Barack Dastan
@barackdastan
I evaluate and annotate multimodal AI data, improving LLM quality through RLHF and Python validation.
TanzaniaWhat I'm looking for
I've annotated and verified 30,000+ multimodal image, video, and text samples at Atlas Capture, supporting AI research and LLM development with RLHF-style ranking, prompt evaluation, and rigorous quality assurance.
I build Python and JSON validation scripts that reduced manual review time by approximately 30%, while identifying edge cases and inconsistencies that improve model-output quality. My work spans CVAT, Label Studio, Labelbox, Roboflow, Polygon.ai, computer vision annotation, structured-text validation, and multi-turn AI safety review workflows.
As a native Swahili speaker, I've contributed 240+ linguistic data episodes through CrowdGen by Appen and evaluated AI language content for accuracy, relevance, fluency, and context. I also founded Legacy WealthBuilders, where I teach 1,030+ learners about blockchain, digital assets, risk management, and market analysis.
Experience
Work history, roles, and key accomplishments
Financial Domain Specialist
Enterprise Operations
May 2025 - Present (1 year 3 months)
Filed income tax returns with zero penalties, reviewed payroll for 70+ employees, and approved TZS 500M+ in payments.
Blockchain & Digital Asset Expert
Legacy WealthBuilders
Aug 2023 - Present (3 years)
Founded and managed a blockchain and digital asset academy serving 1,030+ learners, delivering training and developing educational content.
Data Quality & Content Review Specialist
Freelance
Feb 2023 - Present (3 years 6 months)
Audited institutional datasets for accuracy and compliance, resolved discrepancies, and produced reports to communicate quality metrics.
AI Data Annotation & Evaluation Specialist
Atlas Capture
Feb 2022 - Present (4 years 6 months)
Annotated and verified 30,000+ multimodal samples, evaluated AI-generated responses, and executed RLHF workflows. Built Python and JSON validation scripts to reduce manual review time by 30%.
Swahili Linguistic Data Contributor
CrowdGen by Appen
Jan 2020 - Jul 2026 (6 years 6 months)
Completed 240+ linguistic data episodes for Swahili language development and evaluation, maintaining 85% accuracy.
AI Data Contributor
Outlier
Apr 2026 - Jun 2026 (2 months)
Completed 100+ AI-related tasks involving language and data evaluation, achieving a 4.2/5 review rating.
Swahili Language Teacher
Unknown
May 2019 - Nov 2020 (1 year 6 months)
Taught Swahili language to 240 Form Four students, achieving a 91.7% A-C pass rate.
Education
Degrees, certifications, and relevant coursework
Institute of Accountancy Arusha (IAA)
Bachelor of Accountancy, Accountancy with Information Technology
Pursuing a Bachelor of Accountancy with Information Technology (BA-IT) degree, expected to complete in July 2026.
Tech stack
Software and tools used professionally
Availability
Location
TanzaniaAuthorized to work in
Job categories
Skills
Interested in hiring Barack?
You can contact Barack and 90k+ other talented remote workers on Himalayas.
Message BarackGet matched with your dream remote job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
