Cătălin Corozanu

Head of Infrastructure & Security at QuStream | Head of IT & Infrastructure at Shortdot | Information Security Officer at Netopia Payments

Focşani, Vrancea, Romania
653 followers 500+ connections

Join to view profile
Colegiul Tehnic Edmond Nicolau

About

Experienced Information Security Officer and System Administrator with a proven track record of over 15 years in IT and system management. Currently serving as an Information Security Officer at NETOPIA Payments, I ensure the reliability, security, and optimization of critical systems. My career spans diverse roles in system administration, web design, DevOps, and network management, showcasing a robust skill set in troubleshooting, system performance, and managing Linux/Windows environments.

I bring hands-on expertise with a wide range of tools and platforms, including cPanel/WHM, Plesk, Proxmox, Microsoft 365, Apache, LiteSpeed, and CloudLinux. I also have extensive experience in website creation and administration using WordPress and Elementor. My role involves maintaining server reliability, securing web applications, and proactively addressing potential vulnerabilities.

Fluent in Romanian, English, and Italian, I am adept at collaborating with multicultural teams and providing innovative solutions to complex technical challenges. I am a Cisco Certified Network Associate (CCNA) and hold a Web Designer certification, reflecting my dedication to continuous learning and professional growth.

When I'm not solving technical problems, I write for my blog, sharing insights on technology and personal growth. Passionate about delivering value through technology, I am always open to new challenges that push boundaries and drive innovation.

Feel free to connect and explore opportunities for collaboration!

Activity

Join now to see all activity

Experience

  • NETOPIA Payments

    NETOPIA Payments

    3 years 6 months

    • NETOPIA Payments Graphic

      Information Security Officer

      NETOPIA Payments

      - Present 1 year 6 months

      Romania

    • NETOPIA Payments Graphic

      Site Reliability Engineer / DevOps

      NETOPIA Payments

      - 2 years 1 month

      Bucureşti, România

  • ShortDot

    ShortDot

    6 years 2 months

    • ShortDot Graphic

      Head of IT & Infrastructure

      ShortDot

      - Present 8 months

      Orchestrating Google Cloud and Microsoft Azure infrastructures with Linux servers to power registry operations for gTLDs like .bond, .sbs, .cfd, .cyou, .icu, .qpon, and .buzz across 400+ global registrars and 3M+ domains. Manage Google Workspace and Microsoft 365 for seamless collaboration, alongside multi-datacenter setups ensuring 99.9% uptime and backend stability for high-traffic TLD launches. Oversee WordPress/CMS applications, DNSSEC-secured DNS, email systems, and IaC automation with…

      Orchestrating Google Cloud and Microsoft Azure infrastructures with Linux servers to power registry operations for gTLDs like .bond, .sbs, .cfd, .cyou, .icu, .qpon, and .buzz across 400+ global registrars and 3M+ domains. Manage Google Workspace and Microsoft 365 for seamless collaboration, alongside multi-datacenter setups ensuring 99.9% uptime and backend stability for high-traffic TLD launches. Oversee WordPress/CMS applications, DNSSEC-secured DNS, email systems, and IaC automation with Web3 integrations for crypto payments and premium domain sales, driving explosive growth like .qpon’s 2,200% relaunch surge.

    • ShortDot Graphic

      Web Designer & SysAdmin

      ShortDot

      - 5 years 10 months

      Main responsabilities are to create/administrate companies solutions based on Wordpress, Elementor, Linux Servers, Microsoft365 and WPEngine administration.

  • QuStream Graphic

    Head of Infrastructure and Security

    QuStream

    - Present 1 year 2 months

    Designed Secure and Scalable Blockchain Infrastructure: Led the architecture and deployment of highly available, decentralized, and resilient blockchain nodes and networks, ensuring security, performance, and regulatory compliance.

    Developed Advanced Cryptographic Security Measures: Implemented end-to-end encryption, key management strategies, and Zero Trust security models to safeguard digital assets, private keys, and transactions against cyber threats.

    Led Security Audits and…

    Designed Secure and Scalable Blockchain Infrastructure: Led the architecture and deployment of highly available, decentralized, and resilient blockchain nodes and networks, ensuring security, performance, and regulatory compliance.

    Developed Advanced Cryptographic Security Measures: Implemented end-to-end encryption, key management strategies, and Zero Trust security models to safeguard digital assets, private keys, and transactions against cyber threats.

    Led Security Audits and Smart Contract Risk Mitigation: Spearheaded security audits, penetration testing, and vulnerability assessments for blockchain protocols and smart contracts, reducing attack surfaces and ensuring compliance with Web3 security standards.

  • Blogger

    Catalin.ro

    - Present 18 years 7 months

    Romania

    I write tech and personal stuff to this blog. So i can say this is a long lasting hobby..

  • cyberFolks.ro Graphic

    System Administrator

    cyberFolks.ro

    - 2 years

    Romania

    Main responsabilities of this job are to help clients over tickets on with H88 România clients, maintenance of the company Linux servers, using software like cPanel/WHM, Plesk, SolusVM, Virtualizor, Proxmox, R1soft, Jetbackup, Synconix, Acronis Backup, Apache, Litepseed, CloudLinux and other internal solutions.

  • Key-Systems GmbH Graphic

    System Administrator

    Key-Systems GmbH

    - 9 months

    Main responsabilities of this job were to answer to client tickets of their brands, GlobeHosting and GlobeSSL, solve client tech problems and administration of Linux/Windows servers, using software like cPanel/WHM, Plesk, SolusVM, Virtualizor, CloudLinux, R1Soft, JetBackup, Apache, Litespeed, Nagios and other internal solutions.

