Full Stack Developer (FSD) with expertise in digital distributed infrastructures
Confirmed on the employer's own hiring board on Nov 3, 2026. First seen by Alion on Apr 3, 2025.
EU citizens applicants with European passport only. This position is open only for freelancing (Range per hour between 47 Euro to 52 Euro).
Join youdidIT@European Commission, an innovative IT services and consulting company. As a Full Stack Developer, you'll tackle exciting challenges in a dynamic team, serving international clients and public organizations. Your expertise will boost our clients' efficiency and competitiveness in the digital world. We value communication, creativity, and teamwork, and emphasize continuous learning and social responsibility. If you’re ready to work in a quality- and security-focused environment, we look forward to your application. Join us in driving innovation and sustainable solutions.
Tasks
TASKS
Development of front-end website.
Development of back-end website.
Design and develop APIs.
Building reusable code for future use.
Development and integration of technological components.
Implementation of user requirements.
Prototyping.
Elaboration of test programs.
Integration with other applications.
Writing of technical documentation.
Assistance with deployment and configuration of the system.
Participation in meetings with the project teams.
Requirements
Strong knowledge of:
In depth knowledge of HTML 5 and CSS 3
In depth knowledge of Java 8 and Java 11. Java 17 and above are plus.
In depth and proven knowledge of Spring framework.
Good knowledge and experience working with Javascript frameworks (Angular, JQuery,
React…)
In depth knowledge of Relational DBMS
Good knowledge of Agile principles
Good knowledge of design principles such as SOLID, IDEALS and CQRS.
SAGA is a plus.
Good knowledge of interoperability technology (REST, Service Oriented Architecture,
web services, message-oriented middleware, service-oriented bus).
Knowledge of UML, in particular use case, state transition and activity diagrams.
Capability to write clear and structured technical documents
Ability to give business and technical presentations.
Ability to apply high quality standards
Analysis and problem
-solving skills
Ability to cope with fast changing technologies used in application architecture and
design
In depth knowledge of, and experience with Spring and Spring Boot version 3+,
Hibernate/JPA, MVC, Validation, Testing and Spring Security.
In depth knowledge and skills on using Continuing Development / Continuing Integration
techniques, knowledge of source code control repositories (GIT/Bitbucket) and build tools such as Maven and Gradle.
In depth knowledge of, and experience with, Spring Boot Test, jUnit and Mockito
In depth knowledge of Javascript framework Angular and NPM
In depth knowledge of, and experience with Oracle (versions 8+) and PL/SQL
Good knowledge and experience working with Java framework STRUTS
Good knowledge and experience working with JSP technology
Good knowledge and experience working with Javascript framework Knockout JS
Good knowledge and experience working with WebLogic
Good knowledge and experience working with Tomcat
Good knowledge and experience working with JSON format with libraries GSON or
JACKSON
Knowledge of, and experience with Weblogic
Knowledge of, and experience with Tomcat
Knowledge of REST principle
Knowledge of SOAP and Spring Web Services.
Knowledge of API Gateways such as WSO2 and Spring Cloud Gateway or Eureka/Zuul
Knowledge of Javascript framework JQuery
Knowledge of Javascript framework Kendo UI
Experience working with the Atlassian Suite, JIRA Confluence Bitbucket and bamboo
Knowledge of modern security frameworks/protocols such as JWT, JWE, JWKS, OIDC and
CAS is an asset
Knowledge of encryption and signing is an asset
Knowledge of DevSecOps is an asset
Knowledge of Kubernetes, Docker or AWS is an asset
Knowledge of, and experience with MySQL (versions 5+) is an asset.
Experience with Enterprise Service Bus technologies (Apache Camel, Apache ServiceMix,
Oracle Service Bus…) is an asset.
Knowledge of Web accessibility standards (WCAG 2.0, WCAG 2.1, WAI
-ARIA) is an asset
Good understanding of UX design best practises, in particular responsive and mobile
-first design, is an asset.
Experience in integration with European Commission authentication system
ECAS/EULogin is an asset.
Experience in integration with European Commission system Decide is an asset.
Experience in integration with European Commission system ARES is an asset.
Benefits
Attractive salary, long project continuity, supportive team environment
Join youdidIT as a Full Stack Developer, driving innovation in digital distributed infrastructures. Elevate your career with impactful projects at the European Commission and beyond. Apply today!