Outlier Ai - Senior Full Stack Engineer AI Trainer

Full Stack Developer is needed in Missouri, United States.

Client: Outlier Ai

Location: Missouri

Contract: Contract, Freelance

Job Description

Outlier helps the world’s most innovative companies improve their AI agents by providing human feedback. The company collaborates with leading AI organizations to train Large Language Models (LLMs) to function as proactive, multi-step agents, focusing on teaching these systems how to design, coordinate, and optimize complex, real-world architectural workflows.

This freelance role is fully remote and offers flexible hours, allowing contributors to work whenever it fits their schedule. Outlier is looking for skilled software experts to help train generative AI models.

Requirements

We’re looking for people with the following qualifications:

• 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 (e.g., distinct services for data parsing, logic processing, and reporting).
• Strong command of at least two major languages (e.g., Python, JavaScript, Go, or Java) and experience working with SQL databases.
• Practical experience building for live, non-mocked environments and handling multi-turn system interactions.
• Outstanding attention to detail and the ability to provide clear, high-density technical feedback on complex system behaviors.

Nice to have:

• Expertise in building multi-stage coordination tasks where data acquisition leads to reasoned output.
• Hands-on experience integrating agents with live tools such as Supabase, Gmail, and various APIs to solve real-world problems.
• High level of comfort implementing persistent state and session discovery using MEMORY.md to track agent progress.
• Experience identifying subtle failures like privacy leaks, authority escalation, or indirect prompt injections.

Other Information

Payment:

• Project work: Earn up to USD $50 per hour for core project work.
• Additional incentives: On average, Outlier Contributors earn an additional 7.5% on top of core project rates. The top quartile of contributors boost their earnings by an average of 11%.
• Rates vary based on expertise, skills assessment, location, project need, and other factors. Higher rates may be offered to PhDs. For non-core work, lower rates apply.

Please note: This is a 1099 contract opportunity on the Outlier.ai platform, and we do not offer internships, sponsorship, or employment. You must be authorized to work in your country of residence.