Contractor Backend Engineering Specialist

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.

This role involves:

• Collaborating with technical teams to teach AI models how humans write, debug, and optimize code.
• Annotating and evaluating AI-generated code for efficiency, scalability, and reliability.
• Contributing data in text, voice, or video formats to help models learn from human expertise.

This is a full-time role for experienced engineers.

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.
• Experience with asynchronous processing and background job systems.
• Proficiency with testing frameworks.

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.

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