Core Engineering

The Team

Nothing is possible without the world-class team, assembled to redefine how businesses operate.

Core Principles

TASTE: CRAFT BEAUTIFUL EXPERIENCES.

No matter how small, we strive to make sure every detail is right. We care deeply about every interaction, both in terms of whether it helps the seller get the job done, but also how the product makes them feel. We get a visceral feeling when something is off and stop at nothing to make sure we make it right. We never settle, continuously exploring ways to delight sellers.

OBSESSION: COMMIT UNREASONABLY.

In all aspects of our craft, we commit. We not only are immediately reactive to customers’ requests but are proactive about driving value even before they ask. We are also obsessive about always learning and honing our craft, improving ourselves and product every single day.

ACTION: GET IT DONE.

Talking is easy but the difference comes from the execution. We lean heavily towards making thoughtful yet fast decisions and delivering immediately. We play in a field where trust is paramount. We earn the trust and right to empower the best sellers by forging a history of over-delivering on the promise at record speed.

At Rox, agents continuously

• retrieve context
• reason across changing state
• trigger actions
• update workflows
• coordinate across systems

Core Engineering builds the infrastructure that makes those loops fast, reliable, observable, and deterministic.

The Role

We are hiring a Core Engineer to help design and operate the foundational infrastructure behind Rox’s autonomous agent platform.

This role is ideal for engineers who have deep systems intuition and want to work on infrastructure problems at the frontier of AI reliability.

You might be a fit if you’ve spent time building

• distributed infrastructure
• streaming systems
• semantic search infrastructure
• graph-based retrieval systems
• execution runtimes
• reliability infrastructure
• low-latency backend platforms

Or if you’ve historically been “the person” inside your company for difficult infrastructure problems.

We care deeply about engineering craftsmanship, systems thinking, and people who can reason about long-term architecture under real-world scale constraints.

Why This Role Exists

Enterprise AI systems are moving toward autonomous execution.

The hard problem is not generating outputs. It’s building reliable systems that can reason, retrieve context, coordinate actions, and operate deterministically under real-world enterprise constraints.

We believe this requires a new category of infrastructure engineering.

That is the problem space this team exists to solve.

Responsibilities

• Build infrastructure for reliable autonomous agent execution
• Design systems for deterministic, auditable agent behavior at enterprise SLAs
• Develop low-latency retrieval and context systems powering AI workflows
• Build and scale graph-based infrastructure and semantic retrieval systems
• Improve observability, debugging, and reliability across distributed agent systems
• Work on real-time data ingestion and streaming architectures
• Collaborate closely with platform, AI, and product engineering teams
• Help shape the long-term architecture behind Rox’s agent runtime

Problems You’ll Work on

• Reliability for long-horizon AI workflows
• Agent orchestration across distributed systems
• Deterministic execution for autonomous systems
• Streaming context ingestion and retrieval
• Knowledge graph infrastructure
• Real-time state synchronization
• Low-latency execution pipelines
• Enterprise-grade observability for agent systems

In Your First Few Weeks

You understand Rox’s architecture, agent runtime, and infrastructure stack deeply enough to contribute to production systems.

In Your First Few Months

You are independently designing and improving core systems tied to agent reliability, execution, and retrieval performance.

Over Time

You help define the technical foundation that enables autonomous enterprise workflows to operate reliably at massive scale.

Qualifications

• Strong background in distributed systems or platform engineering
• Experience building and operating high-scale backend infrastructure
• Strong systems fundamentals across networking, concurrency, storage, and reliability
• Experience with streaming systems, distributed databases, or real-time infrastructure
• Ability to independently design and ship complex technical systems
• Strong product and engineering judgment

Particularly Relevant Backgrounds

We’d especially love to speak with engineers who have experience in areas like:

• Apache Flink
• distributed query engines
• real-time OLAP systems
• graph retrieval systems
• semantic search infrastructure
• streaming compute systems
• large-scale platform engineering
• AI infrastructure and orchestration systems

Additional information

Open source contributors, infrastructure specialists, and engineers who have historically operated as technical force multipliers inside their organizations tend to thrive here.

Location

This role is based onsite in San Francisco.

We strongly believe that the speed and complexity of the problems we are solving benefit from in-person collaboration. We actively relocate exceptional engineers from around the world and currently have team members who have moved from Europe, Canada, Asia, and Australia to join Rox.

If you want to work on deep infrastructure problems at the frontier of autonomous systems, we’d love to talk.

Benefits

• Medical, dental, and vision, including 100% company-paid plans for you and eligible dependents
• Company-paid life & AD&D, plus short- and long-term disability
• 401(k) with automatic enrollment
• Unlimited PTO, plus paid sick leave, company holidays, and bereavement
• Up to 20 weeks of paid parental leave at 100% pay (birth, adoption, or foster)
• Wellness stipend: $375/quarter
• Learning stipend: up to $2,000/year
• Internet & cell phone stipend: $25/month
• Mental health support, virtual care, and care navigation
• Fertility & family-building support, plus backup care membership
• Pre-tax commuter benefits (transit & parking)
• SF HQ: daily catered breakfast & lunch, meal allowances, and rideshare support when commuting to the office

To apply, please fill out the application form. We're looking forward to connecting with you!