Senior Backend Engineer, Experimentation

Responsibilities

• Design, build, and operate scalable backend services and APIs that power LaunchDarkly’s Experimentation product.
• Own backend components across their lifecycle, including technical discovery, design, implementation, testing, deployment, monitoring, incident response, and continuous improvement.
• Build and evolve systems supporting experiment setup, event data ingestion, metric computation, results processing, and results presentation.
• Contribute to architectural decisions and technical proposals, making thoughtful trade-offs around scalability, reliability, performance, cost, and maintainability.
• Partner with product managers, designers, data scientists, and adjacent engineering teams to translate customer needs and product goals into reliable technical solutions.
• Collaborate with Data Platform, Warehouse Integrations, SDK, and other teams on shared data flows, services, and cross-team dependencies.
• Investigate complex production issues, identify root causes, and implement durable fixes.
• Improve observability, testing, deployment safety, operational processes, and the reliability of the systems you build.
• Participate in the team’s on-call rotation and take ownership of production systems in a you-build-it-you-run-it culture.
• Support teammates through thoughtful code reviews, design reviews, knowledge sharing, and informal mentorship.

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