Senior Linux Engineer
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Salary
≈ $60k – $101k per year (Estimated)
Location
In office (Warsaw)
Seniority
Senior
Employment
Full-Time
Confirmed on the employer's own hiring board on Oct 11, 2026. First seen by Alion on Oct 9, 2026.
Overview
Company
Impact
Profile match
Madiff is an IT consulting and staff augmentation company that provides remote agile teams, nearshore development teams and individual IT contractors to enterprise clients, with most of its hiring run from Warsaw. It works across retail, banking and insurance, telecom and media, automotive, energy, transportation and life sciences, recruits consultants in Poland and Portugal and sells its services into the UK, Ireland, France, Switzerland, Northern Europe and the US. Its openings cover .NET and full stack developers, data engineers and data scientists, AI architects, system and business analysts, QA testers, project managers and IT sales staff.
We are looking for a Senior Linux Engineer to support a large-scale Data Centre Migration programme involving critical payment processing platforms. The role focuses on administering and optimising enterprise Linux environments, supporting migration activities, ensuring infrastructure stability, and working closely with application, middleware, and infrastructure teams to deliver a reliable and secure production environment.
Responsibilities
- Administration, configuration, and maintenance of enterprise Linux server environments
- Supporting application platforms running on Linux infrastructure
- Building and preparing infrastructure environments for migration activities
- Monitoring system performance, reliability, and availability
- Diagnosing and resolving infrastructure issues affecting application environments
- Supporting environment build, configuration, and access preparation for migration phases
- Working closely with application, middleware, and infrastructure teams during migration execution
- Maintaining operational documentation and technical knowledge in Confluence
Requirements
- Advanced Linux system administration experience
- Strong experience with RedHat Enterprise Linux or Oracle Linux
- Experience supporting application servers such as JBoss, Tomcat, Apache, OHS, WildFly, or Spring Boot environments
- Experience with infrastructure automation tools such as Rundeck or Ansible
- Experience with Linux monitoring, performance analysis, and troubleshooting
- Experience with scripting using Bash or Python
- Knowledge of IP networking and infrastructure concepts
Nice to have
- Understanding of cryptography topics including PKI and PGP
- Experience supporting high availability or high transaction environments
- Understanding of infrastructure concepts including networking, load balancing, and TLS
- Experience supporting application or infrastructure migration programmes
- Strong collaboration skills with international engineering teams
Benefits
- Solid, competitive salary
- Work in a multinational environment on international projects
- Comprehensive healthcare
- Long-term B2B contract with a stable project pipeline
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