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SDK Software Engineer

LaunchDarkly

$145,500 - $235,400
Dec 17, 2025
Remote, US
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LaunchDarkly aims to solve the problem of slow, inefficient software development cycles and unstable feature rollouts for developers. The SDK team is responsible for building robust, high-performance SDKs that enable customers to manage feature flags effectively, ensuring stability and innovation in software delivery.

Requirements

  • Demonstrable experience building libraries and packages used by other developers
  • Polyglot background with an ability to context switch between languages quickly
  • 5+ years experience with at least two of the following: .NET/Go/Ruby/Python/NodeJS/Java
  • Experience with the following is a plus: C++/Erlang/Haskell/Lua
  • Experience with the following is a plus: AI SDKs
  • Experience with the following is a plus: Observability SDKs
  • Experience with the following is a plus: Mobile development

Responsibilities

  • Contribute to development for SDKs in supported platforms:
  • Implement new features and improvements to meet customer performance and resiliency requirements
  • Keep up to date with the latest development practices
  • Collaborate with our engineering and product teams to drive the implementation and release of major features
  • Actively maintain our open-source repositories
  • Identify areas of improvement and advocate for best practices
  • Have an active voice in shaping both technology and product decisions

Other

  • Committed to working in a communicative, collaborative environment
  • Self‐starter and problem solver, willing to solve difficult problems and work independently when necessary
  • Strong computer science fundamentals
  • Experience writing production-ready code with emphasis on quality and maintainability
  • Experience contributing to open-source software