Full Stack Engineer (Foundation)

Join LaunchDarkly as a Full Stack Engineer on the Foundation team. In this role, you will collaborate with product, design, data, and other engineering teams to drive initiatives from idea to shipped experiment. You will build onboarding flows, extend LaunchDarkly into existing developer tools, and focus on key product-led growth metrics. The position offers real latitude on stack, approach, and experiment design, with a focus on frequent shipping and iteration.

• Collaborer étroitement avec les équipes produit, design, données et d'autres équipes d'ingénierie pour transformer les initiatives de l'idée à l'expérimentation.
• Concevoir et mettre en œuvre la prochaine version de l'intégration de LaunchDarkly, y compris des flux agentiques qui fonctionnent à l'intérieur de l'IDE d'un développeur.
• Instrumenter et analyser le tunnel de croissance : inscription, activation, premier drapeau, première expérience, première conversion payante.
• Track record of moving product-led growth metrics. Hands-on experience with instrumentation, funnel analysis, and A/B testing. You think in leading and lagging indicators
• An experimentation habit. You are comfortable defining a hypothesis, wiring up a flag, running the test, reading the result honestly, and changing your mind
• Genuine interest in where AI belongs in a developer platform. You have thought about where agents help in your own workflow, and you want to bring that thinking into a product that a lot of developers will touch
• Comfort across the stack. Strong with TypeScript and React on the frontend. Able to hold your own in Go or Node on the backend. Our stack is TypeScript and Go
• A collaborative engineer who works well alongside product and design, communicates crisply, and enjoys the parts of the job that are not code
• Good instincts for what makes developer onboarding actually work. You have an opinion about when friction is a bug and when it is a feature
• Shipped AI-first features in production. You have used MCP servers, agent frameworks, or LLM tool-use in real products, not just demos, and you have a point of view on what works and what does not
• 5+ years of full-stack engineering experience, with a portfolio of features you personally drove from idea to production