Node.Js/Nest.Js expert

Are you a Senior Backend Engineer who thrives on building high-performance architectures and scaling complex systems from scratch? We are looking for a Node.Js/Nest.Js expert to spearhead the development of our core, in-house platform, driving innovation across high-load environments. If you want to own your code, work with cutting-edge microservices, and make a tangible impact on a rapidly growing ecosystem, this is your next big move. ¿Interesado en saber más sobre este trabajo? Desplácese hacia abajo y descubra qué habilidades, experiencia y cualificaciones académicas se necesitan. About the Client Our partner is a 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 Architect and develop the core in-house platform, taking new, high-impact features from initial concept to production scale. Design and implement robust microservices and build seamless integrations with various third-party APIs. Optimize database performance for high-load systems, working extensively with both SQL and NoSQL solutions. Champion code quality by applying TDD (Test-Driven Development) principles and writing comprehensive automated tests. Collaborate cross-functionally to ensure scalability, reliability, and high availability across all backend services. What You Bring Deep Backend Expertise: 5+ years of commercial web development experience, with a heavy focus on Node.Js and Nest.Js. High-Load Database Management: Proven experience handling high-load database environments, specifically using MongoDB and MySQL. Advanced Communication Protocols: Practical experience implementing RESTful APIs, GraphQL, and WebSockets. Message Brokers & Caching: Hands-on experience working with RabbitMQ and Redis (experience with Nats is a plus). Architectural Mastery: Solid understanding of microservice architecture and version control via Git. Quality & Testing Mindset: Strong grasp of TDD principles and a habit of writing clean, testable code. Language Skills: Professional working proficiency in English (Intermediate level or higher). Nice-to-Haves 2+ years of hands-on experience working with CI/CD pipelines, containerization, and microservices. Direct experience with Kubernetes. What's in It for You Financial Growth: Highly competitive salary with structured annual compensation reviews. Full Relocation Support: A complete relocation package including covered flight tickets and a 2-week hotel stay upon arrival. Legal Peace of Mind: Official EU/Spain employment contract, including registration and support for your family members. Work-Life Balance: 23 working days of paid annual vacation to ensure you rest and recharge properly. Professional Development: Continuous learning opportunities, challenging tasks, and language development support with partial class compensation. xhfqzwm Culture & Community: Vibrant team-building activities, custom birthday gifts, and access to our upcoming Social Club featuring over 50 events per year.