Looking for remote AI training or data labeling work open to applicants located in Hungary? OpenTrain is the hiring organization for the roles on this page, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support. AI training work helps prepare and review examples used by artificial-intelligence systems. Depending on the posting, it may involve labeling images or video, transcribing audio, evaluating search results, writing or rating responses, translating text, reviewing code, or applying subject-matter knowledge.
Contract role for chemical safety and toxicology experts to evaluate model outputs and documents; $50–$90/hr, 20+ hours/week, with estimated project earnings of $8,000–$14,400. Work remotely for OpenTrain AI to shape how AI systems handle hazardous-chemicals content.
Posted Jun 30, 2026
Use expert PowerPoint and business-communication skills to create and evaluate executive-ready presentations that teach AI how to produce polished slide decks. Remote contract, 20+ hours/week, $30–$55/hr for part-time consultants.
Posted Jun 30, 2026
Join OpenTrain to evaluate AI-generated business documents in Portuguese, working remotely 20+ hrs/week as a contractor; assess Excel, PowerPoint and Word deliverables and provide actionable feedback. Pay range: $20–$70 USD/hr (up to $70/hr).
Posted Jun 30, 2026
Evaluate AI-generated business documents in Korean across finance, strategy, marketing, and operations. Remote contractor role, $30–$70/hr, 20+ hours/week — use Excel/PowerPoint/Word to test realistic scenarios and give actionable feedback that improves AI outputs.
Posted Jun 30, 2026
Work remotely reviewing and improving AI-generated business documents in Japanese—provide structured, professional feedback across finance, strategy, marketing, and operations. Part-time contractor role (20+ hrs/week) paying up to $70/hr for experienced business professionals.
Posted Jun 30, 2026
Remote contract role evaluating AI-generated French business documents across finance, strategy, marketing, and operations; 20+ hours/week and pay between $20–$70 USD per hour. Use Excel, PowerPoint, and Word to critique outputs, deliver structured feedback, and help make AI business writing more ac
Posted Jun 30, 2026
Join OpenTrain as a remote Biosecurity & Synthetic Biology Expert to evaluate AI outputs for biosecurity risk, working ~20 hrs/week on a 1–3 month contract at $50–$90/hr (est. $8k–$14.4k). Use your biorisk and synthetic biology expertise to rate model responses and provide clear, evidence-based feed
Posted Jun 30, 2026
Join OpenTrain as an AI Content Evaluator to review, score, and annotate AI-generated text using detailed rubrics. Flexible remote contractor role (20+ hrs/week) paying $20–$80/hr, helping improve model accuracy across business, healthcare, legal, and research content.
Posted Jun 30, 2026
Join OpenTrain to score and annotate AI-generated text, working 20+ hours/week as a remote contractor. Help improve model relevance, coherence, and factual accuracy across business, finance, healthcare, legal, and research topics at $20–$40/hr.
Posted Jun 30, 2026
OpenTrain AI seeks an adversarial ML / red-team specialist to design safety tests, stress-test LLMs for prompt-injection and tool-use abuse, and build regression suites. Part-time contractor role (remote, 20+ hrs/week) paying USD $50–$90/hr.
Posted Jun 30, 2026
Join OpenTrain AI as a remote Image Evaluation Specialist reviewing images against detailed rubrics for $20–$30/hr, 20+ hours/week. Evaluate image quality, flag edge cases, and write concise review explanations to help calibrate AI training datasets.
Posted Jun 30, 2026
Join OpenTrain as a contractor to conduct in-depth research, review and prepare Word/PDF documents, and synthesize academic and industry literature for AI training projects; remote, 20+ hours/week, hourly pay up to $55.
Posted Jun 30, 2026
Join OpenTrain AI to define safety standards, escalation protocols, and abstraction frameworks for nuclear and radiological risk evaluation; remote, 20+ hrs/week, $50–$90/hr. Help shape how advanced models handle sensitive nuclear security information.
Posted Jun 30, 2026
Annotate engineering diagrams as graphs: draw tight bounding boxes for symbols (7 classes plus routing nodes) and label edges (solid/non-solid). Small paid pilot followed by a ~60-sheet batch; tooling experience with Label Studio or CVAT required.
Posted Jun 30, 2026
Join OpenTrain as a remote Angular code reviewer helping AI learn from expert front-end feedback; contractor, asynchronous work at $30–$90/hr for 20+ hours/week. Apply if you have strong Angular, RxJS, and SCSS/SASS experience and clear written communication.
