Senior Backend Engineer — Real‑Time Feature Delivery

Cervin; Northern (KY); Hybrid; USD 163,000 - 224,000; Full time

Benefits offered by this job

RSUs

Health insurance

Vision insurance

Dental insurance

Mental health benefits

Job summary

LaunchDarkly is seeking a Senior Software Engineer for the Flag Delivery team. You will own critical-path systems streaming feature-flag configuration to every connected SDK globally, in near real time, ensuring reliability and low latency.

You will help shape the next generation of the flag-delivery architecture, streaming rollouts, and reliability and scale hardening, with a Go/AWS/Terraform stack and a strong production ownership mindset.

Qualifications

• 6+ years of professional backend engineering experience.
• Track record designing, building, operating, and debugging reliable, low-latency services.
• Strong production ownership, including on-call experience and observability focus.
• Proficient in at least one backend language (Go, Rust, Python) and comfortable on 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 communicates clearly with high operational standards.

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.

Skills

Backend engineering

Distributed systems

On-call ownership

Observability

Go

Rust

Python

Tools

Terraform

Datadog

Prometheus

New Relic

AWS

Job description

LaunchDarkly is seeking a Senior Software Engineer for the Flag Delivery team. You will own critical-path systems streaming feature-flag configuration to every connected SDK globally, in near real time, ensuring reliability and low latency.

You will help shape the next generation of the flag-delivery architecture, streaming rollouts, and reliability and scale hardening, with a Go/AWS/Terraform stack and a strong production ownership mindset.