As a Middleware Engineer, you will support the migration of critical payment processing applications from one data center to another. You will be responsible for middleware platforms that sit between the application and infrastructure layers, ensuring applications continue to operate reliably throughout planning, testing, migration, and post-migration activities.
The role combines middleware administration, automation, troubleshooting, documentation, and close collaboration with project managers, infrastructure teams, and application owners.
Support migration of middleware components to new data center environments.
Build, configure, test, and validate middleware services.
Coordinate migration activities with project managers and technical teams.
Resolve technical issues and remove blockers during migration.
Manage and support technologies including:
Oracle WebLogic
Oracle Service Bus
Oracle Forms & Reports
Oracle REST Data Services (ORDS)
Oracle Internet Directory
Oracle APEX
Oracle Data Integrator (ODI)
Perform BAU (Business As Usual) support alongside migration work.
Monitor application performance, availability, and reliability.
Troubleshoot middleware, integration, and deployment issues.
Ensure production stability.
Use scripting and automation tools such as:
Shell/Bash
PowerShell
Perl
Python
Rundeck
Ansible
Produce and maintain technical documentation in Confluence.
Document configurations, procedures, migration steps, and operational knowledge.
Oracle WebLogic 11g/12c
Oracle Service Bus
Oracle Forms
Oracle Reports
Oracle REST Data Services (ORDS)
Oracle Internet Directory
Oracle APEX
Oracle Data Integrator (ODI)
PL/SQL
Oracle databases
BMC Control-M
Rundeck
Ansible
Bash/Shell
PowerShell
Python
Perl
Networking
Load balancing
TLS/SSL
High availability
Performance monitoring
Resilience and disaster recovery concepts
The employer is looking for someone who can:
Communicate effectively in Polish and English.
Work with international teams and SMEs.
Coordinate technical activities across multiple stakeholders.
Take ownership of tasks and deliver on commitments.
Share knowledge and collaborate effectively.
Understand the challenges of migrating business-critical applications.
A strong candidate would have:
Experience with data center or cloud migration projects.
Middleware administration experience in Oracle technologies.
Knowledge of enterprise application architecture (three-tier architecture).
Experience supporting payment, banking, or other high-availability enterprise systems.
Strong troubleshooting and problem-solving skills.
Familiarity with automation and DevOps practices.
Infotree Global was founded in 2002 in a small office in Canton, MI, Infotree Global had a clear mission; To bring the world’s best talent together with the greatest companies producing results through continuous improvement and innovation. From those humble beginnings, Infotree Global has explosively grown from a two-person operation to a global solutions company, functioning in over 150 countries across 5 different continents.
Infotree Global proudly serves more than 250 of the Global 1000, numerous government agencies, and some of the world’s largest nonprofit organizations. Our sustained growth is attributed to our focus and commitment to our thousands of full-time professionals. In today’s market, where high-quality dedicated individuals are in demand; Infotree Global recognizes that an emphasis on understanding, achieving, and exceeding our employee’s goals, aspirations and overall experience is paramount. This “people over profits” mindset has yielded tremendous success for our employees and clients. Our employees have a vast array of assignments available across the world to help achieve and exceed their career goals and our clients have motivated, dedicated, and hardworking professionals on their team. We are here to help the best talent work with the greatest companies to produce innovative results in a variety of industries including but not limited to IT, Engineering, Clinical, Skilled Trades, Finance and Accounting.
Our mission’s success is supported by several industry awards and accolades. If you are looking for a committed and understanding partner, your search ends here.
