Java Developer

MISSION The Java Developer is responsible for

designing, developing, and maintaining robust, high-performance

backend applications built with Java and Spring Boot. The role

focuses on building and optimizing financial applications that

demand deep knowledge of JVM internals, concurrency, and system

performance. They will collaborate closely with frontend and DevOps

teams to deliver secure, scalable, and maintainable software

solutions that meet strict performance and reliability

requirements. MAIN ACTIVITIES AND RESPONSIBILITIES Design, develop,

and maintain backend applications using Java, Spring Boot, and

related frameworks. Build and optimize APIs and services supporting

financial applications with a focus on reliability, scalability,

and low latency. Collaborate with front-end developers to ensure

seamless integration with React-based interfaces. Participate in

code reviews, enforce coding standards, and contribute to

continuous improvement of development practices. Ensure proper

observability, logging, and monitoring of backend services.

Contribute to CI / CD pipelines and deployment automation in

collaboration with DevOps engineers. Engage in test-driven

development (TDD) practices to ensure code quality and

maintainability. Participate actively in Scrum ceremonies and Agile

delivery processes. REQUIRED EDUCATION AND EXPERIENCE Bachelor's

degree in computer science, Software Engineering, or equivalent

professional experience. At least 5 years of experience in backend

development with Java. Strong understanding of JVM internals,

including concurrency, multithreading, performance tuning, memory

management and garbage collection Manage database persistence using

JPA / Hibernate, ensuring efficient data modeling and query

optimization. Familiarity with build and dependency management

tools such as Maven or Gradle. Experience with CI / CD, Git, and

containerized deployments (Docker / Kubernetes). Proven ability to

troubleshoot performance issues and resolve memory leaks.

Experience working in Agile / Scrum environments and delivering

production-grade software. Experience with Microsoft Azure services

and migrating existing applications to the cloud is a plus.

Understanding event-driven architecture and messaging technologies

(JMS) is a plus. Exposure to microservices and distributed systems

is a plus. Knowledge of monitoring and observability tools (e.g.,

Prometheus, Grafana, Azure Monitor) is a plus. QUALIFICATIONS AND

SKILLS Excellent communication and collaboration skills; Sense of

• responsibility and initiative; Ability to work autonomously;

Resistance to stress and time-pressure; Excellent interpersonal

skills and customer orientation; Agile and flexible mindset,

Excellent organizational skills and attention to detail; Ability to

interact with colleagues of diverse cultures; respect for

diversity; Full professional proficiency in Office 365 is expected.

Full professional proficiency in spoken and written English is

required; knowledge of other languages is an asset. Spanish

national, EU national, or holder of a valid spanish work

permit.