Senior Full Stack Developer (Node.Js & React)

Are you a versatile engineer who thrives at the intersection of robust backend architecture and seamless frontend user experiences? We are looking for a Senior Full-Stack Engineer (Node.Js & React) to join a high-caliber team building scalable, greenfield platforms from the ground up. This is a unique opportunity to own end-to-end feature development, tackle high-load data challenges, and directly influence the trajectory of a cutting-edge product.

¿Le interesa este puesto? Puede encontrar toda la información relevante en la descripción a continuación.
About the Client

Our partner is an elite tech company building product engineering across Fintech, iGaming, and Marketing. They turn innovative ideas into high-performing engines and launch them at scale. As their exclusive recruitment partner, Lionhires manages their full-cycle talent acquisition.

What You Will Do

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• Architect and Build: Drive the end-to-end development of an in-house platform, taking new features from initial concept to deployment.
  
• Scale & Optimize: Design high-performing microservices capable of handling heavy traffic, utilizing RabbitMQ and Redis for optimal message queuing and caching.
  
• Integrate Systems: Seamlessly connect complex, third-party APIs with our proprietary Fintech solutions.
  
• Ensure Quality: Write clean, maintainable, and test-driven (TDD) code in TypeScript across both NestJS and NextJS frameworks.
  
• Collaborate Efficiently: Participate actively in an Agile/Scrum environment, contributing to bi-weekly sprints, grooming sessions, and strategic planning.
  

What You Bring

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• Deep Web Expertise: 5+ years of commercial web development experience, with a proven track record of delivering production-grade applications.
  
• Full-Stack Mastery: 3+ years of dedicated, commercial experience with both Node.Js and React .
  
• Modern Tech Stack: Hands-on experience with TypeScript, NextJS, NestJS, Apollo, and Material UI.
  
• Data & Architecture: Strong proficiency with REST, GraphQL, WebSockets, and managing high-load SQL/NoSQL databases (specifically MySQL and MongoDB).
  
• Engineering Best Practices: A solid understanding of microservice architecture, TDD principles, and Git version control.
  
• Communication: Upper-intermediate to fluent English communication skills (written and spoken).
  

Bonus Points For

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• 2+ years of hands-on experience with CI/CD pipelines, Docker, and Kubernetes.
  
• Deep familiarity with various queue brokers (RabbitMQ, Apache Kafka, etc.).
  

What's in It for You

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• Competitive Compensation: An attractive salary package with structured annual reviews to reward your growth.
  
• Seamless Relocation: A comprehensive relocation package covering your flights and a 2-week hotel stay to get you settled.
  
• Legal Peace of Mind: Official EU/Spain employment contract, including sponsorship and registration support for your family members.
  
• Work-Life Balance: 23 working days of annual vacation to ensure you stay refreshed and energized.
  
• Continuous Growth: Dedicated budget for professional learning, development opportunities, and partial compensation for language classes. xhfqzwm
  
• Vibrant Culture: Team-building activities, birthday gifts, and access to an upcoming Social Club featuring over 50 events per year.
  

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