I find and close security gaps before attackers can exploit them.
I'm Mattheos Tasios, a Cybersecurity Engineer specializing in cloud security, vulnerability management, and network & infrastructure hardening. My background includes three years as a full-stack developer, giving me a practical, code-level understanding of the systems I secure.

FOCUS
Cloud Security
TOOLKIT
Cloud · Networking · Automation
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Years of experience
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Security assessments & audits
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Projects completed
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Systems hardened
Finding and closing security gaps
A computer science background and a genuine interest in understanding how systems work, how they fail, and how to make them more secure. Focused on security engineering, cloud security, and resilient infrastructure.

Focus
Cloud & Security Engineering
whoami
Security engineering built on real development experience
I'm a Cybersecurity Engineer with a Computer Science degree, focused on cloud security, infrastructure security, vulnerability management, and security engineering. My work centers on identifying security gaps, strengthening systems and infrastructure and building a stronger security posture across modern environments.
Before specializing in security, I spent three years as a full-stack developer building Java-powered backends and React frontends. That background still matters: I approach security with an understanding of how production systems are designed and developed, allowing me to understand not just where security weaknesses exist, but why they are introduced and how to prevent them long-term.
Security-first, with development experience in the background
Cloud security, infrastructure security, vulnerability management, and application security form the core of my technical focus, supported by a full-stack development background.
Cloud Security
Securing cloud environments with a focus on identity and access management, secure configurations, infrastructure security, and reducing security risks across modern cloud-based systems.
Infrastructure Security
Strengthening systems and infrastructure by reducing attack surface, improving configurations, and applying security principles across networks, operating systems, and enterprise environments.
Vulnerability Management
Identifying, assessing, prioritizing, and addressing security vulnerabilities to reduce risk and strengthen the overall security posture of systems and applications.
Application Security
Applying secure authentication, authorization, API security, and code-level security practices to build applications that are resilient against common security weaknesses, informed by real full-stack development experience.
Background
Software Development
Three years of full-stack development experience with Java, React, and React Native, providing a strong foundation in software architecture, backend development, APIs, and secure software development practices.
Frequently asked questions
Answers to what recruiters and hiring teams most often ask. Have another question? Reach out directly in the contact section.
My core focus areas are cloud security, infrastructure security, vulnerability management and application security. I’m particularly interested in securing modern cloud environments, strengthening infrastructure, identifying and addressing security vulnerabilities, and applying secure development practices to applications. My full-stack development background also gives me a strong understanding of how software and systems are built, allowing me to approach security from both an engineering and development perspective.
Let's connect about cybersecurity engineering opportunities
I'm actively exploring full-time cybersecurity engineering roles. Feel free to reach out to connect, discuss an opportunity, or talk shop about security.