Mercor
Expert projects for AI labs across software, finance, law, medicine, science and languages.
Pay figures cover the 291 open jobs that publish an hourly rate in USD. They are published rates, not a guarantee of income. Last checked on October 8, 2026.
You apply on work.mercor.com: create a profile, complete a skills assessment, then get matched to projects that fit your background.
Official site: mercor.com. SideHustler is independent of Mercor.
This role consists of creating and critiquing evaluation frameworks to analyze marketed drugs and pharmaceutical development programs. You will bring your expertise in market access and pricing to validate gross-to-net margin, rebate and formulary placement assumptions, drawing on your knowledge of real payer behavior.
Posted August 5, 2026
Expert evaluation role for a biotechnology and pharmaceutical research project. You will create and critique analysis frameworks for commercial drugs and pharmaceutical development programs, with particular emphasis on launch models and commercial forecasting. This role is for an experienced professional in pharmaceutical commercial forecasting.
Posted August 5, 2026
You are a native English speaker based in the United Kingdom with a neutral and standard British English accent. You will record high-quality voice samples as part of developing advanced speech synthesis systems. Your recordings will be used exclusively for training a customer service AI agent and may be used for voice cloning.
Posted August 5, 2026
This role involves evaluating advanced AI systems on their ability to analyze complex cybersecurity scenarios, identify vulnerabilities and propose exploits. The ideal candidate is an experienced offensive security researcher with publicly recognized technical contributions and deep expertise in vulnerability research and security engineering.
Posted August 4, 2026
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
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
This role is for engineers who have built and deployed search systems, particularly in the context of AI agents and large language models. You will be evaluated on your hands-on experience in relevance optimization, impact assessment, and the technical trade-offs you have had to make in real-world systems.
Posted August 1, 2026
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
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
This role involves testing the limits and vulnerabilities of conversational AI models using adversarial techniques to identify security risks. You generate high-quality data that enables clients to improve the robustness and reliability of their AI systems. The ideal profile masters red teaming, structured adversarial thinking, and the ability to reproducibly document discovered flaws.
Posted July 30, 2026
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
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
You join a team dedicated to adversarial testing of conversational AI models, identifying their vulnerabilities to malicious inputs, manipulations, and biases. This role consists of generating high-quality training data to strengthen the robustness and security of AI systems. You are ideally a red teaming expert with prior experience in adversarial security testing and fluent proficiency in English and Norwegian.
Posted July 30, 2026
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
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
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
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
You are a native English speaker with an authentic Australian accent and have professional or semi-professional recording equipment. This job involves recording high-quality voice samples on varied scripts for the training and evaluation of next-generation voice synthesis systems. Your voice will be cloned and used exclusively for a customer experience AI agent.
Posted July 30, 2026
This is a remote voice recording role for native Swiss German speakers who will read varied scripts to help build text-to-speech voices for an AI customer service agent. Experienced voice performers and newcomers with a clear, expressive voice and a suitable home recording setup are both welcome, and onboarding happens on a rolling basis.
Posted July 30, 2026
Mercor is recruiting experienced data scientists to join a talent network designed to evaluate the capabilities of AI systems to perform data science work. Future roles will primarily involve designing precise evaluation criteria and assessing data science deliverables according to established standards. This role is suited for professionals who have worked in top-tier organizations and master analytical best practices.
Posted July 29, 2026
Add your resume once. Every open job is scored against your profile, and we email you only when a strong match appears. Free.
FAQ
305 Mercor jobs are open on SideHustler today. 10 were posted in the last 7 days. Listings are rechecked against the official postings: the latest check on this list was on October 8, 2026.
Among the 291 open roles that publish an hourly rate in USD, pay runs from $10 to $380 per hour, with a median of $75. These are the rates the platforms publish, not a guarantee of income or hours.
The most requested areas of expertise on these listings are AI Evaluation, Red Teaming, Adversarial Testing, Multilingual Expertise, Vulnerability Assessment. Each listing states its own requirements.
You apply on work.mercor.com: create a profile, complete a skills assessment, then get matched to projects that fit your background.
It depends on the job. 301 of the 305 open Mercor jobs publish the countries they accept, and each listing shows them. The others do not publish a country list.
No. SideHustler is independent of Mercor. We list its public postings and send you to the official one to apply. When an Apply link is a referral link, it is marked as such.
Apply now opens the official posting on the platform, where you complete the application. You need no account on SideHustler. To see which roles fit your background first, add your resume and every open job is scored against your profile.