Senior Design/Developer (React & UI/UX)

More about usBillennium 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 RoleWe are looking for an experienced Senior Design/Developer (React & UI/UX) who will join a project for our client from the financial services sector. This role combines UX leadership, design system ownership, and hands-on front-end engineering. You will work closely with business stakeholders, designers, and developers to create enterprise-grade portal experiences that are intuitive, accessible, and scalable.

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

What you will doLead the end-to-end UX process, from requirements gathering and discovery workshops to wireframes, prototypes, and high-fidelity designs.

Define and govern UI/UX standards, design systems, and interaction patterns across portal applications.

Architect and develop reusable React.js and TypeScript components while setting technical direction for the front-end team.

Mentor developers through code reviews, design feedback, and best-practice guidance in UI/UX and React development.

Drive accessibility, usability testing, and continuous improvements based on user feedback and business needs.

What we are looking for14+ years of software or product design experience, including 8+ years of hands-on React.js and TypeScript development.

Expert-level proficiency with Figma and extensive experience building and maintaining design systems and component libraries.

Strong experience translating business requirements into responsive, accessible, production-ready user interfaces.

Hands-on knowledge of modern front-end architecture, CI/CD pipelines, and containerized environments (Docker, Kubernetes, OpenShift).

Excellent stakeholder management, communication, and leadership skills, with experience mentoring teams and reviewing code.

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 processHR call

• Interview with the dedicated Client
• Final decision / Feedback
• Sounds interesting? Click '

Apply' and have a chance to hear more! 🚀