As the Founding Platform Engineer, you will build the shared infrastructure layer that makes production-grade AI agent deployments safe and scalable. You'll own integrations, observability, and deployment workflows for multi-agent systems, moving from bespoke implementations to a repeatable platform used by major enterprise brands across the US and Europe.
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Founding Platform Engineer at Defyner
Marketing is being rebuilt by AI, and this is your chance to architect the infrastructure behind it. As the Founding Platform Engineer at an angel-backed AI-native consultancy, you will build the core operating system for production-grade multi-agent deployments within enterprise stacks. You will move the needle from bespoke agentic experiments to repeatable, governed software systems for global brands. With a significant AWS partnership on the horizon and 0→1 ownership of the platform layer, this role is perfect for a Python expert who thrives at the intersection of agentic reliability and enterprise-scale systems thinking.
About this role
Role overview
About the company
Defyner
Software1-10 employees
Angel-backed AI-native marketing consultancy deploying multi-agent systems for enterprise brands
What you'll do
What you will do
- Design and build an integrations framework (MCP/tooling) to connect agents to enterprise systems with audit trails.
- Implement robust evaluation pipelines and regression tests to check agent outputs against brand governance and success metrics.
- Create a reusable deployment pattern that allows agent workflows to be shipped securely inside client-controlled infrastructure.
Who you are
Who this is a fit for
- Deep experience with Python and production multi-agent systems using stacks like LangChain, LangGraph, and LangSmith.
- Proven track record in platform engineering, including building tool interfaces, observability, and IAM security patterns.
- Strong systems thinker comfortable with enterprise security requirements, data residency, and deploying into constrained client environments.
Why this role
Why this role is remarkable
- Significant technical ownership of a 0→1 platform layer that directly impacts major enterprise brands like Zillow and Amundi.
- Strategic AWS partnership opportunity to build agentic integrations for Amazon Ads, representing a high-upside technical bet.
- Influence the engineering culture and standards of an AI-native consultancy rebuilding marketing production at software speed.
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