Applied AI Engineer
You'll be an early member of Slash AI Labs, a small, high-leverage team responsible for bringing AI deeply into every surface of the product. You'll help incubate what comes next after Twin, the company's agent platform powered by a custom orchestration runtime, tool-calling over a structured ontology graph, MCP, and multi-surface delivery across web, Slack, and API. If you want to build production AI systems at a fast-growing fintech that ships constantly, you'll ship full-stack AI features end to end, extend the agent runtime, design multi-surface agent experiences, build internal AI tooling, and work directly with leading LLM APIs and infrastructure.
Responsibilities
- Ship full-stack AI features end to end, from prompt engineering and agent orchestration to React UI and API integration
- Build and extend the agent runtime: orchestration, tool execution, MCP servers, graph-based conversation state, and context compaction
- Design and implement multi-surface agent experiences across web, Slack, and programmatic APIs
- Build internal AI tooling and platforms, model evaluation frameworks, prompt management, and LLM observability tooling
- Work directly with Anthropic and OpenAI APIs, the Vercel AI SDK, and the custom orchestration layer to solve challenging problems in tool-calling, long-context management, and multi-step reasoning
- Improve and scale AI infrastructure: inference routing, model tiering, prompt caching, and streaming architecture on AWS/EKS
Requirements
- Has shipped full-stack AI products to production, not just prototypes, but systems that serve real users reliably
- Is proficient in TypeScript or modern web frameworks (React, Next.js, Node.js) with strong backend fundamentals
- Has hands-on experience with LLM APIs (Anthropic, OpenAI), with a strong grasp on tool-calling, structured output, and streaming
- Can build and iterate quickly
- Has experience with one or more of: agent orchestration, MCP, RAG, structured extraction, or model evaluation
Benefits
- Comprehensive health + benefits plan
- Unlimited PTO