Software Engineer

Fruition Executive Search; San Francisco (CA); On-site; USD 130,000 - 210,000; Full time

Job summary

Fruition Executive Search in San Francisco seeks an engineer to build full-stack AI systems for hospitality operations and guest communication. You will own retrieval, tool orchestration, response generation, and production reliability from the model-routing layer to the infra.

This is an agent-reliability role with real conversations, messy data, and third-party API failures. You will implement no-code controls, voice extension, and performance optimizations to ensure robust customer

Qualifications

• Proven track record shipping production systems used by real users.
• Full-stack capability to handle diverse problems.
• Experience building reliable retrieval pipelines.
• Strong evaluation discipline with impact measurement.

Responsibilities

• Design and build the response generation pipeline — routers, orchestrators, synthesizers that classify intent, assemble context, select tools, and decide whether to send or elevate.
• Develop knowledge retrieval that grounds responses in accurate, complete, current data despite messy inputs.
• Build tool orchestration layers that execute multi-step workflows reliably, with graceful handling of API failures mid-conversation.
• Create evaluation frameworks that measure quality against real conversations and catch regressions pre-customer.
• Implement observability and tracing that makes agent reasoning legible to non-technical support teams.
• Design no-code controls that let support leads adjust agent behavior.
• Extend the system to voice — real-time transcription and the same tool-use capabilities as text.
• Optimize speed and cost via model routing, caching, and prompt refinement.
• Own infra, data pipelines, integrations, and API work.

Skills

Full-stack development

Reliability engineering

System design

Job description

Full time | Fruition Executive Search | United States

Posted On 10/19/2026

Job Information

Technology

Work Experience 5+ years

$130K - $210K

City San Francisco

State/Province California

94105

Job Description

The build:Our client is building full-stack AI systems for hospitality operations and guest communication. As an engineer on a small team with end-to-end product ownership, you'll own retrieval, tool orchestration, response generation, and production reliability — from the model-routing layer down to the infra.

This is an agent-reliability role: real conversations, messy data, third-party APIs that fail mid-flow. You make it work anyway.

What you'll do

• Design and build the response generation pipeline — routers, orchestrators, synthesizers that classify intent, assemble context, select tools, and decide whether to send or elevate.
• Develop knowledge retrieval that grounds responses in accurate, complete, current data despite messy inputs.
• Build tool orchestration layers that execute multi-step workflows reliably, with graceful handling of API failures mid-conversation.
• Create evaluation frameworks that measure quality against real conversations and catch regressions pre-customer.
• Implement observability and tracing that makes agent reasoning legible to non-technical support teams.
• Design no-code controls that let support leads adjust agent behavior.
• Extend the system to voice — real-time transcription and the same tool-use capabilities as text.
• Optimize speed and cost via model routing, caching, and prompt refinement.
• Own infra, data pipelines, integrations, and API work.

Requirements

What we're looking for

• Proven track record shipping production systems real users depend on.
• Full-stack comfort — you pick up whatever the problem requires.
• Deep thinking about reliable retrieval pipelines.
• Pragmatism about models: frontier, fine-tuned, or simpler — whatever fits.
• Strong eval discipline; you measure impact on real conversations before shipping.
• Experience where your work directly shapes the product

Fruition Executive Search is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.