Senior Fullstack Developer (React / Next to Node.JS)
We’re looking for a Senior Fullstack Engineer with deep expertise in React and Next.Js to join our team. You’ll be hands-on in designing and developing features across the stack—from frontend to backend services and database architecture—while ensuring scalability, maintainability, and performance. If you have React Native experience, that’s a huge plus as we maintain several mobile apps that would benefit from your skills. Our current stack includes React, Next.Js, Node.Js, NestJS, PostgreSQL, and integrations with headless commerce platforms like MedusaJS.
What you will be doing
* Design and implement high-quality, scalable frontend features with React and Next.Js
* Collaborate with designers, product managers, and engineers to deliver seamless user experiences
* Contribute to backend development with Node.Js (NestJS preferred)
* Model and optimize databases with PostgreSQL (schemas, queries, migrations)
* Define system architecture, feature design, and data flow across the stack
* Integrate APIs and work with headless commerce platforms like MedusaJS
* Write clean, maintainable, and well-tested code
* Mentor and guide mid-level and junior developers
* Take ownership of features from concept through production
Job requirements
* 5+ years of professional web development experience
* Deep expertise in React and Next.Js (SSR, SSG, routing, performance tuning)
* Strong in JavaScript/TypeScript
* Hands-on with Node.Js (NestJS is a strong plus)
* Solid knowledge of PostgreSQL (schemas, queries, optimization)
* Experience with system design, feature architecture, and data flow modeling
* Comfortable with REST and/or GraphQL APIs
* Familiarity with eCommerce frameworks like MedusaJS (or Shopify Headless, Saleor)
* Strong problem-solving skills and ability to thrive in a fast-paced, collaborative environment
* Excellent communication skills in English
Nice to have
* Production experience with React Native
* Experience with headless commerce ecosystems
* Exposure to Docker, CI/CD pipelines, and AWS
* Contributions to open-source projects
What we offer
* A competitive salary package
* Opportunities for professional growth
* A diverse role within a dedicated international team
* Office with an amazing view of the beach
* Health insurance
* Free Spanish classes and afterwork sports activities
About MultiSafepay
MultiSafepay is a leading payment service provider, offering omnichannel and advanced payment solutions to businesses across Europe. We are innovative and fast-growing, building powerful solutions that transform how our clients do business. We focus on delivering real solutions to their challenges and always stay ahead of the curve. In short, we are a true FinTech. Join our dynamic team at our international office in Estepona, Málaga, and be a part of our journey towards global success.
We are not accepting applications or referrals from recruitment agencies for this position. Any unsolicited resumes will not be considered.
Seniority level
* Mid-Senior level
Employment type
* Full-time
Job function
* Engineering and Information Technology
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