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View all jobs →Senior Python Engineer - AI Coding Agent Evaluation (Freelance)
Mindrift
About MindriftMindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment.What This Opportunity InvolvesWe're building a dataset to evaluate AI coding agents - how well a model handles real-world developer tasks. You'll create challenging tasks and evaluation criteria within realistic simulated environments.Build realistic developer environments - a virtual company with codebase, infrastructure, and context (tickets, docs, conversations) that forms a believable development historyDesign tasks from intermediate states of these environments - craft the prompt, define what 'solved' means, and ensure the task is solvable by an AI agentWrite tests that verify agent solutions - accept all valid approaches and reject incorrect ones, neither too strict nor too lenientIterate on tasks and tests based on QA feedback - review agent solutions, analyze failures, and refine until the evaluation is fair and robustWhat This Is NOTNot data labelingNot prompt engineeringNot writing code from scratch - the agent writes most of the code; you guide and evaluateWhat We Look For8+ years in software developmentCore stack: Python (FastAPI), JavaScript/TypeScript (React), Docker, Postgres, Kafka, RedisExperience writing tests (functional, integration)English proficiency - B2+Why This Is HardFrontier models are already good at coding. Creating a task that genuinely challenges the best models is non-trivial. You need to deeply understand where models fail and what scenarios reveal the difference between a good and a bad solution. Tasks have many valid solutions - writing tests that accept all correct solutions and reject incorrect ones is harder than it sounds.How It WorksApply → Pass qualification(s) → Join a project → Complete tasks → Get paidEffort EstimateTasks for this project are estimated to take 30 hours to complete, depending on complexity. This is an estimate and not a schedule requirement; you choose when and how to work. Tasks must be submitted by the deadline and meet the listed acceptance criteria to be accepted.CompensationUp to $200/hr equivalent, depending on level and pace. Tasks are estimated at ~30 hours each; you set your own schedule.Application InstructionsPlease submit your CV in English and indicate your level of English proficiency.
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.