Stoyan Stoyanov
Verified Expert in Design
Designer
Sofia, Bulgaria
Toptal member since September 25, 2019
Stoyan's human-centric and data-driven approach helps uncover unique growth opportunities with clear and strong value propositions for enterprises and startups. A proven expert in product design, Stoyan has command over an extensive visual design process that delivers outstanding products and services that succeed.
Portfolio
Work Experience
Co-founder & CPO
The Buildforce
- Designed an app that utilizes agentic framework and LLM with minimizable conversation cards and human-in-the-loop breakpoints to keep context and continue the conversation.
- Built a brand identity and brand voice for the Buildforce.
- Created the new frontier UX for our command center that will be pluggable in your product development process for product information retrieval.
- Developed a dynamic dashboard that changed based on your conversation and needs with the LLM.
- Helped in designing the architecture and coping for the agents required to store, retrieve memory, and offload tasks to sub-agents based on the prompts.
- Defined product requirements and needs based on market research, user interviews, and personal experience in the field of product development and design.
- Created the product roadmap for the product prototype development.
Senior Product UX/UI Designer
onsen.fi
- Redesigned the previous tech-heavy app to require only basic web3 knowledge, enabling users to create investment strategies with just a few clicks. This streamlines the complex authorizations and multi-step protocol processes typically involved.
- Built a solid product that now has $6+ million in liquidity; the protocol laga.ag started from 0.
- Created a seamless "no wallet" authentication for Interflow, our internal product. Upon signup, users receive a multi-chain wallet, removing concerns about network selection, token compatibility, and protocol specifics for effortless transactions.
- Created an internal tool that was given to developers for building airdrops for both tokens and NFTs by leveraging the existing client base.
- Redesigned and enhanced the investment strategy builder that can be used by anyone with almost 0 web3 knowledge.
- Designed a multiplayer like Figma dashboard editing and creation for the investment strategies where team members with specific access can collaborate and deploy the dashboard.
- Designed a marketplace for people to reuse deployed public dashboards where they can duplicate them and start with the logic set for the investment strategies.
- Participated in building the tokenomics for the MUSD token on onsen by gathering what is possible from our stack of products, bundling it, and giving it as a utility for the token holders.
Product Designer, UX/UI
Welcome Technologies
- Designed an enrollment flow that reduced the churn rate and time spent to complete.
- Provided scope and feature clarification for gifts and referral systems.
- Redesigned the UI for the rewards center and simplified the UX for the different reward features, which led to higher user engagement.
- Scoped and designed a premium membership dashboard with existing benefits where users can easily read, select, and book a benefit provider.
- Created multiple landing pages and helped restructure the value props of the premium membership program.
- Analyzed, scoped, and designed a complex membership plan containing more than 10 use cases.
- Helped in creating a consistent and simple UI for the platform.
UI/UX Designer
NuIns
- Handled a part-time project that lasted a few months. Led a team of two designers: one UX researcher and one graphic designer.
- Built a new brand for NuIns with my team to reflect the company values.
- Created user flows that translated to high-fidelity wireframes to communicate our proposal to the CEO and CTO.
- Developed the UI for the website, web application, and native ios app.
- Designed a brand and a UI kit for the project to enable further updates to be made easily.
- Facilitated brainstorming sessions with PMs, developers, and the design team.
Chief Product and Design Officer
Eri Digital
- Helped design the first product version, which didn't change a lot. Users were onboarded in less than three minutes, from creation to setting up the checkout (checkout-x.com) and upselling the product (getvanga.com).
- Created the brand narrative, visuals, and logos for both checkout-x.com and the newer product, getvanga.com.
- Grew the team to two designers, five devs, and one COO in checkout-x.com, and then we created the second product, getvanga.com.
- Contributed to the growth of checkout-x.com from $10,000 in MRR to $500,000+ MRR in a year and a half.
- Became a shop owner and grew my store using our products from 0 to $100,000 in revenue with 34% CR and 22% retained customers with just two product stores. This was done just to test our product stack and see how powerful it is.
- Contributed to the brand and the product—which didn't change in terms of UI/UX and the brand—even after getvanga.com was acquired in 2023 after my departure in a private deal from a Canadian Shopify company.
- Was in close touch with our loyal customer base and incorporated their feedback.
- Created an onboarding process, which was in five brainless steps from our web app to connect to Shopify, taking over 10% of Shopify users with our custom solution checkout-x.com; they have changed their terms of service, banning custom checkouts.
- Contributed to the creation of getvanga.com as a subset feature of our existing upsell and cross-sell product that we were offering. The algorithm was simple: just match your history of orders and auto-suggest new complementary products.
