Mission Overview

We are seeking a talented Fullstack Developer to join our team on a consultancy mission at a client site, representing Keystone Solutions. In this role, you will analyze, develop, and maintain the mypension application, aligning with departmental standards and stakeholder needs, including organizations, citizens, and political entities. You will also contribute to the training and integration of junior team members.

Technical and Generic Competencies

As a software developer, you will take on a Fullstack role (backend, frontend, devops). For the backend of the application, you must possess the following knowledge:

Java 24+

Spring / Spring Boot

Reactive programming with Project Reactor

Enterprise Java background: JBoss / Jakarta EE

SQL

Transaction management

For the frontend of the application, you must possess the following knowledge:

TypeScript

Angular 22+: signals, signal forms

Designing reusable frontend libraries / shared components

Translating Figma designs into working UI

For our architecture and API design, you should have a solid understanding of:

Hexagonal architecture (ports and adapters)

Domain-Driven Design

CQRS

Anti-corruption layers when integrating with external systems

Backend-for-frontend pattern

API design, OpenAPI

Regarding security, it is essential to have knowledge of:

Privacy by design

OWASP top 10

OIDC/Oauth2

It is important to consider the accessibility of mypension. Therefore, you should have knowledge of:

Designing accessible interfaces, WCAG

Testing for accessibility

In your role as a tester, you must master the following activities:

Test-driven development

Unit testing

Integration testing

Component testing

End-to-end and visual regression testing with Playwright

To manage the integration and delivery of our application, you need to be proficient with the following tools and methods:

Git

Gradle

Maven

Containers

CI/CD pipelines on GitLab

Trunk-based development

Our team employs strongly Agile-oriented methods. This means you must be able to demonstrate in-depth knowledge and experience of:

The Agile methodology, including pair programming

You should possess excellent communication skills and be able to collaborate effectively both within and outside the team. We work with short feedback loops and frequent integration, producing highly visual work. All these aspects require proven skills and experience.

Why Join Keystone Solutions

As a consultant at Keystone Solutions, you will enjoy the dynamic nature of consultancy work, tackling diverse challenges across various client environments. You will experience turbo-charged learning opportunities and a commitment to your career growth within our framework. Being a

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.

Duration: 01/11/2026 - 31/10/2027 12 months

(full time)

Skills required

Agile methodologie (o.a. pair programming). Communicatie en samenwerkingsskills.
- Level: Confirmed - Most recent: Any time
Architectuur en API design kennis: Hexagonal architecture (ports and adapters), Domain-Driven Design - Level: Junior - Most recent: Any time

Backend kennis: Java 24+, Spring / Spring Boot, Reactive programming with Project Reactor, Enterpris - Level: Confirmed - Most recent: Any time

Frontend kennis: TypeScript, Angular 22+: signals, signal forms, designing reusable frontend librari - Level: Junior - Most recent: Any time

Integratie en delivery: Git, Gradle, Maven, Containers, CI/CD pipelines on GitLab, Trunk-based deve - Level: Junior - Most recent: Any time

Security en accessibility: privacy by design, OWASP top 10, OIDC/Oauth2, Designing accessible interf - Level: Junior - Most recent: Any time

Testing: test-driven development, Unit testing, Integration testing, Component testing , End-to-end - Level: Junior - Most recent: Any time

Front-end Back-end Java Angular Developer

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