Senior Software Engineer - Pairwise Evaluation
Build the AI infrastructure millions rely on — senior-level engineering, fully remote, and genuinely impactful work....
Expert gig work training and evaluating AI models, aggregated from the marketplaces that actually pay for it.
1,347 open listings across 6 marketplaces, refreshed daily.
Filtering by rate hides per-task listings, which have no hourly equivalent.
42 listings
Clear filtersBuild the AI infrastructure millions rely on — senior-level engineering, fully remote, and genuinely impactful work....
Design, build, test, deploy, and maintain AI software. Develop backend, frontend, APIs, databases, and cloud systems. Debug, optimize, review code, an...
Get paid to challenge AI with expert-level Rust. Shape the future of systems programming — fully remote, flexible hours....
Put your clinical expertise to work shaping the future of healthcare AI. Annotate and review complex EHR data — remote, flexible, and high-impact....
Put your epidemiology expertise to work on meaningful public health challenges. Fully remote, flexible contract — up to $80/hr....
Get paid $50–$75/hr to build the infrastructure powering next-gen AI — Go, Rust, Python, or C++. Fully remote, high-impact, senior-level contract work...
Get paid to build AI infrastructure that matters — senior Rust engineers wanted for high-impact, fully remote contract work with leading AI labs....
Build the infrastructure powering next-gen AI — $50–$75/hr to architect real production systems for leading AI labs. Remote & flexible....
Put your C++ expertise to work on real AI infrastructure — build high-performance systems for leading AI labs. Remote, flexible, and well paid....
Get paid $50–$75/hr to build AI infrastructure that matters. Senior C++ engineers wanted — remote, flexible, and high impact....
Put your C++ expertise to work building the infrastructure powering next-gen AI. Senior engineers wanted — fully remote, flexible, and well paid....
Get paid $50–$75/hr to build AI infrastructure that powers next-gen models. Senior C++ engineers wanted — fully remote, high-impact work....
Build the infrastructure powering next-gen AI — senior C engineers wanted for high-impact data pipeline and tooling work. Remote, flexible, well paid...
Get paid $50–$75/hr to build AI infrastructure that matters — senior C engineers wanted for cutting-edge data pipelines. Fully remote, flexible contr...
Put your C expertise to work building real AI infrastructure. Senior engineers wanted — fully remote, flexible, and well paid....
Get paid $50–$75/hr to build AI infrastructure that shapes the future — senior C engineers wanted for high-impact, fully remote contract work....
Get paid up to $90/hr to teach AI how to write expert-level TypeScript. Remote, flexible, and built for senior frontend engineers....
Build the benchmarks that test the world's most advanced AI models. $80–$100/hr, fully remote, Python experts wanted....
Construa os agentes de IA que escrevem código de forma autônoma. Engenheiros seniores em São Paulo — remoto, flexível e na fronteira da tecnologia....
Engenheiros em São Paulo — construa a infraestrutura de IA que está moldando o futuro. Trabalho remoto, flexível e tecnicamente desafiador....
Ingenieros en Ciudad de México — construye la infraestructura que impulsa la próxima generación de IA. Trabajo remoto, flexible y técnicamente exigent...
Ingénieurs parisiens : construisez les systèmes qui alimentent la prochaine génération d'IA. Contrat 100% remote, travail technique de haut niveau....
Lisbon engineers: build the backbone of next-generation AI from one of Europe's fastest-growing tech hubs. Fully remote contract, serious engineering ...
As a medical writer on this project, you would own a part in multiple workflows: Clinical Data Generation — we need to generate and validate high-quality, synthetic clinical trial…
AI labs need domain experts to write, review and grade the material their models learn from. A radiologist checks a diagnostic explanation, a tax accountant writes the reasoning behind a filing, a backend engineer builds a test environment an agent has to solve. That work is bought through a handful of specialist marketplaces, it is almost always remote, and it is almost always paid by the hour or by the task.
