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Senior backend Engineer - Java

California - San Francisco, US💼 Full-time💰 $148,500–$148,500🗓 2026-09-18 → 2026-09-25

Core

Design and build a core agent framework, define contracts for reusable agent skills, and build evaluation infrastructure for AI agents handling product setup and configuration.

Role type

Lead Software Engineer (Backend/Agent Framework)

Builds

Core agent framework, reusable skills ecosystem, evaluation infrastructure

Domain

AI Agents, Agentic Workflows, CRM

Deliverable

production ML models | product features

Required skills

distributed backend systems design, API design and versioning, modern programming languages, large scale system reasoning, AI-first engineering, prompt engineering, code review

Preferred skills

AI agents/LLM systems experience, evaluation infrastructure for non-deterministic outputs, retrieval systems (semantic search/catalogs), migrating automation to composable APIs

Technologies

AI tools (Claude Code, GitHub Copilot, Codex, Cursor), semantic search, structured data catalogs

Responsibilities

Design and build a core agent framework that orchestrates sub tasks; Define contracts for reusable agent skills focusing on API design and composability; Build evaluation infrastructure to measure agent quality and catch regressions; Help agents find records using structured queries and semantic search; Critically evaluate code for correctness, security, and performance

Seniority

Senior, hands-on IC with leadership responsibilities

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