Darnel Castor
darnelcastor2@gmail.com | Github | Linkedin
Professional Experience
HeasdstarterSep 2026 - Feb 2026
Full-Stack Software Engineer
- Full-stack engineer on a cross-functional team of technical and non-technical contributors, building a multi-cloud platform for evaluating and comparing LLMs at scale.
OutlierMar 2025 - Present
AI Engineer
- Evaluated AI-generated code across Python, JavaScript, TypeScript, and Go, identifying runtime inefficiencies, logic bugs, and security vulnerabilities to cut errors by 30% and accelerate delivery of high-performing code-generation models.
- Engineered adversarial prompts and algorithmic test cases covering recursion, data structures, and dynamic programming, then benchmarked model outputs against human-verified reference solutions and unit tests to enforce strict performance and execution standards
- Reviewed, refactored, and annotated complex codebases, documenting precise technical feedback on code failures to produce high-quality training data for Reinforcement Learning from Human Feedback (RLHF) pipelines and teach the model optimized architectural patterns
OutreachJun 2022 - Aug 2022
Software Engineer Intern
- Software Engineer Intern on Outreach's Orchestration Services team building data pipeline infrastructure and optimizing legacy database services.
Projects & Outside Experience
AI Policy copilot
Education
Clayton State University
Bachelor's, Computer ScienceMorrow, GA
Certifications
- Generative AI: Prompt Engineering : Coursea - Apr 2026
- AWS Cloud Quest: Cloud Practitioner : Amazon Web Services Training and Certification - Mar 2026