Full Stack Engineer

We're working with a highly innovative company that is at the forefront of improving AI agents through human feedback. This organization collaborates with leading AI entities to train Large Language Models (LLMs) to function as proactive, multi-step agents, focusing on complex, real-world architectural workflows.The Role Help train generative AI models and shape the future of autonomous agents Develop objective, verifiable criteria (rubrics) to evaluate system performance Review system logs and 'trajectories' to refactor code and improve execution paths Test systems for vulnerabilities, including improper data exposure and unauthorized accessWhat You'll Need 2+ years of experience in backend engineering, AI automation, or complex systems integration Proven ability to build and maintain production-grade software with modular separation Strong command of at least two major languages (e.g., Python, JavaScript, Go, or Java) Experience working with SQL databases and building for live, non-mocked environments Outstanding attention to detail and ability to provide clear, high-density technical feedbackWhat's On Offer Fully remote freelance role with flexible hours Competitive hourly rates up to $50 per hour for core project work Additional incentives averaging 7.5% through 'Missions' Opportunity to contribute to cutting-edge AI developmentApply via Haystack today!