[Remote] AI Engineer

Note: The job is a remote job and is open to candidates in USA. HubSync is an end-to-end platform for tax and audit firms, focusing on document management, workflow automation, and AI-powered document processing. They are looking for an experienced AI Engineer to help transform their platform into an AI-native system with agentic capabilities, focusing on backend engineering and production system delivery.ResponsibilitiesAgentic workflow orchestration. Multi-agent coordination across tax document workflows with human-in-the-loop oversight. Agent state machines, tool routing, context windowing, and retry semantics for processes that run for minutes or hoursDocument intelligence at scale. Production-grade pipelines that extract, classify, and validate tax forms and financial documents across dozens of formats and quality levelsWorkflow state management. State hydration for long-running agentic workflows, failure handling, checkpoint/resume, and recovery across distributed servicesEvaluation and observability. Task completion rates, accuracy attribution, cost tracking per action, regression detection. Attributing outcomes to specific agent reasoning steps when something goes wrongCost-accuracy optimization. Optimizing cost, accuracy, and latency trade-offs across different document types, complexity levels, and client tiers during peak tax season volumeTrust and reliability. Making non-deterministic agent output trustworthy for professionals who cannot accept errors. Supervision layers, validation rules, human review gatesSkills4+ years building and shipping backend systems in production environments where uptime and correctness matterA track record of delivering enterprise-grade features and products, from design through deployment and ongoing operationsDeep experience with relational databases: PostgreSQL or equivalent, schema design, query optimization, data modeling, migrationsHands-on work with event-driven architectures: message queues, async processing, distributed job executionProduction experience with AWS (Lambda, SQS, S3, ECS) or equivalent cloud platformsComfort reading and writing both TypeScript and Python (or the ability and willingness to pick up a second language quickly)Experience with the full software delivery lifecycle: design, implementation, testing, deployment, monitoring, and incident responseExposure to agentic systems, agent orchestration frameworks, or multi-agent workflow designFamiliarity with RAG architectures, vector databases, or document processing pipelinesExperience with multi-tenant SaaS architecture (schema isolation, tenant-scoped data, access control)Background in document intelligence: OCR, structured extraction from PDFs, form understandingOpen-source contributions, technical writing, or other public evidence of engineering depthCompany OverviewHubSync is an AI-powered, end-to-end tax and accounting workflow platform built exclusively for CPA firms. 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.