💼 I specialize in building mobile apps, from consumer apps and internal tools to marketplaces and social platforms, for founders, startups, and businesses. 🚀 I’ve successfully completed 30+ projects since 2020 👋 Message me for a free consultation 👨‍💻Trusted technical partner 🧠Providing expert advice and technical guidance 💎Delivering digital products with exceptional quality, scalability, and performance 🏆Proven track record backed by excellent client reviews ⚡️Feel free to send me a message to discuss your project 🛠️ Tech stack: React Native, TypeScript, Expo, Flutter, Dart, PostgreSQL, Supabase, Firebase, Neon, Clerk, AWS, Google Cloud, Sentry, Amplitude, Codemagic, Fastlane, Revenue Cat, Superwall, AppsFlyer, Adjust, Branch, Posthog, Resend, Cursor, Flutterflow, Adalo, Make, Zapier, n8n, Mixpanel, Twilio, Stripe, Postman, Canva, Figma, Miro, Notion, Open AI, Anthropic, Google Gemini, Vercel 💼 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗢𝗳𝗳𝗲𝗿𝗲𝗱 → Mobile App Development → MVP Development → AI Integrations & AI Agents → Custom Code Development → UI/UX Design → Consultations 📱 𝗔𝗽𝗽𝘀 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗱 → E-commerce Apps → Learning platforms → Booking apps → Marketplaces → CRM Systems → Social Networks → Mindfulness Apps → Fitness Apps → Travel Apps → AI Apps ⚙️ 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗲𝗱 → User Authentication → In-app Purchases → Paywalls → API Integrations → Onboarding Flows → Geolocation → Push Notifications → Payment Gateway Integrations → User Profiles → Ratings & Reviews → Video & Audio Integration → Analytics Integration → Notifications → Admin Panels → AI Integrations → AI Agents ✉️ If you have a project or need a consultation, just drop me a message ✉️ ⚡⚡⚡ Discounts available for long-term or large projects ⚡⚡⚡

⚡ Results-driven software engineer specializing in cross-platform mobile development, external device integration, and on-device data science solutions. Built 10+ live mobile applications using Flutter, with more than 1,000,000 installs across iOS and Android ⚡ Experienced in building end-to-end solutions, including mobile application development, Bluetooth hardware integration (BLE), Python-based backends. Skilled in real-time data processing and binary protocol parsing. ⚡ Built and deployed machine learning and data science solutions for apps and backend ⚡ Proficient in Flutter (Dart), Android/iOS, Python, Flask, gRPC, and Firebase, with extensive experience designing scalable, modular architectures and collaborating across teams to ensure timely delivery. Deep expertise in Bluetooth/BLE, IoT ecosystems, and deploying apps across the App Store, Google Play platforms. ⚡ Known for solving complex technical challenges and delivering high-quality, maintainable software, with a strong commitment to clean architecture, testability, and continuous product improvement Flutter, Dart, Java, Kotlin, Swift, Python, Flask, Firebase, Android, IOS, Web, Riverpod, Bloc, MobX, gRPC, protobuf, GraphQL, REST API, Internet of Things (IoT)

I help SaaS companies design complex dashboards, CRM systems, and internal tools, enabling users to complete tasks dramatically faster while making onboarding effortless—also in challenging, data-dense environments. ✅ Expert-Vetted (Top 1% on Upwork) ✔ 4,500+ hours designing complex SaaS products ✔ 100% Job Success with consistent 5-star reviews ✔ 90% client retention What My Clients Say ⭐⭐⭐⭐⭐ "It was a delight to work with Dariia. She helped us develop new and improve existing features and got things done quickly and thoughtfully. She constantly brought new creative ideas to the table." ⭐⭐⭐⭐⭐ "Dariia did excellent UX & UI work. She was extremely fast and always had strong ideas for improving the app." ⭐⭐⭐⭐⭐ "Dariia is a true professional. Her knowledge of design is outstanding and her work ethic is rare. She consistently goes out of her way to support her clients." As products grow, even skilled teams can find it hard to keep interfaces simple. I use my UX experience to find what makes things complicated, simplify workflows, and build solutions that help users find and use every feature easily. Clients often get in touch when their platform is hard to use, users have trouble onboarding, or the product needs a better, more scalable design system. I primarily work on SaaS platforms and complex digital products, including: • SaaS platforms • CRM and ERP systems • dashboards and analytics tools • internal business tools • AI-driven platforms • enterprise workflows These products usually have complex logic and lots of data. I focus on making them clear, efficient, and easy for users to understand. Core Expertise • SaaS Product Design • UX Strategy & Product Discovery • Complex User Flows • Dashboard & Data Visualization UX • CRM & Internal Tools • Information Architecture • Interaction Design & Usability Optimization • Design Systems & Component Libraries • Prototyping (Figma) • Usability Testing • Developer Collaboration & Design QA I typically collaborate with: • SaaS founders and startups • product teams scaling complex platforms • companies redesigning dashboards or internal tools • teams preparing their product for growth If you’re building a SaaS product and need a designer who understands complex systems, let’s talk about your project. Message me with your biggest UX challenge or a short description of what you want to improve, and I'll reply with ideas on how I can help.

