Senior Backend Engineer — Scalable, AI‑Powered Platform (Flexible Hours)

Nalanda Global; Madrid; Presencial; EUR 40.000 - 65.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible working time

Teleworking

Intensive summer hours

Flexible benefits

Growth and development opportunities

Descripción de la vacante

Nalanda Global is seeking a Senior Backend Engineer to design and evolve our backend platform in Madrid. You will own key domains, drive architecture decisions, and mentor peers in a fast-paced, AI-enabled product team.

You will build services with Java and Spring Boot, optimize performance, ensure reliability, and contribute to observability and deployment automation. The role includes teleworking, flexible hours, and a competitive salary of €40,000–€65,000 gross per year.

Formación

• Deep expertise in Java, Spring Boot, and the broader Spring ecosystem.
• Strong understanding of backend architecture, distributed systems, concurrency, and scalability patterns.
• Experience with SQL databases (PostgreSQL preferred) and Redis.
• Proven ability to design and consume REST APIs with solid error handling, versioning, and documentation practices.
• Advanced proficiency with Git and collaborative development workflows.
• Strong experience writing unit, integration, and performance tests (JUnit, Mockito, etc.).
• Practical experience with CI/CD pipelines and deployment automation.
• Strong knowledge of Docker and container-based development environments.
• Ability to mentor other engineers and elevate the technical quality of the team.
• Strong communication and decision-making skills.
• (Optional) Exposure to additional backend languages (Node.js, Python, Go).

Responsabilidades

• Design, build, and maintain backend services, APIs, and critical platform components using Java and Spring Boot.
• Lead the design of scalable solutions, ensuring alignment with engineering principles and long-term architectural goals.
• Take ownership of complex technical problems, driving initiatives from concept to production.
• Optimize services for performance, scalability, security, and fault tolerance.
• Define and maintain high standards for code quality, testing, observability, and documentation.
• Guide and mentor Junior and Semi Senior engineers through code reviews, design discussions, and technical feedback.
• Collaborate with cross-functional teams to influence product direction and technical strategy.
• Contribute to architecture decisions involving databases, caching, messaging, and distributed systems.
• Improve and extend observability practices (logging, metrics, tracing, alerting).
• Ensure smooth operation of production systems, participating in incident resolution and root-cause analysis.
• Use AI-powered development tools to enhance delivery speed, code quality, and team productivity.
• Identify opportunities for refactoring, modernization, and technical debt reduction.

Conocimientos

Java

Spring Boot

Distributed systems

REST APIs

Git

Unit testing

Herramientas

PostgreSQL

Redis

Docker

Kubernetes

Descripción del empleo

Nalanda Global is seeking a Senior Backend Engineer to design and evolve our backend platform in Madrid. You will own key domains, drive architecture decisions, and mentor peers in a fast-paced, AI-enabled product team.

You will build services with Java and Spring Boot, optimize performance, ensure reliability, and contribute to observability and deployment automation. The role includes teleworking, flexible hours, and a competitive salary of €40,000–€65,000 gross per year.