Mercor
Fullstack Engineer, RL Environments
San Francisco · Senior
Sponsorship not specifiedDetected 28 days ago
JavaScriptTypeScriptPythonReactNext.jsNode.jsBackend DevelopmentFull-Stack DevelopmentRESTData EngineeringLLMsDesign SystemsCommunicationCollaboration
About the role
- Studio is one of Mercor's highest-priority initiatives.
- This is a role for someone who cares equally about engineering craft and product impact: shipping scalable, reliable systems and intuitive interfaces that make everyone who touches Studio faster and more effective.
- Ship high-leverage product features that improve throughput and quality across our core data generation and delivery pipelines.
Responsibilities
- We partner with leading AI labs and enterprises to provide the human intelligence essential to AI development.
- Own the Studio platform across the full stack - from contributor-facing and operator-facing React interfaces to the backend APIs and pipelines driving data ingestion, QA review, and AI lab delivery.
- Lead engineering best practices across the team, setting the bar for frontend architecture, component design, and performance, and establishing patterns that others can build on reliably.
- Build the foundational layer that other teams depend on to support new data types, task formats, and customer configurations quickly and without rework.
- Translate ambiguous requirements into well-scoped technical solutions through close collaboration with Applied AI researchers, product, design, and operations.
- The systems you build will be used daily by thousands of experts and operators.
- You'll also build and maintain the foundational layer that Mercor depends on to rapidly deploy new data types and task formats across the company.
- Four distinct stakeholders - AI labs, SPLs, expert contributors, and engineers- rely on what you build.
Requirements
- Deep proficiency in JavaScript/TypeScript (React + Next.js) and a strong grasp of frontend architecture, state management, and design patterns.
- Experience with complex, high-throughput systems - pipelines, large data volumes, or multi-tenant architectures.
- Strong communication skills and ability to articulate technical and product tradeoffs clearly.
- Experience at top-tier tech companies or fast-scaling startups.
Compensation
- Bi-annual performance bonus structure
Benefits
- Bi-annual performance bonus structure
- Generous equity grant vested over 4 years
- Up to $15k Relocation bonus
- $10K proximity bonus (if you live within 0.5 miles of our office)
- $1.5K monthly stipend for meals
- $200 monthly laundry reimbursement
- $200 monthly personal wellness reimbursement
- Health, Dental, Vision insurance
Company info
- 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 $3 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.
- Mercor's mission is to organize human intelligence to power the AI economy.
This listing is sourced directly from Mercor's careers page and normalized into a canonical job model.