AI Engineer, Developer Ecosystem

StackOne • San Francisco, CA

11h

About The Position

StackOne is the AI Integration Gateway for SaaS products and AI Agents. Backed by GV and Workday Ventures ($24M raised), we help builders of SaaS platforms and AI Agents orchestrate hundreds of scalable, accurate, and enterprise-grade integrations. Our platform combines 25,000 pre-mapped actions on 200 connectors, an AI-powered integration development toolkit, plus security by design: a real-time architecture, managed authentication and permissions, and end-to-end observability.
Join us on our fast trajectory to build the future of agentic integrations.
🚀 We're not hiring a content marketer who can code. We're hiring an AI engineer who loves building in public.
What you'll actually do
Build agents and tools in public: demo apps, reference implementations, MCP servers, Claude skills, LangGraph workflows. Ship things that are genuinely impressive.
Own the developer experience: identify friction in our API and SDKs, write real feedback back to the eng team, and fix it yourself when you can.
Design and run evals: benchmark tool-calling quality, measure agent reliability across integration surfaces, build sandboxed test harnesses that reflect production conditions. Publish what you learn.
Run workshops, give talks, appear at events: technical sessions on agentic architectures, tool-calling patterns, context optimization, and integration design.
Publish AI research adjacent to your work: MCP tool schema design, context window hygiene, eval frameworks for agentic systems, RLMF, auto-research loops, sandbox architecture for safe agent execution.
Foster community: Discords, GitHub, demo days, office hours. Be the engineer developers trust to give them a real answer.
Partner with product and engineering: turn new releases into working demos before they're announced. No slide decks without code.

This is a real engineering role
This isn't a "write blog posts and attend conferences" role dressed up as engineering. You'll be embedded with the product and engineering team. You'll ship code that ends up in our SDKs, our docs, and our sample repos.
The AI agent ecosystem is moving fast enough that the line between DevRel and R&D is blurring. We want someone comfortable sitting in that blur — writing a technical post about eval design for tool-calling reliability because they spent two weeks deep in it, building a sandbox harness to reproduce a flaky agent behavior, not because someone briefed them on a slide.
You'll have access to a platform that connects agents to any other system safely while optimising token usage, and a mandate to show the world what's possible when those connections actually work well.

Requirements

• Ship production-grade agents
• Deep MCP / tool-calling fluency
• Built plugins, skills, extensions, or agents for real usage
• Designs evals and benchmarks for agentic systems
• Builds sandboxes for safe agent testing
• Understands context optimization
• Reads AI research papers and applies them
• TypeScript and/or Python at minimum
• GitHub history you're proud of
• Technical talks on record
• Community presence
• Builds to learn, not to demo
• Gives direct opinions, backed by data
• Doesn't wait to be unblocked

Responsibilities

• Build agents and tools in public: demo apps, reference implementations, MCP servers, Claude skills, LangGraph workflows. Ship things that are genuinely impressive.
• Own the developer experience: identify friction in our API and SDKs, write real feedback back to the eng team, and fix it yourself when you can.
• Design and run evals: benchmark tool-calling quality, measure agent reliability across integration surfaces, build sandboxed test harnesses that reflect production conditions. Publish what you learn.
• Run workshops, give talks, appear at events: technical sessions on agentic architectures, tool-calling patterns, context optimization, and integration design.
• Publish AI research adjacent to your work: MCP tool schema design, context window hygiene, eval frameworks for agentic systems, RLMF, auto-research loops, sandbox architecture for safe agent execution.
• Foster community: Discords, GitHub, demo days, office hours. Be the engineer developers trust to give them a real answer.
• Partner with product and engineering: turn new releases into working demos before they're announced. No slide decks without code.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed