
Elisey Kolev
Verified Expert in Design
UX/UI Designer
Sofia, Bulgaria
Toptal member since November 8, 2017
Elisey turns complex, data-heavy products into AI-powered tools people trust and actually use. He halved scientific literature screening time for medical device teams, shaped an AI clinical platform analyzing 350+ billion healthcare records through its $47M Series B and C, and lifted a global cybersecurity firm’s task efficiency by 30%. With 15 years of experience, he now designs agentic AI workflows and prototypes in code to get from idea to shipped product fast.
Experience
- Mobile App Design - 12 years
- User Experience (UX) - 12 years
- User Interface (UI) - 12 years
- UX Research - 12 years
- Architectural Design - 12 years
- B2B - 8 years
- Web Platforms - 8 years
- Medical Software - 8 years
Portfolio
Work Experience
Senior Product Designer (Freelance)
Sanara Health
- Led product design for an AI-native critical-care platform from March to July 2026, taking it from concept to MVP across five connected workflows: documentation, coding, quality improvement, task management, and clinical handoffs.
- Mapped how ICU clinicians move through a shift and built the product’s structure and core interactions around those moments, so five workflows worked as one product.
- Designed the human-in-the-loop model for AI: clinicians review, edit, accept, or dismiss every AI-generated note, code, and quality check before anything reaches the signed record.
- Turned documentation into action by designing task extraction and assignment, so decisions made on rounds carried straight into follow-up work and shift handoffs.
- Built a reusable component system and interaction patterns that gave engineering one consistent foundation for five interconnected clinical workflows.
- Partnered directly with founders, critical-care clinicians, and engineers, turning clinical requirements into product decisions as the MVP took shape.
- Prototyped and validated interactions in code with Cursor, alongside Figma and Paper, closing the gap between design intent and what engineering shipped.
Senior Product Designer (Freelance)
CiteMed, AI-Powered Clinical Evidence Platform
- Led product design for CiteMed from February to July 2026, reshaping an AI-assisted evidence platform that medical device teams use for regulatory submissions after feature-by-feature growth had made it hard to navigate.
- Restructured 10+ navigation options into four review stages: Protocol, Screening, Full-Text Review, and Reports. Researchers could now move back and forth through an iterative review instead of following a forced linear path.
- Cut literature screening time by 50% by keeping abstracts, AI-highlighted passages, and Retain, Maybe, or Exclude decisions in a single view.
- Designed guided search that turns a plain-language research question into database-ready syntax, plus a PICO-based query builder with real-time validation for experts who want full control.
- Redesigned full-text review around study arms, linking every extracted value to its source passage so researchers could verify evidence at a glance.
- Set the product’s core AI principle: AI suggests, researchers decide. Applied it across screening recommendations, data extraction, and AI-powered columns.
- Designed Clio, an agentic AI assistant that summarizes, extracts data, finds studies, and organizes references. For multi-step actions, it shows its plan and asks for approval one step at a time.
- Created a shared reference library with AI-powered columns and smart lists that update as new research arrives, so teams can reuse evidence across device reviews.
- Established reusable design patterns and a design system that kept a growing set of workflows consistent for engineering.
- Partnered with the CEO, product, engineering, and industry experts to turn complex regulatory research needs into shipped product decisions.
Lead Product Designer (Long-term Contract)
Health Data Analytics Institute
- Led product design for HDAI’s Health Vision from February 2023 to September 2026, taking an AI clinical platform from first concepts through a $16M Series B and $31M Series C. Used by Houston Methodist, Cleveland Clinic, and Dana-Farber.
- Turned 350+ billion records on 140+ million patients into a real-time, prioritized patient roster that updates as new notes, diagnoses, and encounters arrive.
- Introduced Focus after testing showed even filtered lists overwhelmed clinicians. It surfaces only the highest-risk patients in a population, such as the top five admitted patients by mortality risk.
- Designed progressive filtering, Smart Cohorts, and role-based Saved Views, so surgical teams and discharge nurses could return to their own patient lists in one click instead of rebuilding them.
- Designed Patient Spotlight, a real-time snapshot of a patient’s risks, trends, and AI-generated summaries, with every insight linked to its source note so clinicians could verify before acting.
- Made predictive scores easy to interpret with risk quintiles, population comparisons, and contributing-factor breakdowns, so clinicians could see why a patient was flagged, not just that they were.
