HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Build the ML and AI search behind HiringCafe — ranking, recommenders, retrieval, and LLM agents that surface jobs people would never find on their own.
AI Engineer/ML Engineer - Senior Developers - AI Training - Tucson, US
Tucson or United States
$80/hrRemoteContract
Prolific: Platform connecting researchers and AI developers with verified participants.
BS/MS/PhD in CS/AI/Robotics or related quantitative field; production ML experience; deep learning mastery (Transformers, CNNs, RNNs); LLM workflows (Prompt Engineering, RLHF, RAG); strong analytical critique and auditing skills.
Rincon Research Corporation: Designs high-performance digital signal processing solutions for defense missions
8+ YOEBachelor's degree in engineering/computer science/math,8+ years in signals intelligence or related analysis,TS/SCI clearance,AI/ML and data engineering experience,proficiency with Python/SQL/R and DevOps practices.
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
12+ YOE12+ years applying AI/ML to deliver production systems, experience with LLMs, secure MLOps/DevSecOps, cloud and embedded deployment, and ability to obtain TS/SCI clearance (U.S. citizenship required).
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
4+ YOEMinimum Secret clearance, DoD 8140/8570 IAT Level II certification prior to start, 4+ years deploying and configuring Elastic Stack for security/logging, experience with Elastic SIEM, Ansible Playbook, and REST API integration.
Areté: Develops advanced sensing and signal processing solutions for national security.
2+ YOEBS (minimum) in STEM, experience in signal/image processing, computer vision or ML; programming in Python, C, C++, or MATLAB; ability to obtain and maintain TS/SCI clearance; U.S. citizenship and background/DOT drug screening required.