Foundations Engineer (Agents, SF In Office)

Rox Backend Platform EngineerAt Rox, we believe in empowering people to do their best work. Our platform supercharges sellers with autonomous revenue agents to do the manual work so they can focus on what they do best: selling. Just as coding agents 10x'd engineering, revenue agents 10x customer work. We are reimagining the revenue stack by building the world's first revenue operating system, from the application layer to the system of context. With Rox, humans are evolving to orchestrators while agents manage the end-to-end customer lifecycle. Rox powers Global 2000 leaders in banking, hardware, construction, and sovereign AI, while serving dominant AI winners like Ramp and Cognition. Underlying all of this success is a unwavering, shared belief in the mission, with an unreasonable commitment of doing whatever it takes to make it a reality. Your RoleAs a Backend Platform Engineer at Rox, you'll be at the center of building intelligent, agentic workflows that redefine how the world's top revenue teams operate. You'll work across the full lifecycle of AI-driven product development, from training and evaluating models to integrating them into user-facing systems. You'll collaborate closely with engineers, designers, and customers to iterate quickly, ship impactful features, and continuously improve the intelligence and reliability of our agent swarm. You'll be responsible for designing multi-step workflows, applying cutting-edge LLM research in production, and driving the experimentation and evaluation loop for AI-powered features, all in a fast-moving, product-focused environment. ResponsibilitiesHigh Ownership: Ability to do E2E design and implement scalable systems independently, define/understand requirements and write clean codeCustomers First: Engage closely with customers to understand requests, join customer calls and ship out solutions working closely with product and AI engineersSystems Understanding: Understanding of data storage systems (Amazon Aurora, DynamoDB, Snowflake, S3). Understanding of queuing / streaming systems (SQS, Kafka, Spark)Operations: Be obsessed about operations and strive to ensure that there is minimal to no downtime or impact to the customerBias for action: Ability to work and ship in a fast paced environment with weekly deliverables; has founder-energy to work with as minimal direction as possibleBe Curious: Curious to learn, work hard and have a growth mindsetQualificationsBS or MS in Computer Science or related field. 5+ years of work experience; having built and scaled platform systems is a plusTech stack: Python, Flask, AWSUnderstanding of LLM models and/or deep understanding of services in multiple clouds is a plusBe located in or willing to relocate to San FranciscoBenefitsCompetitive pay with considerable equity upsideHealth InsuranceTo apply, please fill out the application form. We're looking forward to connecting with you!