Staff Software Engineer

Job Overview

We are seeking a Staff Frontend Engineer to join the Engineering Platform team at Relativity. This role is ideal for a deeply technical frontend leader who thrives on solving architectural challenges, driving frontend innovation at scale, and influencing engineering best practices across product teams.As a Staff Engineer, you will play a key role in defining and evolving our frontend architecture, shaping our Micro Frontend strategy, and enabling consistency, reusability, and scalability through platform-owned UI frameworks and shared infrastructure. Your impact will span teams, and you’ll collaborate with architecture, UX, product, and backend leads to align initiatives to both developer and business needs.This is a high-impact role for someone who combines expert frontend engineering capabilities with strategic thinking and mentorship in a fast-paced, cloud-native environment.

Job Description and Requirements

Key Responsibilities

• Architect, design, and implement scalable, performant frontend infrastructure and shared UI components using React, TypeScript, and PrimeReact.

• Lead the definition and adoption of Micro Frontend architecture to support modular, independently deployable UI features across product teams.

• Drive consistency and accessibility by contributing to and governing the evolution of the company-wide design system and component libraries.

• Optimize performance through lazy loading, code splitting, caching, CDN strategies, and advanced rendering techniques.

• Collaborate cross-functionally with UX, backend, DevOps, and platform teams to build cohesive, seamless user experiences and shared workflows.

• Establish and enforce frontend best practices including testing, observability, accessibility (WCAG), and maintainability.

• Mentor engineers across teams, contribute to architecture reviews, and champion technical excellence across the frontend discipline.

• Support innovation by exploring AI-enhanced UI/UX capabilities, including intelligent behaviors, personalization, and generative interfaces.

• Influence long-term technical strategy and guide key architectural decisions with platform-wide impact.

Required Skills and Experience

• 8+ years of professional experience in frontend development, with a proven track record of leading complex architectural efforts.

• Deep expertise in JavaScript (ES6+), TypeScript, and modern frontend frameworks, especially React (including hooks, context, performance optimization).

• Strong knowledge of HTML5, modern CSS methodologies (e.g., BEM, CSS-in-JS), and preprocessors like SASS/LESS.

• In-depth experience with state management (e.g., Redux, Recoil, Zustand) and building modular, component-based architectures.

• Proven experience in Micro Frontend design, component federation, and integration patterns at scale.

• Proficiency with RESTful APIs, GraphQL, async/await, Promises, and mock-based development.

• Strong testing mindset and hands-on experience with unit, integration, and end-to-end testing frameworks such as Jest, Cypress, and Playwright.

• Strong background in performance optimization, frontend caching strategies, asset delivery via CDN, and responsive design.

• Deep understanding of web accessibility (WCAG) standards and techniques to ensure inclusive UI.

• Familiarity with CI/CD practices, component versioning, and automated testing in a modern DevOps environment.

Desirable Skills and Experience

• Experience delivering production SaaS solutions on Azure or other cloud platforms.

• Familiarity with AI-enhanced UIs, such as chatbots, recommendation engines, or adaptive layouts.

• Background working with backend technologies (.NET, Node.js, Python) for cross-functional alignment.

• Experience with Linux environments, containerization (Docker, Kubernetes), and microservices integration.

• Understanding of NoSQL technologies (MongoDB, Redis, Elasticsearch) and real-time data streams.

• Strong UI/UX sensibility and ability to bridge technical execution with design intent.

• Experience with AI/ML-powered frontend capabilities such as generative layouts, NLP-assisted interactions, or vision-based UI augmentation.

Why Join Us?

• Define and drive the frontend architecture and UI infrastructure strategy across Relativity’s platform.

• Operate at the intersection of technology leadership and engineering impact, with scope across teams and domains.

• Work in a high-trust, action-oriented environment with autonomy, purpose, and room for deep technical exploration.

• Collaborate with product and platform leaders to deliver modern, intelligent, and inclusive user experiences at scale.

• Join a stable, cloud-native organization investing heavily in platform engineering and AI-enabled future-state architectures.

Relativity is a diverse workplace with different skills and life experiences—and we love and celebrate those differences. We believe that employees are happiest when they're empowered to be their full, authentic selves, regardless of how you identify. 

Benefit Highlights: 

• Comprehensive health, dental, and vision plans 

• Parental leave for primary and secondary caregivers 

• Flexible work arrangements 

• Two, week-long company breaks per year 

• Unlimited time off 

• Long-term incentive program 

• Training investment program 

Relativity is committed to competitive, fair, and equitable compensation practices.

This position is eligible for total compensation which includes a competitive base salary, an annual performance bonus, and long-term incentives.

The expected salary range for this role is between following values:

300 000 and 450 000PLN

The final offered salary will be based on several factors, including but not limited to the candidate's depth of experience, skill set, qualifications, and internal pay equity. Hiring at the top end of the range would not be typical, to allow for future meaningful salary growth in this position.