Onesmus K.

Key Skills

Software

Don't disclose

Top Subject Matter

Swahili AI / LLM response evaluation and RLHF training datasets

AI language training and evaluation

Prompt engineering and model output safety/quality

Top Data Types

Text

Computer Code Programming

Document

Top Task Types

Prompt + Response Writing (SFT)

Freelancer Overview

Data Annotator (PRP Writer Analyst) — Outlier AI. Core strengths include Don't disclose, Handshake AI, and OpenAI. Education includes Bachelor of Human Resource Management, The Kenya Institute Of Management (2024) and Certification In Human Resource Professionals, Human Resource Management Professionals Education Board (2024). AI-training focus includes data types such as Text and labeling workflows including Prompt + Response Writing (SFT), Evaluation, and Rating.

Labeling Experience

AI Language training — Handshake AI

Text

Perform AI language training and ongoing quality scoring across assigned projects. Maintain consistent output quality scoring to support reliable dataset or model improvement workflows. Apply evaluation practices to ensure outputs meet agreed quality standards. • Maintain consistent output quality score across projects. • Conduct model evaluation and data annotation tasks. • Support prompt engineering activities for better responses. • Ensure outputs align with project expectations and guidelines.

2026 - Present

Data Annotator (PRP Writer Analyst) — Outlier AI

Don't discloseTextPrompt + Response Writing (SFT)

Create and write Prompt–Response–Preference (PRP) pairs to train and fine-tune large language models (LLMs). Evaluate model-generated responses for accuracy, tone, safety, helpfulness, and policy compliance as part of the dataset quality process. Apply RLHF-style ranking and comparison workflows to provide structured feedback for improved model performance. • Write PRP pairs for LLM training and fine-tuning. • Rate and flag responses for safety, helpfulness, accuracy, and policy adherence. • Rank and compare outputs using RLHF methodologies. • Collaborate with the AI community to share quality guidance and iterate on instructions.

2025 - Present

AI Prompt Engineer — OpenAI

TextPrompt + Response Writing (SFT)

Create detailed prompt instructions that guide AI models to produce accurate, relevant, and safe responses. Focus on prompt engineering to improve the quality and consistency of model outputs for downstream use. Support controlled production behavior by targeting specific model snapshots. • Craft specific instructions for accurate and safe AI responses. • Ensure relevance and coherence in generated outputs. • Manage production applications using selected model snapshots. • Contribute prompt engineering work for consistent user experiences.

2025 - 2025

Education

Work History