LaunchDarkly helps teams safely manage code and AI agents in production with feature flags, progressive delivery, automated rollback, and runtime control. Backed by Bessemer, Insight and 500 Global.
About the role
Software powers the world, and LaunchDarkly empowers teams to deliver and control it safely. As a Senior Software Engineer on the Flag Delivery team, you will own the critical-path systems that stream feature-flag configuration to every connected SDK globally, in near real time. These systems run at high scale and have to stay reliable, low-latency, and correct; when they fail, customers lose control of their features.
What they're looking for
- 6+ years of professional backend engineering, with significant work on distributed or high-throughput production systems
- Track record designing, building, operating, and debugging reliable, low-latency services
- Strong production ownership, including on-call experience and a focus on reliability and observability
- Proficient in at least one backend language (Go, Rust, Python) and comfortable on a cloud platform (AWS or equivalent)
- Hands-on with infrastructure-as-code (Terraform or equivalent) and observability tooling (Datadog, Prometheus, New Relic)
- Deep grasp of distributed-systems fundamentals: concurrency, partitioning, retries, idempotency, backpressure, and failure handling
More about this role
Software powers the world, and LaunchDarkly empowers teams to deliver and control it safely. As a Senior Software Engineer on the Flag Delivery team, you will own the critical-path systems that stream feature-flag configuration to every connected SDK globally, in near real time. These systems run at high scale and have to stay reliable, low-latency, and correct; when they fail, customers lose control of their features.
This is added headcount on a growing team. You will work on the next generation of the flag-delivery architecture, streaming rollouts, and reliability and scale hardening. Our stack is Go, AWS, Terraform, and Datadog, but exact tool match matters less than deep backend expertise and a track record of owning production systems.
Design, build, and operate the distributed systems that deliver feature-flag configuration to LaunchDarkly SDKs.
Own and improve the reliability, latency, and scalability of our streaming and polling infrastructure.
Debug and resolve complex production issues, sharing the team’s on-call rotation.
Partner with SDK, Core Product, and Data Platform teams on how flags reach customers.
Write maintainable, well-tested code and engage in code...
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