Senior React Developer (with Node)

Senior React Developer (with Node)

JavaScript

Złota 59, Warszawa

ITDS

23 000 - 28 000 PLN
Net per month - B2B
Full-time
B2B
Senior
Hybrid

Tech stack

    React

    advanced

    TypeScript

    advanced

    Bazel

    regular

    Node.js

    regular

    CSS-in-JS

    regular

    SSR

    regular

    PWA

    regular

    Accessibility (WCAG)

    nice to have

Job description

Localization: Warsaw, city center, hybrid 3 days x week


As a Senior React Developer, you will be working for our client, a leading global financial institution supporting diverse business units with scalable, modern digital interfaces. You will be part of a dedicated UI Libraries team, responsible for driving the adoption of cutting-edge UI technologies and shaping the firm's design system. Your work will directly influence the visual consistency and usability of hundreds of internal and external applications across multiple platforms, ensuring a cohesive and accessible user experience. 


Your main responsibilities:

  • Develop and maintain reusable components for a cross-platform UI library
  • Collaborate with design and engineering teams to improve the visual language and design system
  • Evaluate and introduce new UI technologies to enhance development workflows
  • Ensure high accessibility standards (WCAG) across all frontend components
  • Support internal teams in implementing consistent UX across web and mobile platforms
  • Participate in code reviews and advocate for best coding practices and testing strategies
  • Troubleshoot UI-related issues across applications and suggest long-term solutions
  • Lead integration efforts with SSR frameworks like NextJS or Gatsby
  • Optimize performance and responsiveness of user-facing features
  • Contribute to technical documentation for shared frontend libraries


You're ideal for this role if you have:

  • 5+ years of hands-on experience with some of the latest technologies to build rich web applications
  • Strong hands-on experience with modern front-end technologies such as React (mandatory), Angular, Typescript, and comfortable learning new languages
  • Experience with clean code and testing methodologies
  • Superior interpersonal, communication and organization skills
  • Ability to work on multiple project simultaneously in a fast-paced, collaborative environment
  • Self-motivated and self-managed with a high degree of analytical ability, innovation and intellectual curiosity


Nice to have:

  • Bachelor's degree in Computer Science
  • Experience working in delivery driven agile SDLC covering research, design and engineering
  • Hands-on experience with PWAs, CSS-in-JS, mobile app development, accessible components and websites
  • Experience with SSR frameworks, such as NextJS or Gatsby
  • Experience with front-end build tools and testing libraries including Webpack


Published: 05.08.2025
Office location
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