Ryan Lopopolo

Ryan Lopopolo leads engineering at Google, working on agentic systems for Google Cloud Platform. He has written about harness engineering and explored how agents can take on software-development work when given the right tools, context, and guardrails. Previously, he held engineering roles at Snowflake, Brex, Stripe, and Citadel.

Career

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Based in: Seattle
Elsewhere

Google

2026 — Present

Principal Engineer

Snowflake

2024 — Dec 2024

Staff Software Engineer

Brex

2021 — Dec 2024

Senior Staff Software Engineer

Stripe

2017 — Dec 2021

Staff Software Engineer

Citadel

2016 — Dec 2017

Platform Engineer

Massachusetts Institute of Technology

Bachelor's studies in software

Products & media

hyperbo.la

Agent Utilization Is the New Performance Ceiling

Writing

hyperbo.la

Senior Engineers Build Consensus

Writing

youtube.com

Harness Engineering: How to Build Software When Humans Steer and Agents Execute

A talk on designing agent workflows with the tools, context, and guardrails needed for agents to carry out software tasks.

Media appearance

cloud.google.com

Ryan Lopopolo on agent harnesses and autonomous coding

A Google Cloud Blog recap of a conversation about autonomous coding workflows, agent context, and moving engineering interventions earlier in the process.

Media appearance

lspace.beehiiv.com

Extreme Harness Engineering for Token Billionaires

A podcast conversation about building software with agents, including the Symphony orchestration system and the team's approach to agent-driven development.

Media appearance

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Ryan Lopopolo

Google

Snowflake

Brex

Stripe

Citadel

Massachusetts Institute of Technology

Products & media

Agent Utilization Is the New Performance Ceiling

Senior Engineers Build Consensus

Harness Engineering: How to Build Software When Humans Steer and Agents Execute

Ryan Lopopolo on agent harnesses and autonomous coding

Extreme Harness Engineering for Token Billionaires

Curated Lists

List Inclusions