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NTT DATA Logo NTT DATA · IT - Software Development

Junior Infrastructure Security Design Consultant

Romania, Sibiu · Job Posted February 18, 2026
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Job Description

The Junior Infrastructure Security Design Consultant role at NTT DATA involves supporting senior engineers in developing security designs and documentation. Candidates should have a bachelor's degree in a relevant field and 1-3 years of experience in cybersecurity or IT security roles. Key skills include TCP/IP, technical writing, and familiarity with security technologies. Preferred certifications include Network+ and CCNA. This position offers opportunities for remote, hybrid, or office work, along with professional development through sponsored certifications.

Job Responsibility

  • Assist senior engineers with architecture diagrams and documentation under supervision
  • Learn security design principles, patterns, and best practices
  • Support creation of network diagrams, data flow diagrams, and security zone models
  • Contribute to documenting design decisions and observe architecture reviews
  • Create and maintain accurate technical documentation and diagrams using Visio/Lucidchart
  • Document security configuration requirements and implementation procedures
  • Maintain design repositories, version control, and quality-check deliverables
  • Research security technologies (firewalls, IDS/IPS, SIEM, endpoint protection) and vendor products
  • Assist with technology evaluations, comparison matrices, and proof-of-concept planning
  • Maintain knowledge base of security tools and deployment architectures
  • Learn concepts like firewalls, VPNs, segmentation, DMZ, and TCP/IP networking
  • Observe firewall rule reviews, packet captures, and network security assessments
  • Assist with basic network security documentation and diagrams
  • Document baseline configurations for servers, workstations, and network devices
  • Learn CIS Benchmarks, hardening standards, and compliance requirements
  • Maintain configuration guides, SOPs, and secure build documentation

Requirements

  • Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or related field
  • Minimum 1–3 years of experience in cybersecurity or IT security roles
  • Understanding of TCP/IP, DNS, DHCP, routing, and switching fundamentals
  • Basic Windows and Linux administration and command line
  • Ability to learn and use Visio, Lucidchart, draw.io, or similar
  • Strong technical writing and documentation abilities
  • Basic VM creation and configuration skills
  • Excellent attention to detail in technical documentation and diagrams
  • Strong written and verbal communication abilities
  • Ability to learn complex technical concepts through study and practice
  • Self-motivated with curiosity about security technologies and design
  • Team collaboration and professional conduct
  • Time management and ability to meet deadlines
  • Analytical thinking and problem-solving aptitude
  • Excellent command of both spoken and written English

Nice to have

  • Network+ or CCNA (in progress or recently completed)
  • Security+ or working toward within 12 months
  • Relevant degree or completing technical degree program
  • Working toward: CCNA Security, SSCP, or security architecture certifications

What we offer

  • Smooth integration and a supportive mentor
  • Pick your working style: choose from Remote, Hybrid or Office work opportunities
  • Projects have different working hours to suit your needs
  • Sharpen your tech skills with our sponsored certifications, trainings and top e-learning platforms
  • Private Health Insurance
  • Attend individual coaching sessions or go one step further by joining our accredited Coaching School
  • Epic parties or themed events
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