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Sema4.aiSema4.aiAtlanta, GA

Staff Engineer, Agentic Backend

Builds production backend systems for enterprise AI agent platform, turning LLM/agent capabilities into reliable, scalable features with execution engines, orchestration, and observability. Requires 7+ years Python backend experience and hands-on with agent systems.

Salary not listed
Hybrid7+ YOEBackend Engineering

About the role

Responsibilities

  • Build product-grade agent infrastructure: execution engines, workflow orchestration, tool invocation frameworks, document processing systems, database interfaces, authentication and authorization, and lifecycle management.
  • Turn AI capabilities into features: agent behaviors, configuration models, execution semantics, and observability surfaces.
  • Own reliability, scale, and operability: handling retries, partial failures, long-running workflows, cost controls, and performance tradeoffs.
  • Shape the platform surface area: influence API design, data models, and internal contracts.
  • Contribute to technical leadership: design reviews, code reviews, set engineering standards, and mentor engineers.

Requirements

  • 7+ years of backend software engineering experience in production systems.
  • Deep experience building backend services in Python, including performance, reliability, and observability.
  • Hands-on experience with LLM- or agent-based systems, especially orchestration, tools, or workflow execution.
  • Strong product and systems thinking.
  • Strong communication skills.
  • High-ownership mindset.

Skills

PythonLLMsAgent SystemsWorkflow OrchestrationBackend ServicesObservabilityAuthenticationAuthorizationAPI DesignDatabase Interfaces
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