Elisey Kolev, Designer in Sofia, Bulgaria
Elisey is available for hire
Hire Elisey

Elisey Kolev

Verified Expert  in Design

Bio

Elisey is a senior product designer with 10+ years of experience in UI/UX. Known for transforming complex issues into user-centric solutions, he effectively aligns products with user needs and business goals. Elisey has designed a predictive analytics platform that uses generative AI to better understand outcomes and costs across 350+ billion healthcare records. His strategic approach has also helped a global cybersecurity firm improve its architectural design and boost task efficiency by 30%.

Portfolio

Work Experience

Lead UX/UI Designer

2022 - 2023
AI-driven Health Analytics Company
  • Designed an intuitive platform adopted by leading US hospitals, including Cleveland Clinic and Houston Methodist, enabling healthcare providers to accurately analyze patient health data and predict risks.
  • Created a logical and user-friendly product architecture and layout for patient data, ensuring healthcare professionals can quickly access and interpret critical information.
  • Developed and maintained a scalable design system to ensure a consistent user experience across the platform, using unified colors, typography, and UI components.
  • Collaborated with cross-disciplinary teams to conceptualize and launch AI-driven tools, empowering medical experts to perform advanced patient analysis and improve care quality.
  • Led workshops and brainstorming sessions to integrate user-friendly design and information architecture (IA) into the platform, simplifying complex AI features for end users.
  • Implemented user feedback loops to continuously improve the platform's usability, ensuring it meets the evolving needs of healthcare professionals.
Technologies: Figma, UX Design, UI Design, Product Design, Information Architecture (IA), Architectural Design, User Experience (UX), Healthcare Management Systems, Medical Software, UX Research, User Interviews, Web Design, Wireframing, Mockups, Web UX Design, Platform Design, UI Prototyping, User Research, Prototyping, SaaS, B2B, Healthcare, Web UI Design, Responsive UI, UX Architecture, User Flows, UX Prototyping, SaaS Design, DataViz, Data Visualization, Dashboards, Web App Design, Web App UI, Web App UX, Dashboard Design, Design Leadership, User Personas, Healthcare Services, UX Wireframes, Complex Application User Interfaces (UI), Software Design, Usability, Artificial Intelligence (AI), MVP Design, Web, Visual Design

Mobile UX/UI Designer

2022 - 2023
Mediflix, Inc.
  • Designed a user-friendly app that links to the platform's large video database, allowing a video chatbot to answer patient questions on various topics, improving user interaction and access to healthcare advice.
  • Strategically planned the architectural design to ensure users can easily find, interact with, and navigate through the expert guidance videos, enhancing the overall user experience and ensuring seamless access to vital healthcare information.
  • Transformed a library of expert advice videos into a friendly chatbot that can have conversations, understand users' questions and feelings, and recommend helpful videos in an easy and supportive way.
  • Led and carried out the first user interviews, confirming the value of the video chatbot concept and identifying opportunities for improvement and innovation.
  • Collaborated with product management, developers, and executive leadership to strategically plan and implement impactful product enhancements.
Technologies: User Interface (UI), UI Design, UX Design, User Experience (UX), Product Design, Web App UX, Web App UI, Web App Design, Mobile Apps, Mobile App Design, Mobile UI, Mobile UX, B2C, Mobile Design, App Design, Figma, Architectural Design, Medical Software, UX Research, User Interviews, Wireframing, Mockups, Platform Design, Information Architecture (IA), UI Prototyping, User Research, Prototyping, SaaS, Healthcare, Responsive UI, UX Architecture, User Flows, UX Prototyping, Minimum Viable Product (MVP), SaaS Design, Design Leadership, User Personas, Healthcare Services, Responsive Web Design (RWD), UX Wireframes, Mobile UX Design, Mobile UI Design, Software Design, Usability, MVP Design, Web, Visual Design, Mobile