Product Designer
Zerobase
- Designed a COVID-19 case tracking app that provides data to local businesses on who is and was infected. The app was called Plinks, and it was an NGO volunteering experience.
- Built, with my team, the brand visuals, scoped the features, designed them, and provided high-fidelity prototypes to the engineers.
- Contributed to the internal business dashboard for tracking infected cases.
- Designed a self-declaration form for people to fill in with a few clicks to track the infection.
- Worked on the QR code scanning system that a customer was able to use once in front of a shop or a business service like a barber.
- Facilitated brainstorming sessions, scoping features, and building the UX journeys.
Senior UX/UI Designer and Researcher
MotelNow
- Redesigned a platform for motel reservations, including the web platform's design adapted for desktop and mobile.
- Scoped features and provided them to the design and development teams.
- Gathered user log data and analyzed existing data from an internal dashboard and google analytics.
- Performed heuristic evaluation on the existing platform.
- Created a UI guideline and components that standardized native Android and iOS platforms to look the same as the web version.
- Designed a user-driven product process and onboarded the CEO to adapt to it.
- Developed an action plan for the web platform and the next steps when finished.
- Optimized and simplified the information architecture and navigation for the entire booking process by introducing a dynamic booking concept.
- Sketched and wireframed the new web platform solution.
- Optimized their brand to convey a luxurious and intimate product.
Lead Product, UX/UI Designer
Scynet.ai
- Designed a cryptocurrency portfolio management product for both Android and iOS. Led the product design process using the design thinking methodology.
- Conducted stakeholder and customer interviews and performed testing sessions to validate the idea and usability studies for optimizing the product.
- Created flexible and scalable information architecture.
- Developed a brand direction for the product and final interface.
- Delivered a Zeplin and InVision prototype, product guidelines, and documentation.
- Led ideation, discovery, and feedback workshops with the core team members.
- Helped the company pivot its idea by bringing solid market and competitive research data to the table.
- Cooperated with developers, co-founders, AI experts, traders, and financial consultants.
Senior UI/UX Designer and Researcher
Combined.ai
- Designed Panto.ai, a central knowledge-based AI-powered voice assistant for Android, iOS, and the web platform.
- Established guidelines for a user-centric design approach for product development.
- Devised patterns for developing ideas for the entrepreneurship in residence program.
- Performed stakeholder interviews, customer research, and market research.
- Utilized script-building techniques to create a voice user interface for all messaging platforms.
- Wrote a script and interaction models for the voice interface.
- Analyzed data for market and user specifics using Google Analytics, studies, and logs, which led to creating a prototype with Dialogflow and InVision.
- Implemented scalable architecture aimed at solving future issues with unknown characteristics.
- Tested ideas to find the best way forward and created usability studies to finalize the product's first version.
- Created the user interface and brand guidelines for Panto.ai.
Senior Product Designer
GoSeemba
- Designed a platform for businesses to manage their business and bring it online from their smartphones. The platform was a native Android app and web platform.
- Performed workshops for requirements, feature analysis, and findings. Completed card sorting, Treejack tests for labels, and architecture.
- Led weekly remote user research and data analysis using an internal dashboard, Kibana dashboard, Google Analytics, social comments, and CRM system feedback.
- Prototyped features and new concepts around the idea. Performed tests and wrote use cases suitable for documentation and testing.
- Ensured a scalable architecture was implemented at the beginning, which only expanded until the end of the product.
- Presented workshops to educate people on-site to perform observation studies and controlled user testing in the context of the use environment.
- Created marketing materials for social ads. Including banners, posters, and Instagram stories. Developed a design system for the product.
- Guided design critique sessions. Led discovery phases both on the product and features.
- Worked closely with our investors and board members (to mention a few, such as LYFT and one of the biggest leaders in the digital workforce).
Product and UX/UI Designer
Snapp Builder
- Designed a CMS and web app builder for people with businesses in developing countries, both for Android and iOS using a hybrid design approach.
- Performed workshops for requirements, feature analysis, and findings.
- Led weekly remote user research and data analysis using internal dashboard, Kibana dashboard, Google Analytics, social comments, and CRM system feedback, as well as contextual inquiries and interviews on the phone.
- Oversaw weekly feature development and UI testing.
- Prototyped using the IONIC framework to test new ideas and concepts.
- Contributed to card sorting, Treejack tests for labels, and architecture.
- Redesigned the native apps on both iOS and Android, as well as the responsive web app.
- Created a design concept and strategy for contextualizing the product in each continent and country.
- Worked on various client projects as a UI designer. Interpretated the specs and created interactive prototypes as deliverables. Companies included Starbucks Chile and Cetilogo's product FakeFighter (a social network for authentic fashion brands).
