Data Annotation AI training jobs

U.S based Accountant (CPA/CA)

• Finance & Accounting
• Platform: micro1
• Location: 58 countries

You will contribute to training AI models by using your tax expertise to analyze US sales and use tax laws. The job consists of reading tax statutes, defining precise criteria that AI formal translation must meet, and evaluating the quality of these translations. This role is aimed at accountants or tax specialists with solid experience in state and federal tax law.

Posted August 14, 2026

Video Annotation Expert

• Writing, Creative & Design
• Platform: micro1
• Location: 58 countries

This role consists of annotating and evaluating videos of robots and humans in action to train AI models. You will analyze the quality of automatically generated annotations, compare video sequences, and document your observations according to defined criteria. No prior experience in artificial intelligence is required, only your expertise in the relevant field matters.

Posted August 14, 2026

Preclinical R&D Expert - ADC & Bispecifics

• Science & Research
• Platform: Mercor
• Location: United States
• Level: Expert

This role invites a preclinical research expert to advise an AI and foundation models platform applied to drug discovery. You will bring your experience in developing ADC (antibody-drug conjugate) or bispecific molecules to guide AI tool design, by annotating scientific data and evaluating key development decisions. The role merges your laboratory expertise with a growing understanding of how scientific data drives next-generation AI models.

Posted August 12, 2026

AI Tutor - Croatian

• Languages, Translation & Voice
• Platform: xAI
• Language: Croatian

This remote contract role asks a native Croatian speaker to annotate, record and review multilingual audio clips to help an AI model handle speech recognition and spoken output. It also involves translating and localizing English text into Croatian with attention to natural phrasing and cultural fit. It suits people with strong listening skills, a background in transcription or voice work, and a precise eye for audio quality.

Posted August 7, 2026

Atomistic & Surface Modeling Experts (Computational Materials & Catalysis)

• Data & Machine Learning
• Platform: Mercor
• Location: United States

You will bring your expertise in atomistic modeling and computational chemistry to a cutting-edge AI laboratory in materials science. Your role consists of generating and evaluating high-quality scientific data for training AI models, by applying your in-depth knowledge of surface simulation, adsorption and reaction kinetics. You will contribute directly to improving the scientific reasoning of models on chemical processes and material properties.

Posted August 6, 2026

Atomic Layer Deposition (ALD) Experts

• Science & Research
• Platform: Mercor
• Location: United States

Mercor is seeking Atomic Layer Deposition (ALD) experts and thin film process specialists to support a cutting-edge AI research laboratory developing models for semiconductors and physical sciences. You will contribute your specialized expertise to generate, structure, and evaluate the scientific data used for training and evaluating these advanced models.

Posted August 1, 2026

Inorganic Materials, Semiconductor & Superconductor Experts

• Science & Research
• Platform: Mercor
• Location: United States

Mercor is recruiting scientists and engineers specialized in inorganic synthesis, materials characterization, superconductors and semiconductors to support a cutting-edge AI research laboratory. You will contribute to generating, structuring and evaluating high-quality scientific data intended for model training, by applying your deep expertise to complex problems in materials physics.

Posted August 1, 2026

AI Safety Experts - English & Danish

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Danish

You join a red teaming team specialized in adversarial evaluation of conversational AI models. Your role consists of testing AI systems by exploring their vulnerabilities (jailbreaks, prompt injections, biases), generating high-quality data documenting these vulnerabilities, and producing reproducible reports to strengthen model safety. This position is for bilingual English-Danish experts with prior experience in red teaming or related fields (cybersecurity, adversarial ML, socio-technical analysis).

Posted July 30, 2026

AI Safety Experts - English & Dutch

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Dutch

This role consists of testing the robustness and security of conversational AI models by subjecting them to sophisticated adversarial attacks. You will generate high-quality training data by identifying vulnerabilities, biases, and systemic risks that automated tests do not detect. The ideal profile has prior experience in red teaming, structured adversarial thinking, and the ability to clearly communicate security risks.

Posted July 30, 2026

AI Safety Experts - English & Indonesian

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Indonesian

You will join an adversarial testing team to evaluate the robustness and safety of conversational AI models. Your job is to identify vulnerabilities by generating malicious inputs, annotating failures, and documenting systemic risks to enable clients to improve their AI systems. This role suits experts with experience in security testing and a natural ability to explore the limits of systems.

