Senior Design Developer / Lead UI/UX Developer

Senior Design Developer / Lead UI/UX Developer

Miejsce pracy: Warszawa

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.

Technologies we use

Expected

• React.js
• 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

Our requirements

• 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 React.js + 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.

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