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Company

LaunchDarkly · 6 hours ago

Staff Software Engineer - JavaScript SDK

Hybrid - US

Full-time

Onsite

Senior Level, Lead/Staff

$200K/yr - $235K/yr

5+ years exp

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Developer ToolsDevOps

H1B Sponsor Likely

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Responsibilities

Lead the design, development, and release of LaunchDarkly’s JavaScript SDKs (e.g., Node Server, React) other supported platforms

Serve as a technical authority on JavaScript SDK development, mentoring team members and setting coding and design standards.

Architect SDKs to prioritize developer experience and align with modern JavaScript trends while ensuring compatibility and usability for both front-end and back-end ecosystems.

Establish and enforce rigorous testing, benchmarking, and quality assurance practices, ensuring SDKs meet stringent performance and reliability criteria.

Collaborate with engineering and product teams to translate complex requirements into practical and elegant SDK features.

Actively maintain and contribute to our open-source repositories.

Identify and implement improvements in architecture, tooling, and processes to enhance SDK performance and maintainability.

Stay at the forefront of technology trends, leveraging your deep expertise to advocate for and implement innovative solutions.

Qualification

Find out how your skills align with this job's requirements. If anything seems off, you can easily click on the tags to select or unselect skills to reflect your actual expertise.

JavaScriptTypeScriptHigh-performance librariesSoftware design patternsUnit testingIntegration testingLoad testingOpen-source softwareAlgorithmsData structuresFront-end frameworksBack-end frameworks

Required

5+ years of experience (or equivalent) developing high-performance libraries, SDKs, or developer tools in JavaScript, with a focus on delivering production-grade, maintainable code.

Advanced knowledge of JavaScript, TypeScript, and related ecosystems, with experience in both front-end and back-end frameworks.

Polyglot background— fluent in JavaScript, TypeScript, and at least one other language, with the ability to context switch between languages quickly.

Strong foundation in computer science principles, including algorithms, data structures, and software design patterns.

Excellent communication skills with the ability to work across teams and advocate for technical solutions.

Self‐starter and problem solver, willing to solve hard problems and work independently when necessary.

Strong testing background: experience building unit, integration, load tests, and benchmarks.

Experience writing production-ready code with emphasis on quality and maintainability.

Experience contributing to open-source software.

Benefits

Restricted Stock Units (RSUs)

Health, vision, and dental insurance

Mental health benefits

Company

LaunchDarkly

Glassdoor

3.5

LaunchDarkly is a feature management platform that allows software development teams to deliver to their customers.

Founded in 2014

Oakland, California, USA

501-1000 employees

https://launchdarkly.com/

H1B Sponsorship

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2023 (2)

2021 (5)