Tech Lead-Machine Learning Engineer (Agent & Multi-Agent Systems) – AIGC Risk Intelligence
TikTok · Seattle, Washington, United States of America
About The Role
Our team is building the next generation of AI-native risk intelligence systems to address emerging challenges driven by large-scale AIGC content production.
As content creation becomes automated and adversaries adopt systematic experimentation (e.g., large-scale template variation and rapid iteration), traditional rule-based and single-model approaches are no longer sufficient. We are transitioning from monolithic LLM applications to a structured multi-agent architecture that emphasizes:
Tool-augmented reasoning (ReAct-style systems)
Modular skill composition
Execution traceability and observability
Feedback-driven system evolution
Cross-domain risk reasoning
We are seeking an experienced technical leader to define and implement this architecture.
Responsibilities
- Architect and Implement Agent Systems
- Design structured agent workflows (e.g., Evaluate → Validate → Reflect → Summarize)
- Implement ReAct-style tool allocation and reasoning frameworks
- Develop short-term and long-term memory architectures
- Ensure robustness under adversarial and evolving conditions
- Lead Multi-Agent Architecture Development
- Design orchestration layers for coordinating vertical domain agents
- Build modular Skill systems for extensibility and reuse
- Define execution graph standards and planning abstractions
- Establish traceability mechanisms for debugging and auditability
- Develop Open Risk Detection Capabilities
- Architect systems capable of identifying previously unseen risk patterns
- Implement execution trace–driven optimization loops
- Translate feedback signals (FP/FN, reviewer overrides, drift signals) into system improvements
- Enable proactive rather than purely reactive detection systems
- Establish Engineering Standards for Agent Systems
- Define traceability, observability, and guardrail requirements
- Evaluate and integrate multi-agent frameworks where appropriate
- Ensure production-readiness, scalability, and reliability
- Provide Technical Leadership
- Own the technical roadmap for Agent and multi-agent systems
- Partner cross-functionally with Risk, Safety, Infra, and ML teams
- Mentor engineers and drive architectural rigor
Minimum Qualifications
- 5+ years of experience in software engineering or applied AI systems
- Deep understanding of LLM-based agent architectures (ReAct-style reasoning/Tool calling systems/Workflow orchestration/Memory design patterns)
- Experience designing distributed or modular AI systems
- Strong backend engineering skills (Python or equivalent)
- Experience operating systems in adversarial or high-stakes environments
Preferred Qualifications
- Experience in trust & safety, risk detection, or adversarial ML
- Familiarity with multi-agent orchestration frameworks
- Experience building systems with execution trace logging and observability
- Background in RL-style policy optimization or iterative system refinement
- Demonstrated experience leading high-impact technical initiatives
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