Vacancy

ESB System Engineer

Luxembourg Digital & IT Luxembourg Hybrid

TMC Luxembourg is looking for an ESB System Engineer for one of its clients.

About The Member Company

We are a global high-tech consultancy company with a team of entrepreneurial engineers, scientists, and digital experts from around the world. Together we form a fast-growing and proud community. We offer consultancy services to high-profile clients globally in diverse service areas, such as:

Technology & Engineering
Energy & Renewables
Life sciences & Pharma
Digital & IT

About this vacancy

We are looking for a dynamic engineer to join the Integration & Middleware team, with a focus on managing and optimizing enterprise messaging and application integration platforms. The ideal candidate will ensure smooth operation of middleware services, contribute to automation initiatives, and support continuous improvement of system reliability and performance.

What You Will Do:

Maintain Integration Ecosystem Health:
Oversee the operational integrity of our enterprise service bus (ESB) landscape—monitor availability, performance, and errors to detect and resolve issues before they impact the business.
Support Core Middleware Services:
Deliver ongoing support and maintenance for IBM App Connect Enterprise (ACE), IBM MQ, ITX, and WSO2 Micro-integrator deployed in Linux environments.
Drive Middleware Upgrades & Maintenance:
Perform patching, upgrades, and system improvements to ensure compliance with security standards and technological advancements.
Ensure Resilience:
Participate in disaster recovery and high availability tests to validate business continuity and failover strategies.
Enable Operational Efficiency:
Automate recurring tasks and deployment workflows using tools like Ansible and Azure DevOps, reducing manual effort and operational risk.
Resolve Incidents & Identify Root Causes:
Troubleshoot integration and messaging failures, perform in-depth root cause analysis, and implement permanent fixes to restore and improve services.
Deliver Clear Technical Documentation:
Create and maintain configuration guides, integration blueprints, deployment checklists, and technical handbooks to support internal teams and developers.
Coordinate with Technology Vendors:
Act as the technical liaison with middleware solution providers to track escalations and ensure timely resolution of platform-related issues.

What we expect from you

Your Profile:

Proven experience managing IBM App Connect Enterprise (ACE) and IBM MQ in a production setting.
Strong command of scripting and debugging tools such as Bash, Python, SOAP UI, and Postman.
Familiarity with DevOps practices and tools including Git, Jira, Azure DevOps, and logging platforms like Splunk or ELK.
Competence in Java or similar languages for reviewing or enhancing integration code.
Working knowledge of IBM Transformation Extender (ITX) and its data mapping capabilities.
Experience processing SWIFT financial messages (MT and MX formats).
Skills in building message flows and data transformations using eSQL, XSLT, or native ACE features.
Understanding of message transport protocols such as MQ, REST, SOAP, and SFTP.
Awareness of identity and access protocols (OAuth, SAML, etc.).
Practical knowledge of SQL for data queries within integration contexts.

What you can expect from us

We are truly unique thanks to our Employeneurship model which is a true innovation for the High Technology consulting business. It is the business relationship of the 21th century for high skilled technical professionals. It is built around 5 main pillars :

You will have a permanent employment contract, offering you stability and security ;
You will get to know your market value and have a share in the profit your work generates thanks to the individual profit sharing ;
We will support you with a one-on-one coaching and trainings designed to help you develop your entrepreneurial skills ;
The competence cells structure, provides you with a strong meaningful and relevant network ;
The entrepreneurial lab : a playground for new ideas and a potential launching for start-ups.

The 5 basic principles of employeneurship

A long-term working relationship

Enjoy the security of a long-term contract and a stable source of income while getting the opportunity to work at diverse projects.

Individual profit sharing

Full transparency. That’s it. For each of your projects, you know your hourly rate, your costs, and your individual performance-based profit sharing, all in order to stimulate your inner entrepreneur.

Business cells

Our employeneurs are grouped in business cells based on their technical expertise. They are small, focused and function as high-grade knowledge networks. And as buzzing communities of close colleagues.

YOUniversity

Every employeneur drives their own career. Together, we make a plan for personal and professional growth. Receive personal coaching and an extensive training budget to keep developing yourself and deliver outperformance at our clients.