Security Engineer (m/f/d) (Freelance/Service Agreement)

FlixBus; Kraków; On-site; PLN 170,000 - 230,000; Part time

Job summary

FlixBus is seeking an experienced Security Engineer (m/f/d) to support a project-based engagement. The role focuses on client-side security, incident response automation, and security tooling across FlixBus's technology environment.

You will collaborate with security, infrastructure, and software teams to enhance FlixBus's security posture, reduce manual operations, and deliver concrete improvements to detections and runbooks.

Qualifications

• Proven experience with client security applications and phishing mitigation.
• Hands-on incident response and service desk ticket handling.
• Proficient Python for automation and secure coding.
• Experience with SIEM tools and security monitoring.

Responsibilities

• Set up and configure client security tools with internal security team.
• Automate incident response and security workflows using Python.
• Support incident response for client-side security events.
• Review security measures and improve detections and runbooks.

Skills

Email security

Phishing mitigation

Endpoint protection

Incident response

Python automation

SIEM tools

Collaboration

English proficiency

Tools

Splunk

ElasticSearch

Datadog

Job description

We are looking for an experienced Security Engineer (m/f/d) to support Flix on a project basis through a service agreement collaboration. The consultant will provide expertise in client-side security, incident response automation, and security tooling across Flix's technology environment. The collaboration will involve working with security engineers, infrastructure and software engineers, and business stakeholders to improve Flix's overall security posture and reduce manual security operations.

Scope of Services

• Set up and configure client security tools related to email security, access management, and asset protection in collaboration with the internal security team
• Automate incident response processes and repetitive security workflows using Python — including phishing triage, secret rotation, and M365/Graph automation — to reduce manual effort and increase team capacity
• Support incident response activities related to client-side security events such as account compromise and phishing incidents, collaborating with stakeholders across the organisation
• Review and assess existing security measures and contribute concrete recommendations for improving detections, response runbooks, and overall security services at Flix

About You

• Proven experience with client security applications, including email security, phishing mitigation, and endpoint protection
• Hands-on experience with incident response and service desk ticket handling
• Solid programming skills in Python with a focus on clean, maintainable automation code
• Experience with monitoring or SIEM tools such as Splunk, ElasticSearch, or Datadog
• Strong collaboration and communication skills when working with both technical and business stakeholders
• Professional proficiency in English (written and spoken)
• Cooperation based on a service agreement with independent delivery of agreed services and invoicing

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