# Kenfrey Jack

Kenfrey Jack is a remote worker on Himalayas, AI Trainer at Scale AI, based in United States.

Source: https://himalayas.app/@kenfreyjack

```text
AI Trainer at Scale AI evaluating LLM responses and refining prompts for model training and alignment.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | United States |
| Authorized to work in | United States |
| Salary expectations | 60k+ USD |
| Job categories | AI Trainer, AI Data Annotator, AI Quality Specialist |
| Skills | AI Training, RLHF, Prompt Engineering, AI Response Ranking, LLM Evaluation, AI Data Annotation, Data Labeling, Prompt Evaluation, Fact Checking, Internet Research, Content Moderation, Quality Assurance, Technical Writer, Large Language Models, English Editing |
| LinkedIn | https://linkedin.com/in/kenfreymwenda |

## What I'm looking for

```text
I'm seeking to contribute my expertise in AI training, RLHF, prompt engineering, response ranking, and LLM evaluation.
```

## About

```text
At Scale AI, I evaluate AI-generated responses for factual accuracy, reasoning quality, and instruction following, and rank model outputs against detailed guidelines. I also refine prompts and conduct RLHF evaluations to support model training and alignment.

At Invisible Technologies, I annotated text, image, and conversational datasets, then researched and fact-checked AI-generated content to identify hallucinations and policy violations. I also reviewed annotation quality before submission.

On my AI projects, I evaluated over 15,000 AI responses and designed over 1,000 prompts for ChatGPT, Claude, and Gemini. Earlier, at Royal Dust Removers Ltd, I designed branding and marketing materials and managed client projects.
```

## Experience

### AI Trainer (current)

[Scale AI](https://himalayas.app/companies/scale). Jan 2025 - Present

```text
Evaluate AI-generated responses for factual accuracy, reasoning quality, and instruction adherence, and rank model outputs according to detailed guidelines. Write and refine prompts to improve LLM performance and conduct RLHF evaluations to support model training and alignment.
```

Skills: AI-Training, RLHF, Prompt-Engineering, Response-Ranking, LLM-Evaluation, Fact-Checking, Quality-Assurance, Distributed-Teams

### AI Data Annotator

[Invisible Technologies](https://himalayas.app/companies/invisible-technologies). Jul 2023 - Dec 2024

```text
Annotated text, image, and conversational datasets to support machine learning model development and evaluation. Verified AI-generated content through research and fact-checking, identifying hallucinations, policy violations, and inconsistent outputs.
```

Skills: Data-Annotation, Fact-Checking, Quality-Assurance, Machine-Learning, Content-Moderation

### AI Quality Specialist

[Outlier AI](https://himalayas.app/companies/outlier-ai). Jan 2023 - Jun 2023

```text
Evaluated and compared AI model responses for quality, helpfulness, and factual accuracy to support performance assessment and improvement. Reviewed prompts and refined prompt engineering workflows to improve response quality and overall evaluation effectiveness.
```

Skills: AI-Evaluation, Prompt-Engineering, Quality-Assurance, Data-Annotation, Reporting

### Senior Graphic Designer

Royal Dust Removers Ltd. Jan 2021 - Dec 2022

```text
Designed digital marketing materials and branding assets that supported client marketing and brand communication goals. Managed multiple client projects simultaneously, ensuring timely delivery and consistent execution across assignments.
```

Skills: Graphic-Design, Branding, Project-Management, Client-Communication, Quality-Assurance

### Customer Service Assistant

Royal Dust Removers Ltd. Jan 2020 - Dec 2020

```text
Responded to customer inquiries professionally, delivering timely support and maintaining a high standard of customer service. Maintained accurate customer records and resolved issues efficiently to support customer satisfaction.
```

Skills: Customer-Service, Communication-Skills, Problem-Solving, Record-keeping

## Education

### Carnegie Mellon University

Master of Science, Artificial Intelligence

```text
Pursuing a Master of Science in Artificial Intelligence, expected to complete in May 2026.
```

### University of Washington

Bachelor of Science, Computer Science

```text
Completed a Bachelor of Science in Computer Science in June 2024.
```

### Ajira Digital

Certificate, Graphic Design

```text
Earned a Certificate in Graphic Design in August 2020.
```

## Tech stack

- Adobe Photoshop
- Slack
- Jira
- Google Workspace
- Notion
- Gemini
- Adobe Illustrator
- Canva
- ChatGPT

To contact Kenfrey, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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