Senior Software Engineer (Frontend) - Platform & Developer Experience

Datadog,; Paris; Hybride; EUR 70 000 - 90 000; Plein temps

Résumé du poste

A leading SaaS company is seeking a Senior Frontend Engineer in Paris to design and implement robust UI libraries and performance tooling. You will collaborate across teams to enhance developer workflows and maintain shared systems. This position demands over 6 years of experience in JavaScript and experience with modern frameworks like React. The company fosters a hybrid work environment to promote work-life harmony and professional growth.

Prestations

Generous benefits package

Employee stock purchase plan

Continuous career development

Qualifications

• 6+ years of experience building large-scale frontend systems.
• Expert in JavaScript/TypeScript and modern frontend frameworks.
• Deep experience with modern frontend build tools and CI/CD workflows.

Responsabilités

• Design and implement core frontend platform components.
• Develop and maintain internal developer tools.
• Lead architectural decisions with a focus on scalability.

Connaissances

JavaScript

TypeScript

React

CI/CD workflows

Accessibility

Outils

Rspack

esbuild

Lage

Description du poste

Datadog’s Platform & Developer Experience teams build the foundational tools and systems that support every part of our product. As a Senior Frontend Engineer, you’ll design and maintain shared UI libraries, build pipelines, design systems, and developer tooling that hundreds of engineers rely on daily. You’ll work closely with frontend engineers across the company to understand their day-to-day workflows, identify pain points, and uncover opportunities for new features and improvements. Through this collaboration, your work will improve reliability, performance, and engineering velocity at scale, while helping shape how frontend code is written, tested, and shipped company-wide.

At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them.

To give you a quick overview of some of the areas our frontend core teams focus on: our Design Ops team works on our design system, Druids; our Frontend DevX team builds the foundations that all frontend product teams at Datadog rely on; and our Frontend Framework team owns Datadog’s core frontend platform, powering the UI, toolkit, packages, and more.

What You’ll Do:

• 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 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

Who You Are:

• You have 6+ years of experience building large-scale frontend systems, ideally in platform or developer experience roles
• You’re an expert in JavaScript/TypeScript and modern frontend frameworks such as React
• You have deep experience with modern frontend build tools, bundlers (e.g., Rspack, esbuild, Lage), and CI/CD workflows
• You’ve built internal tools, component libraries, or design systems for large engineering organizations
• You can lead cross-team initiatives and influence adoption of platform standards
• You’re focused on reliability, performance, and enabling efficient developer workflows via thoughtful developer experience

Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply.

Benefits and Growth:

• Generous and competitive benefits package
• New hire stock equity (RSUs) and employee stock purchase plan
• Continuous career development and pathing opportunities
• Employee-focused best in class onboarding
• Internal mentor and cross-departmental buddy program
• Friendly and inclusive workplace culture

Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog.

About Datadog:

Datadog (NASDAQ: DDOG) is a global SaaS business, delivering a rare combination of growth and profitability. We are on a mission to break down silos and solve complexity in the cloud age by enabling digital transformation, cloud migration, and infrastructure monitoring of our customers’ entire technology stacks. Built by engineers, for engineers, Datadog is used by organizations of all sizes across a wide range of industries. Together, we champion professional development, diversity of thought, innovation, and work excellence to empower continuous growth. Join the pack and become part of a collaborative, pragmatic, and thoughtful people-first community where we solve tough problems, take smart risks, and celebrate one another. Learn more about #DatadogLife on Instagram, LinkedIn, and Datadog Learning Center.

Equal Opportunity at Datadog:

Datadog is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and other characteristics protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. Here are our Candidate Legal Notices for your reference.

Privacy and AI Guidelines:

Any information you submit to Datadog as part of your application will be processed in accordance with Datadog’s Applicant and Candidate Privacy Notice. For information on our AI policy, please visit Interviewing at Datadog AI Guidelines.