Staff Engineer, Agentic Backend jobs in United States
cer-icon
Apply on Employer Site
company-logo

Sema4.ai · 23 hours ago

Staff Engineer, Agentic Backend

Sema4.ai is building an Enterprise AI Agent platform that changes how knowledge work is done. As a Staff Backend Engineer on the Agent Platform, you will work with the AI team to build production systems and features that turn cognitive architectures into customer-facing functionality.

Artificial Intelligence (AI)Generative AISoftwareWeb Development

Responsibilities

Design and implement the backend systems that make agents usable in production: execution engines, workflow orchestration, tool invocation frameworks, document processing systems, database interfaces, authentication and authorization, and lifecycle management
Work closely with the AI team to consume new cognitive primitives and turn them into concrete, shippable functionality: agent behaviors, configuration models, execution semantics, and observability surfaces that customers can rely on
Ensure agent-powered systems behave predictably under load and over time. This includes handling retries, partial failures, long-running workflows, cost controls, and performance tradeoffs
Influence API design, data models, and internal contracts to ensure the platform remains cohesive as it grows. You’ll help prevent accidental complexity and keep the system understandable and evolvable
Participate in design reviews and code reviews, help set engineering standards, and mentor other engineers. You’ll act as a force multiplier across the product engineering organization

Qualification

Backend software engineeringPythonLLM-based systemsPerformance optimizationReliability engineeringObservabilityCommunication skillsHigh-ownership mindset

Required

7+ years of backend software engineering experience in production systems
Deep experience building backend services in Python, including performance, reliability, and observability concerns
Hands-on experience working with LLM- or agent-based systems, especially orchestration, tools, or workflow execution
Strong product and systems thinking: you understand how technical decisions show up in user experience
Strong communication skills: whether you're talking to colleagues, customers, or machines, you communicate clearly, concisely, and collaboratively
A high-ownership mindset: you care deeply about the systems you build, and you take responsibility for their long-term health

Company

Sema4.ai

twittertwitter
company-logo
Sema4.ai is an AI platform that empowers organizations to build, deploy, and manage agents designed to transform knowledge work.

Funding

Current Stage
Growth Stage
Total Funding
$55.5M
2025-06-04Series A· $25M
2024-01-29Series A· $30.5M

Leadership Team

leader-logo
Paul Codding
Co-Founder, SVP of Product and Customer Experience
linkedin
leader-logo
Ramachandran Venkatesh
CTO, Co-founder
linkedin
Company data provided by crunchbase