SeniorSoftwareEngineer-CoreInfrastructure

ABOUT BUILD AI for the Built World: Build has created the agentic AI stack for institutional real estate, automating complex development and acquisitions workflows 90% faster than humans to accelerate the world’s most important built projects - digital infrastructure, energy, industrial - from concept to completion. Our mission is to accelerate and amplify the world's most important built projects - inventing a better way to build through a collaboration between human experts and agentic AI. We envision a future where the world's buildings are driven from concept to completion, autonomously. Without delays, cost, and complexity. Enabling people to deliver a magnitude more deals. To make decisions, build relationships and create. To start, we're partnering with the world's biggest built world institutions from $T alternative assets investors, prolific developers and even governments to push the frontier of what's possible. We’re backed by c-suite from Blackstone and OpenAI alongside the world’s best venture capital firms. Join us in shaping the future of the Built World and exponentially accelerate your career in the process. We welcome you to do your life's work here. ABOUT THE ROLE You own the foundational systems that make Build’s agentic AI real in production. This role is responsible for the infrastructure that orchestrates autonomous agents, manages long-running, high-stakes workflows, and guarantees reliability at institutional scale. Your work sets the hard limits of speed, autonomy, and trust across the entire product; - Build and operate the core primitives: agent orchestration, workflow engines, state management, eventing, and execution reliability. - Design systems that survive real-world failure modes: partial data, human handoffs, long timelines, regulatory constraints, and zero tolerance for silent errors. - Make architectural decisions that directly determine product capability, velocity, and customer trust. - Own infrastructure end-to-end: design, im