Staff Engineer / AI Builder - Mountain View

The role

A Staff AI Builder will lead the design and delivery of AI/ML systems. You will define AI architecture, lead model development, and solve integration problems on a cross-functional team.

What you will do

• Design and build agentic workflows including reasoning loops and orchestration
• Build and maintain RAG pipelines using chunking, embeddings, and vector search
• Integrate with AWS Bedrock and Agent Core
• Write and iterate on production system prompts
• Build eval and observability into agents using golden datasets and tracing
• Design for LLM failure using retries, circuit breakers, and fallback models
• Build backend services in Python and Node.js using serverless architectures
• Design DynamoDB single-table schemas
• Support event-driven orchestration
• Mentor other engineers and own assigned features and releases end-to-end

Required qualifications

• 6+ years of professional software engineering experience
• Experience shipping GenAI/LLM-powered systems in production
• Hands-on depth in agentic AI including reasoning loops and multi-agent orchestration
• Practical RAG expertise with chunking, embeddings, and vector databases
• Experience building evaluation and observability for LLM systems
• Strong prompt engineering skills
• Hands-on experience with the AWS GenAI stack including Bedrock, Agent Core, Lambda, DynamoDB, S3, SQS, EventBridge, and Step Functions
• Strong Python and Node.js skills
• Experience building full-stack applications and RESTful APIs
• Understanding of production reliability patterns for LLM-backed systems
• Experience with containerization (Docker) and cloud-native deployment
• Comfort owning ambiguous, integration-heavy problems

Nice to have

• Direct experience with Amazon Bedrock Agent Core
• Experience in a regulated or high-stakes domain
• Familiarity with workflow orchestration tools such as Step Functions, Sequencer, or similar
• A point of view on LLM observability tooling

Benefits

• Paid time off
• Medical/dental/vision insurance
• 401(k)

Before you apply

• An offer of employment may be conditional upon successful completion of a background check

About the company

Robots & Pencils design AI systems for a human world, pairing engineering with creativity. They ship production-ready AI in 30 to 45 days.