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Mercor
Backend Engineering Specialist
Posted 9 hours ago

This description is a summary of our understanding of the job description. Click on ‘Apply’ button to find out more.

Role Description

Mercor is partnering with a

leading AI research group

to engage experienced software engineers in a high-impact project focused on training and refining large language models (LLMs). As a

Software Engineering Specialist (Human Data Team)

, you’ll help shape the next generation of AI systems by curating advanced coding datasets, benchmarking model outputs, and enhancing model reasoning about programming practices.

This role involves:

  • Collaborating with technical teams to teach AI models how humans write, debug, and optimize code across multiple programming languages.
  • Annotating and evaluating AI-generated code for efficiency, scalability, and reliability, ensuring it meets enterprise-level software development standards.
  • Contributing data in text, voice, or video formats to help models learn from human expertise.

This is a

full-time role

for experienced engineers passionate about applying their coding and problem-solving skills to advance frontier AI systems.

Key Responsibilities

  • Curate code examples, provide detailed solutions, and make precise corrections across programming languages such as

    Python, JavaScript (including ReactJS), C/C++, Java, Rust, and Go

    .
  • Evaluate and refine AI-generated code, ensuring adherence to industry standards for efficiency, scalability, and reliability.
  • Collaborate with cross-functional teams to enhance AI-driven coding solutions and benchmark LLM performance.
  • Support training initiatives by improving annotation tools, workflows, and data quality.
  • Contribute to developing coding tasks and datasets that challenge model reasoning and technical understanding.

Qualifications

  • 5+ years of professional back-end development experience.
  • Proficiency in multiple server-side languages such as Python and Node.js.
  • Strong experience designing and implementing RESTful APIs and GraphQL endpoints.
  • Hands-on experience with both relational databases (PostgreSQL, MySQL) and non-relational databases (MongoDB, Redis).
  • Deep understanding of database optimization, indexing, and query performance.
  • Strong grasp of web security principles, including authentication, authorization, and data protection.
  • Experience with asynchronous processing and background job systems.
  • Proficiency with testing frameworks for unit, integration, and end-to-end testing.

Preferred Qualifications

  • Adaptable and detail-oriented professional with strong

    logical reasoning and problem-solving skills

    .
  • Experience with

    containerization technologies (Docker)

    .
  • Familiarity with

    front-end technologies

    such as TypeScript or React to facilitate effective cross-functional collaboration.

More About the Opportunity


  • Location:

    Remote or in-person (Palo Alto, CA); in-office requires 5 days/week.

  • Schedule:

    9:00am–5:30pm PST for the first two weeks; then aligned with your local timezone.

  • Technical requirements:

    Reliable high-speed internet connection, camera, and microphone for virtual collaboration.

  • U.S. applicants:

    Must reside outside of Wyoming and Illinois.

  • Visa sponsorship:

    Not available.

Compensation & Contract Terms


  • $45–100/hour

    for U.S.-based professionals, depending on experience and location.
  • International pay rates available upon request.
  • Classified as an

    independent contractor

    position.
  • Payments issued regularly for services rendered.
  • Hourly pay is part of a broader rewards structure; benefits vary by country.

Application Process

  • Submit your

    resume and statement of exceptional work

    .
  • Complete a

    15-minute screening interview

    .
  • If selected, proceed to:

    • A

      technical deep-dive

      discussing your software engineering and annotation experience.
    • A

      take-home coding or annotation challenge

      .
    • A

      team meet-and-greet

      with project collaborators.
  • The interview process is designed to be completed within

    one week

    .
About The Company

Status

Accepting Applications

Apply

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