Backend Developer Job at Codeway (Barcelona)

Backend Developer

Codeway

Location:
Spain , Barcelona

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Not provided

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Job Description:

We are looking for Backend Developers to join our engineering team. In this role, you will build and maintain the services that power our mobile and web applications used by millions of users globally. Your work will span from designing scalable microservices and APIs to supporting AI-powered features and model deployments. You’ll contribute to highly scaled, performance-critical products where reliability, speed, and clean architecture matter.

Job Responsibility:

Design, develop, and maintain scalable backend services supporting mobile and web clients
Build and evolve microservices and RESTful APIs with clean, maintainable architecture
Deploy, monitor, and support AI models and data-driven services in production environments
Optimize system performance, reliability, and scalability across distributed systems
Collaborate closely with mobile, frontend, AI, product, and DevOps teams to deliver new features end to end
Troubleshoot, debug, and proactively improve system stability and observability
Contribute to code quality through reviews, testing, and documentation

Requirements:

2+ years of professional experience in backend development
Strong proficiency in backend development using Node.js and/or Python
Experience designing and working with microservices architectures and RESTful APIs
Solid understanding of databases, data modeling, and performance optimization
Experience with cloud environments such as AWS, GCP, or Azure
Good grasp of data structures, algorithms, and system design fundamentals
Ability to contribute effectively in high-scale environments handling large volumes of traffic and data
Strong problem-solving skills and attention to detail
Bachelor’s degree in Computer Science, Engineering, or a related field

Nice to have:

Experience with Google Cloud services (e.g., Pub/Sub, Cloud Functions, App Engine) and Firebase
Familiarity with containerization and orchestration tools such as Docker and Kubernetes
Experience with CI/CD pipelines and DevOps best practices
Understanding of backend security principles and secure API design
Exposure to machine learning workflows, model deployment, or AI-related infrastructure

What we offer:

Private health insurance
A generous meal card
Full visa & relocation support if you’re moving to Barcelona
Annual learning & development budget for courses, tools, or events that support your growth
Free access to Codeway’s suite of apps across productivity, wellness, and education
A top-notch office in the heart of the city

Additional Information:

Job Posted:
March 04, 2026

Employment Type:

Fulltime

Work Type:

Hybrid work

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