Looking for remote AI training or data labeling work you can apply for from Czechia? OpenTrain is the hiring organization for these roles, and candidates apply through OpenTrain. OpenTrain may place or refer successful candidates to the client whose project they will support.
Annotate robotic surgery video in Supervisely for a part-time, fully remote contractor role applying segmentation, bounding boxes, keypoints, and object tracking; strong attention to detail and medical familiarity required. Pay range $15–$32/hr (hourly rate listed $22/hr); expect ~20+ hrs/week.
Posted Jul 12, 2026
Join OpenTrain as a remote Data Annotation Generalist working 20+ hours/week on English text classification projects; entry-level contributors with strong attention to detail and communication skills are encouraged to apply for $30–$80/hr (USD).
Posted Jul 11, 2026
Join OpenTrain AI as a Video Annotation AI Trainer to label short video clips for model training—work remotely 20+ hours/week and earn $40–$80 per hour while building a verifiable portfolio in a fast-growing field.
Posted Jul 11, 2026
Join OpenTrain to implement C++ checker solutions during a live competitive programming contest — $45–$65/hr, 20+ hrs/week, one-time live participation with estimated project earnings of $7,200–$10,400. Remote, contractor-friendly role for skilled C++ competitive programmers.
Posted Jul 11, 2026
Join OpenTrain AI as a remote Architect CAD and Construction Documentation Reviewer—work 20+ hrs/week creating and reviewing CAD drawings, GD&T callouts, electrical schematics, and PCB layouts to train next-generation AI; $40–$50/hr, worldwide, English required.
Posted Jul 11, 2026
Label short video clips for event classification and precise timestamping in a flexible, remote contractor role. Work 20+ hours/week with pay from $40–$80/hr, using strong attention to detail and English to produce high-quality training data.
Posted Jul 11, 2026
Build C++ checkers and test suites that validate complex competitive-programming submissions for next-generation AI training. Remote, contract role for strong competitive programmers who can design problems, write reference solutions, and document edge-case logic.
Posted Jul 11, 2026
Design RL environments that test AI models on original competitive programming problems by building C++ checkers, reference solutions, and robust test suites. Remote, part-time contractor role (20+ hrs/week) paying $45–$65/hr for English speakers worldwide.
Posted Jul 11, 2026
Join OpenTrain as a Video AI Training Specialist to analyze, annotate, and evaluate video data that helps shape next-gen AI. Remote, contract role paying $65–$80/hr for 20+ hours/week; no prior AI experience required if you have professional video production skills.
Posted Jul 11, 2026
Join OpenTrain as a Japanese Music AI Model Evaluator to review, score, and tag AI-generated music and lyrics; bilingual music producers and audio engineers can work remotely 20+ hours/week and earn up to $62.49/hr. Apply if you can write music in Japanese and follow English directions.
Posted Jul 10, 2026
Record expressive, natural French speech for text-to-speech training and evaluation. Earn $50 per hour remotely while helping shape an internal AI voice agent.
Posted Jul 10, 2026
Join OpenTrain as a French Music Audio Evaluation Expert to rate and annotate AI-generated music in French — part-time contractor work under 20 hours/week, paid $30–$60.48/hr. Use your production and lyrical skills to shape next-generation music models.
Posted Jul 10, 2026
Evaluate AI-generated Spanish (MX) music by rating musicality, lyrics, vocals, and production while annotating genre, song structure, and vocal/instrumental traits. Remote, part-time contract paying $13.01–$54/hr for up to 6 months with a 20+ hour weekly commitment.
Posted Jul 10, 2026
Evaluate Arabic AI-generated music—lyrics, vocals, musicality and mixes—working remotely part-time. Immediate start; pay $12–$44.25/hr for experienced Arabic-speaking music producers and audio engineers.
Posted Jul 10, 2026
Join OpenTrain AI to evaluate and annotate Indonesian-language AI-generated music and lyrics — part-time remote work, 20+ hrs/week, up to 6 months, pay $11.42–$20.55/hr. Use your music production and audio-engineering expertise to rate musicality, vocals, lyrics, and mixes.
Posted Jul 10, 2026
Create technically rigorous single-choice questions and answer rationales for mechanical engineering AI training. Remote contractor role, 20+ hrs/week, $50–70/hr (typical $70/hr); MS or PhD in Mechanical Engineering required.
