Find remote AI training and data labeling jobs open to applicants in Croatia.
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 Croatian AI content and trainer QA submissions as a Team Lead, giving feedback and supporting language quality. This remote contractor role offers 20+ hours per week and up to $30/hour, with applications starting on OpenTrain.
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
Use Python and computer science expertise to design problems, validate AI-generated solutions, and score multi-step reasoning. This global, project-based contract pays $15 to $40 per hour.
Posted Apr 5, 2026
Use expert Python, SQL, statistics, machine learning, and GenAI skills to create and verify realistic data science problems. This global, project-based contractor role pays $15 to $40 per hour.
Posted Apr 5, 2026
Create and verify challenging computational machine learning and STEM problems using Python, statistics, SQL, and GenAI methods. This global contract role pays $40 per hour and requires 20+ hours weekly.
Posted Apr 5, 2026
Evaluate AI-generated infrastructure plans, DevOps runbooks, and troubleshooting guidance for reliability, scaling, uptime, and fault tolerance. This worldwide contractor role pays $15 to $45 per hour and requires 20+ hours weekly.
Posted Mar 29, 2026
Build and review advanced automation workflows, write JavaScript, and evaluate AI-generated solutions. This worldwide contract role pays $15 to $45 per hour and requires at least 20 hours each week.
Posted Mar 29, 2026
Help train and evaluate AI systems on API integrations, data mapping, and error handling. Build and review workflows connecting CRMs, ad platforms, email tools, and databases through REST APIs and webhooks.
Posted Mar 29, 2026
Build and improve automation workflows that use large language models. You will write prompts, review model outputs, and refine evaluation methods while working 20 or more hours each week.
Posted Mar 29, 2026
Build and evaluate complex self-hosted n8n workflows that help train AI systems to create reliable automations. This flexible global contract role pays $15 to $45 per hour and requires hands-on n8n experience.
Posted Mar 29, 2026
Build, test, and improve Zapier and Make.com workflows used to train and evaluate AI systems. This contract role pays $15-$45 per hour and requires 20+ hours each week.
Posted Mar 29, 2026
Create and verify advanced, computational problem sets for quantitative finance using Python. This part-time contract role pays $15 to $60 per hour and requires at least 20 hours each week.
Posted Mar 29, 2026
Design and validate challenging computational statistics problems using Python, then document reproducible solutions. This worldwide contractor role pays $15 to $60 per hour and requires a degree.
Posted Mar 29, 2026
Create and verify challenging biology research problems using Python, bioinformatics libraries, and reproducible validation steps. This part-time contract work suits intermediate biology experts with a required degree.
Posted Mar 29, 2026
Design research-grade computational chemistry problems, build verified solutions, and validate them with Python and computational chemistry libraries. This part-time contract pays $15 to $60 per hour based on task complexity.
Posted Mar 29, 2026
Create challenging, research-style computational physics problems in Python and produce clear, reproducible solutions. This global, part-time contract role pays $15 to $60 per hour and requires research experience and fluent English.
Posted Mar 29, 2026
Create challenging, research-style mathematics problems and verify every answer with Python. This worldwide contract role offers $15 to $60 per hour and requires 20 or more hours each week.
Posted Mar 29, 2026
Create realistic mechanical engineering problem sets and fully verified Python solutions. This worldwide, part-time contract role pays $15 to $50 per hour and requires 20 or more hours each week.
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
Design realistic civil and computational engineering problems, then verify their solutions with Python. This part-time contract role pays $15 to $50 per hour and requires 20 or more hours each week.
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
Transcribe short Korean recordings for $14 per hour in a long-term, part-time role with about one flexible hour of work each day. You will also review audio and flag unclear segments.
Posted Jan 7, 2026
Transcribe short French audio recordings, verify unclear segments, and label unusable audio for $15 per hour. This ongoing contract offers about one flexible hour of work each day.
Posted Jan 7, 2026
Create and verify Python-based mechanical engineering problems that help train and evaluate AI models. This flexible contract role pays $10-$45 per hour and requires advanced English, Python, and relevant engineering expertise.
Posted Dec 12, 2025
Design and verify complex Python and SQL problems that test full-pipeline data science skills for advanced AI systems. This worldwide contractor role pays $50 per hour for fewer than 20 hours per week.
Posted Dec 3, 2025
AI training and data labeling work uses human judgment to prepare and review examples for artificial-intelligence systems. Depending on the individual role, this can include annotating images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. For applicants located in Croatia, each posting determines whether the opportunity is available and what the work involves.
OpenTrain is the hiring organization for roles published on OpenTrain, including remote roles that explicitly accept applicants located in Croatia. Candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support. The individual live posting is the source of truth for eligibility and client-specific requirements.
