Software Engineer, Sandbox & Agent Executor

About the Position

We are looking for a Software Engineer, Sandbox & Agent Executor to join our Engineering team in San Francisco, United States. At Retool, we are building the platform that makes it safe to ship software, especially with AI tools. Our platform helps developers and domain experts automate work, focusing on creative problem-solving and strategic tasks.

Responsibilities

As an AI Engineer, you will:

• Own the behavior of agentic features across multiple product surfaces, including quality, safety, variance, and failure modes
• Work across the product and infrastructure boundary, shaping agent behavior while understanding its runtime costs
• Design and evolve prompting, context construction, retrieval, routing, and tool-use strategies for long-horizon workflows
• Detect, diagnose, and resolve non-deterministic failures such as hallucinations, partial correctness, instruction drift, or context sensitivity
• Partner with product and infrastructure teams on how agent workloads are provisioned, isolated, and rolled out

Requirements

• 6+ years of professional engineering experience, with ownership over complex systems in production
• Production experience with agentic systems, including context engineering, tool use, and evaluation frameworks
• Hands-on experience with sandboxing technology and running agents inside sandboxed environments
• Experience in Kubernetes or equivalent in practice (EKS, ECS, or similar), owning services end to end
• Strong systems thinking, with the instinct to use AI as an augment to engineering judgment rather than a replacement for it
• Curiosity in why a model produced what it did, and the habit of checking rather than assuming
• Experience mentoring engineers on this kind of work, including when to lean on a model and when not to

Nice to Have

• Experience building for developer surfaces like CLIs, IDE extensions, or coding harnesses
• Experience shipping into enterprise or air-gapped environments, where you debug systems you can't directly observe

We Offer

• Base salary range: $163,800 – $306,000 per year
• Comprehensive benefit plan, including medical, dental, vision, and 401(k)
• Hybrid work location

About the Company

At Retool, we are building the platform that makes it safe to ship software, especially with AI tools. Our platform helps developers and domain experts automate work, focusing on creative problem-solving and strategic tasks. Join us in building reliable AI systems and shaping the future of software development.