Senior Software Engineer, Agent Platform

About the Role

We're looking for a Senior Software Engineer to join our Director of Engineering building ShopMy's agent orchestration platform: the system our AI agents are built, run, managed, and improved on. Your job is the platform itself: the trigger layer that routes every inbound event from Slack, Linear, GitHub, and the ShopMy product; durable multi-step workflows; human-in-the-loop approvals; agent memory; evals; cost attribution; and the console it's all managed through. You'll partner closely with the agent managers who design and run the agents themselves. It's a small team with broad ownership, and the design challenge is keeping it a true platform - model-agnostic, with diverse triggers, composable workflows, and abstractions that make the next agent cheap to launch instead of a one-off build.

Your Impact to the Role

• Design and evolve the orchestration core: a declarative trigger system spanning Slack, Linear, cron, and HTTP; durable workflows; and agent runs that can suspend and resume around human approval
• Find the abstractions that keep the platform general, so the next agent or workflow composes existing machinery instead of forking a new code path
• Build the tool layer that gives agents their capabilities: Slack, Linear, GitHub, Notion, MCP, and a dynamic tool registry
• Build the management console agent managers use to create, evaluate, and improve agents (React)
• Make agent behavior legible: run tracing, evals and judges, feedback loops, and per-run cost attribution
• Design and implement APIs in TypeScript and NestJS backed by Postgres
• Deploy and operate the platform on AWS (ECS, ALB, CloudFormation, CloudWatch)

You Are Energized By

• Platform engineering with your users in the building: agent managers build on what you ship, and feedback arrives in hours, not quarters
• Working where the patterns aren't established yet: durable execution, human-in-the-loop, memory, and evals for nondeterministic systems are problems you'll help define
• Finding the abstraction that turns a special case into a capability
• Solving complex technical challenges with clean, efficient, and scalable code

What We're Looking For

• Strong proficiency in TypeScript, Node.js, and relational databases
• Experience building systems other engineers build on: internal platforms, frameworks, orchestration or developer tooling, and the API design instincts that come with it
• Enough hands-on time with LLMs to be comfortable building an agent yourself: tool calling, context and memory, and evaluating nondeterministic behavior
• Experience building interfaces that make complex systems easy to understand and manage
• Experience deploying and operating production services on AWS: containers, ECS, ALB, and monitoring with CloudWatch or similar
• AI-assisted development (Claude Code, Cursor, or similar) as a core part of how you work
• Keen attention to detail in code structure and style
• 5+ years of professional software engineering experience

Bonus Points

• You've built on or operated durable-execution or workflow engines (Temporal or similar), or rolled your own
• You've shipped agent systems, built with agent frameworks (LangGraph, the Claude Agent SDK, or similar), written MCP servers, or built eval harnesses
• Experience working in high-growth startups or fast-paced product environments
• Enjoy mentoring and helping shape engineering best practices and team culture