Backend Engineering Specialist

About xAI

xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

About the Role

As a Software Engineering Specialist on the Human Data team, you’ll create cutting-edge datasets for training, benchmarking, and advancing large language models, collaborating closely with technical staff. You’ll support xAI’s mission by teaching AI models about human interactions, reactions, and problem-solving approaches through labeling and annotating data in text, voice, and video formats. This includes curating code examples, providing precise solutions, and making corrections in Python, JavaScript (including ReactJS), C/C++, Java, Rust, and Go; evaluating and refining AI-generated code for efficiency, scalability, and reliability; and working with cross-functional teams to enhance enterprise-level AI-driven coding solutions. Tasks may involve gathering or providing data, such as recording audio or video sessions, with which candidates must be comfortable to drive innovation.

Key Responsibilities

• AI model training initiatives by curating code examples, offering precise solutions, and meticulous corrections in Python, JavaScript (including ReactJS), C/C++, Java, Rust and Go.
• The Back-End Specialist will focus on any and all Enterprise aspects, as listed in ‘Required Qualifications’ section.
• Evaluate and refine AI-generated code, ensuring it adheres to industry standards for efficiency, scalability, and reliability.
• Collaborate with cross-functional teams to enhance AI-driven coding solutions, ensuring they meet enterprise-level quality and performance benchmarks.

Required Qualifications

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

Preferred Qualifications

The ideal candidate for this role is adaptable and…