RM
Open to opportunities

Ruth Mangisa

@ruthmangisa

Detail-oriented AI Data Trainer and Game Tester with creative skills.

Malawi

What I'm looking for

I am looking for opportunities that foster creativity and collaboration, where I can contribute to innovative projects and enhance user experiences.

I am a detail-oriented and creative AI Data Trainer and Game Tester with over four years of experience in data annotation, monitoring and evaluation, and project coordination. My expertise lies in evaluating AI models, video annotation, and immersive content testing. I am passionate about storytelling, gaming, and enhancing user experience in both AI and gaming environments.

Throughout my career, I have proven my ability to deliver high-quality structured data and content while working in remote, fast-paced teams supporting leading platforms like uTest, Toloka, and Mindrift. My role as an AI Data Trainer at Invisible Technologies involved annotating and reviewing AI-generated content, ensuring narrative consistency and context accuracy. I also created video captions and original descriptions, providing valuable feedback in both technical and creative contexts.

As a Freelance Game Tester, I have tested pre-release games for functionality and playability, reported bugs, and evaluated narrative coherence. My experience as a Data Officer at TRUE involved managing datasets for public health research, drafting reports, and ensuring ethical data handling. I am also actively engaged in creative projects, including designing an interactive fiction prototype that explores AI-human relationships.

Experience

Work history, roles, and key accomplishments

UM
Current

Freelance Game Tester

uTest, Toloka, Mindrift

Jan 2023 - Present (2 years 5 months)

Tested pre-release games for functionality, playability, and consistency across devices, reporting bugs and UI/UX issues using platform-specific tools. Evaluated dialogue, storyline, and game mechanics for narrative coherence and participated in training simulations to assess AI responsiveness.

IT

AI Data Trainer & Video Captioning Trainer

Invisible Technologies

Nov 2022 - Mar 2025 (2 years 4 months)

Annotated and reviewed AI-generated content, ensuring narrative consistency, tone alignment, and context accuracy. Evaluated model outputs using structured rubrics to improve machine understanding and created video captions and original written descriptions for diverse video content.

TE

Data Officer

TRUE (Training and Research Unit of Excellence)

Feb 2020 - Jul 2024 (4 years 5 months)

Managed and validated datasets for public health research projects, drafting statistical and narrative reports for stakeholders. Ensured ethical standards in data handling and processing, while supporting field data teams with digital tool usage and technical issues.

Education

Degrees, certifications, and relevant coursework

DU

DMI St. Eugene University

Bachelor of Science, Information Technology

AE

ABMA Education

Advanced Diploma, Project Management

PC

Polytechnic College

Diploma, Information Technology

Tech stack

Software and tools used professionally

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Ruth Mangisa - Freelance Game Tester - uTest, Toloka, Mindrift | Himalayas