Senior back-end Engineer.

Senior Developer? Work Remote. Get Paid Well. Build What Matters. Lemon.io connects hand-picked senior developers with vetted startups across the US and Europe — no bidding wars, no ghosting, just serious opportunities. We're currently hiring for a research-driven AI company on a mission to slash the cost of modern AI — co-designing hardware, software, algorithms, and models to make AI's benefits accessible to everyone. They're active open-source contributors, building the infrastructure behind next-generation AI at scale. Open roles: Senior Back-end Engineer (Golang), Senior DevOps Engineer, Senior Site Reliability Engineer, Senior Storage Engineer, Senior Python & LLM Developer, Senior Back-end Engineer (Python) Why this one's worth a look: You'll be working on infrastructure that directly shapes how AI gets built and deployed, at a company operating at the frontier of the field. Locations: the UK, Singapore, the US, and Canada. Requirements for Senior Back-end Developers: 5+ years of software development experience 3+ years of experience with Golang and/or Python 2+ years of experience with Kubernetes 2+ years of experience with AI agent development Not your stack? We're placing Senior Developers (4+ yrs commercial experience) across AI Agent Architecture, AI Automation Architecture, AI Engineering, Site Reliability Engineering, Platform 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 & Angular, 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, Data Annotation, Angular, Python & Node, React & Node.js, 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 work with developers across 75+ countries in Europe, Latin America, North America, select Asian markets (Japan, Singapore, South Korea, Philippines, Indonesia, Malaysia, Vietnam, Thailand, Israel), Oceania (Australia, New Zealand, Papua New Guinea), and Africa (including Morocco, South Africa).