10/28/2026 updated
Premium member
100 % availableSenior Full-Stack Engineer | React | Node.js | Java | Python | AWS | CI/CD
Alicante, Spain
Only remote
Master's Degree, Expert in Information TechnologyJava (Programming Language)JavaScriptPython (Programming Language)Node.jsTypeScriptReact.jsSpring Boot
Full-Stack Web Development
Extensive experience building and delivering business-critical web applications using React, Next.js, Angular, Node.js, Java Spring Boot, and Python FastAPI across frontend and backend layers.
Cloud & DevOps Engineering
Solid expertise in cloud platforms including AWS, Azure, and GCP, combined with CI/CD pipeline management using GitLab CI, Jenkins, Docker, Kubernetes, and Terraform.
Microservices & Distributed Systems
Deep knowledge of microservices architecture, event sourcing, CQRS, SAGA patterns, and messaging systems such as Apache Kafka, RabbitMQ, and Amazon SQS.
Security & Authentication
Proficiency in OAuth 2.0, OpenID Connect, OWASP Top 10, CORS, XSS, CSRF, and WCAG compliance for secure and accessible application development.
Data & Messaging
Experience with Oracle, MongoDB, Elasticsearch, MySQL, Redis, PostgreSQL, Apache Kafka, RabbitMQ, Amazon SQS, and Amazon SNS for data storage and messaging solutions.
Testing & Quality Assurance
Comprehensive testing skills covering unit, integration, and end-to-end testing using JUnit, Mockito, Testcontainers, WireMock, Cucumber, SonarQube, TDD, Jest, Vitest, Cypress, Playwright, and Storybook.
AI & LLM Tooling
Familiarity with AI-assisted development tools including Cursor, GitHub Copilot, ChatGPT, Claude, LangChain, Pinecone, and Llama for writing and reviewing code.
Frontend Frameworks & Styling
Hands-on experience with Next.js, Angular, Redux, NgRx, RxJS, Tailwind, HTML, and CSS for building modern, responsive user interfaces.
Backend Frameworks & APIs
Strong background in Java (versions 8, 11, 17, 21), Spring, Spring Boot, Maven, Gradle, Spring Data, Hibernate, OpenAPI, gRPC, FastAPI, Express, GraphQL (Apollo), and Serverless architectures.
Extensive experience building and delivering business-critical web applications using React, Next.js, Angular, Node.js, Java Spring Boot, and Python FastAPI across frontend and backend layers.
Cloud & DevOps Engineering
Solid expertise in cloud platforms including AWS, Azure, and GCP, combined with CI/CD pipeline management using GitLab CI, Jenkins, Docker, Kubernetes, and Terraform.
Microservices & Distributed Systems
Deep knowledge of microservices architecture, event sourcing, CQRS, SAGA patterns, and messaging systems such as Apache Kafka, RabbitMQ, and Amazon SQS.
Security & Authentication
Proficiency in OAuth 2.0, OpenID Connect, OWASP Top 10, CORS, XSS, CSRF, and WCAG compliance for secure and accessible application development.
Data & Messaging
Experience with Oracle, MongoDB, Elasticsearch, MySQL, Redis, PostgreSQL, Apache Kafka, RabbitMQ, Amazon SQS, and Amazon SNS for data storage and messaging solutions.
Testing & Quality Assurance
Comprehensive testing skills covering unit, integration, and end-to-end testing using JUnit, Mockito, Testcontainers, WireMock, Cucumber, SonarQube, TDD, Jest, Vitest, Cypress, Playwright, and Storybook.
AI & LLM Tooling
Familiarity with AI-assisted development tools including Cursor, GitHub Copilot, ChatGPT, Claude, LangChain, Pinecone, and Llama for writing and reviewing code.
Frontend Frameworks & Styling
Hands-on experience with Next.js, Angular, Redux, NgRx, RxJS, Tailwind, HTML, and CSS for building modern, responsive user interfaces.
Backend Frameworks & APIs
Strong background in Java (versions 8, 11, 17, 21), Spring, Spring Boot, Maven, Gradle, Spring Data, Hibernate, OpenAPI, gRPC, FastAPI, Express, GraphQL (Apollo), and Serverless architectures.
Experience
Professional experience10+ years
Freelancer since2020
Languages
EnglishFluentFrenchNative speakerSpanishFluent
Project history
Worked on a business-critical web application for Luxembourg's leading telecom operator. Built and optimised data processing pipelines behind the core business logic. Used Cypress and Vitest for component testing, Robot Framework for end-to-end tests, and Splunk dashboards in production. Releases went through GitLab CI/CD pipelines with Docker builds. Authentication used OAuth 2.0 and OpenID Connect, applying OWASP Top 10 security practices.
Developed a fleet management platform for Switzerland's largest automotive group. Worked across the Next.js frontend and Java 21 Spring Boot microservices, with gRPC, Kafka, and MongoDB on the backend. Converted a server-side rendered backoffice to a static SPA served from AWS CloudFront. Rebuilt the UI as a Tailwind component library in Storybook. Shipped invoice generation end to end and migrated authentication to AWS Cognito.
Built a national directory of medical professionals for a French government entity. Worked on Java 17 and Maven with Spring Boot REST controllers generated from OpenAPI definitions. Delivered Angular and NgRx features on the frontend. Managed Oracle and PostgreSQL databases. Messaging went through Kafka. CI/CD with Jenkins and Artifactory, quality gates with SonarQube, and Prometheus in production.