Senior Java Backend Engineer: Build Scalable APIs

Nalanda Global; Madrid; Presencial; EUR 50.000 - 60.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible working time

Intensive working time in summer

Flexible benefits

Descripción de la vacante

Nalanda Global in Madrid, Spain, is seeking a Sr Java Backend Engineer to design and evolve scalable backend architecture using Java and Spring Boot. You will join a product engineering team that leverages AI-powered tooling and modern development practices to deliver robust services.

You will own complex backend domains, drive technical initiatives, mentor peers, and help raise the team’s performance, reliability, and operational excellence across the platform.

Formación

• Solid experience with Java and Spring Boot, including the wider Spring ecosystem.
• A good grasp of backend architecture, distributed systems, concurrency and scalability patterns.
• Experience with SQL databases (PostgreSQL ideally).
• Comfortable designing and consuming REST APIs, with sensible error handling, versioning and documentation.
• A habitual testing practice — unit and integration tests (JUnit).
• Working knowledge of Git, CI/CD pipelines and Docker.
• Willingness and ability to mentor others and raise the technical quality of the team.
• Strong communication and decision-making skills.

Responsabilidades

• Design, build and maintain backend services, APIs and core platform components using Java and Spring Boot.
• Own complex technical problems end to end — from design through to production.
• Lead the design of scalable solutions and contribute to architecture decisions across databases, caching, messaging and distributed systems.
• Optimise services for performance, scalability, security and fault tolerance.
• Set the bar for code quality, testing, observability and documentation.
• Keep production healthy: incident resolution, root-cause analysis, and identifying opportunities for refactoring and technical debt reduction.
• Use AI-powered development tools to improve delivery speed, code quality and team productivity.

Conocimientos

Java

Spring Boot

Distributed systems

SQL (PostgreSQL)

REST APIs

JUnit

Git

CI/CD

Docker

Mentoring

Herramientas

Docker

Git

CI/CD

PostgreSQL

Descripción del empleo

Nalanda Global in Madrid, Spain, is seeking a Sr Java Backend Engineer to design and evolve scalable backend architecture using Java and Spring Boot. You will join a product engineering team that leverages AI-powered tooling and modern development practices to deliver robust services.

You will own complex backend domains, drive technical initiatives, mentor peers, and help raise the team’s performance, reliability, and operational excellence across the platform.