Description

Self-taught Software Developer with a passion for mastering new

technologies and delivering high-quality solutions. Transitioning into software

development at Mercadona, I leveraged my ability to rapidly learn and apply

concepts to become proficient in backend development. I have a strong focus

on Clean Architecture, SOLID principles, Event-Driven Architecture (EDA),

and Clean Code, ensuring that my work is both scalable and maintainable.

Committed to continuous improvement, testing and providing solutions that

are precisely tailored to meet customer needs.

Languages

Spanish
Native or bilingual
English
Fluent
German
Basic
Catalan
Native or bilingual

Workplace preferences

Can work on-site

Valencia (up to 50km)

emineo Spain
Fullstack Developer
PUBLIC SECTOR
November 2024 - Today (1 year and 8 months)
Spain
In my role as a Fullstack Developer at emineo Spain, I work with my team to
create and deploy custom features for our client's solution. My responsibilities
cover the entire development lifecycle, from conception to maintenance, with a
focus on delivering efficient and robust end-to-end functionality.
Spring boot Angular Apache Kafka JPA SQL
Mercadona
Team Lead
RETAIL (LARGE RETAILERS)
December 2022 - October 2024 (1 year and 10 months)
Spain
As a Team Lead at Mercadona, I guide a team of developers in building and deploying applications. I also serve as a Product Owner to align our solutions with business needs. I balance technical leadership with strategic oversight to drive project success.
Leverage Google Cloud Platform (GCP) and utilize CI/CD pipelines through CloudBees and Jenkins to enhance deployment efficiency.
Conduct code reviews and manage merge requests in GitLab to ensure high-quality code and effective collaboration.
Collaborate with stakeholders to gather and prioritize requirements, ensuring our solutions meet business objectives.
Google cloud Apache Kafka Spring boot Angular Business analysis
Valencia/València, Comunidad Valenciana / Comunitat Valenciana,
Software Developer
RETAIL (LARGE RETAILERS)
June 2018 - December 2022 (4 years and 6 months)
Spain
As a software developer at Mercadona, I focused on designing and delivering scalable, high-performance systems. My role involved building robust applications with a strong emphasis on architecture, maintainability and system efficiency.
Designed and built backend systems using Java 8, 11 & 17, Spring/Spring Boot and Spring Data JPA, employing Hexagonal Architecture to ensure high scalability, maintainability and ease of testing.
Developed RESTful APIs with an API First approach, using OpenAPI for API documentation, improving developer collaboration and reducing integration issues.
Implemented Kafka for distributed messaging, enabling efficient data streaming, ensuring application resilience and fault tolerance.
Ensured high-quality code through rigorous testing with Junit and Mockito, leading to a significant reduction in bugs and production issues.
Improved query performance through optimization in Oracle SQL and PostgreSQL, significantly enhancing API response times and overall system efficiency.
Spring boot SQL Angular Kotlin API REST

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Universitat d'Alacant
2016

Stefan Gracia

Fullstack Developer

About Stefan

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