HOAi · 3 days ago
Senior / Staff Backend Engineer - AI Agents Platform (Vertical SaaS)
Redwood City, CA
Full-time
Onsite
Senior Level, Lead/Staff
6+ years expHOAi is building a large-scale, highly reliable platform for vertical AI agents. The Senior / Staff Backend Engineer will own backend systems that ensure agent dependability in production, focusing on core services, API design, data modeling, and platform reliability.
Computer Software
Responsibilities
Own core backend services powering agents : build and operate the agent runtime services (tool execution, state management, orchestration, retries, idempotency, rate limiting)
Design robust APIs and contracts : develop stable, well-versioned APIs (internal + external), including webhook/event interfaces and integration adapters
Model complex domain data : design schemas and data access patterns that support agent memory/state, workflow history, audit trails, permissions, and multi-tenant isolation
Integrations at scale : implement and maintain high-quality integrations (OAuth, webhooks, sync engines, connectors) with strong observability and failure handling
Reliability engineering : define and improve SLIs/SLOs, implement end-to-end tracing, build safety rails (timeouts, circuit breakers, budgets), and run incident response
Platform performance and cost control : optimize throughput/latency, queue backlogs, caching, storage, and inference/tool-call costs; build guardrails for runaway tasks
Raise engineering standards : drive code quality, testing strategy, on-call hygiene, runbooks, postmortems, and mentoring
Qualification
Required
6+ years building backend systems for production SaaS, platforms, or distributed systems
Strong fundamentals in distributed systems, concurrency, queues/workers, caching, and production operations
Excellent relational modeling (Postgres/MySQL), migrations, indexing, query optimization, and data correctness
Proven ability to design clear, evolvable APIs and contracts across services and external partners
You thrive in fast-moving environments without sacrificing reliability or security
You enjoy ambiguous problems, learn quickly, and take systems end-to-end (build → ship → operate)
Preferred
Building product with LLMs (prompting, tool calling, evals, latency/cost tradeoffs)
Orchestration patterns, planning/execution loops, memory/state, sandboxed tool execution, human-in-the-loop, safety constraints
Vercel AI SDK, LangChain/LangGraph, Anthropic Agents SDK, OpenAI tool calling, sandboxing/tool runtimes
Company
HOAi
HOAi is the leading AI solution for the community association management industry, enabling organizations to deploy AI Agents that function like experienced managers.
11-50 employees
Funding
Current Stage
Early StageCompany data provided by crunchbase