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Wallet icon Coin icon Rate 6 600 € - 7 800 € / month info
Timer icon Form of cooperation Full-time / 60% Remote
Briefcase icon Sector Telco
Location icon Location Bratislava

info The reward is calculated upon delivery of 20 MD per month (1MD=8h)

Project duration 12 - 36 months with the possibility of extension
Period of cooperation 01.03.2026 - 28.02.2027
Start date 01.03.2026 asap, or by agreement
Technology
  • UNIX/Linux
  • Kubernetes
Languages
  • English flag English - active, B2/C1/C2
  • Slovak or Czech flag Slovak or Czech - native

Project description

  • the project is focused on practical technical security – from Linux hardening, through containers and Kubernetes, to application and network security
  • responsibility for the design, implementation, and operation of security measures across the Linux infrastructure, container environment, and Kubernetes platform
  • the project has a strong hands-on character and requires the ability to integrate security into the entire lifecycle of infrastructure and applications (DevSecOps approach)
  • tasks and responsibilities:
    • design and implementation of Linux hardening standards (bare metal / VM / containers)
    • implementation of PAM / PIM solutions and privileged access management
    • integration of SAST / DAST / SBOM / dependency scanning into CI/CD pipeline
    • leading the vulnerability management process
    • performing penetration tests of infrastructure and applications
    • incident response, security audits and post-incident analyses
    • securing container images (build, signing, scanning)
    • design and enforcement of security best practices for Kubernetes
    • collaboration with Dev, Ops, and Platform teams
    • documentation of solutions and knowledge sharing
       
  • collaboration is possible in a hybrid REMOTE + ON-SITE mode, where ON-SITE [ Bratislava ] 2 days a week, or as agreed on the project / REMOTE
    • active and inactive on-call duty
  • final reward depends on the candidate's experience

Project requirements

  • min. 3+ years of experience with administration and hardening of Linux systems
  • advanced knowledge of Linux
  • knowledge of:
    • SELinux / AppArmor policies
    • kernel hardening, secure boot, patch & update strategies
    • auditD, integrity monitoring (AIDE, OSSEC)
  • experience with automation & coding
    • Bash and Python (automation, tooling)
    • Git (advanced workflow, CI/CD integration)
    • ability to do security code review
    • build processes, patching libraries, custom packages / containers
    • analysis of SBOM and dependency audit
  • knowledge of network security
    • deep understanding of L3–L7
    • network segmentation, zero-trust
    • TLS / mTLS, PKI, certificate management
    • firewalls (iptables / nftables, network FW)
    • VPN (IPsec, WireGuard)
  • knowledge of container security
    • hardening container images
    • runtime security, anomaly detection
    • registry security, vulnerability scanning
    • namespaces, cgroups, seccomp, capabilities
  • knowledge of Kubernetes
    • practical experience with production Kubernetes
    • security contexts, Pod Security Standards / Admission
    • network policies, secrets management
    • experience with RKE2 or AKS is an advantage
  • knowledge of application security
    • OWASP methodologies
    • SAST / DAST integration into CI/CD
    • API security (authN, authZ, rate limiting)
       
  • fluent English (communication and technical documentation)
     
  • experience with/in is an advantage:
    • experience with SIEM / SOC tools
    • OIDC / SAML
    • Service Mesh
    • GitOps approaches
    • certifications RHCE, CEH
    • use of AI tools for security automation
       
  • very good organizational and communication skills
  • analytical and conceptual thinking
  • ability to independently solve complex technical problems
  • strong security-first mindset
  • very good communication towards Dev/Ops teams
  • systematic approach to documentation
  • willingness to be part of an on-call rotation
  • ability to learn quickly
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