Ilya Yarmak, Developer in Poznań, Poland
Ilya is available for hire
Hire Ilya

Ilya Yarmak

Verified Expert  in Engineering

Bio

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

Roley AI
React, Next.js, Tailwind CSS, Shadcn, Firebase, Supabase, Node.js, TypeScript...
Freelance
React, TypeScript, Next.js, Tailwind CSS, SCSS, Bootstrap, Emotion, JavaScript...
Storm Ideas
React, Next.js, TypeScript, JavaScript, Tailwind CSS, SCSS, GraphQL, Shadcn...

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

Availability

Full-time

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

2024 - PRESENT
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.
Technologies: React, Next.js, Tailwind CSS, Shadcn, Firebase, Supabase, Node.js, TypeScript, JavaScript, Cursor AI, OpenAI API, Deepgram, Groq, Front-end, CSS3, HTML5, CSS, HTML, Express.js, JSON, UX Design, Claude, Full-stack Development

Front-end Developer

2020 - PRESENT
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.
Technologies: React, TypeScript, Next.js, Tailwind CSS, SCSS, Bootstrap, Emotion, JavaScript, Front-end, CSS3, HTML5, CSS, HTML, Express.js, JSON, UX Design, Material UI

Front-end Developer

2022 - 2024
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.
Technologies: React, Next.js, TypeScript, JavaScript, Tailwind CSS, SCSS, GraphQL, Shadcn, CI/CD Pipelines, Front-end, CSS3, HTML5, Node.js, Redux, CSS, HTML, Express.js, JSON, UX Design

Front-end Developer

2021 - 2022
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.
Technologies: React, TypeScript, SCSS, Bootstrap, Front-end, CSS3, HTML5, CSS, HTML, JSON, UX Design

Experience

SiriusXM Blog

https://www.siriusxm.com/blog/
A top audio entertainment provider in North America. I migrated their legacy WordPress blog to a modern, high-performance application built from scratch using Next.js, React, TypeScript, and Tailwind CSS. Also, I completely redesigned it, which significantly enhanced performance, accessibility, and user engagement across the platform.

Hallmark Channel's Seasonal Apps

A leading entertainment network, reaching millions of viewers with its beloved family-friendly programming, particularly famous for its widely popular holiday movies.

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

A sales training platform that helps solar companies train their teams using AI-powered voice agents. I led the full-stack development of the app using React, Next.js, TypeScript, Node.js, and Tailwind CSS. The platform allows sales reps to practice real-life call scenarios with AI agents acting as homeowners, upload and analyze real customer calls, and track performance through intelligent dashboards. My work directly contributed to improving training efficiency, enhancing UX, and increasing the overall effectiveness of solar sales teams.

Education

2019 - 2023

Bachelor's Degree in Computer Science

Poznan University of Technology - Poznan, Poland

Skills

Libraries/APIs

React, React Query, OpenAI API, Node.js, Emotion, Twilio API

Tools

Firebase Authentication, Git, Figma to HTML, Claude, Slack, Figma, Jira, Asana, Trello, Notion, Atlassian, Shadcn

Languages

TypeScript, JavaScript, SCSS, CSS3, HTML5, CSS, HTML, GraphQL

Frameworks

Tailwind CSS, Next.js, Redux, Material UI, MUI CSS, Bootstrap, Express.js

Paradigms

UX Design

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, Front-end, Full-stack Development, Styled-components, Supabase, CI/CD Pipelines, Deepgram, Groq, ElevenLabs Solutions, WebSockets

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