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Kasyfu Najib

@kasyfunajib

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Freelance AI data annotator specializing in prompt engineering and multimodal evaluation.

Indonesia

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What I'm looking for

I’m looking for AI-data and language-evaluation work where I can apply prompt engineering, LLM assessment, and multimodal labeling with clear rubrics, consistent quality standards, and room to grow into higher-scope evaluation roles.

I’m a freelance AI data annotator focused on turning multimodal raw data—images, text, and audio—into high-quality labels that help train machine learning models. I bring a strong quality mindset rooted in Inter-Annotator Agreement (IAA) discipline and careful adherence to dynamic, project-specific guidelines.

In my work across Outlier, Appen, Toloka, Clickworker, Crowgen, and Mindrift, I specialize in prompt engineering and LLM response evaluation, assessing AI outputs for accuracy, coherence, relevance, and safety. I provide detailed written feedback to improve natural language understanding and ensure consistency with complex rubrics.

I also handle image annotation tasks such as image classification and bounding boxes, plus text-focused evaluations including text categorization, sentiment analysis, and content moderation. For search-focused projects, I perform search relevance evaluation and support e-commerce and search-engine related AI training.

Alongside this, I have a practical technical foundation from Computer and Network Engineering studies, including MikroTik routing knowledge. I’m highly adaptable, collaborate well across teams, and balance technical precision with strong communication—qualities proven through previous retail, barista, and sales-promotion experiences.

Experience

Work history, roles, and key accomplishments

Current

Freelance AI Data Annotator

Current

Outlier

Jan 2026 - Present (6 months)

Performed prompt engineering and evaluated LLM responses for accuracy, coherence, relevance, and safety using complex project rubrics. Provided detailed written feedback and maintained high inter-annotator agreement (IAA).

Prompt Engineering Quality Assurance Inter Annotator Agreement Safety Coherence and Relevance Evaluation Natural Language Understanding

Current

Freelance AI Data Annotator

Current

Appen

Jan 2026 - Present (6 months)

Completed image classification and bounding box annotation for e-commerce-related AI and search relevance tasks. Followed project-specific guidelines and maintained quality through high inter-annotator agreement (IAA).

Bounding Boxes Search Relevance Quality Assurance Inter Annotator Agreement

Current

Freelance AI Data Annotator

Current

Toloka

Jan 2026 - Present (6 months)

Performed image classification, bounding box annotation, and search relevance evaluation for AI models used in e-commerce and search/SEO contexts. Maintained strict adherence to dynamic guidelines and high inter-annotator agreement (IAA).

Bounding Boxes Search Relevance Quality Assurance Inter Annotator Agreement

Current

Freelance AI Data Annotator

Current

Clickworker

Jan 2026 - Present (6 months)

Handled audio transcription, text categorization, sentiment analysis, and content moderation tasks for AI training datasets and UHRS projects. Maintained high inter-annotator agreement (IAA) while adapting to changing task requirements.

Audio Transcription Sentiment Analysis Content Moderation Quality Assurance Inter Annotator Agreement

Current

Freelance AI Data Annotator

Current

Crowgen

Jan 2026 - Present (6 months)

Completed audio transcription and multiple NLP annotation tasks including text categorization, sentiment analysis, and content moderation for commercial AI training data and UHRS. Maintained consistent quality and high inter-annotator agreement (IAA) across assignments.

Audio Transcription Sentiment Analysis Content Moderation Quality Assurance Inter Annotator Agreement Multitask Annotation

Current

Freelance AI Data Annotator

Current

Mindrift

Jan 2026 - Present (6 months)

Specialized in prompt engineering and LLM response evaluation, assessing AI outputs for accuracy, coherence, relevance, and safety based on detailed project rubrics. Delivered written feedback and consistently met high inter-annotator agreement (IAA) requirements.

Prompt Engineering LLM Evaluation Safety Coherence and Relevance Evaluation Quality Assurance Inter Annotator Agreement Natural Language Understanding

Education

Degrees, certifications, and relevant coursework

SMK Al Mahrusiyah Ngampel

Vocational High School Diploma, Computer and Network Engineering (TKJ)

Vocational High School graduate in Computer and Network Engineering (TKJ), completing studies in 2024. Relevant coursework included network infrastructure, routing & switching (MikroTik), and basic programming.