Posted Jun 29, 2026
Join OpenTrain as a remote, contract Rust backend developer to build and harden REST/GraphQL APIs and run focused evaluations of AI-powered coding tools (Cursor). Part-time role (<20 hrs/week) paying $30–$90/hr for clear, well-documented backend feedback.
Posted Jun 29, 2026
Join OpenTrain as a Java Backend Engineer supporting AI system training—build Spring Boot microservices, optimize performance, and deliver high-quality code and documentation. Part-time contractor role, 20+ hrs/week, remote, paid hourly (up to $90/hr).
Posted Jun 29, 2026
Remote German-speaking reviewer needed to evaluate and improve AI-generated business documents across finance, strategy, marketing, and operations. Part-time contractor role (20+ hrs/week) with pay up to $70/hr evaluating document quality and delivering structured feedback.
Posted Jun 29, 2026
Contract, part-time remote role reviewing financial models, pitch books, and valuations to train AI; pay $30–$65/hr and 20+ hrs/week. Bring investment banking expertise to improve dataset quality and model outputs.
Posted Jun 29, 2026
Transcribe and review Hebrew audio to improve AI transcription models in a remote contractor role paying $20–$35/hr for 20+ hours/week. Ideal for fluent Hebrew speakers experienced in correcting machine transcripts, tagging metadata, and delivering organized batches.
Posted Jun 28, 2026
Build scalable Python APIs and help test AI coding tools in focused four-day bursts. This remote contractor role offers $50–$100 per hour, 20+ hours weekly, and the chance to shape developer-focused AI systems.
Posted Jun 28, 2026
OpenTrain seeks a Mathematics Expert (PhD) to write and review advanced mathematics prompts, model answers, and evaluations; part-time remote contract (~20 hrs/week) for 1–3 months at $80–$90/hr. Strong math background and clear written explanations required.
Posted Jun 28, 2026
Use expert Excel skills to review and improve complex business spreadsheets, design templates, and produce instructional case studies for AI training. Remote contract, 20+ hours/week, $40–$55 USD/hour (English required).
Posted Jun 28, 2026
Join OpenTrain AI as a remote, part-time contractor to review electrical schematics, wiring diagrams, and field documentation to help train next-generation AI—20+ hours/week, $40–$50/hr. Provide technical ratings and clear explanations to improve model outputs.
Posted Jun 28, 2026
Help train next-generation AI systems by designing competitive programming problems, implementing robust C++ checkers, and validating complex submissions. This remote contractor role offers flexible part-time work at $45–$65 per hour.
Posted Jun 28, 2026
Join OpenTrain as a Chemistry Expert (PhD) to write and review high-quality chemistry answers, create benchmark responses, and shape AI behavior. Part-time, remote work (20+ hrs/week) paying $80–$90/hr; English required, worldwide applicants welcome.
Posted Jun 28, 2026
Join OpenTrain as a remote CAD Review Specialist to annotate and evaluate 2D/3D AutoCAD designs that train AI systems; contractor, part-time role paying $20–$70/hr with 20+ hours/week and estimated project earnings of $3,200–$11,200.
Posted Jun 28, 2026
Part-time remote contractor role helping train AI systems by writing, reviewing, and rating business-operations content; $50–$60/hr, ~20 hrs/week for 1–3 months with estimated earnings of $8,000–$9,600. English fluency and real-world business analytics experience required.
Posted Jun 28, 2026
Join OpenTrain AI as a remote Business Intelligence Excel Consultant to review large Excel-based datasets, improve model outputs, and provide clear, stakeholder-ready feedback; $40–$50/hr, 20+ hours/week.
Posted Jun 28, 2026
Evaluate AI-generated business documents in Chinese—review Excel, PowerPoint and Word deliverables for accuracy, clarity, and professional polish, provide structured feedback across finance, strategy, marketing and operations, and help improve AI outputs. Remote contract; 20+ hrs/week; $20–$70/hr.
Posted Jun 28, 2026
These opportunities are intended for applicants located in Hungary, but the exact work depends on the individual role. A posting may focus on one type of data or combine tasks such as image annotation, video review, audio transcription or recording, response evaluation, search-result assessment, translation, code review, or subject-matter analysis. Read each live posting carefully to understand the work it defines and whether its requirements apply to you.
OpenTrain is the hiring organization for roles available through OpenTrain. Candidates apply through OpenTrain, and successful candidates may be placed or referred to the client whose project they will support. Because each client project can define its own requirements, the individual posting is the source of truth for eligibility, qualifications, experience, pay, hours, schedule, location rules, and other conditions.
