Network Security Engineer

7 days ago

Warszawa, Mazovia, Czech Republic T-Mobile Polska Full time

Technical Skills & Experience

  • 3–5 years of hands-on experience in network and security engineering roles.
  • Strong knowledge of network protocols, routing and switching, TCP/IP, UDP, BGP, OSPF, etc.
  • Experience with SSE, firewalls, VPNs, IDS/IPS, and next-generation security appliances (e.g. Cisco ASA/FTD, Palo Alto, Fortinet, Zscaler).
  • Ability to design, implement, and monitor secure network infrastructure (LAN/WAN/Wi-Fi).
  • Familiarity with SIEM platforms, log analysis, and security monitoring tools.
  • Knowledge of NAC (Network Access Control), DDoS protection, and load balancing technologies.
  • Understanding of Zero Trust Architecture and network segmentation.
  • Hands-on experience with network troubleshooting tools (Wireshark, NetFlow, tcpdump).

Security Mindset & Best Practices

  • Deep understanding of cyber threats, network-based attack vectors, and defense mechanisms.
  • Knowledge of relevant compliance standards (e.g. ISO 27001, NIST, DORA, GDPR).
  • Ability to perform risk assessments, vulnerability scans, and incident response related to network-level threats.
  • Familiarity with change management and patch management processes.

Nice to Have

  • Experience in cloud networking security (AWS, Azure, GCP).
  • Scripting knowledge (e.g. Python, Bash) to support automation tasks.
  • Experience working in regulated industries (e.g. finance, healthcare, telecom).
  • Exposure to OT/ICS security environments is a plus.

Joining T-Mobile will offer you the space to develop yourself professionally and personally You will join a team that is willing to share knowledge and is counting on you to do the same.

,[Design, implement, and maintain secure network infrastructure (LAN, WAN, Wi-Fi) in alignment with industry best practices., Configure and manage network and security devices including firewalls, VPNs, IDS/IPS, and SSE platforms (e.g., Cisco ASA/FTD, Palo Alto, Fortinet, Zscaler)., Monitor and analyze network traffic and security logs using SIEM platforms and tools such as Wireshark, NetFlow, and tcpdump., Ensure a high level of security through the application of Zero Trust Architecture, network segmentation, and Network Access Control (NAC)., Implement and support DDoS protection solutions and load balancing technologies., Identify, assess, and respond to network-level threats, including conducting vulnerability scans and risk assessments., Ensure compliance with relevant standards and regulations (e.g., ISO 27001, NIST, DORA, GDPR)., Participate in change management and patch management processes., Maintain a strong security mindset and stay updated on emerging cyber threats, attack vectors, and defensive mechanisms.] Requirements: Network protocols, TCP, UDP, BGP, IPS, Security, Cisco, Palo Alto, Fortinet, LAN, WAN, Wi-Fi, Load balancing, Segmentation, Wireshark, ISO, NIST, GDPR, Bash, Cloud, Networking, AWS, Azure, GCP, Python, Bash

  • Network Security Team Lead

    7 days ago

    Warszawa, Mazovia, Czech Republic beBee Careers Full time

    About the RoleWe are seeking a highly skilled and experienced Network Security Team Lead to oversee and manage our Connectivity area consisting of product teams specializing in Identity and Access Management (IAM) and Network in an agile product setup.Key ResponsibilitiesLead, mentor, and develop diverse teams of technical professionals across IAM and...

  • Cybersecurity Network Architect

    7 days ago

    Warszawa, Mazovia, Czech Republic beBee Careers Full time

    Job DescriptionWe are seeking a skilled Cybersecurity Network Architect to design, implement, and maintain secure network infrastructure. The successful candidate will have hands-on experience in network and security engineering roles.Key ResponsibilitiesDesign and implement secure network infrastructure (LAN/WAN/Wi-Fi) in alignment with industry best...

  • Product Security Engineer @

    6 days ago

    Warszawa, Mazovia, Czech Republic Mettler-Toledo Full time

    METTLER TOLEDO is a global leader in precision instruments and services. We are renowned for innovation and quality across laboratory, process analytics, industrial, product inspection, and retailing applications. Our sales and service network is one of the most extensive in the industry. Our products are sold in more than 140 countries, and we have a direct...

  • Product Security Engineer @

    6 days ago

    Warszawa, Mazovia, Czech Republic Mettler-Toledo Full time

    METTLER TOLEDO is a global leader in precision instruments and services. We are renowned for innovation and quality across laboratory, process analytics, industrial, product inspection, and retailing applications. Our sales and service network is one of the most extensive in the industry. Our products are sold in more than 140 countries, and we have a direct...

  • Application Security Expert

    7 days ago

    Warszawa, Mazovia, Czech Republic T-Mobile Polska Full time

    4+ years of full-time commercial application security experience4+ years of experience in software development, preferably in cloud environmentExperience in architecting and building application security on modern tech stacks across multiple platforms (web, mobile, desktop)Prior experience in performing threat modelling and secure design reviewsFamiliarity...

  • Secure Application Architect

    7 days ago

    Warszawa, Mazovia, Czech Republic beBee Careers Full time

    Job Description:We are seeking a seasoned Application Security Expert to safeguard our systems and data. As an integral member of our IT, Cloud, and development teams, you will ensure robust security measures are in place and that our applications and infrastructure are secure against current and emerging threats.The ideal candidate will have extensive...

  • Application Security Engineer @

    7 days ago

    Warszawa, Mazovia, Czech Republic AVENGA (Agencja Pracy, nr KRAZ: 8448) Full time

    At least 3+ years of experience on similar positionKnowledge of security best practises, identity and access management and vulnerability management, risk management, secure SDLC and incident response principlesUnderstanding of key concepts of security managementUnderstanding of secure architecture concepts and security good practisesUnderstanding of secure...

  • Network Administrator @

    2 days ago

    Warszawa, Mazovia, Czech Republic Ework Group Full time

    Description of knowledge and experience:skilled at daily network management (diagnosing and troubleshooting issues, responding to incidents and quickly restoring services, delivering technical consultation to other units, etc.), skilled at planning and controlling IT operations (defining, creating and ensuring following of standard operating procedures,...

  • DevOps Engineer @

    1 week ago

    Warszawa, Mazovia, Czech Republic ITDS Full time

    You're ideal for this role if you have:Strong experience with Hashicorp Vault, InfluxDB, Grafana, Redis, and Redhat Ansible Automation PlatformProficiency in Ansible for configuration and automation tasksExperience in deploying and maintaining applications in on-premises environmentsAbility to work with containerized applications using Docker ComposeSolid...

  • Product Security Engineer @

    7 days ago

    Warszawa, Mazovia, Czech Republic Mettler-Toledo Full time

    Good knowledge of software development (any programming language is a plus),Knowledge of software security processes (SCA, SAST, DAST, Penetration Testing),Familiar with vulnerability databases and scoring methodologies such as CVE, NVD, and CVSS,Knowledge of secure device identity, secure boot, system integrity, secure updates and secure communication...