Senior AI Architect & Builder (GenAI Systems)

Robots & Pencils; Mountain View (CA); In loco; USD 166.000 - 228.000; Tempo pieno

Descrizione del lavoro

Robots & Pencils is seeking a Staff AI Builder to lead the design and delivery of AI/ML systems, owning architectures end-to-end and providing technical leadership across the team. You will drive agentic and GenAI engineering, define AI architecture, lead model development, and tackle integration challenges with reliability, security and scalability at the forefront.

Join a cross-functional team to ship production-ready AI in enterprise environments, shape engineering standards, and influence

Competenze

• 6+ years of professional software engineering experience, including meaningful time shipping GenAI/LLM-powered systems in production
• Hands-on depth in agentic AI: reasoning loops, tool/function calling, multi-agent orchestration, and a considered point of view on when single-agent design beats multi-agent
• Practical RAG expertise: chunking strategies, embeddings, vector databases (OpenSearch or similar), cosine similarity search, and re-ranking
• Experience building evaluation and observability for LLM systems: golden datasets, LLM-as-judge, RAGAS or comparable metrics, and tracing tools like LangFuse/LangSmith

Mansioni

• Design and build agentic workflows — reasoning loops, tool/function calling, and orchestration across single- and multi-agent architectures
• Build and maintain RAG pipelines: chunking strategy, embeddings, vector search, re-ranking, and staleness/refresh handling
• Integrate with AWS Bedrock and Agent Core, including MCP-based tool design
• Write and iterate on production system prompts — structured role framing, output constraints, and few-shot design
• Build eval and observability into every agent you ship: golden datasets, LLM-as-judge, tracing via LangFuse/LangSmith
• Design for LLM failure, with retries, circuit breakers, fallback models, and user-facing degradation stories
• Build backend services in Python/Node.js, including serverless architectures
• Design DynamoDB single-table schemas for conversation state and memory
• Support event-driven orchestration (Step Functions, SQS, EventBridge) for reliability
• Contribute to frontend integration points and write clean, tested code
• Support deployment and production troubleshooting in cloud-native environments

Conoscenze

GenAI engineering

Python

Node.js

Observability

Strumenti

AWS Bedrock

Lambda

DynamoDB

OpenSearch

S3

Docker

LangFuse

LangSmith

Descrizione del lavoro

Robots & Pencils is seeking a Staff AI Builder to lead the design and delivery of AI/ML systems, owning architectures end-to-end and providing technical leadership across the team. You will drive agentic and GenAI engineering, define AI architecture, lead model development, and tackle integration challenges with reliability, security and scalability at the forefront.

Join a cross-functional team to ship production-ready AI in enterprise environments, shape engineering standards, and influence