We are looking for a Senior Linux Engineer to join a
data centre migration programme supporting critical payment processing
platforms. This role sits within the core infrastructure stream and focuses on
ensuring stability, performance, and successful migration of high-availability
transaction systems. The platforms support payment card acceptance,
acquiring services, and issuer processing, operating in real-time environments
with strict requirements around availability, security, and performance.
Responsibilities
data centre migration programme supporting critical payment processing
platforms. This role sits within the core infrastructure stream and focuses on
ensuring stability, performance, and successful migration of high-availability
transaction systems. The platforms support payment card acceptance,
acquiring services, and issuer processing, operating in real-time environments
with strict requirements around availability, security, and performance.
Responsibilities
- Administer, configure, and maintain enterprise Linux server
environments - Support application platforms running on Linux infrastructure
- Build and prepare infrastructure environments for migration
activities - Monitor system performance, reliability, and availability
- Diagnose and resolve infrastructure issues impacting application
environments - Support environment setup, configuration, and access preparation
for migration phases - Collaborate closely with application, middleware, and
infrastructure teams during migration execution - Maintain operational
documentation and technical knowledge in Confluence
Requirements
- Advanced Linux system administration experience
- Strong experience with Red Hat Enterprise Linux or Oracle Linux
- Experience supporting application servers such as JBoss, Tomcat, Apache,
OHS, WildFly, or Spring Boot environments - Experience with automation tools such as Rundeck or Ansible
- Strong experience with Linux monitoring, performance analysis, and
troubleshooting - Scripting skills in Bash or Python
- Solid understanding of IP networking and infrastructure concepts
- Experience supporting high-availability or high-transaction systems
- Experience supporting infrastructure or data centre migration programmes
- Strong collaboration
skills in international engineering environments
Nice to have
- Understanding of cryptography concepts such as PKI
and PGP - Experience in payments, fintech, or financial
transaction systems - Exposure to large-scale enterprise transformation
programmes - Knowledge
of load balancing, TLS, and secure infrastructure patterns
Benefits
- Solid, competitive salary
- Work in a multinational environment on international projects
- Comprehensive healthcare
- Long-term B2B contract with a stable project pipeline
- Work model: Warsaw-based, primarily onsite with 1–2 remote days
per month