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 integral 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 global 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 vouchers, transport, childcare support, private health insurance). Well-being:

Our

WeCare

program supports employees in critical life situations. Personal Development:

Annual training budget to continuously boost your skills. We believe in a transparent and candidate-friendly hiring experience: Initial Call

with our recruitment team to align expectations and profile. First Interview:

Deep dive into your experience and project alignment. Second Interview:

Meet with a technical expert to assess technical and AI/LLM experience. Client Interview:

Get to know the client and project details. Final Conversation:

Final alignment and offer discussion. Ready to Make an Impact? Apply now and join a team that is shaping the future of technology through

backend excellence and AI innovation . Diversity & Inclusion At

Amaris Consulting , we celebrate diversity and are committed to creating an inclusive environment. All qualified candidates are welcome, regardless of gender, sexual orientation, race, ethnicity, age, or any other characteristic.

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📌 Desarrollador de back-end (Madrid)
🏢 Amaris Consulting
📍 Madrid