Posted July 30, 2026

AI Safety Experts - English & Malay

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Malay

This role involves training conversational AI models by testing them adversarially to identify vulnerabilities and improve their safety. You will generate high-quality training data by annotating failures, classifying risks, and documenting reproducible attack cases. The ideal profile has prior experience in red teaming or cybersecurity, and masters a structured and methodical approach to testing the limits of AI systems.

Posted July 30, 2026

AI Safety Experts - English & Portuguese (global)

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Portuguese

Join a red teaming team specialized in AI safety: you will probe conversational models with adversarial attacks, discover vulnerabilities, and generate data that makes AI systems safer. This role, entirely text-based and team-oriented, will allow you to deploy ethical hacking techniques, risk classification, and documentation so that clients can act on identified flaws.

Posted July 30, 2026

AI Safety Experts - English & Swedish

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Swedish

You join a specialized team focused on adversarial evaluation of conversational AI models. Your role is to identify vulnerabilities in these systems by testing them with malicious inputs, then generate the data and reports that will enable clients to strengthen the security of their products. This position requires fluent mastery of English and Swedish, as well as prior experience in adversarial testing or security.

Posted July 30, 2026

AI Safety Experts - English & Thai

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Thai

You will join a red teaming team to test the robustness and security of conversational AI models by simulating adversarial attacks. The role involves generating high-quality training data by identifying vulnerabilities, biases, and abuse cases through structured and documented techniques. This position is for experts capable of thinking like an attacker to strengthen the defense of AI systems.

Posted July 30, 2026

AI Safety Experts - English & Vietnamese

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Vietnamese

You will join a team of adversarial testers tasked with probing conversational AI models to identify security vulnerabilities, biases, and misinformation. The job involves generating high-quality training data by simulating attacks, classifying failures, and documenting systemic risks. This role is for experts who can think like an adversary, structure their testing according to established frameworks, and communicate results clearly.

Posted July 30, 2026

Expert Project Manager

• Business, Consulting & Operations
• Platform: Mercor
• Location: United States

Join a team tasked with driving innovative projects in the field of navigation capabilities for language models. You will manage performance tracking, quality assurance of annotations, and relationships with contributors, taking your projects from end to end with autonomy and rigor.

Posted July 27, 2026

AI Safety Practitioner

• Data & Machine Learning
• Platform: Mercor
• Location: 40 countries
• Level: Expert

This role involves judging how frontier AI models respond to sensitive and ambiguous topics, checking answers for safety, accuracy and policy compliance. It suits experienced professionals from fields such as psychology, law, science or public policy who can apply safety rubrics and give structured feedback to model developers.

Posted July 16, 2026

AI Rater Guidelines Writer (Linguist / Instructional Designer)

• Business, Consulting & Operations
• Platform: Mercor
• Location: United States
• Level: Intermediate

This mission consists of writing and refining annotation guidelines for training state-of-the-art language models. You will transform ambiguous specifications into clear and non-contradictory directives for annotators, working across varied domains such as finance, insurance, and law. This role combines expertise in linguistics, instructional design, and technical writing to ensure the precision and consistency of training data.

Posted July 10, 2026

Finance Program Coordinator - AI Training Data Operations

• Business, Consulting & Operations
• Platform: Mercor
• Location: United States
• Level: Expert

This role involves coordinating data annotation operations for AI training models, with specialization in the financial domain. You will lead collaboration between finance-specialized annotators and the program team, ensuring deadlines and quality standards are met. The ideal candidate combines solid experience in finance or operational management with proven skills in project coordination and team leadership.

Posted July 10, 2026

AI Safety Experts - English & Bengali

• Data & Machine Learning
• Platform: Mercor
• Location: United States
• Language: Bangla

This role involves testing conversational AI models as an AI safety expert by generating adversarial training data to identify vulnerabilities. You will produce reports and structured datasets that enable clients to improve the robustness and security of their AI systems. The ideal profile masters critical content analysis, methodological rigor, and technical communication.

Posted June 4, 2026