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Member of Technical Staff, Agentic Systems

Mercor· Engineering
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San Francisco$0Full-timePosted 1mo ago

About the role

Role focused on building backend systems and agent infrastructure for Mercor's talent network, designing and shipping production-grade agent workflows, evaluation, and observability at scale.

Responsibilities

  • 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.
  • Partner with product, operations, and AI researchers to decide what should be an agent, what should stay deterministic, and where a human belongs in the loop.
  • Establish backend engineering standards and patterns, and raise the technical bar of the engineers around you.

Qualifications

  • 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.
  • Fluent in using modern AI development tools (e.g. Cursor, Claude Code, GitHub Copilot, or similar) to improve engineering productivity.
  • Strong opinions, loosely held: you drive alignment through technical judgment and clear writing, not authority.
  • Excellent communication skills—able to make complex tradeoffs legible to both engineers and leadership.
  • High ownership, pragmatism, and a bias toward shipping.

Skills

Required:Backend engineeringDistributed systemsLLMs in production / agent systemsAPI designCommunication
Nice to have:Observability / auditing

Benefits

  • Generous equity grant vested over 4 years
  • A $20K relocation bonus (if moving to the Bay Area)
  • A $10K housing bonus (if you live within 0.5 miles of our office)
  • A $1.5K monthly stipend for meals
  • Free Equinox membership
  • Health insurance
Last updated Sep 16, 2026. Interested? Apply on the company site.

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