UI/UX Developer (React)

Billennium; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Udemy for Business

Private medical care

Multisport card

Veterinary package

Language lessons

Shopping vouchers

Flexible hours

Remote/Hybrid options

Career growth

Global collaboration

Team events

Job summary

Billennium is seeking an experienced UI/UX Developer (React) to join a financial services project in Warsaw. You will develop modern, scalable client-facing portals, collaborating with design and engineering teams to deliver intuitive user experiences.

The role is hybrid—3 days a week from the Client's office in Warsaw—with a focus on high-performance front-end development and a strong emphasis on design-system alignment and accessibility.

Qualifications

• 8+ years in software development with 6+ years in React.js and TypeScript.
• Strong front-end architecture, state management (Redux/Context API).
• Experience with Figma and implementing pixel-perfect UI.
• Experience integrating front-end with REST/GraphQL APIs.
• Familiarity with CI/CD, containers, and WCAG accessibility.

Responsibilities

• Develop and maintain responsive front-end applications using React.js and TypeScript.
• Build reusable UI components and contribute to design system libraries.
• Collaborate with designers and backend engineers for pixel-perfect solutions.
• Integrate front-end applications with REST APIs and microservices architecture.

Skills

React.js

TypeScript

Redux

Context API

Figma

REST API

GraphQL

CI/CD

WCAG

Job description

Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together!

About the Role

We are looking for an experienced UI/UX Developer (React) who will join a project for our client from the financial services sector. In this role, you will contribute to the development of modern, scalable client-facing portals, working closely with design and engineering teams to deliver intuitive, high-performance user experiences.

The role is hybrid - 3 days a week from the Client's office in Warsaw.

What you will do

• Develop and maintain responsive front-end applications using React.js, TypeScript, and modern web technologies.
• Build reusable UI components and contribute to shared component libraries aligned with established design systems.
• Collaborate with designers and backend engineers to deliver pixel-perfect, user-friendly solutions.
• Integrate front-end applications with REST APIs and microservices architecture.

What we are looking for

• 8+ years of software development experience, including 6+ years working with React.js and TypeScript.
• Strong understanding of modern front-end architecture, state management (Redux, Context API), and component-based design.
• Experience working with design tools such as Figma and implementing UI designs with high accuracy.
• Hands-on experience integrating front-end applications with REST or GraphQL APIs.
• Familiarity with CI/CD pipelines, containerized environments, and web accessibility standards (WCAG).

Perks and benefits (our offer)

• Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers.
• Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location.
• Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more.
• Global collaboration - work with a diverse, international team.
• Innovative environment - be part of a forward-thinking and growth-oriented workplace.
• Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work.
• Team-building events including our company tradition (annual company event in Mazury).
• A pleasant surprise to start your journey with us in the form of a welcome pack.

Recruitment process

• HR call
• Interview with the dedicated Client