The problem is that the work is scattered. Each marketplace runs its own board, its own titles and its own pay conventions, so finding the roles that fit you means checking six sites and mentally converting between them. This page collects the listings into one feed with one set of filters, refreshed daily, and links each one straight through to the marketplace that posted it.
Search by skill, filter by pay, commitment or experience level, and see every marketplace side by side instead of one board at a time.
Every listing links to the original posting. You apply, onboard and get paid by them directly. Skillora does not sit between you and your earnings.
Most of these marketplaces screen with a recorded or live interview. Run the same interview with Skillora first and get feedback on your answers.
Write and review code, build agent environments, grade model output.
Evaluation design, dataset curation and reinforcement-learning work.
Clinical reasoning, diagnostic review and medical exam authoring.
Contract analysis, case reasoning and jurisdiction-specific review.
Modelling, valuation walkthroughs and accounting treatment review.
Translation, transcription, speech recording and native-fluency review.
Physics, chemistry and biology problem authoring and verification.
Consulting cases, operations workflows and process documentation.
Every listing links back to the marketplace that published it. You apply, onboard and get paid by them directly.
Expert contract work across medicine, law, finance and engineering, mostly hourly and often at the top of the rate range.
See Mercor listings
AI-vetted talent network placing engineers and domain specialists on model-training projects.
See micro1 listingsLarge catalogue of AI training roles, heavily weighted towards software engineering and language work.
See Alignerr listingsDomain verticals with published rates, covering coding, maths, writing and specialist subjects.
See Outlier listings
Task-based annotation and model-response review, with an accessible entry path for new contributors.
See DataAnnotation listingsPaid expert studies and evaluation projects, priced per approved study rather than hourly.
See Terac listingsIt is paid work producing or evaluating the data that AI models learn from. In practice that means writing expert answers in your own field, grading model output against a rubric, building coding or tool environments for an agent to solve, recording speech, or reviewing another contributor’s work. It is contract or task-based rather than salaried, and the marketplaces that buy it recruit for specific domains rather than for general labelling.
Rates vary far more than in a normal job market because they track scarcity of expertise, not seniority. General contributor work sits in the $15 to $30 per hour range. Specialist domains such as medicine, law, quantitative finance and senior software engineering routinely post between $60 and $150 per hour, and some expert roles go higher. Some work is priced per task instead of hourly, in which case we show the task fee as published rather than inventing an hourly equivalent.
Usually not. These roles hire for depth in a subject, not for ML skills, because the whole point is to get expertise into the model that the model does not already have. A practising lawyer or a cardiologist is a stronger candidate for a domain role than a generalist who knows how transformers work. Software engineering roles are the exception, since the work itself is writing and reviewing code.
Almost always. The overwhelming majority of listings in this feed are fully remote and asynchronous, which is why they suit contractors, people between roles and anyone doing this alongside another job. Where a listing states a country restriction we show it on the card, and where it states none we say so plainly rather than claiming it is open worldwide.
Mercor, micro1, Alignerr, Outlier, DataAnnotation and Terac. These are the platforms that publish expert AI-training work openly. We refresh the feed once a day and keep listings that have closed accessible, marked as no longer listed, so a link you saved never dies silently.
No. Browsing and applying are free, and you are never asked for an account to see a listing. Where a marketplace runs a referral programme, Skillora may earn a fee if you sign up and work through our link. It costs you nothing, we say so on every listing where it applies, and it has no effect on how listings are ranked. The ranking code has no knowledge of which sources pay.
Every marketplace screens before assigning work, most of them with an interview that is recorded or run by an AI interviewer, followed by a paid trial task. The screen is the part most candidates underestimate: it is where you have to explain your reasoning out loud in your own domain. Practising that specific format is the single highest-leverage thing you can do before applying.
The screen is usually a recorded or live interview in your own domain, followed by a paid trial task. Run that interview with Skillora before you take the real one and get feedback on how you explained your reasoning, not just on what you said.
Practise the screen free