Ilya Yarmak
Verified Expert in Engineering
Full-stack Developer
Poznań, Poland
Toptal member since April 17, 2025
Ilya is a senior front-end and full-stack developer with 4+ years of experience building highly polished, scalable web applications using React, Next.js, TypeScript, Tailwind CSS, and Node.js. He excels at transforming complex designs into user-centric, high-performance solutions that deliver exceptional UX and drive business impact. Ilya will be a great addition to any team.
Portfolio
Experience
- Next.js - 4 years
- React - 4 years
- TypeScript - 4 years
- Tailwind CSS - 4 years
- User Experience (UX) - 4 years
- React Query - 2 years
- Cursor AI - 1 year
- Zustand - 1 year
Preferred Environment
MacOS, Cursor AI, Visual Studio Code (VS Code), Slack, Figma, Jira, Asana, Trello, Notion, Atlassian
The most amazing...
...thing I've built was the redesign of the Hallmark Channel's seasonal apps, which significantly improved UX and performance and enabled 100% on-time launches.
Work Experience
Senior Front-end/Full-stack Developer
Roley AI
- Architected scalable front-end infrastructure with React and Next.js for an early-stage startup.
- Contributed to a 30% increase in our client's revenue by building AI-driven call analysis tools, gamified AI sales training agents, and performance-optimization dashboards.
- Mentored a founder in modern front-end practices, enhancing code maintainability and scalability by 40%.
- Owned UI/UX and tech choices independently.
- Developed back-end APIs with Node.js, TypeScript, and Next.js.
Front-end Developer
Freelance
- Delivered high-quality UIs for StanfordTax, Raisely, and APE-X using React, Next.js, Tailwind/SCSS, and TypeScript.
- Collaborated with founders and cross-functional stakeholders to own and deliver end-to-end features, clearly communicating technical decisions and aligning solutions with product goals.
- Built complex, responsive, cross-browser compatible multi-step forms and real-time dashboards.
- Translated Figma designs into pixel-perfect components.
Front-end Developer
Storm Ideas
- Developed front-end solutions with 150,000+ monthly users for major US TV brands like SiriusXM, Hallmark Channel, Disney, Warner Records, and Wizarding World in agile, fast-paced teams.
- Optimized and rebuilt Hallmark Channel's seasonal apps with Next.js, cutting load times by 40% and achieving 100% on-time launches.
- Modernized SiriusXM's blog with Next.js, increasing user engagement by 25% through enhanced design, performance, and accessibility (WCAG 2).
- Engineered responsive, cross-browser UIs, ensuring accessibility, scalability, and seamless UX for high-traffic client apps.
Front-end Developer
Revpanda
- Launched 15+ responsive iGaming websites by transforming Figma designs into pixel-perfect, cross-browser compatible UIs.
- Ensured fast delivery under tight deadlines in a high-paced environment while maintaining high design and code quality.
- Collaborated remotely with designers and project managers to deliver visually polished, mobile-first websites using React, TypeScript, SCSS, and Bootstrap.
Experience
SiriusXM Blog
https://www.siriusxm.com/blog/Hallmark Channel's Seasonal Apps
I rebuilt their seasonal apps from the ground up using Next.js, React, and Tailwind CSS, significantly improving performance, maintainability, and user experience. This overhaul reduced load times by 40% and enabled the team to consistently hit 100% of launch deadlines for the first time.
Roley AI
Education
Bachelor's Degree in Computer Science
Poznan University of Technology - Poznan, Poland
Skills
Libraries/APIs
React, React Query, OpenAI API, JSON API, REST APIs, Node.js, Emotion, Twilio API
Tools
Firebase Authentication, Git, Figma to HTML, Shadcn, Claude, Slack, Figma, Jira, Asana, Trello, Notion, Atlassian
Languages
TypeScript, JavaScript, SCSS, CSS3, HTML5, CSS, HTML, GraphQL
Frameworks
Tailwind CSS, Next.js, Redux, Express.js, Material UI, MUI CSS, Bootstrap
Paradigms
UX Design, Real-time Systems
Platforms
Firebase, Vercel, MacOS, Visual Studio Code (VS Code)
Storage
JSON
Other
Computer Science, Software Engineering, Information Technology, Web Development, User Experience (UX), Cursor AI, Zustand, Figma to React, WebSockets, Front-end, Full-stack Development, User Interface (UI), Styled-components, Supabase, CI/CD Pipelines, Deepgram, Groq, ElevenLabs Solutions
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