With 19+ years of experience in software product development, I specialize in helping businesses navigate the complexities of building great software products. Whether you need a Fractional CTO to guide your tech strategy, or a Technical Product Manager to align your product vision with execution, or need help tackling a difficult team or a technical challenge, I bring the expertise needed to ensure success. I’ve led multiple startups and tech teams through major pivots, scalability challenges, and AI driven transformations in both internal processes, and in value delivered to end users. Here’s how I can help: ⚪️ Product Strategy & Roadmaps: Aligning technical solutions and business goals while keeping in mind tight-budgets for quick MVPs, and future-scalability for production roll outs. ⚪️ AI/ML Expertise: Delivered multiple AI/ML solutions for music analysis, golf training, fitness for work verification of industrial workers, tracking fish-species in open waters, and more. Expertise in Edge models, Transfer Learning, and using Generative AI for custom business solutions. ⚪️ Technical Firefighting: With my firm grasp in diverse technologies, I can be your team's last line of defense when facing unexpected technical challenges. I have debugged rare browser crashes, and integrated cutting-edge AI tools into legacy systems to unblock development teams. ⚪️ Team Management: Managing distributed cross-functional teams across time zones, ensuring smooth communication, accountability, motivation and productivity. Identifying and covering-up skill gaps in team with combination of training existing members and recruiting new talent. ⚪️ Project Management: Proven ability to manage small and large projects and implement agile methodologies like Scrum, Backlogs, User Stories, Sprints etc... ⚪️ Synergy of Team, Process and Technology Optimization: Optimized 13+ member development team distributed across 3 countries to 4 member remote team in 3 years - by continual improvements in product architecture, simplifying tech-stack, upskilling team members, agile process optimizations, DevOps and automation. Improved delivery speed by reducing overheads. If your project feels stuck or needs a fresh perspective, let’s talk - I specialize in turning chaos into clarity. Besides executing full projects, I am available for fire-fighting those complicated stuck parts in complex projects, and for consulting on product development and technical architecture. ____________________________________ Things I am good at: Building great software products, saving sinking ships, designing features that improve users daily lives, understanding customer experience at strategic, tactical and transactional levels, maintaining UI/UX design simplicity, translating user needs into technical requirements, managing the product development process from ideation to launch, leading cross-functional teams at scale, ensuring product quality and functionality, estimating and budgeting, negotiating contracts, tech-stack modernization and migration, ensuring regular knowledge-transfer and cross-training among team members, market research to identify user needs and design product features for those needs, competitor analysis from a technical perspective to identify opportunities to extend lead on strengths and catch up on weaknesses. Things I am also good at: Coding great software, gathering awesome teams, local/remote/nearshore/offshore development team management, Agile, SaaS Web App Development, Hybrid and Native iOS/Android Mobile App Development, DevOps, Automated Testing, Full Stack Development, Ai/ML, Code Reviews, Image Processing, Audio Signal Processing, Algorithm R&D, Performance Optimization, JavaScript/TypeScript, Java, C++, Python, Objective C, Swift, Angular, React, NodeJS, Ionic, Native Cordova Plugins, Native Capacitor Plugins, PyTorch, ONNX, TensorFlow, TensorFlowJS, Firebase, WebGL, OpenGL Shading Language for GPGPU, SQL, MongoDB, GitHub Actions, AWS.

I believe things should work. That someone should make the effort to think it through, that the thing does what it's supposed to do, in the simplest way possible. But also, just as importantly, that it actually feels like human made it. So, on every project I start with two questions. What does it do? And how does using it make people feel? And then I start creating. If you’re interested in my work, please write me so we can discuss how I can contribute.

