Senior Design Developer / Lead UI/UX Developer w Warszawa, Polska

Recruitment for, We're recruiting for a global company from banking sector., , We are seeking a Senior Design Developer to act as the design and front-end technical lead for client facing Portals., , This is a hybrid role combining UX ownership (requirements-to-prototype, design system governance) with hands-on senior front-end engineering leadership., , The ideal candidate translates ambiguous business requirements into validated, high-fidelity prototypes, then leads (and codes alongside) the mid-level development team to deliver pixel-accurate, accessible, enterprise-grade portal experiences.

Expected, https://jobeax.com/link/6WcBICn0LM558SP0, TypeScript, Docker, Kubernetes, OpenShift

Optional, SQL

About the project, The project focuses on the design and development of client-facing portals within a global banking environment.

Your responsibilities, Own the requirements-to-prototype pipeline: run discovery with business/product stakeholders, produce wireframes, interactive prototypes, and high-fidelity designs, Define and enforce UI/UX standards, interaction patterns, and design system usage across all TA Portal applications, Architect and build key React/TypeScript front-end components and shared UI libraries, setting technical and design precedent for the team, Review pull requests and provide constructive, actionable feedback to mid-level developers on both design fidelity and code quality, Partner with backend/API teams to ensure front-end designs are technically feasible within service and data constraints, Drive accessibility compliance (WCAG 2.1 AA) and responsive design across all portal screens, Conduct usability testing/validation sessions and iterate designs based on user feedback and analytics, Mentor mid-level UI/UX developers on both design thinking and React best practices, Participate in architecture/design governance reviews as design owner for the portal

At least 8+ years hands-on React/TypeScript development and a strong UI/UX design portfolio, Expert-level proficiency in design/prototyping tools (e.g., Figma), including component libraries and design systems, Strong hands-on https://jobeax.com/link/6WcBICn0LM558SP0 + TypeScript development experience (component architecture, state management, hooks), Demonstrated experience translating designs into production-quality, responsive, accessible UI, Familiarity with containerized application environments (Docker/Kubernetes/OpenShift) and modern CI/CD pipelines, Strong stakeholder management - comfortable defending design decisions to both business and engineering audiences, Experience reviewing code and providing technical/design feedback within a team setting

Optional, Working knowledge of Java or .NET (for backend collaboration/awareness — not a core build requirement), Experience with Micro Frontend architectures (Module Federation, single-spa)., Basic SQL/database knowledge, Prior experience in financial services, fund administration, or transfer agency platforms

Adecco Poland Sp. z o.o., The world's leading workforce solutions company, offering temporary staffing, permanent placement and outsourcing across all sectors.