Machine Learning Engineer — AI Agent Platform
Virtuos China
Computer Games · 201-500 employees
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About the role
You will build and improve AI agent platforms, including orchestration, tool execution loops, and multi-step workflow management. Additionally, you will develop secure backend services and responsive frontend interfaces to deliver integrated enterprise solutions.
What they look for
Requirements
The role requires 5+ years of professional software development experience with strong proficiency in Python, TypeScript, and modern web frameworks. Candidates must have hands-on experience with LLM tool calling, workflow orchestration, and building reliable, secure enterprise-grade applications.
Full description
Responsibilities
- Agent platform and orchestration• Build and improve agent harnesses, including model and tool execution loops, context management, and structured outputs.
- Implement multi-step workflows with clear execution boundaries, task state, asynchronous dispatch, and human approval where needed.
- Enterprise systems and integrations• Develop reusable tools and connectors for enterprise APIs, webhooks, and services, with clear input and output contracts.
- Handle data mapping, user authorization, rate limits, and integration errors; document dependencies with system owners.
- Full-stack product delivery• Design Python backend services, secure REST APIs, and PostgreSQL data models for agent and workflow features.
- Build responsive web interfaces for task progress, user confirmations, and results using TypeScript and modern frontend frameworks.
- Security and reliability• Protect credentials, preserve user access boundaries across systems, and apply appropriate execution isolation and audit logging.
- Improve concurrency control, retries, idempotency, cancellation, and recovery; trace failures across model calls, tools, and workers.
- Quality and collaboration• Maintain automated and integration tests, CI/CD, and agent evaluations covering task success, output quality, latency, and cost.
Work with product, design, IT, SRE, and business system owners; contribute code reviews, documentation, and technical guidance.
Qualifications
- 5+ years of professional software development experience, including delivery of production applications across backend and frontend.
- Strong Python skills with FastAPI or similar frameworks, asynchronous programming, REST APIs, SQLAlchemy/Pydantic or equivalent tooling, and PostgreSQL data modeling.
- Hands-on experience with LLM tool calling, agent execution, or workflow orchestration; practical examples explaining design decisions, context and state management, and failure handling.
- Experience integrating enterprise or third-party systems, including API contracts, data mapping, pagination, rate limits, and retries.
- Understanding of OAuth 2.0/OIDC, authorization, role-based access control, and secure credential handling in applications.
- Ability to build reliable asynchronous workflows using task state, concurrency control, idempotency, and recovery from partial failures.
- Proficiency in TypeScript and Vue or React, including routing, state management, and reusable components. Vue 3 is preferred; willingness to adapt is essential.
- Experience with automated and integration testing, Git, CI/CD, and Docker; ability to troubleshoot using logs and metrics and evaluate agents against representative tasks.
- Clear communication with global, cross-functional teams and the ability to explain technical tradeoffs to non-technical stakeholders.
Nice to have
- Experience extending agent harnesses, SDKs, or orchestration frameworks such as LangGraph, LangChain, or custom implementations.
- Development of MCP servers, connectors, plugins, or SDKs; integrations with Microsoft Graph, Teams, SharePoint, Jira, ERP, or similar systems.
- Experience with long-running workflows, human approval, durable task state, recovery, or agent evaluation frameworks.
- Hands-on cloud deployment and operations experience, preferably AWS; familiarity with caching, queues, NoSQL databases, or vector search.
- Electron development or plugins for desktop and productivity applications.
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