- Connected conversational AI and generated summaries to the patient record, keeping the source behind every AI answer one click away.
- Designed for real care decisions, from pre-operative clearance and discharge planning to readmission prevention and early heart-failure outreach.
- Partnered with the CTO, product, engineering, and clinicians, prototyping in code and validating interactions in working builds before they reached production.
- Established the information architecture, interaction patterns, and design system the platform grew on. HDAI’s VP of Customer Engagement credited this work with setting the standard for the company’s other products.
Lead Product Designer (Freelance)
Fairo AI
- Led UX and product design for Fairo, an early-stage AI platform, from September 2024 to July 2025, working directly with the founders to set product direction and priorities.
- Helped reposition Fairo from AI governance to agent tracing and deployment as teams moved from experimenting with AI to running agents in production, then carried that direction through the product and marketing site.
- Designed developer-first onboarding that let AI engineers connect Fairo to their existing agents and see their first traces.
- Designed the trace explorer, making each model call, tool call, and decision step easy to inspect when engineers debug agent behavior.
- Designed setup and management for AI Runnables and Workflows, so engineers could configure and deploy agents quickly while keeping clear control over how they run.
- Brought goals, KPIs, models, data, documents, and risks into one workspace, giving teams a single place to track the value and risk of every AI use case they run.
- Created reusable UI components and interaction patterns that kept a fast-changing product consistent through the pivot.
- Worked hands-on with engineering in short cycles, making product decisions quickly and moving designs straight into production.
Senior Product Designer (Freelance)
Covision
- Led a five-month redesign of Covision’s event management CMS, from December 2024 to April 2025, for a B2B platform that runs in-person, virtual, and hybrid events.
- Diagnosed why a CMS built by developers alone held event teams back: key tools were buried in a cluttered side menu, every page was a flat table with no hierarchy, and the page builder had no preview or styling.
- Rebuilt the information architecture around the event itself, replacing a crowded side menu with seven clear sections: Overview, Agenda, Attendees, Content, Communication, Engagement, and More.
- Designed an event overview as the new starting point, surfacing registrations, session attendance, recent signups, today’s sessions, and quick actions at a glance.
- Turned a basic link-based page builder into a no-code editor with agendas, speaker lists, carousels, and media, each configurable for layout, colors, visibility, and behavior.
- Added real-time desktop and mobile previews so planners could see exactly what attendees would get before publishing.
- Introduced component-level audience targeting driven by attendee data such as role, department, and session attendance, so planners could personalize content without duplicating pages.
- Centralized brand controls for logos, colors, fonts, and light, dark, or auto themes, applied automatically across every page and component.
- Redesigned core event operations, including the agenda planner, registration flows, and interactive maps, so teams could coordinate logistics and attendee experiences in one place.
- Modernized the product without a rebuild, designing every change to fit the existing architecture and rolling it out step by step with developers so delivery never stalled.
Senior Product Designer (Freelance)
Briggs & Walker
- Led product design for Briggs+Walker from December 2024 to July 2025, a face-to-face sales and fundraising platform used by organizations such as UNICEF, Amnesty International, the Red Cross, KPN, and HelloFresh.
- Audited the platform end to end, mapping UX problems across campaign planning, location management, scheduling, and field operations to set the redesign’s priorities.
- Restructured the product around how field operations actually run, making the links between campaigns, locations, teams, schedules, and agents clear at every step.
- Simplified multi-campaign planning, so coordinators could allocate field agents and locations across several advertisers’ campaigns with less effort.
- Designed the mobile experience for field agents working door to door and on the street, so they could see what to do next, log their work, and move between tasks quickly.
- Designed one consistent product for two very different users: planners managing operations from a desk and agents working on their feet, with each experience fitted to its context.
- Designed dashboards and live performance views that gave teams real-time visibility into shifts, conversions, and campaign results.
- Worked closely with product, support, and engineering, using support insights to pinpoint real friction and moving refined designs into production.
Senior Product Designer (Freelance)
Mediflix, Inc.
- Led product design for Mediflix’s conversational AI from October 2023 to May 2024, turning a health streaming library of videos from 150+ leading specialists into a video chatbot that answers patients’ questions.
- Ran the first user interviews, validating the video chatbot concept before build and uncovering the opportunities that shaped what the team designed next.
- Designed conversations that respond to how people feel, not just what they ask, so the chatbot could pick up on worry or confusion and reply in a calm, supportive way.
