Senior UX / UI Developer

Senior UI/UX Developer (Poland/Hungary)

Company overview

Our client is a fast-growing business advisory and technology firm working at the intersection of Artificial Intelligence, data science, and digital transformation. They partner with global enterprise clients—especially in life sciences—to deliver AI-driven solutions that improve commercial operations, accelerate insight generation, and strengthen decision-making.

With established delivery centers across multiple international locations and a growing European presence, they are expanding their team in Poland to support the scale-up of AI-powered platforms and digital products.

Role overview

They are hiring a Senior UI/UX Developer to lead end-to-end user experience work—spanning research, interaction design, and high-fidelity UI execution—for complex, data-driven enterprise applications. You will shape how users navigate dashboards, analytics tools, and workflow-heavy products, ensuring experiences are intuitive, accessible, consistent, and aligned with product and business goals.

This role requires strong UX judgment, practical design-system thinking, and the ability to work closely with product, engineering, and data teams to deliver designs that can be implemented cleanly and accurately.

Location: Remote, but based in Poland or Hungary

Team: Cross-functional collaboration with product, engineering, and data teams across multiple geographies.

Key responsibilities

UX & interaction design

Lead UX research activities (user interviews, usability testing, persona development, journey mapping).

Translate business and analytical requirements into clear user flows, information architecture, and interaction models.

Design wireframes, prototypes, and high-fidelity mockups aligned with product strategy and user needs.

Ensure consistency and usability across product touchpoints and workflows.

UI design & design systems

Create high-quality UI designs aligned with brand and enterprise standards.

Build and maintain scalable design systems, component libraries, and documentation (tokens, patterns, style guides).

Ensure responsive design across devices and adherence to accessibility standards (WCAG).

Partner with frontend engineers to ensure accurate, implementation-ready design specs.

Collaboration & implementation support

Work closely with Product Managers, Frontend Developers, Data/Analytics teams, and business stakeholders.

Participate in sprint ceremonies (planning, refinement, retrospectives) and design reviews.

Support implementation through clear handoff artifacts and ongoing collaboration (specs, annotations, acceptance criteria).

Improve design-to-development workflows and consistency across releases.

Usability, quality & continuous improvement

Conduct usability testing and analyze qualitative and quantitative feedback to iteratively improve the experience.

Advocate for user-centered decisions using evidence, data, and clear rationale.

Review and refine existing interfaces for usability, performance perception, and accessibility.

Stay current on UI/UX tools, patterns, and best practices, applying what’s useful—not what’s trendy.

Qualifications & experience

6–10 years of experience in UI/UX design (and close collaboration with development) for web or enterprise products.

Strong portfolio demonstrating end-to-end UX process and high-quality UI outcomes.

Proficiency with tools such as Figma (preferred), Sketch, Adobe XD, or similar.

Solid grounding in UX research methods, interaction design, and information architecture.

Experience with complex, data-intensive products (dashboards/analytics/workflows) is a strong advantage.

Working knowledge of frontend fundamentals (HTML, CSS, basic JavaScript) to collaborate effectively with engineering.

Experience in Agile / Scrum environments.

Bachelor’s degree in Design, HCI, Computer Science, or a related field is preferred.

Key skills & attributes

User-centric mindset: Strong empathy and focus on clarity, usability, and adoption.

Design excellence: Balances clean aesthetics with enterprise functionality and constraints.

Systems thinking: Builds scalable patterns and reusable components.

Collaboration: Communicates clearly across technical and non-technical teams.

Attention to detail: Consistency, accessibility, and quality are non-negotiable.

Problem-solving: Turns complexity into simple, usable experiences.

Ownership: Takes responsibility for UX quality from discovery to release.

Adaptability: Comfortable in fast-moving, evolving product and consulting environments.

What they offer

Work on enterprise-scale AI, analytics, and GenAI-driven platforms.

Exposure to international clients and highly complex product environments.

A collaborative, delivery-focused culture with strong ownership.

Growth path into UX leadership, design management, or senior product design roles.

Competitive compensation with performance incentives and learning support.