Senior UI/UX Designer

2021 - 2022
Biasi Consulting Limited
  • Conducted research into competitor products in the online education and university application domains, identifying gaps and opportunities to position our educational assistant platform innovatively.
  • Executed research targeting students and parents, diving into their pain points, expectations, and needs to derive insights that would shape and validate the problem-solving approach of our product.
  • Led the architectural design of the product's information setup, carefully considering different users (students, parents, and teachers) to ensure everyone could easily start using it and get continuous support.
  • Initiated the design process by creating low to mid-fidelity wireframes, using architectural principles to map out the platform's functionalities and ensure a structured and user-friendly design approach.
  • Led the UX strategy and design for the MVP of the educational assistant platform, ensuring a user-friendly, intuitive product that laid the foundation for future development.
  • Used the no-code tool Bubble.io to quickly develop the MVP of the educational assistant platform. This method saved time and money, allowing us to make fast changes based on user feedback.
Technologies: UX Design, User Interface (UI), Responsive Web Design (RWD), Product Design, UX Research, Figma, Wireframing, Information Architecture (IA), Mobile Design, Minimum Viable Product (MVP), Architectural Design, User Experience (UX), User Interviews, Web Design, Mockups, Web UX Design, Platform Design, UI Prototyping, User Research, Prototyping, SaaS, Web UI Design, B2C, Responsive UI, UX Architecture, User Flows, UI Design, UX Prototyping, App Design, SaaS Design, Web App Design, Web App UI, Web App UX, User Personas, UX Wireframes, Complex Application User Interfaces (UI), Software Design, MVP Design

UX/UI Specialist

2021 - 2022
Knowsis Limited
  • Worked with stakeholders to gather valuable industry know how and created the platform's information architecture.
  • Defined the target user audience for the platform based on data gathered through stakeholder interviews and UX research.
  • Researched competitor products within the ESG industry and mapped out opportunities.
  • Created low to mid fidelity wireframes early in the design process, ensuring that we have a clear understanding of the functionalities and designs that the software needs to support.
  • Created the visual design for the platform's interface.
Technologies: Dashboard Design, UI Design, Data Visualization, Product Design, Figma, UX Research, Information Architecture (IA), User Interface (UI), Minimum Viable Product (MVP), User Experience (UX), Web Design, Wireframing, Mockups, Web UX Design, Platform Design, UI Prototyping, User Research, Prototyping, SaaS, B2B, Web UI Design, Responsive UI, UX Architecture, User Flows, UX Prototyping, App Design, SaaS Design, DataViz, Dashboards, Web App Design, Web App UI, Web App UX, User Personas, Responsive Web Design (RWD), UX Wireframes, Architectural Design, Complex Application User Interfaces (UI), Software Design, MVP Design

UI/UX Specialist

2020 - 2021
Health Picture
  • Designed an easy-to-use, responsive web platform that organizes significant medical records clearly and shows the user's relative health risks for acute conditions.
  • Created stories for two main users (personas) using insights from chats with medical experts, to make sure our design really fits what users need and want.
  • Used architectural design to build the steps users take, especially focusing on older people with Medicare insurance and their caregivers, to make sure they can easily keep an eye on health, care visits, procedures, risks, and more.
Technologies: Figma, UX Prototyping, UX Research, Mobile UX, App Design, Mobile UI, User Flows, UX Design, Product Design, UI Design, User Experience (UX), User Interviews, User Interface (UI), Mobile App Design, Web Design, Wireframing, Mockups, Web UX Design, Platform Design, Information Architecture (IA), UI Prototyping, Healthcare, User Research, SaaS, Web Platforms, Medical Software, Healthcare Management Systems, 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), Minimum Viable Product (MVP), Mobile Design, Mobile UX Design, Mobile UI Design, Architectural Design, Prototyping, B2C, UX Architecture, UX Wireframes, Software Design, MVP Design, Web

UX Architect

2018 - 2020
Cybersecurity Company
  • Designed user experiences for products aimed at preventing terrorism and crime, ensuring they were tailored to the high-stakes, data-sensitive needs of security professionals.
  • Conducted thorough interviews with users from various crime-fighting agencies, diving deep into their workflows to identify critical needs, and developing use cases that directly address their unique challenges and requirements.
  • Revised and improved the product's information architecture, employing strategic architectural design principles to ensure optimal organization, accessibility, and user-friendliness of data-intensive interfaces.
  • Ensured the architectural design supported quick and intuitive access to critical security data, enabling users to make timely and informed decisions in sensitive scenarios.
  • Developed detailed wireframes with a strong emphasis on architectural design to create a data-driven web application, ensuring complex filters were presented in a coherent, user-friendly manner to facilitate precise and efficient data retrieval.
  • Conducted usability tests, refined navigation and content, and improved architectural design, reducing user-task time by 30% through streamlined flows and intuitive interactions.
  • Led the UX research and design processes, ensuring architectural design principles were consistently applied, enhancing user experience across the entire platform.
Technologies: Adobe Photoshop, B2B, User Experience (UX), User Flows, Prototyping, Mobile UX, App Design, Mobile UI, UX Design, Product Design, UI Design, UX Research, User Interviews, User Interface (UI), Mobile App Design, Wireframing, Mockups, Web UX Design, Platform Design, Information Architecture (IA), UI Prototyping, User Research, SaaS, Web Platforms, SaaS Design, DataViz, Data Visualization, Dashboards, Web App Design, Web App UI, Web App UX, Dashboard Design, Design Leadership, User Personas, Responsive Web Design (RWD), Mobile Design, Mobile UX Design, Mobile UI Design, Architectural Design, Web Design, Figma, Web UI Design, Mobile Apps, Responsive UI, UX Architecture, UX Prototyping, UX Wireframes, Complex Application User Interfaces (UI), Software Design, Usability, Web, Visual Design, Mobile

