Senior Software Engineer (Integration Systems)
Published on 02/04/2026
LHH Luxembourg
Our client is an IT consulting company specialized in the design and integration of digital solutions. It supports public and private organizations in their digital transformation projects. The company stands out for its strong expertise, collaborative culture, and high-quality teams.
LHH Recruitment Solutions offers extensive HR solutions through one unique brand. We are specialised in the employment of middle and top management and highly qualified professionals in contracting, temporary and permanent placement.
At LHH Recruitment Solutions, we believe in talent, not labels, and embrace diversity and promote more inclusive employment to our clients and partners.
As part of complex and business-critical integration projects, we are looking for a Senior Software Engineer with strong expertise in designing and implementing integration solutions, particularly within financial messaging environments.
Key Responsibilities
- Design, develop, and maintain integration solutions within distributed architectures
- Implement and manage data exchange flows between heterogeneous systems
- Work with financial messaging formats such as SWIFT (MT / MX)
- Develop and configure solutions based on IBM App Connect Enterprise (ACE) and IBM Transformation Extender (ITX)
- Design and expose APIs and integration services (REST / Web Services)
- Contribute to technical analysis, solution design, and specifications
- Ensure code quality through unit and integration testing, as well as code reviews
- Support deployment, maintenance, and evolution of solutions in cloud environments
- Collaborate with cross-functional teams in an Agile environment
Technical Environment
- Java / Spring Boot
- IBM ACE (App Connect Enterprise)
- IBM ITX (Transformation Extender)
- SWIFT (MT / MX)
- REST APIs / Web Services
- Middleware and integration tools
- Cloud environments
- Agile methodologies
Profile
- Minimum 5 years of experience in software development with a strong focus on integration
- Proven expertise with IBM integration solutions (ACE / ITX)
- Solid knowledge of financial messaging standards (SWIFT MT / MX)
- Strong understanding of service-oriented architectures and distributed systems
- Ability to work on complex technical environments with a high level of autonomy
- Professional English required (international environment)
- Strong communication skills and team-oriented mindset
To include yourself in this recruitment process; to find out more information about this role; or to discuss other career opportunities we have available, please contact Michaël Mercier as soon as possible
CONFIDENTIALITY ASSURED.
Ready For Next.
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