AI Developer

About the role

Rex.zone is seeking AI Developers to create and implement production-level AI systems and workflows for training large language models. This role encompasses the entire process from data ingestion to deployment and monitoring.

Key facts

What you'll do

• Develop and maintain AI services for both batch and real-time processing while integrating model inference APIs.
• Construct data pipelines for training and evaluation that include versioning, validation, and quality assurance checks.
• Establish automated evaluation processes for large language models, focusing on prompt quality and safety regressions through offline metrics and human reviews.
• Assist with natural language processing and computer vision tasks, including classification, summarization, ranking, named entity recognition, and content moderation.
• Keep detailed documentation of experiments and advocate for reproducible machine learning engineering practices.

Requirements

• Mid to senior-level experience in producing AI/ML-driven products that are deployed in a production environment.
• Proficient in Python with a solid understanding of software engineering principles, including APIs, testing, continuous integration and delivery, and code reviews.
• Practical knowledge in machine learning and deep learning, particularly with large language models, natural language processing, or computer vision.
• Capable of designing evaluation strategies and utilizing findings to enhance model performance.
• Familiarity with data labeling processes, quality assurance evaluations, and adherence to annotation guidelines.

Nice to have

• Experience with reinforcement learning from human feedback, preference modeling, prompt iteration, or feedback loops involving human input.
• Knowledge of MLOps practices related to deployment, monitoring, and experiment tracking.
• Background in retrieval-augmented generation, vector search, and embedding pipelines.
• Experience in content safety labeling, red-teaming, or evaluations aligned with policy standards.

Compensation

Competitive hourly wage ranging from $30 to $50, based on experience and the scope of work.

How To Apply

To apply, visit Rex.zone and submit your resume, emphasizing your experience with deployed AI systems, evaluation outcomes, and any relevant work with reinforcement learning from human feedback, labeling processes, or quality assurance evaluations.

Please include links to any repositories, case studies, or technical documentation where applicable.