Senior AI Agent Engineer - Remote, Equity, Unlimited PTO

Relay; United States; Remote; USD 180,000 - 240,000; Full time

Benefits offered by this job

Competitive base salary

Equity package

Comprehensive health benefits

Unlimited PTO

Remote-first culture

Job summary

Relay, a cross-chain payments protocol, is seeking a Senior AI Agent Engineer on the Developer Experience team to own Relay's internal AI agent—a Slack-native system that works across our tools to investigate issues, answer questions, and complete operational work. This is a hands-on role measured by what the agent gets done, accurately and safely.

You will shape the backlog, turn expert workflows into agent skills and decision logic, and build knowledge systems with provenance and freshness.

Qualifications

• 5+ years of 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.

Responsibilities

• Cover US business hours.
• 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 information, with provenance.
• Improve retrieval, orchestration, and verification; own regressions through resolution.
• Measure task success, correction rate, latency, and cost, and report them.
• 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.

Skills

5+ years

LLM agents

Knowledge systems

TypeScript or Python

Evals / tests

Permissions / secrets

Technical spec-writing

Tools

MCP

Slack apps

Internal platforms

Job description

Relay, a cross-chain payments protocol, is seeking a Senior AI Agent Engineer on the Developer Experience team to own Relay's internal AI agent—a Slack-native system that works across our tools to investigate issues, answer questions, and complete operational work. This is a hands-on role measured by what the agent gets done, accurately and safely.

You will shape the backlog, turn expert workflows into agent skills and decision logic, and build knowledge systems with provenance and freshness.