- Designed how the chatbot pairs AI-generated answers with specialist video, keeping responses within set guardrails so patients got guidance they could trust in a high-stakes health context.
- Designed the app that connects the chatbot to Mediflix’s video library, letting patients move smoothly between conversation, recommended videos, and deeper browsing.
- Structured the library’s information architecture so patients could find, watch, and follow expert guidance across areas such as heart health, women’s health, oncology, and Parkinson’s.
- Partnered with product management, engineering, and executive leadership to prioritize and ship improvements across the chatbot and video experience.
Senior Product Designer (Freelance)
Biasi Consulting Limited
- Led UX strategy and design for Biasi Consulting from December 2021 to February 2022, taking an educational assistant platform for students navigating online learning and university applications from research to a working MVP.
- Mapped the competitive landscape across online education and university application tools, identifying the gaps that shaped how the platform was positioned.
- Researched the pain points, expectations, and needs of students and parents, turning the findings into the problem the product was built to solve.
- Designed one information architecture for three very different users: students, parents, and teachers, so each could get started quickly and find ongoing support.
- Mapped the platform’s functionality in low- to mid-fidelity wireframes, settling structure and flows before investing in visual design.
- Built the MVP directly in Bubble.io, a no-code tool, cutting development time and cost and letting the team ship changes as soon as user feedback came in.
Product Designer (Freelance)
Health Picture
- Led product design for Health Picture from June 2020 to January 2021, HDAI’s first product: a web app that turned 250 billion Medicare claims into a clear personal health history and predicted health risks.
- Designed for Medicare members 65+ and their caregivers, many living with vision, memory, or attention challenges, guiding every decision by five barriers: design, knowledge, access, installation, and trust.
- Built personas and 10 user stories from stakeholder interviews and input from medical experts, grounding the product in how older adults actually manage their health.
- Turned scattered paper claims into one searchable health history of conditions, medications, procedures, providers, tests, and visits, with every visit laid out on a clear timeline.
- Explained predicted risks such as heart failure hospitalization, stroke, and diabetes in plain language, comparing each with same-age averages so members could understand them without medical training.
- Designed a 24-month health score that highlighted the specific events behind each change, so members could see why their health had shifted.
- Designed consent-based caregiver access, letting members invite and approve family caregivers who often support them from another state.
- Simplified sign-up to four steps with one question per screen and a clear privacy promise, addressing older adults’ concerns about staying safe online.
- Added a dedicated COVID-19 risk view based on CDC guidelines and designed every view for both mobile and desktop.
- Delivered the product that launched the company, laying the groundwork for its later shift to clinical platforms.
UX Architect (In-house Contract)
Cybersecurity Company
- Designed data-intensive investigation tools from May 2018 to September 2020 for government security and law enforcement agencies, where speed and accuracy were critical.
- Traveled to agencies across several continents to interview users in person, mapping their workflows and turning critical needs into the use cases that shaped the product.
- Ran live usability tests with real users in multiple countries, refining navigation, content, and flows to cut task time by 30%.
- Restructured the information architecture of data-heavy interfaces, giving analysts fast access to critical information when decisions were time-sensitive.
- Designed wireframes for a data-driven web application, turning complex, multi-layered filters into a coherent system for precise, efficient data retrieval.
- Led UX research and design across the platform, applying consistent architecture and interaction principles so every product area worked the same way.
Lead Product Designer (Freelance)
Bloom Dental
- Led UX and UI design for Bloom Dental Group from December 2017 to March 2018, shaping a new practice-management SaaS for dental offices ranging from single clinics to multi-location practices.
- Benchmarked existing practice-management products and found none that combined the functions practices needed with an interface staff could use without workarounds.
- Interviewed stakeholders and dental staff about their daily work, uncovering cluttered screens, poor navigation, and tasks like notes, reports, and appointment reminders still done by hand.
- Designed for four very different users: practitioners, dental assistants, front-desk staff, and patients, defining personas and user stories for each.
- Scoped 12 core features, from patient overview, imaging, and exams to scheduling, billing and insurance, messaging, and analytics, organized into clinical and patient-experience architectures.
- Designed tools to replace manual work, including clinical notes, shareable doctor’s report cards, and appointment reminders, built into the daily workflow instead of handled by hand.
