General Information

Position
Senior DNS Security Engineer
Work arrangement
Full-time
City
Sofia
Country
Bulgaria
Department
Business Delivery Solutions
Team
Engineering, AI & Data
Area of interest
Engineering
Way of work
Hybrid

Description & Requirements

Who we are looking for
Senior DNS Security Engineer (DNSSEC & DoT)

Are you passionate about network security, DNS infrastructure, and emerging protocols? 
Join our team to lead a Proof of Concept (POC) initiative focused on implementing and validating DNSSEC and DNS-over-TLS (DoT) within an enterprise-grade environment.

What You Bring

Core Skills
Strong expertise in DNS protocols, including:
  • DNS fundamentals
  • DNSSEC (signing, validation, key management)
  • DNS-over-TLS (DoT)
  • TSIG authentication
  • Hands-on experience with Ansible for: DNS server deployment, configuration management and automation, solid understanding of network security principles.
  • Experience with Cisco Umbrella or similar DNS security solutions
  • Excellent technical documentation and reporting skills
  • Ability to translate complex findings into clear, structured outputs
  • Experience creating data visualizations for technical and non-technical audiences
Nice to Have
  • Familiarity with DNS inventory systems and object management workflows
  • Understanding of enterprise infrastructure environments (ideally SAP landscapes)
  • Exposure to SAP HEC architecture (admin vs customer landscape separation)
Your future role
🔍 Test Planning & Design
  • Define and document test cases and use scenarios for DNSSEC and DoT integration
  • Identify edge cases, dependencies, and failure scenarios within existing DNS infrastructure
📊 Metrics & Evaluation Framework
  • Establish KPIs and measurable benchmarks to evaluate DNS behavior
  • Design structured approaches for performance, reliability, and security validation
? POC Execution (VLab Environment)
  • Execute structured testing in a virtual lab environment
  • Validate DNSSEC signing, DoT encryption, and secure resolution flows
  • Identify risks, gaps, and integration challenges
📈 Data Analysis & Reporting
  • Analyze test results and translate findings into clear, actionable insights
  • Prepare executive-ready reports, visualizations, and comparisons
🎤 Stakeholder Collaboration
  • Present findings to Solution Architects and technical stakeholders
  • Support decision-making on production rollout and next steps
What we offer
  • An opportunity to form and lead a small, dynamic team with a startup approach within a large international company.
  • Flexibility to work from home or from our office in Sofia.
  • Opportunities for professional growth, including mentoring, conferences, training, and certification.
  • A supportive, collaborative, and motivational work environment.
  • Involvement in the development of innovative applications.
  • Full-time role with flexible working hours, ideal for those continuing their studies.
  • A wide range of benefits and the stability of working with a reputable company.
Selection process
We kindly ask you to upload your CV in English.
Shortlisted candidates will be contacted for the interviewing process. 
About Deloitte
Deloitte is a variety of people, experience, industries and services we deliver in 150 countries of the world. It is an intellectual challenge, a good starting point for your career, and an excellent opportunity for continuous development and gaining valuable life experiences. What you only must do is to take the first step – press the apply button and send us your CV, go through all the stages of the recruitment process and sign a contract with us. Deloitte is simply your best choice.

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