Senior Software Engineer (Frontend) - Product Engineering (Lisbon)

Datadog’s Product Engineering teams build the interfaces that customers rely on to observe, monitor, and troubleshoot their systems in real time. As a Senior Frontend Engineer, you’ll lead the development of complex UI features used daily by hundreds of thousands of users across our core observability products. You’ll collaborate cross-functionally to shape the user experience, own architectural decisions, and continuously improve the performance and accessibility of our frontend systems. This is an opportunity to work at scale, influence product direction, and mentor others in a high-ownership, growth-oriented environment.

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 our frontend product focus areas, you can explore the Digital Experience Monitoring suite that includes RUM (improves frontend performance with proactive insights into user behavior), Error Tracking (groups and prioritizes application errors), and Synthetic Monitoring (automatically tests your apps and APIs to catch issues before users do).

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

What You’ll Do:

• Design, build, and deliver scalable frontend features for Datadog’s core observability products
• Collaborate with product managers, designers, and backend engineers to define user experiences, data flows, and APIs
• Lead technical discussions and contribute to long-term architectural decisions
• Improve performance, reliability, and accessibility of user-facing applications
• Set and uphold high standards for code quality, testing, and maintainability
• Mentor other engineers and promote frontend engineering best practices across the team

Who You Are:

• You have 6+ years of experience building production-grade frontend applications at scale
• You bring deep expertise in JavaScript/TypeScript and modern frameworks such as React
• You have strong knowledge of frontend architecture, performance optimization, and browser fundamentals
• You’ve taken major features from concept to launch with minimal supervision
• You’re an effective communicator who can influence technical direction
• You prioritize user experience and have an eye for UI quality and detail

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.

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