Sr Backend Engineer, Flag Delivery
About The Position
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.
Requirements
- 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.
- Writes clean, maintainable code and collaborates well on technical design.
- Communicates clearly and holds a high bar for operational excellence.
Responsibilities
- 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 reviews, design reviews, and production-readiness discussions.
- Drive architectural decisions, trading off performance, cost, and operability.
- Raise the bar on observability, deployment safety, and operational process for Flag Delivery.
Benefits
- Restricted Stock Units (RSUs)
- health, vision, and dental insurance
- mental health benefits
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
