Foundations Engineer (Deep Infra)

Members on our team have:

• Founded and exited successful companies

• Won IMO and IOI gold medals

• Published field-defining papers

Core Principles

Your Role

About the Foundations Team

The Foundations team builds the core infrastructure behind Rox agents.

We work on the systems responsible for:

• real-time context ingestion

• agent execution and orchestration

• reliability for long-horizon AI tasks

• low-latency decisioning across distributed systems

If you've worked on systems like:

• streaming compute platforms

• distributed query engines

• real-time OLAP systems

• matching engines

• large-scale data infrastructure

many of the problems here will feel familiar, but applied to a new category of software.

At Rox, agents are constantly:

• retrieving context

• making decisions

• triggering actions

• updating state

The Foundations team builds the infrastructure that makes those loops reliable, fast, and observable.

The Role

We are hiring a Foundations Engineer (Deep Infra) to design and operate the systems that power Rox’s agent runtime.

This role sits at the intersection of:

• distributed systems

• real-time data infrastructure

• agent orchestration

• decisioning systems

You will work on infrastructure similar to what powers large-scale data platforms, but optimized for continuous AI decision loops rather than batch analytics.

Many of the systems we are building resemble components from:

• streaming compute systems

• distributed query engines

• large-scale event processing pipelines

• matching and routing infrastructure

But with a new constraint: AI agents must operate continuously and reliably in production environments.

Responsibilities

Design and build core distributed systems powering Rox agents.

Build infrastructure for real-time context ingestion and retrieval.

Develop systems that enable low-latency agent decisioning at scale.

Improve reliability, observability, and fault tolerance across agent infrastructure.

Build execution frameworks that support long-running agent workflows.

Collaborate closely with product engineers and forward deployed engineers to translate infrastructure capabilities into customer impact.

Ship production systems quickly and evolve them based on real-world usage.

Qualifications

Experience building deep infrastructure systems in production.

Examples include:

• distributed data platforms

• streaming compute systems

• real-time analytics infrastructure

• distributed query engines

• high-scale backend services

Strong intuition for latency, reliability, and scalability tradeoffs.

Experience operating systems where real-world traffic exposes edge cases quickly.

Comfort debugging complex distributed systems in production.

A bias toward shipping systems, learning from production, and improving them continuously.

Benefits

• Medical, dental, and vision, including 100% company-paid plans for you and eligible dependents

• 401(k) with automatic enrollment

• Wellness stipend: $375/quarter

• Learning stipend: up to $2,000/year

• Internet & cell phone stipend: $25/month

• Pre-tax commuter benefits (transit & parking)