Freelancer profile translated to English.
Back to original languageAbout Alberto
Backend developer with over 8 years of experience specializing in Java and Spring Boot, currently working at Wannme, a Spanish fintech for marketplace payments and financing.
My niche is backend development in environments where security and reliability are critical: payment systems, gateway integrations, REST APIs, and modular architectures based on DDD. I have implemented complex security systems with Spring Security.
Available for ad-hoc remote projects with a dedication of 1 to 2 days per week. Ideal for projects of 2 to 8 weeks with a well-defined scope, without long-term commitment.
What I can offer you:
- Backend feature development in Java / Spring Boot
- Design and implementation of REST APIs
- Integration of payment systems and gateways
- Implementation of security with Spring Security (OAuth2, SAML, JWT)
- Architecture review and refactoring in legacy systems (Hexagonal, DDD, Microservices)
Spanish
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- WANNMETeam Leader & Technical LeadMay 2021 - Today (5 years and 1 month)In addition to my leadership roles, I remain an active part of the backend team, participating in daily development in Java and Spring Boot, which allows me to maintain an up-to-date and close technical view of the team's work.Java 11• · Spring Boot◦ · Hexagonal Architecture◦ · DDD◦ · Microservices◦ · API Design• · REST◦ · Feign◦ · Swagger◦ · JUnit◦ · Cucumber◦ · CI/CD◦ · Docker◦ · GitHub• · Jira• · Confluence◦ · Scrum
- IndraTeam LeaderMarch 2021 - May 2021 (2 months)Seville, Spain+ Tech Stack• - Java 11• - Microservices• - Swagger• - Spring Boot Framework• - Spring Cloud Netflix• - Spring Security• - JWT• - WireMock• - Feign• - Lombok• - JUnit• - Cucumber• - JPA with Hibernate implementation• - Oracle SQL Database• - Docker• - GitLab• - Redmine• - SCRUM Methodology
- IndraAnalyst / Java ProgrammerOctober 2020 - March 2021 (5 months)Seville, SpainSystem 'Cohessiona', which develops the electronic single social history for the Junta de Andalucía.• - Java 11• - Microservices• - Swagger• - Spring Boot Framework• - Spring Cloud Netflix• - Spring Security• - JWT• - WireMock• - Feign• - Lombok• - JUnit• - Cucumber• - JPA with Hibernate implementation• - Oracle SQL Database• - Docker• - GitLab• - Redmine• - SCRUM Methodology• - Development of user stories from client analysis.• - Task estimation based on user stories.• - Definition and creation of data models.
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Education
- Time Management Fundamentals Claude Code in Action Microservices with Spring Boot and Spring Cloud Netflix Eureka Introduction to OpenShift Applications (DO101) Advanced JPA: Professional use of JPA with HibernateFundamentos de la gestión del tiempo Claude Code in Action Microservicios con Spring Boot y Spring Cloud Netflix Eureka Introduction to OpenShift Applications (DO101) JPA Avanzado: Uso profesional de JPA con Hibernate
- ACIE.