Posted Jul 10, 2026
Join OpenTrain AI to design and review technical multiple-choice questions and rubrics that train and evaluate electrical-engineering models. Remote, asynchronous contractor work at $60–$80/hr for 20+ hours/week, focused on technical accuracy and pedagogical quality.
Posted Jul 10, 2026
Join OpenTrain as a remote Software Engineer Code Reviewer working 20+ hrs/week to write, review, and rate Go, Python, and TypeScript code to train and evaluate AI systems. Competitive contractor pay ($100–$130/hr) and flexible scheduling.
Posted Jul 10, 2026
Collect synchronized smartphone IMU and first-person video for AI training in a part-time contractor role; entry-level, $10/hr, under 20 hrs/week, remote for applicants in eligible European countries. Hands-free recording and careful adherence to technical protocols required.
Posted Jul 10, 2026
Build pixel-perfect responsive web components from design screenshots and style guides using TypeScript and CSS3 in a remote contract role. 20+ hrs/week, $40–50/hr; strong English communication and ability to work independently required.
Posted Jul 9, 2026
OpenTrain seeks an expert Senior Webflow Developer to build and optimize responsive Webflow sites part-time (under 20 hrs/week). Earn $35–$50/hr converting Figma to production, managing CMS, creating animations, improving SEO/CRO, and automating workflows.
Posted Jul 9, 2026
Create realistic business documents and evaluate AI-generated responses to improve how models handle professional scenarios; remote contractor role paying $35–$50/hr with a ~20+ hour/week commitment.
Posted Jul 9, 2026
Work remotely as a contractor reviewing packing lists, bills of lading, inventory registers, and supply-chain documents to train AI systems; 20+ hours/week, $40–$50/hr. Join OpenTrain AI to turn your logistics experience into flexible, high-impact annotation work.
Posted Jul 9, 2026
Work remotely as an Ubuntu/Linux AI Data Trainer, contributing structured text data to AI model training for under 20 hours/week. Pay is hourly ($10–$20/hr); you'll install tools on Ubuntu, follow written procedures, record actions, and ensure high-quality submissions.
Posted Jul 9, 2026
Lead Czech-language quality assurance for AI training projects: review AI-generated Czech text, give rubric-aligned feedback, maintain style guides, and support onboarding. Remote contractor role for Czech Republic residents, 20+ hrs/week at $30/hr.
Posted Jul 8, 2026
OpenTrain seeks a remote Chemistry Expert Reviewer to design, review, and refine chemistry content and problems for AI training; PhD or ABD with teaching and research experience required. Part-time contractor role, 20+ hrs/week, $70–$90/hr.
Posted Jul 7, 2026
Use your computational biology expertise to evaluate and annotate AI-generated outputs across genomics, structural biology, and systems biology. Remote contractor role, 20+ hrs/week, $40–$60/hr — help shape safer, more accurate scientific AI.
Posted Jul 7, 2026
Apply your computational chemistry expertise to review simulations, electronic-structure methods, and cheminformatics pipelines used to train and validate chemistry-focused AI systems. Remote contract role, 20+ hrs/week, $40–$60/hr.
Posted Jul 7, 2026
Join a long-term, remote video-annotation contract to help train vision-language action models by classifying activities and marking objects in everyday household videos using Encord. Fixed-price contract ($58,000 USD) with up to 180 hours/month per annotator and ongoing work for top performers.
Posted Jul 7, 2026
Join OpenTrain AI as a part-time, remote Software Engineer focused on QA and testing for AI-powered video generation products — 20+ hrs/week at $30–$42/hr. Bring TypeScript experience, a portfolio of self-built projects, and QA/test automation skills to help improve real AI products.
Posted Jul 6, 2026
AI training and data labeling work helps prepare and review examples used by artificial-intelligence systems. Depending on the individual role, tasks may 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. A remote listing that accepts applicants located in Czechia may focus on one or more of these activities, so read each posting to understand its specific scope.
OpenTrain is the hiring organization for the public 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 project has its own requirements, the individual live posting is the source of truth for eligibility, qualifications, hours, pay, and other role-specific details.
