Senior Design Engineer – React/TypeScript

Experis; Polska; Hybrid; PLN 120,000 - 180,000; Full time

Job summary

Experis seeks a Senior Design/Developer to act as the design and front-end technical lead in a hybrid role. You will own the UX-to-prototype pipeline and lead the mid-level frontend team to deliver accessible, enterprise-grade portal experiences.

You will translate ambiguous business needs into validated designs, define UI/UX standards, and govern the design system while collaborating with backend teams to ensure feasible, scalable solutions.

Qualifications

• Must translate business requirements into validated, high-fidelity prototypes.
• Lead development with React/TypeScript and enforce UI/UX standards.
• Experience building design systems and shared component libraries.

Responsibilities

• Own requirements-to-prototype pipeline with stakeholders.
• Define and enforce UI/UX standards and design system usage.
• Architect and build React/TypeScript front-end components and libraries.
• Review pull requests and provide design and code feedback to developers.
• Collaborate with backend/API teams to ensure feasibility.
• Drive accessibility compliance (WCAG 2.1 AA) and responsive design.
• Conduct usability testing and iterate designs based on feedback.
• Mentor mid-level UI/UX developers on design thinking and React practices.
• Participate in governance reviews as design owner for the portal.

Skills

React.js

TypeScript

Design systems

Figma

Accessibility WCAG

UI/UX standards

Architecture & components

Code review

Mentoring

Stakeholder mgmt

Tools

Docker

Kubernetes

OpenShift

Job description

We are seeking a Senior Design/Developer to act as the design and front-end technical lead.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.

Key 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 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.

Required Skills

• Expert-level proficiency in design/prototyping tools (e.g., Figma), including component libraries and design systems.
• Strong hands‑on (14 yrs) 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.

Nice-to-Have

• 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.