Stephen Adenipekun

Results-driven and detail-oriented professional with over five years of experience in data annotation, content creation, customer support, copywriting, ghostwriting, and virtual administrative assistance. Proven ability to deliver accurate, high-quality written communication across multiple digital platforms while efficiently managing competing priorities and deadlines. Experienced in providing remote support, handling data entry and documentation tasks, and producing engaging content across diverse industries and subject areas.

Recognized for strong organizational skills, accuracy, adaptability, and a commitment to delivering exceptional results in fast-paced environments.

Freelance Writer & Ghostwriter at Freelance (2020-01 – Present)

• Developed engaging written content including blog posts, articles, website content, eBooks, scripts, and social media material.
• Ghostwrote long-form content across multiple niches including health, lifestyle, and education.
• Produced plagiarism-free, SEO-optimized work with adaptable tone and style.
• Assisted clients with editing, proofreading, formatting, and document preparation.
• Managed multiple writing projects with fast turnaround time and high client satisfaction.

Virtual Assistant at Freelance (2024-01 – Present)

• Managed emails, calendars, schedules, and general administrative tasks.
• Performed accurate data entry, spreadsheet organization, and document creation.
• Created and scheduled social media content using basic designs on Canva.
• Handled customer inquiries through chat, email, and messaging platforms.
• Maintained professionalism, confidentiality, and reliable task execution.

Data Annotation Specialist at Appen (2024-01 – 2025-01)

• Annotated text, image, and audio datasets for machine learning training.
• Ensured strict adherence to project guidelines with high accuracy.
• Conducted quality assurance checks and collaborated on guideline improvements.
• Used annotation tools including SageMaker Ground Truth and custom platforms.

Freelance Data Annotator at Upwork, SimplyHired, Freelancer.com (2020-01 – 2025-01)

• Delivered large-scale annotation projects for clients in various industries such as e-commerce and healthcare.
• Maintained exceptional accuracy with thorough documentation of processes.
• Worked closely with clients to ensure full understanding of requirements.
• Completed multiple projects simultaneously while meeting deadlines.

Atomic Action Labeler at Atlas Capture (2025-01 – Present)

• Contributed to human-in-the-loop AI training, providing structured feedback and labeled data used to improve model accuracy and alignment.
• Evaluated and validated annotated outputs to ensure factual accuracy, consistency, and compliance with project guidelines.
• Supported AI model improvement workflows aligned with RLHF principles, emphasizing precision, clarity, and observable evidence.

B.Sc in Software Engineering – Miva Open University