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I am a native Angolan Portuguese speaker with advanced English proficiency and certified language assessment scores. I contribute to AI data as a quality evaluator and annotator, with a track record on Upwork across Portuguese AI annotation, audio recording, and data quality projects, all rated 5 stars. I have a strong analytical background as a Computer Engineer, with expertise in structured evaluation, prompt design, and written communication. I am an Upwork Top Rated freelancer with a 100% Job Success Score, comfortable working independently in a remote, contractor-based environment with flexible scheduling.…I am a native Angolan Portuguese speaker with advanced English proficiency and certified language assessment scores. I contribute to AI data as a quality evaluator and annotator, with a track record on Upwork across Portuguese AI annotation, audio recording, and data quality projects, all rated 5 stars. I have a strong analytical background as a Computer Engineer, with expertise in structured evaluation, prompt design, and written communication. I am an Upwork Top Rated freelancer with a 100% Job Success Score, comfortable working independently in a remote, contractor-based environment with flexible scheduling.

Rodrigo Joaquim Lima

Data Annotator, QA Engineer, AI Engineer, +2

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I am a native Angolan Portuguese speaker with advanced English proficiency and certified language assessment scores. I contribute to AI data as a quality evaluator and annotator, with a track record on Upwork across Portuguese AI annotation, audio recording, and data quality projects, all rated 5 stars. I have a strong analytical background as a Computer Engineer, with expertise in structured evaluation, prompt design, and written communication. I am an Upwork Top Rated freelancer with a 100% Job Success Score, comfortable working independently in a remote, contractor-based environment with flexible scheduling.…I am a native Angolan Portuguese speaker with advanced English proficiency and certified language assessment scores. I contribute to AI data as a quality evaluator and annotator, with a track record on Upwork across Portuguese AI annotation, audio recording, and data quality projects, all rated 5 stars. I have a strong analytical background as a Computer Engineer, with expertise in structured evaluation, prompt design, and written communication. I am an Upwork Top Rated freelancer with a 100% Job Success Score, comfortable working independently in a remote, contractor-based environment with flexible scheduling.

Available to hire

I am a native Angolan Portuguese speaker with advanced English proficiency and certified language assessment scores. I contribute to AI data as a quality evaluator and annotator, with a track record on Upwork across Portuguese AI annotation, audio recording, and data quality projects, all rated 5 stars.

I have a strong analytical background as a Computer Engineer, with expertise in structured evaluation, prompt design, and written communication. I am an Upwork Top Rated freelancer with a 100% Job Success Score, comfortable working independently in a remote, contractor-based environment with flexible scheduling.

Skills

AI Data Labelling

Prompt Engineering

Audacity

Experience Level

AI Data Labelling

Expert

Prompt Engineering

Expert

Audacity

Intermediate

Language

Portuguese

Fluent

English

Advanced

Work Experience

IT Manager & Systems Analyst at Clincoord Angola | CEFAL | Privazer

January 1, 2019 - Present

Applied structured analytical thinking to diagnose system issues and evaluate technical solutions. Documented processes, procedures and evaluation rationales with clarity and precision. Communicated complex technical findings to non-technical stakeholders in clear written reports. Evaluated software and system performance against defined quality criteria.

Bilingual Research & Analytical Consultant at Upwork — International Research Clients

January 1, 2024 - Present

Conducted structured research and analysis projects requiring critical evaluation of complex information. Produced clear, concise written reports with explicit references to sources and evidence. Assessed information quality, identified inconsistencies and flagged ambiguous or unsupported claims. Maintained high analytical standards across multi-month research engagements — rated 5 stars.

Portuguese AI Data Annotator & Quality Evaluator at Upwork — Top Rated | 100% Job Success | International Clients

January 1, 2024 - Present

Completed Portuguese (Portugal) Data Annotation Project (Project Cmon) — evaluating and annotating AI-generated content for quality, accuracy and naturalness — rated 5 stars. Delivered multiple Portuguese audio recording projects for AI language model training datasets — praised for accuracy, responsiveness and deadline compliance. Provided detailed written feedback and structured rationales on AI language output quality. Evaluated bilingual Portuguese-English content for consistency, naturalness and grounding accuracy. Maintained strict data hygiene and documentation standards across all annotation projects. Designed and recorded native Portuguese sentence sets for LLM training — consistent 5-star client ratings.