Engineering Manager, Core Engineering

About Mercor

Mercor's mission is to organize human intelligence to power the AI economy. We partner with leading AI labs and enterprises to provide the human intelligence essential to AI development. Our vast talent network trains frontier AI models in the same way teachers teach students: by sharing knowledge, experience, and context that can't be captured in code alone. Today, more than 30,000 experts in our network collectively earn over $2 million a day.

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. We work in-person five days a week in our San Francisco, NYC, or London offices.

About the Role

We’re hiring Engineering Managers to lead teams across Mercor’s core product and infrastructure surfaces.

Mercor is at an inflection point. We’ve proven we can build systems that scale supply and deliver real value to customers. Now, we are expanding that foundation into a fully liquid, two-sided marketplace—while continuing to strengthen the infrastructure that powers it.

As an Engineering Manager, you will own a critical slice of this system—whether that’s marketplace growth, core platform infrastructure, financial systems, or matching and fulfillment. Regardless of domain, the mandate is the same:

Build systems that scale, teams that execute, and products that materially move the business forward.

This is not a maintenance role. You will operate in an environment with high ambiguity, high velocity, and real consequences—where the systems you build directly impact revenue, trust, and marketplace liquidity.

What You’ll Work On

Own business-critical systems end-to-endLead the development of products and infrastructure that directly impact Mercor’s core marketplace—ranging from growth and demand generation to payments, trust, and fulfillment systems.

Build from zero-to-one and scale from one-to-manySome problems will require rapid experimentation and iteration; others will require designing robust, reliable systems that operate at global scale.

Drive execution in high-ambiguity environmentsTranslate open-ended problems into concrete plans. Balance speed with quality while maintaining a high bar for outcomes.

Build and lead high-performing teamsHire, mentor, and develop engineers who operate with ownership and urgency. Create a culture of accountability without unnecessary process.

Partner cross-functionally to ship outcomesWork closely with product, operations, finance, and other teams to ensure engineering work translates into real-world impact.

Introduce structure where neededHelp Mercor scale from a fast-moving startup into a durable organization—adding the right level of process without slowing down execution.

Stay close to the codeContribute to technical design and, when needed, implementation—especially in early-stage or high-priority systems.

Design scalable, reliable systemsArchitect systems that handle high throughput, real-time decisioning, and global usage—while maintaining correctness and trust where it matters.

What We’re Looking For

Strong technical backgroundYou can design and reason about complex, scalable systems and guide teams through high-stakes technical decisions.

Proven engineering leadershipExperience managing and growing teams in high-growth or ambiguous environments.

Builder mindsetComfortable going from zero-to-one on systems, teams, or processes. You default to action and iteration.

Ability to operate at high velocityYou can prioritize ruthlessly, make decisions quickly, and execute without perfect information.

Product and business intuitionYou understand how engineering work translates into user outcomes, revenue, and marketplace dynamics.

Experience with high-scale or high-stakes systems This could include payments, marketplaces, growth systems, trust & safety, or real-time data systems.

Strong communication skillsAble to clearly articulate trade-offs and align engineering decisions with broader company goals.

Why Mercor

Learn at the frontier of AI and laborWork alongside top engineers, operators and AI companies shaping the future.

Work on a problem that mattersYou’re not optimizing marginal gains—you’re helping rebuild how global labor markets function.

Own meaningful parts of the systemYour work will directly impact how millions of dollars flow and how thousands of people find work.

Build defensibility through network effectsIn a world where software is increasingly commoditized, you’ll help build what can’t be cloned: a liquid, global marketplace.

Operate with speed and ownershipSmall teams, high trust, real responsibility.

Benefits

• Equity ownership in a high-growth, profitable company

• Relocation support to San Francisco, NYC, or London as needed

• Housing support near the office

• Daily meal support

• Premium fitness membership (Equinox)

• Comprehensive health insurance