Full Stack Engineer
Build agentic onboarding flows and MCP server capabilities that extend LaunchDarkly into developer tools. Drive PLG metrics through full-stack features, experimentation, and funnel analysis.
About the job
Responsibilities
- Drive features from problem framing through design partnership, full-stack implementation, instrumentation, rollout, and experimentation with clear line of sight to PLG metrics.
- Build the next version of LaunchDarkly's onboarding, including agentic flows that work inside a developer's IDE and plug into MCP servers and LLM-powered tooling.
- Instrument and analyze the growth funnel: signup, activation, first flag, first experiment, first paid conversion. Run experiments that move each step.
- Ship MCP server capabilities and agent skills that extend LaunchDarkly into the tools customers already use.
- Partner closely with PM, design, and data analyst to turn qualitative signal from self-serve customers into shippable experiments.
- Dogfood LaunchDarkly. Use flags, guarded rollouts, and experimentation on your own work.
- Support applications in production, including on-call.
Requirements
- 5+ years of full-stack engineering experience, with a portfolio of features driven from idea to production.
- Shipped AI-first features in production using MCP servers, agent frameworks, or LLM tool-use.
- Strong with TypeScript and React on the frontend. Able to hold your own in Go or Node on the backend.
- Track record of moving product-led growth metrics. Hands-on experience with instrumentation, funnel analysis, and A/B testing.
- Comfortable defining a hypothesis, wiring up a flag, running the test, reading the result, and changing your mind.
- Good instincts for developer onboarding. Collaborative engineer who works well alongside product and design.
- Genuine interest in where AI belongs in a developer platform.
Nice-to-Haves
- Experience with agent frameworks and LLM-powered tooling in production environments.
Skills
TypeScript, React, Go, Node.js, Mcp Servers, Llm Tool-Use, Agent Frameworks, A/B Testing, Instrumentation, Funnel Analysis
Similar jobs
Fullstack Engineering jobs
Baton
San Francisco, CA
Build scalable full-stack web applications across frontend and backend layers using React, TypeScript, Python, GraphQL, and FastAPI. The role requires at least three years of full-stack development experience and offers hybrid work in San Francisco.
Valon
United States
Build scalable web software and infrastructure for a complex, regulated mortgage-servicing platform. The role requires 4+ years of software engineering experience, strong cross-functional communication, and experience with web applications, distributed systems, mobile applications, or infrastructure.
Arini
San Francisco, CA
Build and deploy AI agents, automation workflows, and enterprise integrations that transform costly healthcare operations. The role requires production software development, customer collaboration, rapid iteration, and ownership of measurable business outcomes.
Teleskope
New York, NY
Build and own customer-facing data-security features end to end, tackling distributed systems and petabyte-scale production challenges. The role requires 3+ years of software engineering experience, strong backend skills in Go or Python, and expertise in databases and schema design.
Prelim
United States
Build and own scalable full-stack systems for financial institution onboarding, integrating with banking infrastructure and compliance providers. The role requires modern web technology experience, strong system design skills, customer collaboration, and a bachelor's degree.