full-stack developer for supplier intelligence

Lemon.io; Madrid; Hybride; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Relocation bonus

Monthly benefits

Résumé du poste

Lemon.io is hiring a Senior Full-Stack Developer to shape a supplier intelligence product inside the company's serverless development platform. You will work in-house, with relocation to Madrid and a small agile squad of 4-6 people.

You will design and build full-stack features using Node.js/TypeScript on the backend and React on the frontend, while mentoring juniors and contributing to technical strategy. Strong English and work authorization for Spain are required.

Qualifications

• 5+ years of full-stack development with Node.js / TypeScript and React.
• Hands-on experience with AI-assisted development and agentic, AI-driven engineering workflows.
• Strong web services / REST integration experience and Git.
• A product mindset - you think about user experience, business impact and scalability.
• Comfort with agile sprints and fast iteration.
• English at C1 level.
• Legal existing right to work in Spain: EU citizenship or an alternative granting a right to work in Spain (visa sponsorship is not available)

Responsabilités

• Design, build and optimize full-stack features with Node.js and TypeScript on the backend and React on the frontend
• Own the architecture and design of TypeScript-based solutions, optimizing for performance, reliability and UX
• Work closely with product managers, designers and engineers to define and ship features
• Keep quality high through code reviews, automated testing and CI/CD
• Contribute to technical strategy and mentor junior developers

Connaissances

Node.js / TypeScript

React

AI-assisted development

REST APIs

Git

Product mindset

Agile

Description du poste

Описание

Lemon.io is hiring on behalf of a fast-growing SaaS company that helps around 2,500 businesses in 50+ countries bring transparency, compliance, and efficiency to their supply chains. This is an in-house, direct-hire role suggesting relocation to Madrid. As a Senior Full-Stack Developer you'll shape a supplier intelligence product inside the company's enterprise-grade, serverless development platform. You'll build features that automate complex compliance and ESG workflows for international clients, working in a small agile squad of 4-6 people.

Задачи

• Design, build and optimize full-stack features with Node.js and TypeScript on the backend and React on the frontend
• Own the architecture and design of TypeScript-based solutions, optimizing for performance, reliability and UX
• Work closely with product managers, designers and engineers to define and ship features
• Keep quality high through code reviews, automated testing and CI/CD
• Contribute to technical strategy and mentor junior developers

Требования

• 5+ years of full-stack development with Node.js / TypeScript and React
• Hands-on experience with AI-assisted development and agentic, AI-driven engineering workflows
• Strong web services / REST integration experience and Git
• A product mindset - you think about user experience, business impact and scalability
• Comfort with agile sprints and fast iteration
• English at C1 level
• Legal existing right to work in Spain: EU citizenship or an alternative granting a right to work in Spain (visa sponsorship is not available)

Будет плюсом

German or Spanish is a plus

Условия

• Full-time contract, hybrid in Madrid (3 days/week in the office)
• Competitive salary plus monthly benefits
• Relocation bonus for candidates open to moving to Madrid