Find remote AI training and data labeling jobs open to applicants in Costa Rica.
Create realistic backend coding tasks and deterministic verifiers that test whether AI-generated solutions work correctly and securely. This contract role pays $30 to $100 per hour and requires 20 or more hours weekly.
Posted Sep 21, 2026
Review and create evaluation tasks for AI-generated medical communications, including scientific slides, HCP materials, and patient content. Earn $50 to $80 per hour with a 20+ hour weekly commitment.
Posted Sep 21, 2026
Review and improve code, find vulnerabilities, and strengthen AI training data using your cybersecurity and software engineering skills. This contractor role offers flexible work of about 15 hours per week and output-based pay of $30 to $100 per hour.
Posted Sep 21, 2026
Review and write Clinical Study Reports, safety documents, and AI-generated regulatory content as a remote contractor. The role pays $30 to $60 per hour and requires at least five years of regulatory medical writing experience.
Posted Sep 21, 2026
Create and review expert-level legal AI tasks covering contracts, litigation support, and legal research. This remote contract role pays $400 per approved task and requires a JD or equivalent plus active US bar admission.
Posted Sep 21, 2026
Create, review, and improve expert-level legal tasks for contract, litigation-support, and legal-research workflows. Each approved task pays $400 and typically takes 8 to 10 hours.
Posted Sep 21, 2026
Build Python backends that reproduce SaaS tools and create realistic tasks for AI agent evaluation. This remote, four-week contract pays $300 per approved task and requires at least 20 hours per week.
Posted Sep 21, 2026
Review and tag visual data as a Video Annotation Supervisor using CVAT, bounding boxes, and key points. This worldwide, part-time contract offers a fixed USD 50,000 price and requires expert-level accuracy.
Posted Sep 21, 2026
Use your civil engineering judgment to create realistic technical tasks, documents, and rubrics for evaluating AI systems. This contractor role pays $50 to $100 per hour and requires 20 or more hours per week.
Posted Sep 20, 2026
Use your clinical expertise with young abuse survivors to review AI-generated mental health guidance, shape trauma-informed content, and improve safety. This part-time contract pays $100 to $200 per hour.
Posted Sep 20, 2026
Create and review English web research tasks that help AI systems learn from reliable sources, exact quotes, and clear human judgments. This remote contract role offers $30 per completed label or task.
Posted Sep 20, 2026
Create realistic backend coding challenges and build deterministic verifiers that separate valid solutions from flawed ones. This remote contractor role offers flexible work of about 15 hours per week.
Posted Sep 20, 2026
Create reproducible environments and expert reference solutions that test how AI models solve complex coding problems. This remote contractor role pays $100 to $150 per hour and requires strong software engineering skills.
Posted Sep 20, 2026
Create realistic coding challenges and reliable verifier scripts that help train AI models. This remote contractor role offers flexible scheduling, about 15 hours per week, and $30 to $100 per hour based on experience and efficiency.
Posted Sep 20, 2026
Review and improve AI-generated legal work using your federal civil litigation experience. This remote contractor role pays $150-$300 per hour and requires a record of at least three federal civil motions won.
Posted Sep 19, 2026
Transcribe and review Korean and English audio for AI training at $20-$36 per hour. Work remotely for at least 10 hours per week with a flexible schedule.
Posted Sep 19, 2026
Transcribe, review, and evaluate Portuguese and English audio for AI training. This flexible remote contractor role pays $20-$36 per hour and requires native-level Portuguese plus professional transcription experience.
Posted Sep 19, 2026
Transcribe Spanish and English audio, review language data, and add annotations that help train AI systems. This remote contract pays $20 to $36 per hour for at least 10 hours weekly.
Posted Sep 19, 2026
Transcribe and annotate Hindi and English audio remotely for AI training projects. This part-time contractor role pays $20-$36 per hour and requires at least 10 hours each week.
Posted Sep 19, 2026
Transcribe Mandarin and English audio, add project tags, and proofread final text for AI training. This remote contractor role pays $20 to $36 per hour and requires native Mandarin fluency plus professional transcription experience.
Posted Sep 19, 2026
Transcribe French audio, correct errors, and review AI outputs for accuracy and consistency. This remote contractor role pays $20 to $36 per hour and requires at least 10 hours weekly.
Posted Sep 19, 2026
Transcribe and review Japanese audio to help improve AI systems. Earn $20 to $36 per hour on a part-time contract requiring less than 20 hours weekly.
Posted Sep 19, 2026
Review and score AI-generated legal responses for accuracy, clarity, and supported reasoning. This contractor role pays $90 to $140 per hour and requires a qualifying law degree plus fluent English.
Posted Sep 19, 2026
Evaluate AI-generated written responses for accuracy, clarity, tone, helpfulness, and instruction following. This remote contract role pays $90-$140 per hour and requires strong English writing or editorial experience.
Posted Sep 19, 2026
Review and compare AI-generated written responses, score them against clear standards, and explain your decisions with evidence. This remote contractor role pays $90-$140 per hour and requires strong English writing review experience.
Posted Sep 19, 2026
Transcribe and review Italian audio for AI training, annotate linguistic details, and flag unclear recordings. Earn $20 to $36 per hour for at least 10 hours each week.
Posted Sep 19, 2026
Transcribe and annotate German audio to help train AI language systems. This contract role pays $20-$36 per hour, requires 20+ hours weekly, and is open to native-level German speakers with no prior AI experience required.
Posted Sep 19, 2026
Use your Tier 2 or Tier 3 IT support experience to troubleshoot hardware, software, operating systems, and networks for AI training work. This remote contractor role pays a target $30-$55 per hour.
Posted Sep 19, 2026
Listen to short AI-generated music clips and identify their instrument family and specific instrument. This remote, fixed-price project pays $150-$160 and must be completed within a flexible two-day window.
Posted Sep 19, 2026
Build data validation suites and test PII and PHI de-identification systems for accuracy, privacy, and data quality. This remote contract requires Python, SQL, ML evaluation, and privacy compliance experience.
Posted Sep 19, 2026
AI training and data labeling work can involve preparing information that helps artificial-intelligence systems learn and be evaluated. Depending on the project, 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. For applicants located in Costa Rica, the relevant posting will state whether the role accepts applications from that country and explain the work involved.
OpenTrain is the hiring organization for roles available through OpenTrain. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support. Whether a particular opportunity accepts applicants located in Costa Rica is determined by its individual posting, along with its qualifications and other requirements.
