I’m Japhter Osei, a motivated and detail-oriented professional based in Accra, Ghana. I have hands-on experience in AI data labeling and annotation across image, text, and audio, where I focus strongly on accuracy, consistency, and meeting project deadlines. I also bring experience in supervision and customer service, supporting smooth team operations and high-quality delivery. I’m passionate about practical AI applications and responsible AI use, including AI prompting and productivity tools that help me work efficiently. I continuously improve through training and certifications, and I enjoy collaborating with teams to solve annotation and quality challenges while staying committed to learning and growth.

JAPHETER OSEI

I’m Japhter Osei, a motivated and detail-oriented professional based in Accra, Ghana. I have hands-on experience in AI data labeling and annotation across image, text, and audio, where I focus strongly on accuracy, consistency, and meeting project deadlines. I also bring experience in supervision and customer service, supporting smooth team operations and high-quality delivery. I’m passionate about practical AI applications and responsible AI use, including AI prompting and productivity tools that help me work efficiently. I continuously improve through training and certifications, and I enjoy collaborating with teams to solve annotation and quality challenges while staying committed to learning and growth.

Available to hire

I’m Japhter Osei, a motivated and detail-oriented professional based in Accra, Ghana. I have hands-on experience in AI data labeling and annotation across image, text, and audio, where I focus strongly on accuracy, consistency, and meeting project deadlines. I also bring experience in supervision and customer service, supporting smooth team operations and high-quality delivery.

I’m passionate about practical AI applications and responsible AI use, including AI prompting and productivity tools that help me work efficiently. I continuously improve through training and certifications, and I enjoy collaborating with teams to solve annotation and quality challenges while staying committed to learning and growth.

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Language

English
Fluent
Twi
Advanced

Work Experience

Data Labeler (Freelance) at Aya Data Company Limited
January 1, 2026 - Present
Worked on AI data annotation projects using defined workflows and tools. Completed image, text, and audio labeling tasks with strong attention to accuracy and consistency. Prioritized meeting project requirements and deadlines while maintaining quality standards.
Data Labeler at Aya Data Company Limited
January 1, 2024 - Present
Freelance AI data labeling support, working with annotation workflows and tools to label image, text, and audio data. Focused on accuracy and consistency while meeting project requirements and deadlines, collaborating with the team to maintain quality standards across deliverables.
Data Labeler at Datamaker Ghana Limited
March 1, 2023 - March 1, 2024
Performed AI data annotation and labeling tasks for large-scale datasets. Ensured outputs matched project specifications and quality requirements by maintaining accuracy and consistency throughout the work.
Supervisor at Waakye Guy Guy
February 1, 2022 - June 1, 2023
Managed daily operations and supervised staff to maintain service quality. Supported efficient team performance through coordination, oversight, and practical day-to-day problem solving.

Education

Diploma in Business Administration at Lister Professional Institute
January 1, 2016 - January 1, 2018
WASSCE, General Arts at Pacesetter High School
January 1, 2013 - January 1, 2016
Diploma in Business Administration at Lister Professional Institute
January 1, 2016 - January 1, 2018
WASSCE, General Arts at Pacesetter High School
January 1, 2013 - January 1, 2016
Diploma in Business Administration at Lister Professional Institute
January 1, 2016 - January 1, 2018
WASSCE, General Arts at Pacesetter High School
January 1, 2013 - January 1, 2016

Qualifications

Data Annotation / Labeling Certification (Datamaker Certification: QZ24XH9)
January 1, 2024 - September 1, 2026
Google/Coursera - Introduction to AI
May 11, 2026 - September 1, 2026
Google/Coursera - Discover the Art of Prompting
May 13, 2026 - September 1, 2026
Google/Coursera - Maximize Productivity With AI Tools
May 12, 2026 - September 1, 2026
Google/Coursera - Use AI Responsibly
May 15, 2026 - September 1, 2026
Google/Coursera - Stay Ahead of the AI Curve
May 15, 2026 - September 1, 2026
Google/Coursera - (AI Prompting / Productivity / Responsible AI learning series)
January 1, 2026 - September 1, 2026
GIMPA Christian Fellowship - Certificate of Appreciation
January 11, 2030 - September 1, 2026
La Plage Meta Verse - Certificates
January 11, 2030 - September 1, 2026
Alison - Crew Management in Multi-Pilot Aircraft
January 11, 2030 - September 1, 2026
Use AI Responsibly
May 15, 2026 - September 1, 2026
Stay Ahead of the AI Curve
May 15, 2026 - September 1, 2026
Discover the Art of Prompting
May 13, 2026 - September 1, 2026
Maximize Productivity With AI Tools
May 12, 2026 - September 1, 2026
Introduction to AI
May 11, 2026 - September 1, 2026
Certificate of Appreciation (GIMPA Christian Fellowship)
January 11, 2030 - September 1, 2026
Datamaker Certification (QZ24XH9)
January 11, 2030 - September 1, 2026
La Plage Meta Verse Certificates
January 11, 2030 - September 1, 2026
Crew Management in Multi-Pilot Aircraft (Alison)
January 11, 2030 - September 1, 2026
Use AI Responsibly
May 15, 2026 - September 1, 2026
Stay Ahead of the AI Curve
May 15, 2026 - September 1, 2026
Discover the Art of Prompting
May 13, 2026 - September 1, 2026
Maximize Productivity With AI Tools
May 12, 2026 - September 1, 2026
Introduction to AI
May 11, 2026 - September 1, 2026
Certificate of Appreciation (GIMPA Christian Fellowship)
January 11, 2030 - September 1, 2026
Datamaker Certification (QZ24XH9)
January 11, 2030 - September 1, 2026
La Plage Meta Verse Certificates
January 11, 2030 - September 1, 2026
Crew Management in Multi-Pilot Aircraft (Alison)
January 11, 2030 - September 1, 2026

Industry Experience

Software & Internet, Education, Professional Services, Computers & Electronics, Media & Entertainment