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Remote AI training and data labeling jobs in Croatia

Looking for remote AI training or data labeling work open to applicants located in Croatia? OpenTrain is the hiring organization, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they support. Review each posting because eligibility and role details can differ.

  • 100% remote
  • Flexible hours
  • Hourly / per-task pay
  • 6 open roles

Ruby Developer, AI/LLM Training (Remote, Long-term)

Join OpenTrain AI as a Ruby developer to write and debug Ruby code used to train generative AI models; long-term, remote work with flexible hours. $7/hr, 20–40 hours/week, 6+ months; applicants complete a Ruby coding assessment after applying.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $7/hr

Posted Apr 17, 2025

Male Native French (France) Android Voice Recording

Short, entry-level audio task: record 100–150 French sentences on an Android phone (about 1 hour) and earn $17.50/hr as a contractor. Submissions are reviewed for authentic male native French (France) pronunciation; only accepted recordings are paid.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $17.5/hr

Posted Apr 3, 2025

PDF Structuring & Annotation Specialist (C1/C2 English)

Work remotely as a part-time contractor annotating PDF documents: draw bounding boxes, transcribe English text exactly, describe figures, and convert tables to JSON. Entry-level friendly with C1/C2 English required; $7/hr, under 20 hrs/week.

General Annotation
Document
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $7/hr

Posted Mar 31, 2025

Spanish Audio Transcription Specialist (Mexico, Argentina)

OpenTrain AI is hiring native Spanish speakers in Mexico or Argentina to transcribe and label spoken audio for an ongoing project. Remote, part-time contractor work at $6.50/hr with a required commitment of at least 1 hour/day, Monday–Friday, for 1+ year.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $6.5/hr

Posted Mar 28, 2025

Male Native Italian Speakers for Android Voice Recording

Paid short voice recording for male native Italian (Italy) speakers with an Android phone: record 100–150 short sentences (~1 hour) and earn $17.50/hour; authentic pronunciation will be reviewed before payment.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $17.5/hr

Posted Mar 28, 2025

Native English Voice Recorders (Android Only, Short Project)

Record 100–150 short sentences on an Android phone (about one hour) for a paid audio-collection task open to native UK or US English speakers; pay is $42/hour. Each participant may submit once and recordings are verified for authentic pronunciation.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $42/hr

Posted Mar 28, 2025

Native German Speakers, Short Android Voice Recording

Record 100–150 short German sentences on your Android phone in a single ~1-hour session and earn $17.50/hr as a contractor. Native German (Germany) speakers only; submissions are verified and only authentic recordings will be compensated.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $17.5/hr

Posted Mar 28, 2025

React/Next.js + Tailwind (Shadcn/UI) Developers Needed

OpenTrain AI seeks React/Next.js developers experienced with Tailwind CSS and Shadcn/UI to build polished UIs under a tight deadline. This contract role pays $17/hr for approved tasks and requires immediate availability to complete work by Wednesday, March 26.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $17/hr

Posted Mar 22, 2025

Record First-Person T-Shirt Folding Videos

Join OpenTrain AI to collect 30-minute egocentric videos of T-shirt folding for an AI training project — earn a fixed $80 per completed video. This entry-level, remote contract task requires a smartphone, a helper to hold the camera, and following step-by-step audio and folding cues exactly.

Data Collection
Video
Remote · Worldwide
Part-time · Flexible
Entry level
Fixed price · $80

Posted Mar 18, 2025

Speech & Accent Evaluator, Southern Levantine Arabic (Jordan)

Join OpenTrain AI as a part-time contractor evaluating AI speech in Southern Levantine Arabic (Jordan). This role pays $20/hr, requires you to be based in Jordan with at least 2 years using the dialect, and focuses on rating and improving AI-generated Arabic audio.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 14, 2025

Dutch Speech & Accent Evaluator, Netherlands

OpenTrain AI seeks Netherlands-based evaluators to rate and improve Dutch AI speech for accent, pronunciation, and fluency. Part-time contractor role paying $28/hr with flexible hours and a short audio-based assessment as part of hiring.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $28/hr

