Senior Software Engineer - Mercury Command
Core
Designing and building agentic workflows and capabilities for Command, Mercury's LLM-powered financial assistant that helps users manage finances, send payments, and issue cards via natural language.
Role type
Senior IC LLM application engineer (agentic systems)
Builds
Command (LLM-powered financial assistant) and its underlying agentic workflow architecture
Domain
Fintech / Generative AI / LLMs
Deliverable
production ML models | product features
Required skills
LLM-powered application development, agentic system design, multi-step workflow architecture, eval infrastructure, prompt engineering, TypeScript, Haskell
Preferred skills
Mentoring engineers, raising technical bar, full-stack AI product experience
Technologies
TypeScript, Haskell, LLMs
Responsibilities
Design and ship new Command skills (domain-specific instruction sets), design and build agentic workflows, define tool schemas for new capabilities, maintain and evolve prompt architecture, tune model behavior, write and expand eval harness, partner with product and compliance teams on quality definitions
Seniority
Senior, hands-on IC