OpenJob database

Find the right opportunity, not just another listing.

Filter by language, expertise, location eligibility and work mode. Pay and verification details are shown consistently.

Opportunities

1143 jobs

Meridial / Invisible Technologies

Mathematics Specialist (Fluent in Korean) – AI Trainer

English, Korean $6–$65/hour

We’re looking for mathematics specialists who live and breathe algebra, calculus, number theory, linear algebra, differential equations, statistics, geometry, mathematical logic, and discrete mathematics. You’ll challenge advanced language models on topics like real and complex analysis, optimization theory, mathematical proofs, set theory, probability distributions, cryptographic algorithms, and applied mathematics—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on classroom problems and theoretical mathematics questions, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improveme

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

STEM Specialist (Fluent in French) – AI Trainer

English, French $8–$65/hour

We’re looking for computer science specialists who live and breathe algorithms, data structures, machine learning, artificial intelligence, software engineering, computer networks, cybersecurity, cloud computing, database management, and systems architecture. You’ll challenge advanced language models on topics like algorithm optimization, model training and evaluation, network protocols, distributed systems, object-oriented design, and performance tuning—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on coding scenarios and theoretical computer science questions, verify factual accuracy and logical soundness, capture reprod

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Swedish Language Specialist – AI Trainer

English, Swedish $8–$65/hour

We’re looking for Swedish language specialists who live and breathe phonology, morphology, syntax, semantics, pragmatics, sociolinguistics, and language acquisition in Swedish. You’ll challenge advanced language models on topics like verb conjugation, noun-adjective agreement, sentence structure, regional dialects, word order, idiomatic expressions, and cultural context—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Coding Specialist (Fluent in Spanish – Spain) – AI Trainer

English, Spanish $8–$65/hour

We’re looking for coding specialists who live and breathe algorithms, data structures, software architecture, frontend and backend development, cloud infrastructure, and systems programming—and who can do so fluently in Spanish (Spain). You’ll challenge advanced language models on topics like asynchronous programming, RESTful API integration, memory management, object-oriented design, secure coding practices, and debugging distributed systems—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on software engineering tasks and technical scenarios in Spanish (Spain), verify logical accuracy and coding fluency, assess naturalness

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Vietnamese Language Specialist – AI Trainer

English, Vietnamese $6–$65/hour

We’re looking for Vietnamese language specialists who live and breathe phonology, orthography, syntax, semantics, pragmatics, historical linguistics, and sociolinguistics. You’ll challenge advanced language models on topics like tonal differentiation, classifier usage, compound formation, dialectal variation, idiomatic expressions, honorifics, and context-dependent meaning—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Greek Language Specialist – AI Trainer

English, Greek $6–$65/hour

We’re looking for Greek language specialists who live and breathe Greek grammar, syntax, morphology, phonology, semantics, and pragmatics. You’ll challenge advanced language models on topics like verb conjugation, noun declension, word order, accents, idiomatic expressions, and stylistic variation—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Thai Language Specialist – AI Trainer

English, Thai $6–$65/hour

We’re looking for Thai language specialists who live and breathe phonetics, syntax, morphology, semantics, pragmatics, sociolinguistics, and language acquisition in Thai. You’ll challenge advanced language models on topics like tone marking, sentence structure, classifier usage, regional dialects, formal and informal language distinctions, idiomatic expressions, and cultural references—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Romanian Language Specialist – AI Trainer

English, Romanian $6–$65/hour

We’re looking for Romanian language specialists who live and breathe phonetics, morphology, syntax, semantics, pragmatics, and sociolinguistics of the Romanian language. You’ll challenge advanced language models on topics like verb conjugation, noun-adjective agreement, sentence structure, word order, accentuation, and colloquial expressions—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Polish Voice Actor – AI Trainer

English, Polish $6–$65/hour

We’re looking for a highly skilled Polish voice acting professional who can bring nuance, clarity, and authenticity to training data. You’ll work with cutting-edge AI tools, record and evaluate Polish speech samples, and provide expert feedback on pronunciation, tone, pacing, and emotional expression to strengthen voice models. On a typical day, you will record scripted material, assess AI-generated outputs for linguistic accuracy and naturalness, annotate errors, and collaborate with our team to refine prompts, evaluation methods, and voice design guidelines.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Language Alignment & Resource Partner (Polish) – AI Trainer

English, Polish $6–$65/hour

Project Overview We are sourcing independent Language Alignment & Resource Partners (LARPs) to provide native-level Polish language vetting and QA for a specialized AI data project. Production & Vetting Support: Providing native-level language vetting during project scaling and offering specialized linguistic consultation throughout the production phase. As a contractor you’ll supply a secure computer and high‑speed internet; company‑sponsored benefits such as health insurance and PTO do not apply.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Polish Language Specialist – AI Trainer

