Sr Backend Engineer, Flag Delivery

ABOUT THE ROLE As a Sr Backend Engineer on the Flag Delivery team at LaunchDarkly, you will play a critical role in empowering teams to deliver and control software safely. Your primary responsibility will be to own the critical-path systems that stream feature-flag configuration to every connected SDK globally, in near real time. These systems must be reliable, low-latency, and correct, as any failure can result in customers losing control of their features. WHAT YOU'LL DO You will work on the next generation of the flag-delivery architecture, streaming rollouts, and reliability and scale hardening. Your key responsibilities will include: - Designing, building, and operating distributed systems that deliver feature-flag configuration to LaunchDarkly SDKs - Owning and improving the reliability, latency, and scalability of our streaming and polling infrastructure - Debugging and resolving complex production issues, sharing the team's on-call rotation - Partnering with SDK, Core Product, and Data Platform teams on how flags reach customers - Writing maintainable, well-tested code and engaging in code reviews, design reviews, and production-readiness discussions - Driving architectural decisions, trading off performance, cost, and operability - Raising the bar on observability, deployment safety, and operational process for Flag Delivery WHAT YOU'LL NEED To be successful in this role, you will need: - 6+ years of professional backend engineering experience, with significant work on distributed or high-throughput production systems - A track record of designing, building, operating, and debugging reliable, low-latency services - Strong production ownership, including on-call experience and a focus on reliability and observability - Proficiency in at least one backend language (Go, Rust, Python) and comfort on a cloud platform (AWS or equivalent) - Hands-on experience with infrastructure-as-code (Terraform or equivalent) and observability tooling (Datadog, Prometheus, New Relic) - A deep grasp of distributed-systems fundamentals: concurrency, partitioning, retries, idempotency, backpressure, and failure handling - The ability to write clean, maintainable code and collaborate well on technical design - Excellent communication skills and a high bar for operational excellence WHY REMOTE As a remote employee, you will have the flexibility to work from anywhere and enjoy a high level of autonomy. You will be part of a team that values trust, transparency, and open communication. BENEFITS LaunchDarkly offers a competitive salary, with target pay ranges based on Geographic Zones. The exact compensation may vary based on skills, experience, and location. Additionally, LaunchDarkly provides Restricted Stock Units (RSUs), health, vision, and dental insurance, and mental health benefits.