Senior Design/Developer

October 8, 2026

Hybrid

Senior

Warsaw, Poland

Worth knowing

English is required

Description

A Senior Design/Developer is needed to act as design and front-end technical lead for client-facing portals. The hybrid role combines UX ownership — requirements-to-prototype and design system governance — with senior hands-on React/TypeScript engineering leadership. The candidate leads and codes alongside a mid-level team to deliver pixel-accurate, accessible, enterprise-grade portal experiences.

Responsibilities

Own the requirements-to-prototype pipeline: run discovery with stakeholders, produce wireframes, interactive prototypes, and high-fidelity designs
Define and enforce UI/UX standards, interaction patterns, and design system usage across all portal applications
Architect and build key React/TypeScript front-end components and shared UI libraries, setting technical and design precedent
Review pull requests and provide constructive, actionable feedback to mid-level developers on 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 and validation sessions, iterating designs based on user feedback and analytics
Mentor mid-level UI/UX developers on design thinking and React best practices
Participate in architecture/design governance reviews as design owner for the portal

Requirements

Expert-level proficiency in design/prototyping tools such as Figma, including component libraries and design systems
Strong hands-on React.js and TypeScript development: 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 — 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, Micro Frontend architectures (Module Federation, single-spa), basic SQL knowledge, prior experience in financial services or fund administration platforms

Conditions

Contract stability
High level of autonomy and independence
Senior role acting as Senior Design/Developer
Participation in key projects
International collaboration across various business regions
Hybrid work format

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