Freelance Annotator (English) - AI Trainer
Toloka AnnotatorsJob Description
About the Role
Annotation is what helps AI make sense of the world. As an annotator, you may be invited to take part in online projects such as rating AI-generated content, evaluating factual accuracy, or comparing responses - when projects are available.
Responsibilities:
- Carefully review provided data (text, images, or videos)
- Label or classify content based on project guidelines
- Identify and flag factually incorrect, sensitive, inappropriate, or unclear material
- Important note: This is project-based work. Tasks are available only when projects are active. You may be invited to one or more projects depending on your profile and current opportunities.
- Each project has its own compensation level based on scope and expertise required. On this project, AI trainers earn up to $17 per hour equivalent.
Why this freelance opportunity might be a great fit for you?
- Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments.
- Work on advanced AI projects and gain valuable experience that enhances your portfolio.
- Influence how future AI models understand and communicate in your field of expertise.
Get notified of similar jobs
We'll send you an email when jobs similar to "Freelance Annotator (English) - AI Trainer" are posted.
Related Jobs You Might Like
View all jobs →
Freelance Full-Stack Web App Developer
Mindrift
About MindriftMindrift is a platform connecting specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.About the RoleThis is a freelance role for the Tendem project. As a Full-Stack Web App Developer (AI Pilot), you will design, build, and refine browser-based applications with real logic, state, persistence, and user input — ranging from habit trackers and budgeting tools to internal dashboards, mini-SaaS tools, and AI-powered apps. You may also work on standalone Python applications and data-processing scripts.Key ResponsibilitiesBuild interactive web applications with frontend (React, Next.js, Vue, or similar) and a backend API (Python/FastAPI/Flask or Node/Express).Design and implement data models, schemas, and persistence layers using SQL (PostgreSQL, SQLite) or NoSQL stores.Implement authentication, sessions, and basic role-based access where needed.Integrate third-party APIs and AI/LLM services (OpenAI, Anthropic, or similar) into product features.Handle state management, user input validation, error states, and loading states cleanly.Build standalone Python tools and scripts where required (data processing, API clients, lightweight backend utilities).Evaluate AI-generated full-stack code and refactor it for correctness, security, performance, and maintainability.Write clear, testable code and debug end-to-end issues across frontend, backend, and database.RequirementsAt least 3 years of relevant experience in full-stack web development or shipping interactive web applications (required).Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus.Strong command of JavaScript/TypeScript and at least one modern frontend framework (React, Next.js, Vue, Svelte, or similar).Solid backend experience in Python (FastAPI, Flask, Django) and/or Node.js (Express, NestJS).Hands-on experience with relational databases (PostgreSQL, MySQL, SQLite) and basic schema design.Experience implementing REST APIs, request validation, error handling, and authentication flows.Familiarity with deployment platforms (Vercel, Netlify, Render, Fly.io, Railway, or similar).Experience integrating LLM APIs or other AI services into product features is a strong plus.Comfortable with version control (Git) and basic testing practices.Portfolio of shipped web applications (required).Strong attention to detail and commitment to building working, robust products.Self-directed work ethic with the ability to architect, build, and ship features independently.Strong English communication skills.BenefitsPart-time remote flexibility.Work on cutting-edge AI projects with major tech innovators.Global collaboration with specialists across the world.Professional growth in AI-assisted software engineering.
Freelance Mobile App Developer (iOS / Android)
Mindrift
About MindriftMindrift is looking for skilled Mobile App Developers (React Native, Flutter, Swift, or Kotlin) to join the Tendem project (tendem.ai) and build native and cross-platform mobile applications within our hybrid AI + human environment. In this role, as an AI Pilot, you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide mobile engineering expertise, platform-specific judgment, and quality control to ensure apps are stable, performant, and ready for real users on real devices.This part-time remote opportunity is ideal for professionals with hands-on experience shipping iOS and/or Android apps, working with platform APIs, and handling the full mobile development lifecycle.What We DoThe Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.About the RoleThis is a freelance role for a Tendem project. As a Mobile App Developer, you'll design, build, and refine mobile applications across categories such as utilities, fitness/wellness, games, productivity, delivery, and content apps — for iOS, Android, or both, using native or cross-platform frameworks.Key ResponsibilitiesBuild mobile applications using React Native, Flutter, Swift (iOS), or Kotlin (Android)Implement responsive mobile UIs that follow platform conventions (iOS HIG, Material Design)Integrate native device features (camera, push notifications, location, storage, biometrics)Connect apps to backend APIs, handle offline state, caching, and synchronizationImplement monetization features where required (in-app purchases, ads, subscriptions)Evaluate AI-generated mobile code and refactor it for correctness, performance, battery use, and maintainabilityDebug platform-specific issues and prepare builds for distribution (TestFlight, Play Console)RequirementsAt least 3 years of relevant experience in mobile app development (required)Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plusHands-on experience with at least one of: React Native, Flutter, Swift/SwiftUI (iOS), or Kotlin/Jetpack Compose (Android)Solid understanding of mobile UI patterns, navigation, state management, and platform guidelinesExperience integrating REST APIs, handling async data, and managing local storageFamiliarity with native device APIs (notifications, camera, location, storage, biometrics)Experience with mobile build tools, code signing, and submission to App Store / Google PlayStrong attention to detail and commitment to performance, stability, and platform polishSelf-directed work ethic with the ability to ship complete mobile features independentlyPortfolio of shipped mobile apps (required, with App Store / Google Play links preferred)English proficiency: Upper-intermediate (B2) or above (required)Nice to HaveExperience implementing in-app purchases, ads, or subscriptionsFamiliarity with backend services such as Firebase, Supabase, or similarProject Time ExpectationsTasks are estimated to require around 10–20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active.