Education
Technical Degree in Software Engineering & Design
Telerik Academy - Sofia, Bulgaria
Certifications
User Research
Interaction Design Foundation
Mobile User Experience Designer
Interaction Design Foundation
User Experience Design
Interaction Design Foundation
Skills
Tools
Marvel App, Hotjar, Prototyping on Paper (POP), Dialogflow, Sketch, Adobe Experience Design (XD), InVision Studio, InVision App, Lookback, Photoshop CC, Illustrator CC, RealtimeBoard, Principle, Maze, Usertesting.com, Treejack, Zeplin, Adobe Photoshop, Proto.io, InVision, Origami Studio, Google Sheets, Google Analytics, UX Tools, Figma, React Studio, GitHub, Framer X, Shopify Plus, Figma to React, Figma Prototyping, Miro, Sketch 4, AI Tools, Figma Plugins, eCommerce Dashboards, UXPin
Platforms
Web, Software Design Patterns, Firebase, Android, iOS, Shopify, App Builders
Languages
JavaScript, SQL, CSS, HTML
Industry Expertise
Insurance
Other
Cross-platform, Clean Design, Analysis, UI Guidelines, UI Components, Personas, Branding, Market Research & Analysis, UX Architecture, Data-driven Design, APIs, Real-time Data, User Workshops, Process Design, Service Design, Competition Research, Website Redesign, Workflow Optimization, Knowledge Bases, Web UX, UIKit, Bot Management Systems, Open Source, Conversational Scripts, Scalable Architecture, JSON, UML Diagrams, Navigation Design, Customer Experience, Business Services, Web Components, Product Vision, Business Research, Business Design, Use Cases, Push Notifications, Feature Analysis, CMS Made Simple (CMSMS), User Onboarding, Feature Planning, React Components, Facebook Messenger API, Business Verification, Data Scraping, User Experience (UX), User Interface (UI), Usability Testing, UX Research, Product Strategy, UX Analysis, Prototyping, User Flows, User Personas, Information Architecture (IA), Interaction Design (IxD), Responsive Design, Dashboard Design, Mobile App Design, Contextual Inquiry, Observation, Web App UX, Booking Apps, Rapid Sketching, Rapid Prototyping, User Journeys, User Journey Maps, Surveys, Remote User Testing, Web Dashboards, Fintech, Financial UX, Chatbot Conversation Design, Chatbots, Interactive Prototypes, MVP Design, Web UI, SaaS, Responsive Web Design (RWD), UX Audits, Mobile Payments, Checkout, B2B2C, Material Design, iOS App Design, Complex Application User Interfaces (UI), Mobile First, Design Sprints, UX Principles, Fundamental Design Principles, Printing Materials, Graphic Design, Marketing Materials, Remote Work, Product Research, Cryptocurrency, Web Platforms, Product Design, Consumer-facing Product Design, UX Design, Mobile UX Design, UI Design, Mobile UI Design, Web UX Design, Web App UI, Mobile Ready, B2C, Material UI, WebApp, Onboarding, SaaS Design, Style Guides, UI Style Guides, Minimalism, Minimal UI, Software, Software Design, UI Audits, Audits, Persona Design, Web Design, Web Design Principles, Web UI Design, Atomic Design, App UI, App UX, Pencil Sketches, Concept Sketching, UX Sketching, Wireframing, Low-fidelity Mockups, Low-fidelity Prototypes, High-fidelity Mockups, High-fidelity Prototypes, Paper Prototyping, UX Prototyping, Visual Design, Visual Hierarchy, Mobile Prototypes, UI Prototyping, Journey Mapping, Product Journeys, Service Journey Maps, Customer Journeys, Testing, UI Testing, User Testing, User Validation, User Validation Testing, Minimum Viable Product (MVP), Dashboards, Financial Reporting Dashboards, User Needs, Stakeholder Interviews, Gamification, User Requirements, Requirements Analysis, Product Requirements Documentation (PRD), Business Requirements, System Flow, System Requirements, Questionnaires, User Surveys, Quantity Surveying, Online Surveys, Task Flows, UX Flows, Task Analysis, iOS UI Design, Lean UX, Lean Research, Lean Startups, Guerilla Usability Testing, Agile, Agile UX, Product Ownership, Project Leadership, UX Workshops, Workshop Facilitation, Design Workshops, Discovery Workshops, Ideation Workshops, Workshops, Ideation, Discovery, Product Discovery, Customer Discovery, Design Thinking, User-centered Design (UCD), Human-centered Design (HCD), Human-computer Interaction (HCI), Product Roadmaps, Product Support, UX Roadmaps, Feature Roadmaps, Roadmaps, User