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# Senior AI Agent Engineer

- **Company:** Relay, Inc.
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Audit Trail, Automation of Tests, Encodings, Programming Tools, Graph Database, Python (Programming Language), Knowledge-Based Systems, Software Engineering, TypeScript, Ontology Design, Large Language Models, Virtual Agents, Entity Resolution, Api Management
- **Published:** November 12, 2026
- **Apply:** https://www.adzuna.com/details/5961426056

## About the Role

* You're a product-minded engineer who ships AI systems into real workflows
 * You care about correctness, permissions, and failure handling as much as model capability
 * You read traces before you change prompts
 * You'd often rather add a linter, a type, or a test than tune a prompt
 * You know when conventional software beats an agent
 * You can sit with a domain expert, extract how they decide, and encode it into testable behavior
 * You're comfortable being the first dedicated hire for a new function

Skills and abilities

Must-have

 * 5+ years in software engineering, developer tooling, or platform engineering
 * Production experience with LLM agents: tool use, retrieval, structured outputs, orchestration
 * Experience building search, retrieval, or knowledge systems across structured and unstructured information
 * Strong TypeScript or Python and experience building API integrations
 * Experience designing evals or automated tests for nondeterministic software
 * Familiarity with permissions, secrets, auditability, and safe handling of side effects
 * Strong written communication; you can turn an expert's workflow into a precise spec

Nice to have

 * Experience with MCP or comparable tool and context protocols
 * Experience with Slack apps, support automation, or internal platforms
 * Experience with entity resolution, knowledge graphs, ontology or taxonomy design, ranking, or semantic enrichment
 * Experience in crypto, payments, or another high-stakes domain

## Description

We're hiring a Senior AI Agent Engineer on the Developer Experience team. You'll own Relay's internal AI agent - a Slack-native agent that works across our tools to investigate issues, answer questions, and complete operational work.

This is a hands-on builder role. You're measured by what the agent gets done, accurately and safely.

What you'll do

Cover US business hours

 * This role is remote within the United States, with dependable overlap with the teams whose workflows you're automating.

Own and improve the agent

 * Own the agent backlog; prioritize by impact, frequency, and risk
 * Review real misses each week and turn them into regression evals, fixed tools, or better guidance
 * Turn expert workflows into agent skills, decision logic, and escalation paths
 * Build knowledge systems that help agents find, connect, and reason over Relay's structured and unstructured information, with clear provenance and freshness
 * Improve retrieval, orchestration, and verification; own regressions through resolution
 * Measure task success, correction rate, latency, and cost, and report them

Connect agents to Relay's systems safely

 * Integrate agents with internal systems through APIs and MCP tools
 * Choose deterministic code, simple automation, or agent behavior on the merits
 * Treat permissions, side effects, human approval, and failure recovery as product features