Remote AI training jobs in Costa Rica
Open AI training and data labeling positions available to applicants in Costa Rica. Every job is remote — apply with a free OpenTrain account.
2 open positions
Dart Programming Language Expert (India, C1 English)
Seeking a Dart Subject Matter Expert based in India with C1 English and 7+ years of Dart experience to review, categorize, and annotate Dart technical content for ML datasets; remote contract, part-time at $25/hr. Less than 20 hours/week commitment; precise weekly hours will be confirmed during inte
View jobPosted Dec 26, 2024
Software & Development Experts Needed for 40+ Computer Science Specializations (USA)
Join OpenTrain to annotate and evaluate code and technical content across one of 43 software specializations; $40/hr, part-time contractor work for US-based native English speakers. You must have 5+ years in your chosen specialty and pass a coding skill test plus a live interview.
View jobPosted Dec 21, 2024
Software & Development Experts (C1/C2 English) Needed for 40+ Computer Science Specializations (India)
Join OpenTrain to label and annotate technical programming content in one of 43 software specializations — India-based SMEs with C1/C2 English and 5+ years' experience wanted. $25/hr, contractor part-time, 20+ hours/week; applicants must pass a live coding test and interview and may select only one
View jobPosted Dec 21, 2024
Music Fit Evaluation - Music Professionals (Tier 1) - B1/B2 English (Spain)
Remote, part-time contract work evaluating and categorizing music audio to train AI tools used in production, sound design, and mastering; requires music production or audio-engineering experience and B1/B2 English. $25/hr, under 20 hrs/week.
View jobPosted Dec 19, 2024
Music Fit Rating - B1/B2 English Required (Spain)
Listen to two music tracks and read long English lyrics, then choose which track best fits and explain your reasoning; work remotely from Spain with flexible, part-time hours. Entry-level pay is $10–$11/hr and the role requires B1/B2 English and a broad appreciation of music genres.
View jobPosted Dec 14, 2024
Music Fit Rating - B1/B2 English Required (Philippines)
Rate which of two music tracks best matches long English song lyrics and explain your choice in clear written English; entry-level, remote contractor work for candidates in the Philippines with 20+ hours/week. Pay up to $3.15/hr.
View jobPosted Dec 14, 2024
OBGYN Doctors - Large Language Model Training
Experienced OBGYN physicians are needed to review and refine obstetrics and gynecology content for a medical chatbot; contract, remote work at $100/hr with an expected 20+ hours/week commitment. Applicants must hold an MD, completed OBGYN residency, and have 5+ years clinical experience.
View jobPosted Dec 12, 2024
Short Project - Audio Recording (2 hours) - Italian (Italy) & Android Phone Required
Native Italian speakers based in Italy with an Android phone are needed to record ~500 short voice commands (~2 hours) using a mobile app for voice-recognition training; fixed payment $51. Consent and instructions are provided in English; a pre-hire audio sample is required and work must finish by D
View jobPosted Dec 6, 2024
Attorneys Needed for LLM Training (English Fluency Required)
Licensed attorneys with English fluency are needed to A/B evaluate an internal legal LLM's responses; pay is $2.125 per label with no weekly cap and current labelers average $2,000/week. Part-time contractor work under 20 hours/week, open worldwide.
View jobPosted Dec 3, 2024
Full-Stack Software Engineers for AI Training (Python, Javascript)
Remote, part-time contractor role conducting in-depth code and unit-test QA for AI training at $30/hr. Work 20+ hours/week reviewing Python or JavaScript coding artifacts, refining rubrics, and providing actionable feedback to improve model training quality.
View jobPosted Nov 24, 2024
Human Feedback-Driven Code Generation for Python
Join a remote, entry-level RLHF project improving Python code produced by LLMs — review, correct, and optimize auto-generated scripts. Flexible contractor work paid at $50 USD/hour using the Scale AI labeling tool; worldwide applicants welcome.
View jobPosted Nov 12, 2024
Databricks Specialist with Python, Java, and/or Spark Expertise
Work remotely with OpenTrain as a Databricks Specialist optimizing large-scale Spark ETL and data pipelines; contract, part-time role at $12/hr, 20+ hours/week. Candidates must have hands-on Databricks experience and deep Apache Spark expertise.
View jobPosted Nov 12, 2024
Product Evaluation and Query Optimization (English)
Join a remote, part-time project evaluating search queries and product relevance for e-commerce—start with a 1-hour paid test and be considered for a 1–2 month contract. Requires expert search-evaluation experience and strong English skills; $4/hour, <20 hrs/week.
View jobPosted Nov 5, 2024
LLM Data Labelling and Annotation
Label and verify 500–1,000 rows of LLM responses in AWS SageMaker using a two-step human review workflow; requires expert-level English familiarity and at least one reviewer with technical or financial expertise. Remote contract, part-time, 20+ hrs/week at $5/hr.