English, Polish $6–$65/hour

We’re looking for Polish language specialists who live and breathe Polish phonetics, morphology, syntax, semantics, pragmatics, and sociolinguistics. You’ll challenge advanced language models on topics like noun declension, verb conjugation, sentence structure, word order, aspect, tense, and case systems—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Mathematics Specialist (Fluent in Hindi – Roman Script) – AI Trainer

English, Hindi $6–$65/hour

We’re looking for mathematics specialists who live and breathe algebra, calculus, number theory, linear algebra, differential equations, statistics, geometry, mathematical logic, and discrete mathematics. You’ll challenge advanced language models on topics like real and complex analysis, optimization theory, mathematical proofs, set theory, probability distributions, cryptographic algorithms, and applied mathematics—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on classroom problems and theoretical mathematics questions, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improveme

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Coding Specialist (Fluent in Dutch) – AI Trainer

Dutch, English $8–$65/hour

We’re looking for coding specialists who live and breathe algorithms, data structures, software architecture, frontend and backend development, cloud infrastructure, and systems programming—and who can do so fluently in Dutch. You’ll challenge advanced language models on topics like asynchronous programming, RESTful API integration, memory management, object-oriented design, secure coding practices, and debugging distributed systems—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on software engineering tasks and technical scenarios in Dutch, verify logical accuracy and coding fluency, assess naturalness and correctness of D

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

STEM Specialist (Fluent in Arabic) – AI Trainer

Arabic, English $8–$65/hour

We’re looking for STEM specialists who live and breathe mathematics, physics, chemistry, engineering, data science, computer science, and scientific computing. You’ll challenge advanced language models on topics like thermodynamics, mechanics, calculus, statistics, materials science, electronics, algorithm design, and quantitative modeling—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on real-world STEM problem-solving scenarios and theoretical technical questions, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Turkish Language Specialist – AI Trainer

English, Turkish $6–$65/hour

We’re looking for Turkish language specialists who live and breathe phonology, morphology, syntax, semantics, translation, sociolinguistics, and Turkish linguistic history. You’ll challenge advanced language models on topics like agglutinative verb structure, vowel harmony, suffixation rules, compound word formation, regional dialect variations, idiomatic usage, and contextual nuances—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Chinese Language Specialist – AI Trainer

Chinese, English $6–$65/hour

We’re looking for Chinese language specialists who live and breathe the complexities of Chinese grammar, syntax, morphology, semantics, phonetics, and pragmatics. You’ll challenge advanced language models on topics like tonal variations, Simplified vs. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Dutch Language Specialist – AI Trainer

Dutch, English $6–$65/hour

We’re looking for Dutch language specialists who live and breathe Dutch grammar, syntax, morphology, spelling, phonology, and pragmatics. You’ll challenge advanced language models on topics like verb conjugation, sentence structure, formality levels, regional dialects, word order, and the nuances of Dutch writing systems—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Mandarin Chinese Language Specialist – AI Trainer

Chinese, English $8–$65/hour

We’re looking for a highly skilled Mandarin Chinese language specialist who can bring linguistic depth, cultural context, and precision to training data. You’ll work with cutting-edge AI tools, evaluate and refine Mandarin Chinese text outputs, and provide expert feedback on grammar, syntax, semantics, style, and cultural appropriateness to strengthen model performance. On a typical day, you will review and annotate Mandarin Chinese content, assess AI-generated outputs for accuracy and fluency, identify and document error patterns, and collaborate with our team to refine prompts, evaluation methods, and linguistic guidelines.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Hindi Language Specialist – AI Trainer

English, Hindi $6–$65/hour

We’re looking for Hindi language specialists who live and breathe Hindi grammar, syntax, morphology, phonology, semantics, and pragmatics. You’ll challenge advanced language models on topics like verb conjugation, noun declension, sentence structure, regional dialects, idiomatic expressions, and formal versus informal speech—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model on language scenarios, verify factual accuracy and logical soundness, capture reproducible error traces, and suggest improvements to our prompt engineering and evaluation metrics.

Last verified 2026-10-28
View role
Meridial / Invisible Technologies

Dutch (Suriname/Caribbean) Language Specialist – AI Trainer

Dutch, English $8–$65/hour

We’re looking for Dutch (Suriname/Caribbean) language specialists who live and breathe grammar, orthography, regionalisms, pronunciation patterns, idiomatic expressions, and cultural references unique to these regions. You’ll challenge advanced language models on topics like colloquial usage, contextual interpretation, tone adaptation, syntactic accuracy, and semantic precision—documenting every failure mode so we can harden model reasoning. On a typical day, you will converse with the model in Dutch as used in Suriname and the Caribbean across a wide range of topics, verify linguistic accuracy and cultural relevance, capture reproducible error traces, and suggest improvements to our prompt

Last verified 2026-10-28
View role
​