Staff Backend Engineer

Job Description

Job Description

About Circuit

Circuit is building the world’s first company-centric knowledge network. Our AI-powered platform turns fragmented information into actionable knowledge that can be securely shared across partners, vendors, and customers. Backed by a senior team and early enterprise traction, we’re moving fast, and we’re looking for a Staff Backend Engineer to help us scale our backend infrastructure as we onboard more customers and expand our agentic capabilities.

The Role

As a Staff Backend Engineer, you’ll play a critical role in shaping and scaling Circuit’s backend systems and infrastructure. You’ll own complex backend services built primarily in Go, with a focus on resilience, scalability, and performance under increasing load. A significant portion of Circuit’s agentic functionality lives in the backend, and you’ll be instrumental in ensuring it can evolve and handle new levels of demand.

Our teams operate with a high degree of independence and ownership. Engineers are expected to communicate early and clearly to avoid surprises, act with urgency, and fix issues without waiting to be asked. We hold a high bar for quality while shipping frequently, testing assumptions early, and learning quickly from real-world feedback. You’ll often work through ambiguity by framing problems, asking the right questions, and making progress with incomplete information. Curiosity and internal drive matter : we expect engineers to deeply understand the systems they build, the customers they serve, and how their work creates real-world impact.

Key Responsibilities

• Lead design, implementation, and scaling of backend infrastructure and services, primarily in Go.
• Ensure backend systems are resilient, observable, and performant under high customer load.
• Drive architectural decisions for long-term scalability and maintainability.
• Contribute significant code to core backend systems, focusing on efficiency, robustness, and developer velocity.
• Establish and promote engineering best practices across the backend team.
• Collaborate closely with product, ML, and frontend teams to deliver high-quality features.
• Mentor and support other engineers, fostering growth and knowledge sharing.

Experience

Human Skills

What We Offer

Equal-Opportunity Employer

We are an equal-opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Who Should Apply

If you’re a senior backend engineer with deep Go expertise, excited about scaling infrastructure under real-world load, and motivated to shape the future of agentic systems at a fast-moving startup, we’d love to hear from you!