Ready to Take Your Career to the Next Level? Join Amaris Consulting and work on cutting-edge projects that impact thousands of users worldwide. Be part of an international team, thrive in an agile environment, and grow with a global group that truly values innovation, technology, and talent. As a Senior Back-End Developer , you will play a key role in designing and building scalable, high-performance backend systems, with a strong focus on AI-driven solutions. Your work will directly influence integral products used by leading clients across multiple industries.
What You'll Do
Design, develop, and maintain robust backend applications using Node.js and TypeScript . Build scalable APIs and microservices following clean architecture and best practices. Work hands-on with AI-powered solutions , integrating and optimizing Large Language Models (LLMs) in real, production environments. Collaborate closely with product, frontend, data, and AI teams to deliver end-to-end solutions. Contribute to technical decisions, architecture discussions, and continuous improvements.




Mentor junior developers and promote best practices across the team. Stay up to date with backend, cloud, and AI/LLM trends. What We're Looking For 5–7 years of experience as a Back-End Developer . Strong expertise in Node.js and TypeScript . 2–3 years of real, hands-on experience working with AI solutions Solid understanding of backend architecture, RESTful APIs, microservices, and asynchronous systems. Experience with version control systems (Git ) and Agile methodologies.
Excellent soft skills : strong communication, teamwork, and stakeholder collaboration abilities. Ability to work autonomously in distributed, multicultural teams.
Spanish: Native Career Growth: 70% of our senior leaders started in entry-level roles.
Continuous Learning: Access to our Technology Academy, Udemy courses, webinars, and company-paid certifications.
Flexibility: Fully remote position, flexible policies, and social benefits (meal

📌 Desarrollador De Back-End Junior (Barcelona)
🏢 Amaris Consulting
📍 Barcelona