Lead UI/UX Designer

2017 - 2018
Bloom Dental
  • Collected and compared data on the strengths and weaknesses of existing dental practice management products.
  • Performed interviews with the stakeholders and potential users (dental practices) to better understand their workflow, needs, and standard practices.
  • Prepared user personas based on the key insights gathered from user interviews.
  • Defined the different user's goals by writing user stories.
  • Created user flows to define the actions the users would take to achieve their goals.
  • Crafted detailed wireframes of the administrative tools, clinical procedure tools, and patient portal.
  • Finalized the UI/UX of the dental practice software.
Technologies: Prototyping, UI Design, Mobile UX, User Flows, App Design, Mobile UI, UX Design, Product Design, User Experience (UX), UX Research, User Interviews, User Interface (UI), Mobile App Design, Web Design, Wireframing, Mockups, Web UX Design, Platform Design, Information Architecture (IA), UI Prototyping, Healthcare, User Research, SaaS, Web Platforms, Medical Software, Healthcare Management Systems, SaaS Design, Data Visualization, Dashboards, Web App Design, Web App UI, Web App UX, Dashboard Design, Design Leadership, User Personas, Healthcare Services, Responsive Web Design (RWD), Minimum Viable Product (MVP), Mobile Design, B2B, Web UI Design, Responsive UI, UX Architecture, UX Prototyping, DataViz, UX Wireframes, Mobile UX Design, Mobile UI Design, Architectural Design, Software Design, Web, Visual Design

UI/UX Designer

2015 - 2018
GlaxoSmithKline
  • Created the UI and UX for a mobile companion app for asthma patients that aims to assist them in their daily routines by reminding them to regularly perform their inhalations and helping them to better manage their condition and treatment.
  • Partnered with Sensodyne to create the UI and UX for a mobile companion app that integrates with their smart electric toothbrushes and assists users in their dental hygiene habits.
  • Collaborated with Physiogel to create the UI and UX for a mobile application that allows users to take microscopic photos of their skin and then analyze and compare the results of their daily skincare.
Technologies: Adobe Photoshop, Prototyping, App Design, UX Design, Product Design, User Experience (UX), UX Research, User Interviews, User Interface (UI), Mobile App Design, Web Design, Mobile UI, Wireframing, Mockups, Web UX Design, Platform Design, Information Architecture (IA), UI Prototyping, Healthcare, User Research, Web Platforms, Medical Software, UI Design, User Flows, 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, Mobile UX Design, Mobile UI Design, Healthcare Management Systems, B2B, Web UI Design, Mobile Apps, B2C, Responsive UI, UX Architecture, UX Prototyping, Minimum Viable Product (MVP), Mobile UX, DataViz, UX Wireframes, Architectural Design, Software Design, Visual Design, Mobile

UI/UX Designer

2011 - 2014
SCAS
  • Designed a web-based educational platform aiming to help extend the working life of aging employees.
  • Created the design for a web platform providing valuable resources, educational games, and guidance on media literacy and internet security issues.
  • Designed a web-based training platform covering aspects of HIV and AIDS prevention.
Technologies: Adobe Photoshop, App Design, Web Design, UX Wireframes, Architectural Design, Wireframing, Mockups, Platform Design, Prototyping, Web UI Design, B2C, Product Design, Web App Design, Web App UI, Web App UX, Web

Education

2011 - 2015

Bachelor's Degree in Traditional Animation and Arts

New Bulgarian University - Sofia, Bulgaria

2007 - 2010

Professional Qualification in Computer Science

Technology School of Electronic Systems "ELSYS" - Sofia, Bulgaria

Skills

Tools

Adobe Photoshop

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, Minimum Viable Product (MVP), Web Development, Object-oriented Programming (OOP), Responsive Web Apps, Financial Data

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
Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring