-
ATS4IT

Senior Java & Kotlin Developer (FR + ENG)

ATS4IT
Belgium · Full-time · Mid-Senior

Founded in 2020 in Belgium, ATS4IT is part of the Moongy Group, established to strengthen agap2IT’s presence in Europe.

Since 2021 we expanded further with the opening of our Danish branch in Copenhagen, and our Spanish brand in Madrid, reinforcing our commitment to being a key player in the European technology landscape.

Proximity, transparency, and collaboration define our approach at ATS. We aim to be your trusted partner and the first choice for your technological challenges

Position:Senior Java & Kotlin Developer (FR + ENG)

Location: Brussels, Belgium

Hybrid: 2 times a week on the client´s office

Candidates must possess European nationality or a valid work permit for Belgium

Mandatory Languages: English and French (C1 minimum) 

Role Overview

We are seeking an experienced Senior Java and Kotlin Developer for Web to join our innovative team. In this role, you will play a pivotal part in designing, developing, and maintaining cutting-edge web applications that will drive our business forward. Your expertise in Java and Kotlin will be crucial as you contribute to both backend and frontend development activities, ensuring seamless integration and optimal performance of our web services.

Must-Have Skills

  • Bachelor's degree in Computer Science, Software Engineering, or a related field; a Master's degree is a plus.
  • At least 3-5 years of professional experience in Java 17, Spring boot, Micranaut and Kotlin.
  • Strong understanding of web technologies, frameworks, and design patterns, including Spring and Angular.
  • Experience with event-driven and microservices architecture and  Azure cloud platform
  • Proficient with DevOps and CI/CD practices.
  • Excellent problem-solving skills and ability to work under pressure in a fast-paced environment.
  • Strong communication skills and proven ability to work collaboratively in a team-oriented setting.

Responsibilities

  • Design, develop, test, and maintain scalable web applications using Java and Kotlin.
  • Collaborate with product managers and UX/UI designers to create user-friendly interfaces and improve overall user experience.
  • Implement RESTful and GraphQL APIs that adhere to best practices and security standards.
  • Conduct code reviews and provide constructive feedback to junior developers to promote growth and maintain high coding standards.
  • Optimize application performance and troubleshoot issues in a timely manner, ensuring minimal downtime and disruption.
  • Stay up-to-date with emerging technologies and industry trends to proactively suggest improvements in the development process.
  • Participate in Agile ceremonies, including sprint planning, daily stand-ups, and retrospectives, to ensure team alignment and productivity.

What We Offer

  • DKV Insurance
  • Free training (technical, behavioral, language) and certifications
  • Continuous and personalized career progression support
  • Opportunities to work on projects with cutting-edge technologies
  • Opportunity to work in a global network of companies, with access to a wide range of challenging projects in different European markets.

At ATS4IT, part of the agap2IT family, we promote equality and value diversity. We foster a safe, inclusive environment where opportunities are equal for all. We welcome applications from individuals of all backgrounds, based solely on merit.

Join us and be part of the future!

Key Skills

Ranked by relevance

java kotlin design patterns microservices spring boot graphql devops cloud cicd ats
Login to Apply
Posted
Jun 18, 2025
Type
Full-time
Level
Mid-Senior
Location
Brussels
Company
ATS4IT

Industries

Software Development IT Services IT Consulting Pharmaceutical Manufacturing

Categories

Consulting Engineering Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
ATS4IT
Related

Senior Full Stack Java Developer (EN + FR/NL)

2025-07-09

Full-time
Mid-Senior
Belgium
Software Development
Consulting
View Job Details
ATS4IT
Related

JAVA Developer

2025-12-11

Full-time
Mid-Senior
Belgium
Software Development
Consulting
View Job Details
ATS4IT
Related

Python Developer (NL + ENG)

2025-05-22

Full-time
Mid-Senior
Belgium
Software Development
Consulting