Senior Director, Infrastructure Architecture & Engineering

Five9 is investing in the leadership of its platform function. We want someone who runs this like a software product organization. Infrastructure architects who use code on the side won’t make it here. 

You will have deployed platforms that real developers consume. Versioned modules. Real release cadence. Deprecation done right. Consumers who pin to interfaces because they trust them. You will have built and run end-to-end pipelines where build, test, security, deploy, observe, rollback, and upgrade are first-class concerns. If you spent your career drawing diagrams and handing them off, this isn’t the seat for you. 

The infrastructure as a service (IaaS) platform function is being reshaped, the team is being built up, and modernization is already in motion. Today the platform work is fragmented across reporting lines and skill sets. The right person walks in expecting that, gets the urgent work stable, and starts shaping the team and the operating model on a clock we can measure. 

This is a player-coach leadership role requiring strong technical judgment, hands-on engagement in architecture and engineering practices, and the ability to build teams and systems that scale beyond individual dependency. 

What success looks like in your first 120 days 

• A working map of the platform estate across our DCs and our cloud footprint, plus a clear-eyed read on the engineering practice you inherited and the team behind it
• A personnel evaluation and a product roadmap, written like a software roadmap and not an architecture deck, that shows how Five9 moves toward an Internal Developer Platform with paved roads, self-service, and end-to-end pipelines, sequenced against budget and the work that’s already running
• New engineers ramping into the team, retained engineers in active upskilling, a clear hiring plan in motion
• Platform capabilities delivered end-to-end through the pipeline with real consumers, on-call and incident load redistributed across the team, you stepping out of the critical path 

What you bring to Five9

• Proven track record building, scaling, and transforming high-performing engineering organizations 
• Experience stabilizing and modernizing under-resourced teams and operational environments
• Strong leadership skills with the ability to build accountability, ownership, and engineering discipline across globally distributed teams
• Proven ability to lead large-scale technical and organizational transformation in complex production environments
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