Remote Senior Frontend Architect for AI Platform

Relativity; Łódź; On-site; PLN 208,000 - 312,000; Full time

Benefits offered by this job

DTO

Parental leave

Equity program

Job summary

Relativity is seeking a Senior Frontend Engineer to join the aiR Assist Platform team. You will shape the frontend architecture behind Relativity’s AI products by building reusable UI infrastructure, enabling composable micro-frontend delivery, and creating a seamless developer experience for teams on the platform.

The role focuses on reusable building blocks, clean module boundaries, and long-term architectural excellence, with collaboration across UX, product, and backend teams to deliver

Qualifications

• 4–6+ years of professional frontend development experience building large-scale web applications or enterprise platforms.
• Advanced proficiency in JavaScript (ES6+), TypeScript, and the modern React ecosystem, including hooks and concurrent patterns.
• Demonstrated platform mindset with experience designing reusable UI infrastructure, shared libraries, and maintainable abstractions.
• Strong experience with modular architecture, code-splitting, lazy loading, and micro-frontend concepts such as module federation, web-component composition, or similar approaches.

Responsibilities

• Design and implement scalable, performant frontend infrastructure using React 19, TypeScript, PrimeReact, and Relativity’s internal design systems.
• Advance the organization’s micro-frontend strategy through web-component-based application delivery and frontend composition across Relativity tenants.
• Evolve shared context registry and postMessage-based communication mechanisms that enable AI context sharing across chat experiences.
• Drive frontend modularization through clean module boundaries, shared libraries, code-splitting, and Nx monorepo best practices.
• Build responsive, accessible, and cross-platform user interfaces with strong adherence to responsive web design principles and WCAG accessibility standards.
• Partner with UX, product management, and backend engineering teams to deliver consistent user experiences integrated with generated OpenAPI clients and AI services.
• Define and promote engineering standards for testing, accessibility, performance, maintainability, and frontend quality.
• Own comprehensive automated testing practices using Vitest, Playwright, visual regression testing, and Storybook-driven component development.
• Improve frontend CI/CD processes through progressive CDN delivery, automated quality gates, conventional commit versioning, and component lifecycle management.
• Mentor engineers and provide technical leadership across frontend platform initiatives.
• Explore and integrate AI-driven enhancements into internal tools and platform experiences.

Skills

JavaScript

TypeScript

React

Web components

Frontend architecture

Accessibility

REST/GraphQL

Testing

Tools

Nx

Vite

Webpack

Storybook

OpenAPI

Job description

Relativity is seeking a Senior Frontend Engineer to join the aiR Assist Platform team. You will shape the frontend architecture behind Relativity’s AI products by building reusable UI infrastructure, enabling composable micro-frontend delivery, and creating a seamless developer experience for teams on the platform.

The role focuses on reusable building blocks, clean module boundaries, and long-term architectural excellence, with collaboration across UX, product, and backend teams to deliver