Sofia, BG
Enterprise Security Solutions Expert
Whether you’re just starting out or bringing years of experience, at Yettel we believe the right role isn’t just about responsibilities — it’s about growth, impact, and being part of something meaningful.
Take a look — this might be the opportunity you've been waiting for!
The impact you’ll make:
We are seeking a Security Expert with strong experience in securing Kubernetes platforms and microservices-based architectures. This advisory role focuses on defining, validating and embedding security requirements across enterprise projects. The expert will serve as a subject-matter authority on Kubernetes and cloud-native security, contributing to architecture assurance, policy development and technical design validation.
What you’ll do:
- Define security requirements and validate controls for Kubernetes and microservices environments across IT projects.
- Review Kubernetes cluster architectures and service mesh implementations for compliance with internal and regulatory standards.
- Guide the selection and adoption of security tools (e.g., Kube-bench, Kubescape, OPA/Gatekeeper, Checkov/Trivy, EDR/XDR such as CrowdStrike) for secure operations and/or securing CI/CD workflows.
- Provide input during threat modelling, design reviews, architecture boards and security signoffs for containerized and cloud-native solutions.
- Specify security measures for service-to-service communication (e.g., mTLS, Zero Trust policies) and secured APIs.
- Collaborate with DevOps, architecture and infrastructure teams to ensure secure design patterns and reusable policy templates are adopted.
- Evaluate vendors and third-party solutions for Kubernetes and microservices platforms, ensuring alignment with enterprise security requirements and best practices. Provide security oversight during solution implementation phases to validate secure deployment.
- Contribute to internal security policies and guidelines development, design patterns, and compliance documentation.
- Participate in security audits and external assessments
To thrive in this role, you’ll need:
Kubernetes Expertise: Deep understanding of Kubernetes security controls (RBAC, admission control, network policies, runtime hardening).
Microservices Security: Familiarity with service mesh, API security, secure ingress/egress design, and inter-service trust.
Standards Knowledge: Ability to evaluate designs against CIS Benchmarks, ENISA/NIS2 guidance, and Zero Trust principles.
Practical Advisory Skills: Translate security principles into actionable design decisions and documentation.
Influence without Authority: Strong communication and advisory skills to guide teams and stakeholders.
Technical Evaluation: Ability to assess tooling, architectures, and vendor solutions.
Nice to have:
- Awareness of cloud-native security risks and secure software development practices.
- Familiarity with GitOps workflows and embedding security validation early in the pipeline.
- Knowledge of compliance and audit preparation in regulated environments, especially critical infrastructure sectors.
What’s in it for you:
- Financial & Time-Off Perks
- 21 days of paid leave (birthday included!)
- +4 bonus days if you use all your time off
- 1-month sabbatical every 5 years
- Annual bonus based on performance
- Food & gift vouchers every month
- Travel allowance
Mobile & Tech Goodies
- Unlimited mobile & internet
- Exclusive discounts on devices and accessories
Health & Wellbeing
- Premium health insurance
- Wellbeing support: in-house psychologist, sports at the office, expert talks
- Discounted Multisport or Coolfit cards
Growth & Learning
- Top online learning platform access
- Supportive team and manager
- Your ideas shape what we build
Purpose & Culture
- Do work that matters — we create real impact
- We're serious about sustainability and social responsibility
A tip from us:
AI is great, but this part is all you! We encourage AI at work, but for your application, we’d love to hear your own thoughts, experiences, and motivation.
You don’t need to tick every box! If this role excites you, go for it! We value potential over perfection.
Join Yettel now by sending us your up-to-date CV.
Only shortlisted applicants will be contacted with information about next steps of our selection process.
Applicants are treated with strict confidentiality following the applicable personal data protection legislation.