-
ThoughtBot

Senior Java Developer

ThoughtBot
Belgium · Contract · Mid-Senior

French or Dutch (one language at C2: highly complex mastery)

French or Dutch (the other language at B1: intermediate level)

English (B2: upper-intermediate level) MUST

10+ Years Of experience MUST


As a Senior Java Developer, you master advanced Java concepts and have strong skills in:

  • Spring Framework: Spring {Boot, Framework, Cloud, Security, Session, …}
  • Build & Dependency Management: Maven
  • Database & ORM: JPA, Hibernate
  • Data format & schema: XML, XSD, JSON, Protobuf
  • API & Communication: REST, gRPC, Swagger
  • Testing: JUnit, Mockito
  • Version Control & CI/CD: Git, Jenkins, Artifactory
  • Cloud & Deployment: Kubernetes and/or OpenShift
  • OS & shell: RedHat, bash


You also have experience with SQL, Bash, and Angular. You have already worked in an Agile/Scrum environment.

Tasks and responsibilities:

  • Technical analysis: Translate functional requirements into robust technical solutions.
  • Development of new features: Design and implement scalable and efficient software solutions.
  • Maintenance and support: Ensure corrective and evolutionary maintenance of existing applications.
  • Bug fixing and troubleshooting: Identify, analyze, and resolve technical problems in collaboration with relevant teams.
  • Test automation: Integrate automated tests into CI/CD pipelines to ensure delivery quality.
  • Documentation: Keep technical documentation, best practices, and architectural decisions up to date.
  • Deployment and version management: Install and deploy new software versions in target environments.
  • Code quality and best practices: Apply Clean Code and SOLID principles, and implement security best practices.
  • Code review (peer-review): Actively participate in code reviews to identify improvements, prevent anomalies, and encourage collective learning.
  • Mentorship and knowledge sharing: Support junior and medior developers and contribute to team growth.

Expected soft skills:

  • Analyze and solve problems
  • Take initiative
  • Adapt to changes
  • Communicate clearly
  • Work in a team
  • Integrate quickly into an existing team
  • Guide and support other team members
  • Ensure technological watch

Technical Skills

  • Experience in Java: development and bug fixing (L4: at least 10 years)
  • Knowledge and experience with Java 11+ (L3: at least 5 years)
  • Knowledge and experience with Java 21+ (L1: at least some experience)
  • Knowledge and experience with Spring Framework (L4: at least 10 years)
  • Knowledge and experience with Maven (L4: at least 10 years)
  • Knowledge and experience with JPA and Hibernate (L4: at least 10 years)
  • Knowledge and experience with XML, XSD, JSON, Protobuf (L3: at least 5 years)
  • Knowledge and experience with REST, gRPC, Swagger (L3: at least 5 years)
  • Knowledge and experience with Test Driven Development (TDD), unit testing (JUnit & Mockito) (L4: at least 10 years)
  • Knowledge and experience with Git, Jenkins, Artifactory (L3: at least 5 years)
  • Knowledge and experience with Kubernetes and/or OpenShift (L3: at least 5 years)
  • Knowledge and experience with SQL (L4: at least 10 years)
  • Knowledge and experience with Bash (L3: at least 5 years)
  • Knowledge and experience with Angular (L2: at least 2 years)
  • Experience with Agile/Scrum methodology (L3: at least 5 years)
  • Experience with DevOps and CI/CD principles (L3: at least 5 years)
  • French or Dutch (one language at C2: highly complex mastery)
  • French or Dutch (the other language at B1: intermediate level)
  • English (B2: upper-intermediate level)

Key Skills

Ranked by relevance

java kubernetes angular jenkins junit bash grpc cicd git sql xml cloud security spring boot artifactory devops maven cloud tdd
Login to Apply
Posted
Dec 16, 2025
Type
Contract
Level
Mid-Senior
Location
Brussels Region
Company
ThoughtBot

Industries

IT Services IT Consulting

Categories

Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
SI2001
Related

Java Developer

2026-05-30

Full-time
Associate
Italy
Software Development
Information Technology
View Job Details
Fulcrum Digital Inc
Related

Senior Application Support Engineer - Java

2026-05-28

Full-time
Not Applicable
Ireland
IT Services
Information Technology
View Job Details
VLC2 s.r.l.
Related

senior mobile developer

2026-05-29

Full-time
Mid-Senior
Italy
IT Services
Information Technology