you can maintain after launch. I build work that earns trust and drives the next step you need - contact, quotes, intake, or bookings - for businesses that care about clarity, credibility, and a site your team can run after launch. ✨ What you get: a clear offer on the page, working forms and CTAs, mobile-friendly layout, and handoff you can actually maintain. 🛠 Work I take on: • Full-stack web apps (Next.js / React + Node.js APIs, auth, payments, integrations) • Business websites (WordPress, Squarespace, Tilda, Webflow) • Sites from Figma or your brief + brand assets • Landing pages and service sites • Site updates, forms, and SEO basics on your copy 📈 How I work: agreed scope in writing, preview links, fixed milestones, clean access handoff. Updates in Upwork messages. 🤝 Portfolio: business and service sites, landings, CMS builds, and full-stack projects with forms and APIs - see work attached to my profile. ⚙ React, Next.js, TypeScript, Node.js, PostgreSQL, Vercel - or the CMS that fits your team. Send your post or mockups with priority pages - I will reply with a short plan.

I build full-stack SaaS products end to end. Frontend in React/Next.js or Vue/Nuxt, backend in Node with tRPC/REST, Postgres with Prisma, deployed and monitored with Sentry and Posthog in production. Recent proof. I built and shipped my own AI product solo, Phosphene, an AI image generation workspace. Auth, Paddle billing, generation pipelines, graph-based editor, Postgres, deployment on Hetzner. Live at phosphene.cc. Before that I spent 5 years on a B2B energy-brokerage platform (acquired by AppDirect), where I shipped data-heavy dashboards, an AI bill-scanning feature on Gemini, and grew test coverage from 0 to 80% with Vitest and Cypress. 41 Upwork jobs, 8,500+ hours, Top Rated Plus. I work fast, communicate clearly in async, and ship production quality, not prototypes. Good fit if you need a SaaS dashboard or admin tool, an AI feature integrated into your product, a Figma design turned into a working app, or a messy codebase modernized.

Skilled translator with a keen eye for detail and a passion for bridging language barriers. Proficient in multiple languages, I deliver accurate and culturally nuanced translations, ensuring clear and effective communication across different cultures.