View jobPosted Oct 31, 2024
3D Key-Point Body Annotation – Long-Term Project (Pilot Phase)
Paid 2-hour pilot to refine 3D human-pose key points from 2D annotations with potential ongoing part-time work; US-based experts only, $15/hr, flexible scheduling under 20 hours/week. Ideal for annotators experienced in 2D→3D pose alignment, FOV/ground-plane adjustment, and avatar fitting.
View jobPosted Oct 25, 2024
Polish-Speaking Data Annotator for Product Review Topics and Sentiment
Native or fluent Polish speakers needed to label topics and sentiment in e-commerce product reviews. Flexible contract work (minimum 15 hrs/week), $7/hr, helping improve AI systems that sort and analyze customer feedback.
View jobPosted Oct 24, 2024
Labelling Shoppable Video Transcripts for Sales Attribution
Label 10,000 social-media shoppable video transcripts to mark presence/absence of ~30 sales-related features (e.g., urgency, discount mention). Intermediate-level, remote contract work requiring very strong English and 20+ hours/week; fixed-price $425.
View jobPosted Oct 23, 2024
Human Feedback-Based LLM Training Example Generation
Annotate images for human-feedback LLM training in a remote, entry-level contractor role using CVAT; 20+ hours/week. This fixed-price project pays USD 127,500 and is open worldwide to university graduates.
View jobPosted Oct 22, 2024
Short Project - Audio Recording (2 hours) - Native-Spanish (Spain) & Android Phone Required
Record ~500 short voice commands on an Android phone to help improve voice recognition; ~2 hours of work, $51 fixed, native European Spanish required and English instructions/consent must be followed. Complete the task within one week.
View jobPosted Oct 21, 2024
Short Project - Audio Recording (2 hours) | Native-French (France) & Android Phone Required
Earn $55.25 for ~2 hours recording ~500 short voice commands on an Android device; native French with a European accent required and instructions/consent are in English. Fully remote; complete the task within one week.
View jobPosted Oct 21, 2024
Short Project - Audio Recording (2 hours) - Native-German & Android Phone Required
Record ~500 short German voice commands using an Android app in a short, remote session (approx. 2 hours) for a fixed payment of $68. Native German (Germany) accent and an Android device (OS 9+) are required; instructions and consent are in English.
View jobPosted Oct 21, 2024
Audio Segmentation & Transcription | Expert English Writers
Work part-time as an English-language audio annotator: identify emotional 10–12s clips, tag valence/arousal, and produce detailed and brief transcriptions. Entry-level, contractor role — $8/hr, remote, under 20 hrs/week with a short sample test required.
View jobPosted Oct 21, 2024
Video labeling
Label fight video for action recognition and object detection using Roboflow; fixed pay $25.50 per task. Remote contractor role for intermediate annotators worldwide to mark strikes, attempted strikes, takedowns, clinch events and related actions.
View jobPosted Sep 27, 2024
Long-term Visual Data Labeling - Images/Video - France
Long-term, remote contract for experienced image/video annotators based in Western Europe — 15–20 hrs/week, flexible schedule, $14/hr. Apply if you have 2–3 years of computer-vision labeling experience and proficiency with tools like Labelbox or CVAT.
View jobPosted Sep 3, 2024
Visual Data Labeling - Images/Video - Argentina
Join a long-term, remote computer-vision annotation project labeling images and video (bounding boxes, polygons, segmentation) while working roughly 15–20 hours/week from South America or Latin America. Experienced annotators (2–3+ years) should apply; pay is $3.75/hr and candidates should submit co
View jobPosted Sep 3, 2024
Long-term Visual Data Labeling - Images/Video - USA
Remote contract for experienced computer-vision annotators in the US/Canada: long-term, part-time work labeling images and video (bounding boxes, polygons, keypoints, cuboids) with flexible hours and pay at $14/hr for ~15–20 hrs/week.
View jobPosted Sep 3, 2024
Audio Recording - English (Hispanic) - (short, urgent project)
Urgent, short contract to record 11 English trigger words (132 clips total) with varied tones and environments; estimated 1 hour and paid $9.24 on completion. Must be located in a Spanish-speaking country and able to record quiet and reflective audio.
View jobPosted Aug 23, 2024
Audio Recording - English (short, urgent project)
Record 132 short audio clips over 2–4 days for $15/hr. Native English speakers in the USA or Canada only — capture 11 trigger words across quiet and reflective settings and four emotional states with strict quality requirements.
View jobPosted Aug 23, 2024
Software Developer & AI Trainer (JSON, Tables, Lists - Native Languages)
Join a remote AI-training project creating and editing JSON, tables, and lists for model training; $25/hr, contractor role. You must be a native speaker of one specified language with strong software development skills (Python, JavaScript, SQL, HTML/CSS) and be available to start Aug 19.
View jobPosted Aug 14, 2024
Spanish (Spain only) - Creative Writing (LLM Chatbot Training)
Remote contract role for native Spanish writers living in Spain to craft and refine chatbot dialogue for LLM training; part-time contractor work, flexible hours (min 10 hrs/week, preferred 20+), paid $18.74/hr. Prior platform writing experience preferred.
View jobPosted Aug 8, 2024