Senior Frontend Engineer - AI-Driven Web Platform

Box; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Job summary

Box Poland is seeking a senior frontend engineer to help build and modernize Box's core web platform used by millions of users. You will work on highly visible surfaces, drive performance improvements, and help teams ship smaller, safer changes more frequently.

You’ll use React and TypeScript, participate in Module Federation migrations, and apply automated testing with Playwright. Expect on-call rotation and collaboration with a global engineering community to deliver AI-enhanced experiences.

Qualifications

• 6+ years of professional software development experience.

Responsibilities

• Develop high-quality, scalable, and responsive frontend experiences.
• Build and modernize key end-user surfaces such as homepage, navigation, collections, uploads manager, content metadata, and search.
• Improve application performance and delivery health by monitoring and optimizing Apdex, page load times, rollout health, build times, deployment frequency, change failure rate, and other engineering and user experience metrics.
• Improve CI/CD pipelines, automated quality gates, release processes, and observability so the team can ship smaller, safer changes more frequently.
• Leverage AI tools (e.g., Claude Code, Cursor) to accelerate development, research, documentation, and bug triage.
• Help evolve our main web application from a monolithic into a modular architecture using Federated Modules / Module Federation.
• Replace manual QA processes with reliable automated test coverage using tools such as Playwright and related frontend testing frameworks.
• Contribute to defining and implementing engineering standards across product teams.
• Represent and advocate for Box Poland’s engineering excellence both internally and externally.
• Participate in our on-call rotation, available at all times while on-call to help respond to and triage any issues that arise.

Skills

JavaScript/TypeScript

React

HTML/CSS

CI/CD

Module Federation

Playwright

React Testing Library

WDIO

English

Ownership mentality

Tools

Playwright

Jenkins

Module Federation

Cursor IDE

Claude Code

React Testing Library

WDIO

Job description

Box Poland is seeking a senior frontend engineer to help build and modernize Box's core web platform used by millions of users. You will work on highly visible surfaces, drive performance improvements, and help teams ship smaller, safer changes more frequently.

You’ll use React and TypeScript, participate in Module Federation migrations, and apply automated testing with Playwright. Expect on-call rotation and collaboration with a global engineering community to deliver AI-enhanced experiences.