Remote Backend Engineer, SDKs & High-Performance Systems

Mixpeek; United States; Remote; USD 146,000 - 200,000; Full time

Job summary

LaunchDarkly is seeking a Software Engineer on the SDK team to build the primary touchpoints customers interact with daily across 35+ SDKs. You will contribute to high‑performance, multi‑language libraries emphasizing concurrency, reliability, and idiomatic practices for our tech stack.

This remote role collaborates with experienced engineers across time zones, offers visibility as our open‑source SDKs evolve in public, and provides opportunities to influence roadmap and product decisions while

Qualifications

• Demonstrated experience building libraries and packages used by other developers.
• Polyglot background with ability to context switch between languages quickly.
• 5+ years experience with at least two of the following: .NET/Go/Ruby/Python/NodeJS/Java.
• Strong computer science fundamentals.
• Self-starter, collaborative, and able to communicate effectively.
• Experience writing production-ready code with emphasis on quality and maintainability.
• Experience contributing to open-source software.

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.

Skills

Polyglot background

5+ years with multiple languages

Strong CS fundamentals

Self-starter and collaborative

Strong testing background

Production-ready code experience

Open-source contribution

Tools

C++

Erlang

Haskell

Lua

AI SDKs

Observability SDKs

Mobile development

Job description

LaunchDarkly is seeking a Software Engineer on the SDK team to build the primary touchpoints customers interact with daily across 35+ SDKs. You will contribute to high‑performance, multi‑language libraries emphasizing concurrency, reliability, and idiomatic practices for our tech stack.

This remote role collaborates with experienced engineers across time zones, offers visibility as our open‑source SDKs evolve in public, and provides opportunities to influence roadmap and product decisions while