Member of Technical Staff, Backend at Mercor | CA, US | Rezi

Member of Technical Staff, Backend at Mercor

Member of Technical Staff, Backend

Mercor · CA, US

1 months ago

Member of Technical Staff, Backend

Mercor · CA, US

2 months ago
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About the Role

As a Member of Technical Staff of talent experience, you'll own the shared backend architecture that underpins every user journey for talent network at Mercor. You will define the technical direction of core services, data models, APIs, and infrastructure patterns that must scale with a network of tens of thousands of experts and the demands of the world's leading AI labs. This is a hands-on technical leadership role where you'll write code, review designs, and partner with engineering leadership.

Responsibilities

  • Own the architecture of Mercor's shared backend systems—core services, data models, APIs, and cross-product infrastructure.
  • Define and drive the long-term technical strategy for backend architecture across the organization.
  • Design systems for scale, reliability, and evolvability, and lead the highest-stakes technical decisions and design reviews.
  • Identify and pay down architectural debt that slows product teams, and lead complex cross-team migrations.
  • Establish backend engineering standards, patterns, and best practices adopted across all product teams.
  • Stay hands-on: prototype critical systems, ship production code, and unblock teams on their hardest technical problems.
  • Mentor senior engineers and raise the technical bar across the engineering organization.
  • Partner with engineering and product leadership on build-vs-buy decisions, platform investments, and technical hiring.

Requirements

  • 8+ years of professional backend engineering experience, including 3+ years operating at a Senior level or above.
  • Deep expertise in distributed systems, service architecture, data modeling, and API design at scale.
  • A track record of owning architecture across multiple teams or an entire organization—and of decisions that aged well.
  • Experience leading large, complex technical migrations in production without stopping the business.
  • Strong opinions, loosely held: you drive alignment through technical judgment and clear writing, not authority.
  • Fluent in using modern AI development tools (e.g. Cursor, Claude Code, GitHub Copilot, or similar) to improve engineering productivity.
  • Experience mentoring senior engineers and raising the technical bar across an organization.
  • Excellent communication skills—able to make complex tradeoffs legible to both engineers and leadership.
  • High ownership, pragmatism, and a bias toward shipping.

Skills

  • distributed systems
  • service architecture
  • data modeling
  • API design
  • modern AI development tools

Location

  • San Francisco
  • NYC
  • London

Work Type

  • in-person five days a week

Experience Level

  • Senior level or above

Benefits

  • Generous equity grant vested over 4 years
  • $20K relocation bonus (if moving to the Bay Area)
  • $10K housing bonus (if you live within 0.5 miles of our office)
  • $1.5K monthly stipend for meals
  • Free Equinox membership
  • Health insurance

About the Company

  • Mercor's mission is to organize human intelligence to power the AI economy.
  • We're a leading AI data company, building the layer between human expertise and frontier models.
  • Millions of domain experts on the platform are paid over $4 million per day to train frontier AI models.
  • Mercor's APEX benchmark family measures AI's real-world impact on professional work.
  • Mercor Enterprise brings this same infrastructure to Fortune 500 companies: helping companies capture how their best people actually work, translating that expertise directly back into agents.
  • Mercor is creating a new category of work where expertise powers AI advancement.
  • Achieving this requires an ambitious, fast-paced and deeply committed team.
  • You’ll work alongside researchers, operators, and AI companies at the forefront of shaping the systems that are redefining society.
  • Mercor is a profitable Series C company valued at $10 billion.