Member of Technical Staff, Agentic Systems

Job summary

Responsibilities

As a Member of Technical Staff on Talent Experience, you'll build the backend systems and agent infrastructure behind every journey in Mercor's talent network.

• Design, build, and own the backend services powering Mercor's agentic workflows—orchestration, tool calling, retries and fallbacks, and human-in-the-loop review.
• Ship agents into production and iterate on them against real usage: prompts, tools, guardrails, and cost and latency tradeoffs.
• Build the evaluation infrastructure that tells us whether an agent is actually working—offline evals, online metrics, and regression detection.
• Design core services, data models, and APIs that scale with the talent network and stay legible as agent behavior changes underneath them.
• Make agent decisions observable, auditable, and reversible—so failures are caught early and understood quickly.

What they're looking for

• 5+ years of professional backend engineering experience.
• Strong fundamentals in distributed systems, service architecture, data modeling, and API design at scale.
• Hands-on experience building with LLMs in production—agents, tool use, retrieval, or evaluation systems—or a clear track record of learning new systems fast and shipping them.
• Comfort with ambiguity: agent systems fail in ways traditional services don't, and the right design is rarely obvious upfront.
• A track record of owning systems end to end, from design through production operation.