Eero Volotinen

AWS Certified | Cybersecurity expert | Network specialist | Linux guru | CISSP | RHCE | MEng (Cybersecurity)

Espoo, Uusimaa, Finland

About

Security Expert (CISSP since year '11) & RedHat Expert (RHCE since year '08) & AWS Certified Solutions Architect Professional ('21, '24) & Associate ('24, '20, '15) & Hashicorp certified associate (’23) Specialties: - Security auditing and system hardening - Linux (Centos/RHEL/Scientific Linux/UBuntu/Debian/Gentoo/SLES/SLED/Oracle Linux/Amazon Linux) - Servers (on Linux platform) - Virtualization (Xen/OpenVZ/OracleVM/VMWare/RHEV/KVM) - Firewalls (Zyxel/CheckPoint/WatchGuard/Linux/Cisco ASA/SonicWall/PFSense/Cisco Meraki/Palo Alto) - WAF (Web Application Firewalls, ModSecurity) - LAN/WAN/WLAN/SAN/VPN networking - IDP/IDS - all Redhat servers related - PCI DSS - Vulnerability scanning (Qualys, Nessus, OpenVAS, GreenBone, NMap, HackerGuardian. NeXpose, F-secure Radar, Detectify) - Amazon Web Services (AWS) including cloudformation and terraform - IP-Networks - GDPR - Cloudsecurity [email protected] https://www.youracclaim.com/users/eero-volotinen.92563917/badges

Experience

  • Senior IT Specialist at Nexi Digital Finland
    Jun 2025 - Present · 1 yr 2 mos

    - Expert level expertise on enterprise Linux systems (RHCE, RHCSA, CLP) - Expert level expertise on cybersecurity - Expert level expertise on various network devices - Expert level expertise on information security (CISSP) - Expert level expertise on vulnerability scanning and vulnerability management solution(s) - Expert level expertise on cloud security and AWS Web Services (AWS certified architect assosiate & professional) - Hands on experience on designing, configuring, auditing, managing and securing production enviroments with strict compliancy requirements (PCI level 1) https://www.redhat.com/rhtapps/verify/?certId=110-261-427 https://www.youracclaim.com/users/eero-volotinen.92563917/badges CISSP verification: https://www.isc2.org/MemberVerification LastName: Volotinen MemberNumber: 397570 AWS verification (professional) https://cp.certmetrics.com/amazon/en/public/verify/credential/0F272W0DCJVQ1VG0 AWS verification (assosiate) https://cp.certmetrics.com/amazon/en/public/verify/credential/6KXTNS32PFV11932

  • Senior IT Specialist at Nexi Group
    May 2019 - Jun 2025 · 6 yrs 2 mos

    - Expert level expertise on enterprise Linux systems (RHCE, RHCSA, CLP) - Expert level expertise on cybersecurity - Expert level expertise on various network devices - Expert level expertise on information security (CISSP) - Expert level expertise on vulnerability scanning and vulnerability management solution(s) - Expert level expertise on cloud security and AWS Web Services (AWS certified architect assosiate & professional) - Hands on experience on designing, configuring, auditing, managing and securing production enviroments with strict compliancy requirements (PCI level 1) https://www.redhat.com/rhtapps/verify/?certId=110-261-427 https://www.youracclaim.com/users/eero-volotinen.92563917/badges CISSP verification: https://www.isc2.org/MemberVerification LastName: Volotinen MemberNumber: 397570 AWS verification (professional) https://cp.certmetrics.com/amazon/en/public/verify/credential/0F272W0DCJVQ1VG0 AWS verification (assosiate) https://cp.certmetrics.com/amazon/en/public/verify/credential/6KXTNS32PFV11932

  • System Specialist at Finnish Net Solutions Oy
    Sep 2017 - May 2019 · 1 yr 9 mos

    Jack of all trades, master of many. Certified AWS architect, certified cybersecurity expert and certified Linux engineer. https://webportal.isc2.org/custom/CertificationVerificationResults.aspx?FN=&LN=volotinen&CN=397570 https://www.redhat.com/rhtapps/verify/?certId=110-261-427 https://www.youracclaim.com/badges/5ecc61a7-2aa0-4511-be41-51872b39cd1a/public_url (fiber at home project (in finnish)) http://www.lansivayla.fi/artikkeli/523528-insinoori-kyllastyi-kotiliittyman-maksuihin-ja-hommasi-kerrostaloon-huippunopean and https://www.mikrobitti.fi/2018/01/espoolaismies-kyllastyi-hitaaseen-nettiin-nain-hankit-taloyhtioosi-huippunopean-ja-halvan-internet-yhteyden/amp/) (https://www.linkedin.com/pulse/engineer-eero-gets-practically-free-gigabit-fibre-his-tossavainen/) https://www.kiinteistolehti.fi/zine/2137/article-43145 https://www.helins.fi/artikkelit/valokuituverkko/

  • Senior Consultant at Codemen Oy
    May 2016 - Sep 2017 · 1 yr 5 mos

    - Expert level expertise on enterprise Linux systems (RHCE, RHCSA, CLP) - Expert level expertise on cybersecurity - Expert level expertise on various network devices including Cisco and Cisco Meraki - Expert level expertise on information security (CISSP) - Expert level expertise on vulnerability scanning and vulnerability management solution(s) - Expert level expertise on cloud security (AWS-CSA) and AWS Web Services - Hands on experience on designing, configuring, auditing, managing and securing production enviroments with strict compliancy requirements (PCI level 1) https://webportal.isc2.org/custom/CertificationVerificationResults.aspx?FN=&LN=volotinen&CN=397570 https://www.redhat.com/rhtapps/verify/?certId=110-261-427 bug bounty @ https://hackerone.com/localtapiola/thanks/prior bug bounty @ https://www.hackr.fi/ohjelmat/hackrfi-oy.html https://www.youracclaim.com/badges/5ecc61a7-2aa0-4511-be41-51872b39cd1a/public_url

  • Solinor Oy (5 yrs)
    • Guru (and Partner), CISSP, RHCE, AWS-CSA
      Oct 2014 - May 2016 · 1 yr 8 mos

      - CISSP, RHCE, AWS-CSA - Enterprise Linux solutions (CentOS, RHEL, SuSE, AWS Linux, Oracle Enterprise Linux) - Information security using latest technologies - Network solutions using Cisco technologies - Very custom and hardened os, authentication and network configurations - Technical security consulting - Linux consulting - Virtualization - Storage - OpenVAS and related technologies - (Data)security in the Cloud https://webportal.isc2.org/custom/CertificationVerificationResults.aspx?FN=&LN=volotinen&CN=397570 https://www.redhat.com/rhtapps/verify/?certId=110-261-427

    • ICT and Security Manager (RHCE,CISSP)
      Aug 2011 - May 2016 · 4 yrs 10 mos

      PCI-DSS, Datasecurity, Redhat Enterprise Linux, EMV-payment systems, Datacenter operations, IDP, XTM, IDS, VPN, TCP/IP, Virtualization, Firewalls, Hardware purchases

    • IT-specialist (RHCE5,LPIC2,CLA11,CISSP)
      Jun 2011 - Aug 2011 · 3 mos

      PCI-DSS, Datasecurity, Redhat Enterprise Linux, EMV-payment systems, Datacenter operations, IDP, XTM, IDS, VPN, TCP/IP, Virtualization, Firewalls, Hardware purchases.