Find remote AI training and data labeling jobs open to applicants in Bulgaria.
Create and review advanced math questions, logic problems, and written solutions used to train language models. This remote contract role requires strong English and 20+ hours per week.
Posted Jul 16, 2026
Evaluate AI model responses, write Python solutions, and create training data in a fully remote, one-month contractor assignment. Choose 20, 30, or 40 hours per week with Pacific Time overlap.
Posted Jul 16, 2026
Work remotely as a Data Scientist/Analyst evaluating AI models, ranking responses, building training datasets, and analyzing results with Python. Choose 20, 30, or 40 hours per week with Pacific Time overlap.
Posted Jul 16, 2026
Evaluate personalized AI responses in Portuguese by testing conversations, checking factual grounding, comparing outputs, and writing clear reasoning. This remote contractor role pays $15 per hour.
Posted Jul 15, 2026
Evaluate how a conversational AI model uses personal context in German. Create multi-turn prompts, compare responses, and document evidence-based judgments at $15 per hour for a three-month remote contract.
Posted Jul 15, 2026
Use Ubuntu/Linux to complete structured AI data training tasks, record your actions, and check your work for mistakes. This part-time role pays $10 to $20 per hour and is open to entry-level contributors.
Posted Jul 9, 2026
Review Bulgarian AI-generated content and QA work, guide trainers and reviewers, and improve project standards. This remote contractor role pays $25 per hour and requires 20+ hours per week.
Posted Jul 8, 2026
Review PDF and DOCX files, extract legal and financial information, and correct AI-generated JSON outputs against the source documents. This contract project pays $8 to $11.20 per hour for fewer than 20 hours each week.
Posted May 14, 2026
Review accounting and finance documents, correct OCR errors, label document regions, and structure tables and financial fields. Work 20 or more hours per week at $7 to $9 per hour.
Posted Apr 27, 2026
Rate image quality metrics and review image quality assessment tools in a photography-focused AI training project. Work 20 or more hours per week at $5-$7 per hour.
Posted Apr 15, 2026
Design computer science problems and evaluate AI-generated solutions using Python, structured scoring, and clear technical reasoning. This global contract role pays $15 to $40 per hour for up to 20 hours weekly during active project phases.
Posted Apr 5, 2026
Create and verify realistic, computationally intensive data science problems using Python, SQL, statistics, machine learning, and GenAI. This global contract offers flexible project work for experienced data science specialists.
Posted Apr 5, 2026
Create and verify computational machine learning and STEM problems using Python, statistics, SQL, and modern AI tools. This global, project-based contract pays $15 to $40 per hour for about 10 to 20 hours weekly during active phases.
Posted Apr 5, 2026
Evaluate AI systems working on infrastructure design, deployment, scaling, reliability, and DevOps automation. This worldwide contract role pays $15-$45 per hour and takes less than 20 hours per week.
Posted Mar 29, 2026
Build and review advanced automation workflows, JavaScript logic, and AI-generated solutions for APIs, webhooks, and business processes. Earn $15 to $45 per hour on a flexible, worldwide contract.
Posted Mar 29, 2026
Build and review API integrations that help train and evaluate AI systems. Work part time from anywhere on REST APIs, webhooks, data mapping, and error handling.
Posted Mar 29, 2026
Build and improve automation workflows powered by large language models. You will refine prompts, review model outputs, and create evaluation criteria for practical communication and content tasks.
Posted Mar 29, 2026
Use your n8n and self-hosted automation skills to write prompts, rate AI-generated workflows, and improve complex integrations. This flexible contract project pays $15 to $45 per hour and is open worldwide.
Posted Mar 29, 2026
Build, test, and improve Zapier and Make.com workflows used to train and evaluate AI systems. This part-time contractor role pays $15 to $45 per hour and is open worldwide.
Posted Mar 29, 2026
Create original, computationally intensive problem sets for quantitative finance and verify every solution in Python. This part-time contract pays USD 15 to USD 60 per hour.
Posted Mar 29, 2026
Create difficult, research-style computational statistics problems and verify fully reproducible solutions with Python. This worldwide contract role pays $15-$60 per hour and requires a degree.
Posted Mar 29, 2026
Design challenging biology research problems in bioinformatics, systems biology, or molecular modeling, then verify them with Python. This part-time contract pays $15 to $60 per hour based on project scope and complexity.
Posted Mar 29, 2026
Create research-level computational chemistry problems, verified solutions, and Python-based validation workflows. This part-time contractor role pays $15 to $60 per hour based on task complexity and expertise.
Posted Mar 29, 2026
Create challenging computational physics problems based on real research workflows, then write clear, reproducible Python solutions. This global, part-time contract role pays $15 to $60 per hour depending on project scope and complexity.
Posted Mar 29, 2026
Design challenging research-style mathematics problems, write clear solutions, and verify every answer in Python. This worldwide expert contractor role pays $15 to $60 per hour for less than 20 hours per week.
Posted Mar 29, 2026
Create realistic mechanical engineering problem sets and verify reproducible Python solutions using NumPy, Pandas, and SciPy. This part-time contract role pays $15 to $50 per hour.
Posted Mar 29, 2026
Create and verify original electrical engineering problems using Python, with work spanning system design, optimization, control, and power systems. This worldwide contract role pays $15 to $50 per hour and takes fewer than 20 hours per week.
Posted Mar 29, 2026
Create realistic civil and computational engineering problems, then verify solutions with Python and engineering libraries. This part-time contract pays $15 to $50 per hour and is open worldwide.
Posted Mar 29, 2026
Work globally as a Vibecode Specialist building Python scrapers for complex, JavaScript-heavy websites. Earn $20 per hour while delivering clean, validated datasets for AI training.
Posted Feb 26, 2026
Design realistic tests for AI agents, define expected behavior, and review model outputs. This part-time contract pays $18 to $24 per hour and requires 20 or more hours each week.
Posted Jan 13, 2026
AI training work helps prepare and review examples used by artificial-intelligence systems. Depending on the individual role, tasks may include labeling images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. The specific work available to applicants located in Bulgaria is defined by each live posting.
OpenTrain handles hiring for the public roles on OpenTrain, and candidates apply through OpenTrain. After a successful application, OpenTrain may place or refer the candidate to the client whose project they will support. The individual posting contains the authoritative information for that opportunity, including its eligibility and role-specific requirements.
