Most In Demand STEM Jobs Brazil (Remote, Full-Time)

About the job Overview Rex.zone highlights the most in-demand STEM roles for teams building modern AI systems, including work tied to LLM training pipelines, RLHF evaluation, prompt evaluation, QA evaluation, and data labeling. Roles are Remote and FULL_TIME, typically Mid-Senior level. In-demand roles you may match Machine Learning Engineer Data Engineer Software Engineer Cloud Engineer Cybersecurity Engineer Computer Vision Engineer NLP Engineer Common Responsibilities (vary By Role) Build and operate production systems for AI/ML delivery and evaluation Improve model performance through data-centric iteration and offline/online metrics Support LLM evaluation loops (rubric scoring, QA evaluation, prompt evaluation) Partner with labeling teams/vendors to ensure annotation guidelines compliance Harden reliability, observability, security, and cost controls in cloud environments About AI/ML Workflow Alignment These roles often intersect with RLHF, evaluation pipelines, content safety labeling, NER, CV annotation, and dataset quality practices to improve training data and model outcomes. Desired Skills and Experience Machine Learning, LLM Evaluation, RLHF, Prompt Evaluation, Data Labeling, Python, MLOps, Data Pipelines, Cloud Infrastructure, Kubernetes