Abel Deltell

Background

About Abel Deltell

Senior backend developer with strong expertise in Java and Kotlin, specialized in building microservices-based architectures using Spring Boot. Since the beginning of my career, I have worked on scalable backend systems for enterprise-level applications, following clean code principles, layered architectures, and industry best practices. I’ve worked extensively with the Spring ecosystem, including modules like Spring Data, Spring JPA, Spring Security, caching layers, and messaging solutions. Over the years, I’ve implemented and maintained numerous integrations and utilities, using libraries such as Lombok, MapStruct, Apache POI, JasperReports, among many others. I regularly apply testing frameworks like JUnit and MockK for Kotlin-based services, always aiming for high test coverage and reliability. My experience also includes working with Docker-based environments, Git workflows, CI/CD pipelines (Jenkins, Bamboo), messaging systems like RabbitMQ and Kafka, as well as relational and NoSQL databases such as Oracle, MongoDB, and Couchbase. I have a solid understanding of layered and hexagonal architectures, API design, and backend systems that require robustness, maintainability, and performance. In addition to my technical contributions, I’ve mentored and supported junior developers, helping them grow and integrate into development teams effectively. Looking ahead, my professional goal is to continue improving as a technical expert and evolve into a software architect or team leader role, where I can combine deep technical knowledge with leadership and decision-making. I’m constantly evolving as a developer, committed to writing clean and testable code, and open to learning modern technologies as part of a collaborative and professional environment.