Posted Mar 14, 2025

Canadian English Speech & Accent Evaluator

Remote, Canada-based contractors needed to evaluate AI-generated Canadian English audio — $25/hr, under 20 hrs/week. Use your spoken Canadian English experience to assess accent, pronunciation and fluency and give structured feedback to improve AI speech.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Mar 14, 2025

Speech & Accent Evaluator, Irish English (Ireland)

Join OpenTrain as a part-time Speech & Accent Evaluator working remotely from Ireland to assess and improve AI-generated Irish English audio. Earn $20/hr evaluating pronunciation, fluency, and accent while providing clear, structured feedback.

Audio & Speech
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 14, 2025

Music Fans Needed for Short AI Chat Study

Love music and comfortable speaking English? Join OpenTrain AI for three conversational AI sessions (20–30 minutes each) about your music tastes and U.S. music culture, then give feedback — total ~60–90 minutes at $6.65/hr.

Generative AI & RLHF
Audio
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $6.65/hr

Posted Mar 11, 2025

YOLOv7 Expert, Review AI-Generated Object Detection Code

Remote contract role reviewing AI-generated YOLOv7 object-detection code, explanations, and deployment advice; provide technical code reviews, accuracy checks, and clear written feedback. Part-time (under 20 hrs/week) at $30/hr — flexible, worldwide.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $30/hr

Posted Mar 10, 2025

OpenCV & YOLO Expert, Review AI-Generated Code

Experienced OpenCV/YOLO developer (5+ years) needed to review AI-generated code and responses, run structured technical interviews, and provide clear, actionable feedback; remote contractor, part-time (under 20 hrs/week) at $30/hr.

Generative AI & RLHF
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $30/hr

Posted Mar 10, 2025

PyTorch YOLO Code Review & Model Evaluation Specialist

OpenTrain AI seeks an experienced PyTorch developer to review AI-generated YOLO code, prompts, and model recommendations; part-time contractor work (<20 hrs/week) at $25/hr, remote and worldwide. Provide technical feedback, code reviews, and improved responses aligned with best practices.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Mar 10, 2025

Laravel Developer, AI Code Evaluation & Interviewer

Help shape AI-generated Laravel code by reviewing prompts, responses, and candidate answers in a structured interview role; $20/hr, contractor, under 20 hrs/week, fully remote. Bring deep Laravel experience and clear English writing to give actionable, security-minded feedback.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 10, 2025

Experienced Laravel Livewire Reviewer & Interviewer

Join OpenTrain to evaluate AI-generated Laravel Livewire code and conduct structured technical interviews. This paid, part-time contractor role is remote worldwide at $20/hr for under 20 hours per week.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 10, 2025

PHP (Laravel) Code Reviewer For AI Evaluation

Evaluate AI-generated PHP (Laravel) code, run technical interviews, and provide structured feedback to improve model outputs. Part-time remote contractor role paying $15/hr; requires 5+ years hands-on Laravel experience and strong English writing.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $15/hr

Posted Mar 10, 2025

LangChain v2 Developer, Code Review & Evaluation

Experienced LangChain v2 developer needed to evaluate AI-generated LangChain code and conduct technical interviews; part-time contractor role (remote, worldwide) at $20/hr for under 20 hours/week. You'll label, critique, and provide structured feedback to improve LangChain v2 outputs and candidate a

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 10, 2025

OpenAI Cookbook Code Reviewer and Evaluator

Contract role to review and evaluate AI-generated OpenAI Cookbook code: label, categorize, and give structured technical feedback; $20/hr, under 20 hours/week. Ideal for developers with 5+ years working with OpenAI’s API, fine-tuning, prompt engineering, embeddings, and clear English communication.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 10, 2025

Azure OpenAI Developer, Code Review & Evaluation

Hire as a part-time Azure OpenAI developer to review, label, and improve AI-generated code and deployment guidance; requires 5+ years hands-on Azure OpenAI experience, strong English writing, and availability under 20 hrs/week at $20/hr.

