Note: The job is a remote job and is open to candidates in USA. HubSync is building the AI platform for the tax and accounting profession. As a Staff AI Engineer, you will be a technical leader for the Halo platform, responsible for setting architectural direction and ensuring the reliability of the systems being built, while also directly contributing to the design and development of key components.
Responsibilities
• Set architectural direction for how we build agentic systems
• Define the patterns and guardrails the rest of the AI engineering team builds on
• Accountable for the reliability and trustworthiness of what we ship
• Design and build the hardest parts of the system
• Define the orchestration patterns the team reuses
• Own the durable run-record and state layer that makes long-running agents auditable and resumable
• Set the architecture for accuracy, coverage, and the validation layer that turns raw extraction into output a firm can trust
• Stand up the eval and observability discipline as a platform capability
• Own the standard for making non-deterministic agent output trustworthy for professionals
• Optimize the trade-offs across document types, complexity levels, and client tiers during peak tax-season volume
Skills
• 8+ years building and shipping backend systems in production environments where uptime and correctness matter, including several years operating them
• A track record of leading the design of complex, distributed, or high-scale systems from architecture through deployment and ongoing operations, with enterprise-grade features that users depend on today
• Hands-on production experience with agent orchestration frameworks (LangGraph or equivalent) and long-running, stateful, multi-step agentic workflows. You will set the orchestration and state patterns the team builds on, so you need to have shipped this class of system, not just read about it
• Demonstrated technical leadership beyond your own commits: setting patterns and standards, driving cross-team or cross-functional initiatives, mentoring engineers, and influencing decisions across an organization
• Deep experience with relational databases (PostgreSQL or equivalent): schema design, query optimization, data modeling, and migrations
• Hands-on work with event-driven architectures: message queues, async processing, and distributed job execution
• Production experience with AWS (Lambda, SQS, S3, ECS) or an equivalent cloud platform
• Comfort reading and writing both TypeScript and Python, or clear evidence you pick up a second language fast
• Experience across the full software delivery lifecycle: design, implementation, testing, deployment, monitoring, and incident response
• Sound judgment on build versus buy, and the ability to make and defend architectural trade-offs under real time and cost constraints
• Depth in multi-agent coordination specifically: designing supervision, routing, and hand-off between multiple cooperating agents
• Familiarity with RAG architectures, vector databases, or document processing pipelines
• Experience with multi-tenant SaaS architecture: schema isolation, tenant-scoped data, and access control
• Background in document intelligence: OCR, structured extraction from PDFs, and form understanding
• Experience standing up evaluation, observability, or quality systems for ML or LLM products (offline and online eval, regression detection, cost and accuracy attribution)
• Work in a regulated or high-trust domain (tax, finance, legal, healthcare) where output correctness is non-negotiable
• Open-source contributions, technical writing, or other public evidence of engineering depth
Company Overview
• HubSync is a software company that develops an AI-powered workflow automation platform for CPA firms and accounting practices. It was founded in 2019, and is headquartered in Franklin, Tennessee, USA, with a workforce of 51-200 employees. Its website is https://hubsync.com.