Oleksandr Khrustalov

Aleksandr Khrustalov

UX/UI Designer / Product Designer

LinkedIn | PORTFOLIO 

Mailsball.com

Professional Summary:

I am a UX/UI designer with experience designing complex interfaces and digital products from concept to launch, specializing in creating logical, user-friendly, and scalable user interfaces for web applications. Possess a technical background (HTML, CSS, JS fundamentals, MERN), enabling effective collaboration with developers and understanding platform limitations. Experienced in working with metrics, DevOps tools, Git version control, and SEO best practices.

Key Skills:

• UX/UI Design: User Research, Wireframing, Prototyping, UI Design, Design Systems, Usability Testing.
• Tools: Figma, Adobe Illustrator, Adobe Photoshop, CorelDraw.
• Frontend: HTML, CSS, JavaScript, React.
• Backend/DevOps: Understanding of MERN stack (MongoDB, Express, React, Node.js), Docker, Grafana, Prometheus, Redis, Redux, Git.
• Product Thinking: Software Architecture, Application Logic, Scalability, SEO Optimization.
• Software Architecture: Experience designing software environment structure for a personal project.

Professional Experience:

UX/UI Designer | World Trade Partners | Tallinn | 2022–2024

• Designed logic, information architecture, and user interfaces for IT products, including CRM systems and large-scale B2C/B2B platforms.
• Developed full design cycles: from research and wireframes to interactive Figma prototypes and final UI mockups.
• Created and maintained design systems to ensure consistency and accelerate development.
• Collaborated closely with developers, leveraging HTML/CSS and MERN stack knowledge to find optimal solutions and understand technical implementation.
• Contributed to UX/UI design for FlowStamp, a high-load construction project targeting an audience of 1 million users.

Achievements / Key Projects:

• CRM System Jobbible: Built from scratch with design in Figma, PHP-based frontend/backend, and SQL database. Developed as a high-load application supporting 500k+ users. Designed interfaces featuring: Complex data tables, Advanced data visualizations, Interactive dashboards, Survey/questionnaire systems, Request forms, End-to-end ticket lifecycle management (New → Finish status workflow).
• FlowStamp (UX/UI): Key contributor to user experience and interface design for a scalable construction platform.
• Mailsball (Pet Project): Full-cycle development and launch: from ideation and UX/UI design (Figma) to frontend implementation (HTML, CSS, JS, React), backend setup (Node.js, Express, MongoDB), email handling (Postfix), caching (Redis), state management (Redux), and monitoring integration (Docker, Grafana, Prometheus), version control (Git), and SEO best practices.