Explore remote AI training and data labeling roles that currently accept applicants in El Salvador. OpenTrain hires candidates and may place or refer successful applicants to a client project.
Join OpenTrain as a remote Data Annotator labeling video and audio for AI systems; part-time contract, 20+ hrs/week, $6–$10/hr. No prior AI experience required — attention to detail and strong English are what matter.
Posted Jul 28, 2026
Assess AI-generated reproductions of published ML papers: read papers, inspect code/data/output artifacts, rank reproduction attempts, and provide clear written evaluations. Remote, contractor role for experienced ML researchers — 20+ hrs/week.
Posted Jul 25, 2026
Experienced private equity attorney to review and annotate complex transactional documents for AI training; remote contract, 20+ hrs/week, pay up to $130/hr. Help teach models by providing precise legal analysis, sample clauses, and risk assessments.
Posted Jul 24, 2026
Capture and annotate gameplay from top-tier AAA games while helping shape the data used to train AI systems. This remote, part-time contractor role offers flexible work at $10–$15 per hour for contributors worldwide.
Posted Jul 24, 2026
Review BIM models and construction drawings using Revit and Navisworks to detect clashes, document root causes, and recommend technical fixes for AI training and model evaluation; remote contract, ~20+ hours/week.
Posted Jul 24, 2026
Apply your M&A legal expertise to simulated negotiations, contract redlining, and evaluation of AI-generated legal responses. This part-time remote contractor role pays $90–$150 per hour and requires an active U.S. bar admission.
Posted Jul 23, 2026
Join OpenTrain to record and transcribe Catalan speech from anywhere in Spain, part-time. Help build high-quality Catalan audio datasets, work under flexible hours, and earn $14–17/hr (typical $15/hr) as a contractor.
Posted Jul 23, 2026
Help evaluate AI software-engineering models by building reinforcement learning environments, deterministic tests, and reference solutions. This worldwide, part-time contractor role pays $80–$120 per hour and requires strong software engineering skills.
Posted Jul 23, 2026
Annotate images using CVAT and the Segment Anything tool to create polygon outlines for individual objects; entry-level, remote contract work paying $4–$6/hr (typical $5/hr). Start with a short trial and earn more work by meeting speed and accuracy goals.
Posted Jul 22, 2026
Short contract for a bilingual (German/English) reviewer to label and create analytical text scenarios that improve LLM reasoning. One-week, 40 hrs/week remote role with required daily overlap to UTC-8; immediate start.
Posted Jul 22, 2026
Join OpenTrain as a remote Hebrew Language Expert translating, localizing, and QAing Hebrew text for AI training. Contract, part-time role (20+ hrs/week), paid hourly up to $30/hr; native or near-native Hebrew and professional English required.
Posted Jul 22, 2026
Build reproducible reinforcement learning environments that test how AI systems solve real-world coding problems. This remote contractor role offers flexible work of approximately 15 hours per week at $50–$100 per hour.
Posted Jul 22, 2026
Join OpenTrain to build and evaluate RL training environments that teach AI systems how to operate cloud infrastructure. Remote contractor role, worldwide, 20+ hrs/week (see schedule), paying $60–$130/hr with estimated project earnings of $9,600–$20,800.
Posted Jul 22, 2026
Join OpenTrain to test an Android mobile app: run supplied test cases, find UI/functional bugs, capture screenshots, and submit clear reproduction steps. Fixed-price contract of $130 for part-time remote work under 20 hours/week; entry-level testers welcome.
Posted Jul 21, 2026
Join OpenTrain as a Medicinal Chemistry Review Specialist to evaluate and improve medicinal-chemistry datasets used to train advanced AI — contract, part-time, remote, 20+ hrs/week at $60–$80/hr. Provide expert reviews of structures, reactions, SARs, and experimental design.
Posted Jul 21, 2026
Apply advanced neuroscience expertise to annotate, review, and author neuroscience research, case studies, and scenario-based materials used to train generative AI — remote contract, part-time (20+ hrs/week), $60–$80/hr. Prior AI training experience not required.
Posted Jul 21, 2026
Apply your biochemistry expertise to annotate, validate, and refine biochemical datasets and model outputs for life-sciences AI; remote, 20+ hrs/week contract at $60–$80/hr. Join OpenTrain to shape how AI systems learn from scientific data.
Posted Jul 21, 2026
OpenTrain AI seeks an advanced-degree molecular biologist to review protocols, create annotations, and evaluate AI-generated scientific outputs. This remote, contract role is 20+ hours/week and pays $60–$80/hr for high-quality, evidence-based work.
Posted Jul 21, 2026
Join OpenTrain as a Pharmacology AI Training Expert helping train and evaluate AI responses about pharmacokinetics, pharmacodynamics, drug interactions, and therapeutic use. Contract role, 20+ hrs/week, paid $60–$80/hr for experienced PharmD/PhD/MD candidates.
Posted Jul 21, 2026
Join OpenTrain as a Human Data Manager to design and run annotation and data workflows, track KPIs, and improve dataset quality for AI training. Part-time contractor role, remote, paying $40–$60/hr with flexible hours (20+ hrs/week).
Posted Jul 21, 2026
Join OpenTrain AI as an Immunology AI Training Expert to evaluate and improve AI-generated immunology content, design datasets and case studies, and help shape scientifically accurate model outputs. Part-time contractor role (20+ hrs/week) paying $60–$80/hour, remote and worldwide.
Posted Jul 21, 2026
Design realistic cloud infrastructure tasks and reproducible environments to train next-generation AI systems. Remote contractor role (20+ hrs/week), $40–$100/hr, requires senior hands-on platform experience in cloud, SRE, or DevOps.
Posted Jul 21, 2026
Join OpenTrain as an RL Environment Developer building reproducible reinforcement-learning environments that test AI models on complex software engineering workflows; contract, remote, 20+ hrs/week, $50–$150/hr based on experience.
Posted Jul 20, 2026
Evaluate a personalization feature in Polish by designing short multi-turn prompts, comparing paired model responses, and writing concise, defensible quality rationales. Contractor role, $20/hr, remote, ~4 hours/day with 4-hour overlap with PST for a 1-month engagement.
Posted Jul 20, 2026
Join OpenTrain AI to design, solve, and evaluate challenging mathematics problems that probe LLM reasoning limits; this remote, part-time contractor role expects 20+ hours/week, advanced graduate-level math knowledge, Python ability, and English fluency.
Posted Jul 20, 2026
Senior front-end engineers help fine-tune AI by reviewing and generating high-quality technical text about React, React Native, HTML/CSS, and e-commerce flows; $70–$100/hr, part-time contractor work with flexible remote hours and fast start.
Posted Jul 18, 2026
Use your commercial legal expertise to build contract playbooks, refine agreements, and provide practical feedback that helps train AI systems. This remote contractor role offers 20+ hours per week at $90–$150 per hour.
Posted Jul 18, 2026
Use expert UX/UI judgment to review web and mobile design work, evaluate AI model outputs, and provide feedback that improves AI systems. Remote contractor work pays $25–$40 per hour and requires 20+ hours weekly.
Posted Jul 18, 2026
Use your UX/UI and Figma expertise to create high-quality design examples and critiques that train generative AI models. Part-time contractor role, 20+ hrs/week, remote worldwide, $15–$30/hr.
Posted Jul 18, 2026
Contract with OpenTrain as an AI Quality Analyst evaluating a conversational AI personalization feature: design multi-turn prompts, rate side-by-side text responses, and write defensible rationales. 3-month contract, remote, 20+ hrs/week with required PST overlap.
Posted Jul 17, 2026