Chatbot Developer (WhatsApp, Telegram, Discord) - Freelance
Mindrift
Mindrift is looking for skilled Bot Developers (WhatsApp Business API, Telegram Bot API, Discord API) to join the Tendem project (https://tendem.ai/) and build conversational bots and messaging-platform integrations within our hybrid AI + human environment. In this role, as an AI Pilot – that's how we refer to this position at Mindrift – you'll collaborate with Tendem Agents that handle repetitive tasks, while you provide bot engineering expertise, conversational design judgment, and quality control to ensure bots are reliable, useful, and ready for real users. This part-time remote opportunity is ideal for professionals with hands-on experience building messaging bots, working with platform APIs and webhooks, and implementing conversational logic.What We DoThe Mindrift platform connects specialists with AI projects from major tech innovators. Our mission is to unlock the potential of Generative AI by tapping into real-world expertise from across the globe.About the RoleThis is a freelance role for a Tendem project. As a Bot Developer, you'll design, build, and refine messaging bots for one or more messaging platforms, including WhatsApp, Telegram, Discord, Slack, and similar platforms — for use cases such as customer service, appointment booking, order taking, content delivery, moderation, and automated notifications.Key ResponsibilitiesBuild bots for one or more messaging platforms, such as WhatsApp (Business API / Cloud API), Telegram (Bot API), Discord, Slack and similar messaging platforms.Design and implement conversational flows, dialogue state, and fallback handling.Integrate bots with LLMs (OpenAI, Anthropic, or similar) for natural language responses where appropriate.Connect bots to backend services, databases, CRMs, and third-party APIs (booking systems, payment, content sources).Handle webhooks, rate limits, and platform-specific message formats (interactive messages, buttons, media, templates).Evaluate AI-generated bot code and refactor it for correctness, reliability, and graceful error handling.Implement logging, monitoring, and recovery so bots stay healthy in production.Requirements and BenefitsEducational qualificationsAt least 3 years of relevant experience backend, integration, automation, or bot development experience (required).Bachelor's or Master's Degree in Computer Science, Engineering, Information Technology, or related technical fields is a plus.Academic and/or Professional ExperienceCandidates should have a strong foundation in bot development, messaging platform integrations, and building reliable conversational workflows. We are looking for specialists who can design and maintain production-ready bots, work confidently with APIs, webhooks, and backend services, and refine AI-assisted output into stable, user-friendly experiences. Strong problem-solving skills, attention to detail, and the ability to work independently are essential.Technical Skills (Essential)At least 1 year of hands-on experience building bots for at least one major messaging platforms (WhatsApp, Telegram, Discord, Slack, or similar) is requiredStrong command of Python or Node.js for backend bot logic.Solid experience with REST APIs, webhooks, OAuth, and async request handling.Experience with relational or NoSQL databases for storing conversation state and user data.Familiarity with LLM APIs (OpenAI, Anthropic) and prompt design for conversational use is a strong plus.Understanding of platform-specific limits, message templates, and approval flows (e.g., WhatsApp template messages).Experience with hosting and deployment (Docker, serverless, VPS, or PaaS)Additional requirementsStrong attention to detail and commitment to bot reliability — no silent failures, no broken flows.Self-directed work ethic with the ability to design and ship complete bots independently.Portfolio or examples of bots you've built (required).English proficiency: Upper-intermediate (B2) or above (required).