I help startups launch beautiful products without hiring separate designers and developers. For 7+ years I've worked with startups and gone through several accelerators. I've seen teams burn months coordinating between design and dev. Now I do both — I design the experience and build it into working code, powered by AI-augmented workflows. One hire. Design + Code. Shipped. ❤️ Design systems 🏗️ Prototyping 🚀 Motion & interaction ⚡ AI-powered build speed 💪 What I deliver: • Full product design — from research to production UI • Web & Mobile apps (iOS, Android) • Design systems & component libraries • Interactive prototypes & micro-animations • Frontend code (React, Next.js, Tailwind) • Rapid AI-assisted design-to-code pipeline 🛠️ Tools: • Design: Figma, Sketch, Adobe XD, Photoshop, Illustrator • Prototyping: Figma, InVision, Marvel • Code: Cursor, React, Next.js, Tailwind CSS • AI: Claude, GPT, Midjourney, v0 • PM: Asana, Trello, Jira ⭐ What clients say: • «Really great designer & easy to work with» • «His designs are intuitive & fast, and he understands a lot of elements of modern design» • «A super talented frontend developer and designer... very responsive and very accommodating» You don't need a design team. You need one Design Engineer. Let's build your product — from first sketch to launch.

I help businesses replace manual, repetitive work with AI automation and agentic workflows — built on n8n, OpenAI/Claude, and modern APIs — and I can also build the full app or dashboard around them. Most automation freelancers stop at connecting tools. Most app developers can't build autonomous AI agents. I do both, end to end: I map your process, design the automation or AI agent, integrate it into your stack (CRM, SaaS, databases), and ship a reliable, production-ready result. What I build - AI workflow automation (n8n / Make / Zapier): connect your tools and automate operations, sales, support, and back-office work. - Agentic AI & AI agents: autonomous agents and LLM-powered workflows that make decisions, not just move data. - LLM integrations: OpenAI & Claude APIs, prompt engineering, RAG, and vector databases (Supabase / pgvector). - Full-stack AI apps: Next.js, Node.js, Flutter, Supabase, Stripe — MVP to production, web and mobile. - System integration: REST APIs, Zoho CRM, SaaS/ERP tools, webhooks, real-time data. - Rapid PoCs: fast proof-of-concepts to test an idea before you invest in the full build. Recent work - Flip Aid: an autonomous AI agent that turns a single product photo into a complete eBay listing (condition, details, policies) and publishes it. Live on the App Store and Google Play. - AI Finance Dashboard: automated finance operations into one platform with Stripe integration. - AI Proposal Generator: an LLM tool that drafts client proposals automatically. - Tempul Health: led a team of 4 building a consumer health app (full-stack, Flutter + Supabase). Why clients work with me - 100% Job Success on Upwork and a track record of shipping, not just prototyping. - Official FlutterFlow Expert and Featured by FlutterFlow ("Experts of the Year") — top 1% on the FlutterFlow platform. - Clear communication: I translate technical AI concepts into business outcomes and keep you updated in plain language. - I assess whether a process should be automated, improved, or redesigned first — then build for reliability, cost, and measurable impact. If you want to automate a workflow, build an AI agent, or ship an AI-powered app, send me a message and let's scope it.

✅6+ years experience in Flutter and 8 years in mobile application development. 📱💻 ✅I have worked with a startup TOREVER. Which won many startup awards🏆🏅🎖. ✅My apps are available on Google Playstore and Apple Appstore generating 100k+ ARR combined. ⭐️⭐️⭐️⭐️⭐️ ✅I always work on the code quality and project structure to make sure the code remains readable and maintainable in the future. ✅My focus is always on performance, quality and little details in the User Interface to make exceptional User Experience for end users. ✅I use Provider/Riverpod architecture ( Recommended By Google ) to keep the state of the app scalable and maintainable. I am a professional mobile applications developer. Providing high-end Flutter, Android, and Ios development services.