Stories, Usability, Usability Heuristics, Remote Usability Testing, Web Usability, Usability Analysis, Web App Design, Responsive Web Apps, Web App Testing, Web Applications, Progressive Web Applications (PWAs), PWA, Data Visualization, Data-informed Visual Design, Analytics, Needs Analysis, Qualitative Research, Quantitative Research, Quantitative User Research, Quantitative Analysis, Conversational UX, Conversational UI, Conversational Interfaces, Conversational Design, Voice, Mobile UI, Mobile UX, Mobile App UI, Blockchain, React, React Native, UX Strategy, IA Strategy, Digital Strategy, Creative Strategy, Interactive Dashboards, Holistic Design, Holistic UX Design, Responsive UX Design, UI Research, User Research, Research Methods, Data Analysis, Dark UIs, Big Data UX Design, Interviews, User Interviews, Mobile Design, Mobile-first Design, Mobile Web Design, Mobile Apps, eCommerce UI, eCommerce UX, Design, User Feedback, Product Leadership, Scope, Scope Management, Iterative Testing, Iterative Design, Subscriptions, Project Scoping, Brainstorming, Design Systems, Finance, Algorithmic Trading, Survey Design, Client Interviews, UX Testing, User Interface Engineering (UIE), Teams, Product Mapping, Product Management, Investing, Flutter, Portfolio Management, Cryptocurrency Exchanges, Coinbase API, Bitfinex, BitMEX, Complex Data Analysis, Omnichannel Marketing, Travel Design, Slackbot, Datasets, Big Data, Offline Marketing, User Groups, Twilio, Google Maps API, Accessible Design, Kibana, SMS, Booking UX, Voice User Interfaces (VUI), B2B, Booking Systems, Animated Prototypes, Payment Gateways, Cryptocurrency Payments, Online Payments, Android UI Design, Landing Pages, Lean Canvas, Design Leadership, UX Leadership, Leadership, Payment APIs, Angular, AngularJS, Android Design Guidelines, Web Marketing, Diary Studies, Process Flows, POP, Ionic, Cryptocurrency Wallets, Competitor Analysis & Profiling, Data Processing, Google Places API, Elasticsearch, BrainTree, Statistical Analysis, Data, Mockups, Mobile Mockups, AI Design, Conceptual Design, Creative Thinking, Information Design, Typography, Empathy Mapping, Empathy, Taxonomy, Mobile Navigation, Content, UX Wireflows, Shopify API, Navigation, Use Case Analysis, Customer Interviews, Customer Success, Web3, Cryptographic Protocols, Cross-functional Collaboration, NFT Design, NFT marketplace builder, Payment Processing, Scope Structure, Product Planning, Lean, Data Analytics, Sales, Strategic Planning, User Adoption, Product Branding, Brand Guidelines, Interactive UX, Responsive UI, Responsive Layout, Blockchain Design, Blockchain Wallets, Blockchain as a Service, WYSIWYG Web Builders, web app builder, Flow Diagrams, Customer Research, OAuth 2, Case Studies, Non-fungible Tokens (NFT), AirDrop, Copywriting, Websites, Crypto, Website Design, Tailwind UI, Tailwind CSS, eCommerce, UI Engineering, Brand Logos, UI Branding, UX Branding, App Growth, Growth Marketing, Growth Strategy, Product Growth, Heatmaps, Upselling, Cross-channel Design, Artificial Intelligence (AI), Artificial Intelligence Product Manager, Artificial Intelligence as a Service (AIaaS), Generative Artificial Intelligence (GenAI), Large Language Models (LLMs), Long term memory, Salesforce Knowledge, Knowledge Management, Knowledge Graphs, Vectors, Design Thinking Facilitation, AI UX, Voice UI Design, Voice Chat, ChatGPT, AI Chatbots, AI Agents, Agentic Framework, LangChain, LangSmith, Task Automation, Task Management, Multiplayer, Pitch Decks, Prompt Engineering, User Experience Design, User Experience Strategy, Logo Design, Graphical User Interface (GUI), Infragistics, Hybrid Apps, Design Feedback, Native Mobile Apps, Website CMS, Website Audits, UX Process, Process Audits, Process Automation, Bots, Unmoderated Remote Usability Testing, Startups, Android App Design, UI Patterns, Design Patterns, Trading, Team Leadership, Cross-platform UI, Cross-functional Design, User Intent Scoring
Experience
- Usability Testing - 8 years
- UX Research - 8 years
- Responsive Design - 8 years
- Prototyping - 8 years
- Product Design - 8 years
- User Experience (UX) - 8 years
- User Interface (UI) - 8 years
- Product Strategy - 4 years
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