Role Overview

Join Datadog as a Senior Software Engineer (Fullstack) - Product in Lisbon, Portugal, and become a key player in building the observability platform that powers cloud applications worldwide. At Datadog, fullstack engineers like you drive complex, user-facing features while contributing to robust backend systems. This frontend-focused fullstack role offers deep ownership over product surfaces that directly impact customers. Architect performant interfaces at scale, collaborate across disciplines, and create seamless experiences for Datadog's observability platform.

Datadog operates a hybrid workplace in Lisbon, valuing office culture for relationships, collaboration, and creativity while supporting work-life harmony. Note: This isn't a strict 50/50 split—expect frontend-led fullstack work with backend contributions varying by team and project.

Key Responsibilities at Datadog

• Architect, build, and ship end-to-end product features—owning frontend UI, backend logic, data modeling, and API design for cloud monitoring tools.
• Drive frontend excellence: Focus on performance, accessibility, responsiveness, and quality in React-based interfaces.
• Collaborate cross-functionally with product managers, designers, and backend engineers to define user experiences, data flows, and APIs.
• Enhance service reliability: Improve scalability of backend services supporting your features.
• Lead technical discussions: Influence architecture decisions and mentor on fullstack best practices.
• Ensure quality: Implement strong testing, documentation, and maintainability across the stack.
• Contribute to observability: Build features for Datadog's cloud monitoring and security platform.
• Optimize performance: Tune frontend state management and client-server interactions at scale.
• Innovate for customers: Translate broad requirements into polished, user-facing applications.

Qualifications & Requirements

• 6+ years experience building production-grade fullstack features at scale.
• Deep JavaScript/TypeScript expertise, especially React and modern frontend frameworks.
• Backend proficiency in Python, Go, Java, plus APIs, databases, distributed systems.
• Frontend architecture mastery: State management, performance tuning, client-server patterns.
• Strong communication: Lead collaborative design and architecture discussions.
• Product translation skills: Turn requirements into intuitive applications.

Datadog welcomes passionate technologists—even if you don't meet every qualification, apply to grow with us!

Salary & Benefits

Earn competitive compensation for Senior Fullstack Engineer roles in Lisbon, with realistic market estimates of $95,000 - $135,000 USD yearly (adjusted for location). Enjoy:

• Competitive equity: New hire RSUs and employee stock purchase plan.
• Health insurance for family.
• Commuter benefits for hybrid work.
• Fitness reimbursements and wellness support.
• Professional development stipend and career pathing.
• Best-in-class onboarding, mentors, and buddy programs.
• Inclusive culture with continuous growth opportunities.

*Benefits vary by country and employment type.

Why Join Datadog?

Datadog (NASDAQ: DDOG) is a global SaaS leader in cloud monitoring, observability, and security. We break down silos, enabling digital transformation for customers across industries. Built by engineers for engineers, Datadog powers infrastructure monitoring for entire tech stacks. In Lisbon, thrive in a collaborative, pragmatic, people-first community. Champion diversity, innovation, and excellence—solve tough problems, take smart risks, and celebrate wins. Check #DatadogLife on Instagram and LinkedIn.

As a Senior Fullstack Engineer, gain ownership in a high-growth company delivering profitability and scale. Hybrid Lisbon role perfect for frontend-led developers passionate about DevOps, cloud apps, and observability.

How to Apply

Ready to build the future of cloud observability? Apply now for the Senior Software Engineer (Fullstack) role in Lisbon. Submit your resume highlighting React, TypeScript, and fullstack experience. Join Datadog's pack and impact millions. Don't wait—positions fill fast!