Freelance MuleSoft Integration Engineer – API & DevOps

USG Professionals Belgium; Zaventem; On-site; EUR 83,000 - 124,000; Full time

Job summary

USG Professionals Belgium is seeking a MuleSoft Integration Engineer (Freelance, on-site) to join the DHL Express Aviation domain. The role focuses on designing, building and maintaining MuleSoft-based integration services, APIs and framework components using Java and Mule Runtime.

You will work in an international, multicultural environment, applying TDD and CI/CD practices, and collaborating with technical and business stakeholders to translate requirements into scalable solutions.

Qualifications

• Bachelor's degree in Applied Informatics, Computer Science, Engineering or related field.
• 5+ years of experience working on integration projects.
• Strong hands-on experience with MuleSoft / Mule 4.
• Excellent knowledge of Mule connectors, Mule Runtime Engine.
• Integration with internal and external service endpoints.
• Strong experience with event-based integration.
• Good knowledge of API development.
• Good knowledge of integration protocols (SFTP, REST, SOAP, HTTP, JMS).
• Good knowledge of XML, RAML and WSDL.
• Good knowledge of Java.
• Experience with build, version-control and CI tooling (Maven, Nexus, Git, Bamboo, Bitbucket).
• Knowledge of monitoring solutions such as the ELK Stack.
• Strong working knowledge of Anypoint Platform, including API Manager and Runtime Manager.
• Understanding of integration architecture patterns and concepts.
• Experience with TDD and automated testing.
• Experience in an Agile development environment.

Responsibilities

• Design, develop and maintain MuleSoft Integration Services using Mule 4.
• Design, develop and maintain framework components and services using Java and Mule Runtime.
• Develop robust event-based integrations and APIs.
• Apply test-driven development (TDD) principles and implement automated testing.
• Work with internal and external service endpoints using different integration protocols.
• Contribute to continuous integration and delivery processes.
• Monitor and troubleshoot integration services.
• Translate business requirements into solid technical integration solutions.
• Collaborate with technical and business stakeholders in an international and multicultural environment.

Skills

MuleSoft

Mule 4

Java

APIs

Event-based

CI/CD

Maven

Anypoint Platform

REST

SOAP

XML

RAML

WSDL

ELK Stack

TDD

Education

Bachelor's degree

Tools

Maven

Nexus

Git

Bamboo

Bitbucket

Jenkins

Job description

USG Professionals Belgium is seeking a MuleSoft Integration Engineer (Freelance, on-site) to join the DHL Express Aviation domain. The role focuses on designing, building and maintaining MuleSoft-based integration services, APIs and framework components using Java and Mule Runtime.

You will work in an international, multicultural environment, applying TDD and CI/CD practices, and collaborating with technical and business stakeholders to translate requirements into scalable solutions.