© 2026 Ekemini Mendie
I specialise in Reinforcement Learning from Human Feedback (RLHF) and AI alignment, evaluating, ranking and annotating large language model outputs to make models safer, more helpful and better at following instructions. I bring 10+ years of software engineering across fintech, security and AI-powered products, so I can review complex code generation, multi-turn dialogue and reasoning tasks in depth.
Name: Ekemini Joshua Mendie
Address: Uyo, Akwa Ibom State, Nigeria
Preference ranking and comparative evaluation of LLM responses (GPT-4, Claude, Gemini-class models) to generate reward model training signals for RLHF fine-tuning. Evaluate outputs against rubrics for accuracy, safety, instruction-following and helpfulness, red-team for harmful outputs and jailbreaks, review LLM-generated code in Python, JavaScript and TypeScript, and curate SFT datasets. Maintain 95%+ annotation accuracy with high inter-annotator agreement.
Lead technology strategy for a live fintech platform; architected and delivered longswipe.com with Next.js and PCI-DSS compliance. Built a Flutter mobile app with biometric authentication and secure payment integrations, set up CI/CD with GitHub Actions and Vercel, and integrated AI features using LangChain and the GPT API.
Built the AI-powered risk assessment platform Sisu with Next.js and Claude AI, the Give.org charitable giving platform with AI chatbot and fraud detection, and led frontend engineering for the mesopotamia.ai financial analytics platform. Designed React/TypeScript component systems adopted across 3 product lines, cutting UI development time by 30%, and mentored junior engineers.
Engineering across KYC/AML compliance systems, secure payment platforms, identity verification, fraud detection and government technology for U.S. and Nigerian markets. Delivered Trueowner (KYC verification), Truecheka (compliance monitoring), eventpermit (secure payment e-ticketing), shutlips.com (end-to-end encrypted communication) and newagefoodmarket (marketplace with payment processing).
Bachelor of Science in Computer Science, Virgen Milagrosa University, Philippines
Bachelor of Science in Information Technology, University of Middlesex, Mauritius
Advanced Diploma in Software Engineering (ADSE), Aptech Computer Education, Calabar. Graduated with Distinction
RLHF specialist and senior software engineer based in Uyo, Nigeria. I combine hands-on LLM evaluation, red-teaming and prompt engineering with expert JavaScript/TypeScript, React and Next.js engineering. Open to full-time, part-time and contract RLHF / AI annotation and engineering roles (remote).
Have a role, project or collaboration in mind? Send me a message and I'll get back to you.
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