Senior Software Engineer (Frontend) - Platform & Developer Experience at Datadog

Datadog

Madrid, Spain; Paris, France·1w ago

SeniorFull-timeJavaScriptTypeScriptJavaReactCI/CDGitAI

Salary Range

$79,560 - $107,640 /year

Estimated

This salary is estimated based on similar roles. The actual salary may vary.

About the Role

We are looking for a Frontend Engineer to join Datadog’s Platform & Developer Experience teams. You’ll design and maintain shared UI libraries, build pipelines, design systems, and developer tooling that hundreds of engineers rely on daily. Your work will improve reliability, performance, and engineering velocity at scale.

Key Responsibilities

→Design and implement core frontend platform components including shared UI libraries, build systems, and performance tooling
→Develop and maintain internal developer tools that accelerate engineering workflows and promote consistency
→Lead architectural decisions for frontend infrastructure with a focus on scalability and developer experience
→Establish and promote best practices for testing, accessibility, performance, and frontend standards
→Build CI/CD tooling, local development environments, and automation that support fast and reliable code delivery
→Mentor engineers and serve as a technical leader for frontend tooling and platform design

Requirements

✓6+ years of experience building large-scale frontend systems, ideally in platform or developer experience roles
✓Expertise in JavaScript/TypeScript and modern frontend frameworks such as React
✓Deep experience with modern frontend build tools, bundlers (e.g., Rspack, esbuild, Lage), and CI/CD workflows
✓Experience building internal tools, component libraries, or design systems for large engineering organizations
✓Ability to lead cross-team initiatives and influence adoption of platform standards
✓Focus on reliability, performance, and enabling efficient developer workflows via thoughtful developer experience