Senior Frontend Engineer (React/TypeScript)

Box; Warszawa; On-site; PLN 240,000 - 360,000; Full time

Job summary

Box Poland is seeking a senior frontend engineer to shape and modernize our core web platform used by customers globally. You will build scalable React/TypeScript UIs, contribute to AI-enabled product experiences, and help evolve a monolithic frontend into a modular Federated Modules architecture.

You will optimize performance, collaborate on CI/CD improvements, automated testing, and release processes while participating in on-call rotations and shaping engineering standards across product

Qualifications

• 6+ years of professional software development experience.
• Deep expertise in JavaScript/TypeScript with React.
• Experience building large-scale frontend applications.

Responsibilities

• Develop high-quality frontend experiences using modern technologies.
• Modernize key surfaces like homepage, navigation, uploads manager, and search.
• Improve CI/CD pipelines, quality gates, and observability.

Skills

JavaScript/TypeScript

React

CI/CD

Module Federation

Playwright

Front-end performance

Tools

Jenkins

Playwright

React Testing Library

Job description

Box Poland is seeking a senior frontend engineer to shape and modernize our core web platform used by customers globally. You will build scalable React/TypeScript UIs, contribute to AI-enabled product experiences, and help evolve a monolithic frontend into a modular Federated Modules architecture.

You will optimize performance, collaborate on CI/CD improvements, automated testing, and release processes while participating in on-call rotations and shaping engineering standards across product