  • System Administrator

    Top Level Hosting SRL

    - 3 years 3 months

    Pitești, România

    Main responsabilities of this job were to answer client tickets, calls, chats, comercial and technical. System Administration of Linux/Windows servers, and other software like cPanel/WHM, Apache, Proxmox, SolusVM, CloudLinux, R1Soft, Zabbix and other internal solutions.

  • Freelancer.com Graphic

    Freelance Web Developer

    Freelancer.com

    - 8 years 3 months

    Solve tasks from different clients as a freelancer.

  • Network Administrator

    SCM Arta Modei

    - 1 year

    Focșani, Vrancea

    Main responsabilities were to admin local internet network, harware and software updates/upgrades, selling internet access to local clients.

Education

  • Colegiul Tehnic Edmond Nicolau

    -

    -

Licenses & Certifications

  • Google Cloud: Cloud Shell Lab Graphic

    Google Cloud: Cloud Shell Lab

    Google Cloud Skills Boost

    Issued
  • Google Cloud: Hands on Lab Graphic

    Google Cloud: Hands on Lab

    Google Cloud Skills Boost

    Issued
  • cPanel & WHM Administrator Certification (CWA) Graphic

    cPanel & WHM Administrator Certification (CWA)

    cPanel

    Issued
    Credential ID d3f2-2e5b-eb8c-47a0
  • cPanel & WHM Sales Professional (CPSP) Graphic

    cPanel & WHM Sales Professional (CPSP)

    cPanel

    Issued
    Credential ID 3878-4e25-df3b-0d0f
  • cPanel & WHM System Administrator I Certification (CWSA-1) Graphic

    cPanel & WHM System Administrator I Certification (CWSA-1)

    cPanel

    Issued
    Credential ID 622d-04d4-314f-87cc
  • cPanel Professional Certification (CPP) Graphic

    cPanel Professional Certification (CPP)

    cPanel

    Issued
    Credential ID ba6e-ed14-9274-24c6
  • Imunify360 Certification Graphic

    Imunify360 Certification

    cPanel

    Issued
    Credential ID 14fa-9646-a8a1-6c98
  • LiteSpeed Certification Graphic

    LiteSpeed Certification

    cPanel

    Issued
    Credential ID 4b82-c22b-0d06-3420

  • Cisco Certified Network Associate Security (CCNA)

    Universitatea din Pitești

    Issued

  • Web Designer

    International Computer School

    Issued
    Credential ID 074731
Join now to see all certifications

Languages

  • English

    -

  • Romanian

    Native or bilingual proficiency

  • Italian

    -

More activity by Cătălin

View Cătălin’s full profile

  • See who you know in common
  • Get introduced
  • Contact Cătălin directly
Join to view full profile

Other similar profiles

  • Daniel Mihai Popescu

    Daniel Mihai Popescu

    RG Blogs

    4K followers
    Romania
    View Profile
  • Bogdan Bologa⚡

    Bogdan Bologa⚡

    MEJIX

    674 followers
    Constanţa, Romania
    View Profile
  • Ioana Brincovan

    Ioana Brincovan

    Efratech

    351 followers
    Arad
    View Profile
  • Monica Cristea

    Monica Cristea

    IB Development

    599 followers
    Galaţi, Romania
    View Profile
  • Diana Roca

    Diana Roca

    I design digital products and visual systems where clarity, aesthetics, and business intent align.<br><br><br><br>My work focuses on Figma-first product design, shaping interfaces, design systems, and user flows that are coherent, scalable, and intuitive to use. I help teams turn complex ideas into clear digital experiences that feel refined, trustworthy, and human.<br><br><br><br>With a background in Fashion Design &amp; Visual Arts (B.A.) and over a decade of hands-on experience across UX/UI, branding, and digital storytelling, I bring a strong visual sensibility into product environments. I’ve worked across fashion, beauty, lifestyle, and tech, contributing to apps, websites, and brand systems from early concept through launch.<br><br><br><br>Alongside my design work, I’m a Co-Founder at Web Hustler, where I contribute to strategic decision-making and business operations, supporting product direction and long-term prioritization.<br><br>What defines my approach is visual coherence, intuitive flow, and a strong sense of identity, designing not just how things look, but how they work together.<br><br><br><br>Current focus:<br><br><br><br>Senior product design · UI systems · UX strategy · brand-aligned digital experiences<br><br><br><br>AI Visual Content Creation | Generative AI &amp; Visual Data Annotation | AI Image Generation<br><br><br><br><br><br>📂 Portfolio: behance.net/dianaroca

    679 followers
    Bucharest Metropolitan Area
    View Profile
  • Letitia Bogdan

    Letitia Bogdan

    Remote work

    893 followers
    Craiova
    View Profile
  • Andreea Staicu

    Andreea Staicu

    TotalSoft

    2K followers
    Bucharest Metropolitan Area
    View Profile
  • Elena Liliana Motoc

    Elena Liliana Motoc

    Nic Expert Construct

    128 followers
    Târnăveni
    View Profile
  • Dan Constantin Roșca

    Dan Constantin Roșca

    Freelancer

    14 followers
    Mediaş
    View Profile
  • Mihaela Ramona Nicolae

    Mihaela Ramona Nicolae

    wisedigital.tech

    227 followers
    Bucharest, Romania
    View Profile

Explore collaborative articles

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

Explore More

Add new skills with these courses

See all courses