Working on projects starting $2,000+ ⭐ TOP 1% Expert-Vetted UX Auditor & Product Designer on Upwork I'm a UX Audit specialist and product designer with 9+ years of experience — helping SaaS, fintech, and eCommerce teams find exactly where their product leaks users, then fixing it with clean, evidence-based design. I've delivered 200+ projects for 100+ clients, turning vague "something feels off" into ranked, buildable fix lists. My expertise lies in UX Audits, conversion diagnostics, and product usability — from flow mapping and session-data review to wireframes, prototypes, and polished design systems. 100% Figma expert. Tools I use daily: Figma, Maze, Adobe Illustrator, Photoshop, and XD. Every audit finding is backed by data, not opinion, and every fix comes with a clear rationale your team can act on immediately. I combine data-driven UX research with conversion-oriented design and current UX Audit best practices to find exactly where you're leaking revenue — and design the fix. Whether you need a one-off audit of a single flow or a full product diagnostic, I deliver results backed by real research, not guesswork. → Every leak ranked by revenue impact, not just visual polish. → Clear, buildable fix lists — not vague slide decks. → Business-oriented UX Audits that balance usability and growth goals. One highlight from my portfolio: a UX Audit of a Logistics SaaS platform uncovered the root causes behind slow order processing — the resulting redesign led to a 200% increase in orders, 50% fewer errors, and 30% faster checkouts. If you're looking for a UX Auditor skilled in Figma, Conversion Research, Wireframing, and Prototyping, I'd be glad to help you find out exactly where your product is leaking — and fix it. Common problems I solve: Low sign-ups on your landing page? A UX Audit of your funnel identifies drop-off points — I redesign in Figma with Conversion UX strategies that bring +20–45% sign-ups. High checkout drop-off? A Checkout Flow UX Audit finds the friction — clients see 15–35% less drop-off after the fix. Trial users not activating? An Onboarding UX Audit maps where users stall — SaaS UI and Onboarding Flow fixes improve trial-to-activated users by 30%. Confusing pricing page? A Pricing Page UX Audit plus B2B Web Design rework — expect +28% plan selection. Poor mobile experience? A Mobile UX Audit backed by Responsive Design and PWA fixes — +40% mobile conversion. Users can't find features? A Navigation & IA Audit plus Search & Filters UX in Figma — clients cut tickets and bad reviews by 45%. High churn after first month? A Retention UX Audit identifies the drop-off moment — Subscription App UI fixes reduce churn by 12–25%. Too many support tickets? A Support Flow UX Audit informs Customer Portal, Knowledge Base, and Chatbot UX redesigns — leading to -40% tickets. Marketplace trust issues? A Trust & Checkout UX Audit plus Multi-Vendor Web Design — one jewelry client gained +26% checkouts. Confusing dashboards? An Admin Panel UX Audit plus Dashboard redesign — +20–38% feature adoption. Not sure where to start? A UX Audit is the fastest way to find out — a full diagnostic of your core flow, ranked by revenue impact, delivered as a buildable roadmap in days, not months. Want me to audit your product or redesign a flow that's leaking users? Message me directly — let's chat. UX Audit, Conversion Research, UX Design, UI Design, Figma, Web Design, Wireframing, Prototyping, User Research, Usability Testing, Landing Page, SaaS Design, Responsive Design, Information Architecture, Mockup

𝗜 𝗱𝗼𝗻'𝘁 𝗱𝗼 "𝗾𝘂𝗶𝗰𝗸 𝗳𝗶𝘅𝗲𝘀." 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗮𝘂𝘁𝗼𝗻𝗼𝗺𝗼𝘂𝘀 𝘄𝗲𝗮𝗽𝗼𝗻𝘀. (type my name on google to learn more about me) I don't write proposals. I don't compete on price. If you're comparing me to $15/hour — we're not in the same conversation. No micromanagement. No daily standups. You set the destination. I build the machine. Available in all US timezones. 8 years in SaaS startups. 5 MVPs shipped with Stripe. $30K from automated content I built. 100K+ user platforms. I run a tech conference where 70% of marketing runs itself on n8n. 𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱: You tell me what your team does manually. I tell you which parts are scriptable. Then I script them. The machine runs. Your headcount shrinks. Your output doesn't. • AI workflows that run without supervision — GPT, n8n, custom pipelines • Full-stack SaaS — Rails, Next.js, Python, Supabase, Docker, AWS/GCP • Content engines that produce at scale with zero humans in the loop • Internal tools that delete roles from your org chart • RAG agents, vector search, embeddings — production-grade, not demos 𝗧𝗵𝗶𝘀 𝗶𝘀 𝗻𝗼𝘁 𝗮𝗻 𝗮𝗴𝗲𝗻𝗰𝘆. 𝗢𝗻𝗲 𝗯𝘂𝗶𝗹𝗱𝗲𝗿. 𝗦𝗲𝗿𝘃𝗲𝗿𝘀. 𝗔𝗜.