Senior React & Node Developer

About Lemon.io

Lemon.io helps companies in the US and Europe hire experienced engineers, from funded startups to enterprises. We’ve been doing this since 2015, and more than 1,500 companies have hired engineers through us. 

Position

Are you a talented Senior Developer? Look no further than  Lemon.io, a marketplace that connects you with hand-picked startups and enterprises in the US and Europe.

Currently Lemon.io is seeking a Senior React & Node Developer for a client.
What does our client offer?
A global B2B SaaS company building a cloud platform for supply chain transparency, compliance, and sustainability. The platform uses AI to help enterprises manage supplier data and regulatory obligations across their value chains. The company serves 2,500+ customers in 50+ countries, including leaders in consumer goods, automotive, fashion, pharmaceuticals, and medical products.

Involvement: full-time
Location: Madrid, on-site (hybrid). Relocation bonus is available. Only for candidates with EU citizenship or an equivalent right to work in Spain (visa sponsorship not available)

Your qualification

• 5+ years of experience as a software developer
• 3+ years of experience with Node.js and React.js
• 3+ years of experience with TypeScript
• Familiarity with AI-assisted coding is a must
• Strong product mindset - proven in-house experience in product companies
• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
• Adaptability and flexibility — the ability to onboard onto a project promptly after accepting it and start delivering results quickly.

Additional details

NOT YOUR TECH STACK?
We're placing Senior Developers (4+ yrs commercial experience) across AI Agent Architecture, AI Automation Architecture, AI Engineering, 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 & 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, Angular, Python & Node, 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 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).