Generative AI & RLHF
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 10, 2025

Transformers Developer, Code Evaluation & AI Review

Experienced Transformers developer needed to evaluate AI-generated Transformers code, run technical interviews, and provide structured feedback to improve model usage and documentation. Remote, contract, part-time work at $27/hr for contributors with hands-on Hugging Face experience.

Generative AI & RLHF
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $27/hr

Posted Mar 10, 2025

ChromaDB Developer, Code Review & Evaluation

OpenTrain AI seeks a ChromaDB developer to review and label AI-generated ChromaDB code, provide structured technical feedback, and run technical screening interviews; part-time contractor, $25/hr, under 20 hrs/week, fully remote.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Mar 10, 2025

LlamaIndex Developer, Code Review & Evaluation

Join OpenTrain to review and evaluate AI-generated LlamaIndex code and prompts, providing detailed, structured feedback to improve RAG integrations. Remote contract, up to 20 hrs/week at $25/hr; requires 5+ years hands-on LlamaIndex experience and strong English writing.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Mar 10, 2025

Godot v4 Developer for AI Code Review

Seeking an experienced Godot v4 developer (5+ years) to review, label, and critique AI-generated Godot v4 code and explanations; provide clear, structured feedback to improve AI outputs. Part-time contractor, remote, $25/hr, under 20 hours/week.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $25/hr

Posted Mar 10, 2025

Angular v17 Developer, AI Code Evaluation

Join OpenTrain as a remote, part-time Angular v17 developer to evaluate and label AI-generated code responses; you’ll identify bugs, suggest improvements, and provide clear written feedback. Requires 5+ years hands-on Angular v17 experience and strong English writing; $20/hr.

Coding & Software
Computer Code Programming
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $20/hr

Posted Mar 10, 2025

Shanghainese Speech Evaluator (Remote, Part-Time)

Use your Shanghainese expertise to record and rate AI speech for pronunciation and fluency — remote, flexible contract work at $23/hr. Help iterate AI responses until multiple outputs receive a perfect 7/7 naturalness score.

Audio & Speech
Text
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $23/hr

Posted Mar 7, 2025

Singlish Chatbot Trainer: Write, Edit and Rate AI Responses

Join OpenTrain as a part-time contractor helping train an AI chatbot to understand and speak natural Singlish. This role pays $23/hr, requires Singapore native residency, and involves writing, editing, and rating AI-generated Singlish text.

Generative AI & RLHF
Text
Remote · Worldwide
Part-time · Flexible
Entry level
Hourly · $23/hr

Posted Mar 7, 2025

What this work can involve

AI training and data labeling work can involve preparing or reviewing examples used by artificial-intelligence systems. Depending on the 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. A remote role that accepts applicants located in Croatia is not necessarily physically based there, and each posting determines its own location rules and responsibilities.

  • Possible tasks include image or video labeling, audio work, response evaluation, search-result review, translation, code review, and subject-matter assessment.
  • The individual posting is the source of truth for the work and its requirements.
  • Check each listing to confirm whether applicants located in Croatia are eligible.

How hiring works through OpenTrain

OpenTrain is the hiring organization for roles available through OpenTrain, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they support. Individual postings control eligibility, qualifications, experience, pay, hours, schedule, location rules, and client-specific requirements, so read the relevant listing for the details that apply.

  • Apply through OpenTrain for the role described in the individual posting.
  • Confirm in the listing that applicants located in Croatia are eligible.
  • Review the complete posting for role-specific requirements and terms.

Frequently asked questions

What can this work involve?
Remote AI training and data labeling work open to applicants located in Croatia can 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 exact duties depend on the individual live posting.
Where can I find role-specific details?
Find role-specific details in the individual live posting. That listing controls eligibility, responsibilities, qualifications, experience, pay, hours, schedule, location rules, and client-specific requirements, including whether applicants located in Croatia can apply.
How does hiring work through OpenTrain?
OpenTrain is the hiring organization, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they support. The individual live posting provides the applicable requirements and terms for each role.