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Lemon.io helps companies in the US and Europe hire experienced engineers, from funded startups to teams like Klarna, Retool, and Pinterest. We’ve been doing this since 2015, and more than 1,500 companies have hired engineers through us. New roles for senior AI engineers come in all the time, and several are open right now. Two ways to work with clients Contract: most roles are contract-based. You join the client’s team and work as part of it. Direct hire: some clients hire engineers full-time, and we support you through the process. Because companies trust our vetting, applying through Lemon.io is often a shortcut. You get to the client faster than going through their full hiring process on your own. What you get Competitive rate, based on your seniority and skills We find the projects. No client hunting or rate negotiations. We match you manually based on your skills and preferences. Flexible schedule. Work async or with a small overlap with the team’s hours. No micromanagement, no screen trackers Direct work with clients, most of them with technical backgrounds Ongoing support from your application through every project, plus a community of engineers from [75+] countries Who we’re looking for AI Engineer: 3+ years of commercial experience applying AI to practical technology solutions A solid understanding of Python is a must; experience with other programming languages commonly used in AI is a plus Experience with Vector Databases, Pinecone or Weaviate is required 2+ years of experience with LangChain is mandatory 2+ years of experience with large language models (LLMs) or vLLMs is mandatory 2+ years of experience with RAG or OpenAI is required AI Agent Architect: 3+ years of experience with Python 3+ years of experience with LLM Experience with Multi-agent systems architecture, AI agent orchestration, AI telemetry is a must. AI Automation Architect: 1+ year of experience with Workflow Automation and Webhooks 3+ years with SQL is a must Familiarity with AI API integration and Claude Cowork is a must Knowledge of Make.com/n8n/Zapier   You own problems end-to-end: you spot the issue, design and build the solution, and ship it to production You can show the business impact of your work with concrete results (e.g., faster processing, lower costs, more users, fewer incidents) Advanced English: you discuss business tasks, explain your decisions, raise issues early, and present yourself and your results well on client calls You work full-time remotely and deliver without supervision You onboard quickly and start shipping in your first weeks   How it works Apply and complete your profile Verify your role Once approved, we match you with a project. Typical time to first project: 3 weeks Ready? Apply and join the Lemon.io community.   NOT YOUR TECH STACK? We're placing Senior Developers (4+ yrs commercial experience) across Site Reliability Engineering, Platform Engineering, Enterprise Software Engineering, React & Python, React & Golang, Golang, React & Java, React & Ruby, Ruby, PHP & Vue, Vue & Node.js, React & .NET, Android & iOS, iOS & Swift, Flutter & Firebase, Solutions Engineer, Blockchain (Ethereum/Ethers.js/Wagmi/Viem/Solana), Angular & Node.js, Vue & .NET, Python & Vue, DevOps, MLOps, Data Science, Angular & PHP, Angular & .NET, Symfony & React, Symfony & Vue, Symfony & An gular, Python, Symfony & JavaScript & Next.js & TypeScript, Data Analysis, React & PHP, Data Engineering, Project Management, Product Management, QA Automation, QA Manual, Embedded Software Engineering, React Native & Node, React Native & React, React Native & Ruby, React Native & Python, WordPress, Android, Angular, Python & Node, React & Node.js, Node & TypeScript, Java & Spring, Svelte & Python, Svelte & Node.js, Svelte & TypeScript, Rust, Shopify & JavaScript, Vue & Nuxt, PHP & Laravel, UI/UX Design, Animation, Graphic Design, React & Node & React Native, .NET & C#, Electron, Scala, C++, Unreal Engine & C++, Python & LLM, Unity, or Machine Learning Engineering and more. Reach out and we'll match you.   We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire. We work with developers from 75+ countries across Europe, Latin America, North America (the U.S. and Canada), selected countries in Asia (Japan, Singapore, South Korea, the Philippines, Indonesia, Malaysia, Vietnam, Thailand, and Israel), Oceania (Australia, New Zealand, and Papua New Guinea), and Africa (including Morocco and South Africa).