- Designed a patient portal where patients could complete forms, review treatment plans, schedule visits, and contact the office.
- Tested ideas early with paper sketches alongside stakeholders and dental professionals, then moved to wireframes and functional high-fidelity prototypes before development.
- Delivered a UI kit and style guide covering typography, color, and core components, giving developers a consistent foundation to build from.
Product Designer (In-house Contract)
GlaxoSmithKline
- Led UX and UI within GSK’s innovation team from March 2015 to April 2018, owning digital health products end to end, from first concept through development support and pilot launch.
- Designed a companion app for asthma patients that built inhaler use into daily routines with timely reminders, helping patients stay on track with their treatment.
- Designed condition and treatment tracking for the asthma app, giving patients a clearer view of how well they were managing their asthma over time.
- Partnered with Sensodyne to design a companion app for its smart electric toothbrushes, turning data from the connected brush into feedback that helped users build better brushing habits.
- Partnered with Physiogel to design an app that automatically analyzed microscopic photos of users’ skin and compared results over time, so they could see how their skincare routine was working.
- Designed across three very different contexts, a medical condition, a connected device, and automated skin analysis, with one consistent focus: helping people build healthy daily habits.
- Supported engineering through development and into pilots, keeping each app true to the design and resolving UX questions as they came up.
UI/UX Designer (In-house Contract)
SCAS
- Designed and coded web platforms from October 2011 to September 2014 for the Student Computer Art Society (SCAS), a national Bulgarian non-profit pioneering digital media in learning since 1992.
- Designed a career development platform that helped aging employees extend their working lives, with learning content and navigation built for older workers.
- Designed a media literacy and internet safety platform that combined resources, educational games, and practical guidance to make online risks easier to understand.
- Designed a training platform on HIV and AIDS prevention, presenting a sensitive health topic in a clear, approachable way for learners.
- Built the front end of each platform, turning designs into working websites and owning both design and code.
- Designed digital learning platforms for public-interest causes across three very different audiences, older workers, internet users, and health learners, adapting tone and structure to each.
Education
Bachelor's Degree in Traditional Animation and Arts
New Bulgarian University - Sofia, Bulgaria
Professional Qualification in Computer Science
Technology School of Electronic Systems "ELSYS" - Sofia, Bulgaria
Skills
Tools
Adobe Photoshop, Figma Component Library
Platforms
Figma, Web, Mobile
Industry Expertise
Healthcare
Other
Mobile UI, Wireframing, Mockups, Web UX Design, Platform Design, Web UI Design, Information Architecture (IA), UI Prototyping, User Research, Mobile Apps, B2C, Prototyping, SaaS, Responsive UI, UX Architecture, User Flows, UI Design, B2B, Web Platforms, Medical Software, User Experience (UX), UX Research, User Interviews, User Interface (UI), Web Design, Healthcare Management Systems, Mobile App Design, UX Prototyping, Mobile UX, App Design, UX Design, Product Design, SaaS Design, DataViz, Data Visualization, Dashboards, Web App Design, Web App UI, Web App UX, Dashboard Design, Design Leadership, User Personas, Healthcare Services, Responsive Web Design (RWD), Mobile Design, UX Wireframes, Mobile UX Design, Mobile UI Design, Architectural Design, Complex Application User Interfaces (UI), Software Design, Usability, Artificial Intelligence (AI), MVP Design, Visual Design, UX Audits, Design Systems, UX Flows, User Experience Design, Business to Business (B2B), UX Strategy, App UX, User Journeys, Enterprise Design, Software as a Service (SaaS), AI Design, AI-powered Product Design, Agentic AI, Conversational AI, Product Strategy, Conversational Design, Agile, Data Reporting, Regulatory Compliance, Compliance, Interactive Prototypes, AI Chatbots, AI-enabled Applications, Chatbot Conversation Design, Chatbots, Desktop App Design, Data-heavy Design, Web Applications, High-fidelity Mockups, User Journey Maps, UI Components, High-fidelity Prototypes, High-fidelity Wireframes, Healthtech, Medtech, Healthcare Software, Electronic Health Records (EHR), EPIC Electronic Health Records (EHR), Minimum Viable Product (MVP), User Testing, A/B Testing, Web Development, Object-oriented Programming (OOP), Responsive Web Apps, Financial Data, Design, Content Management Systems (CMS), Interaction Design (IxD), Workflow Design, Cursor AI, Claude Code
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