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Location

Poland

Rate

$38  / per hour

Years of experience

18+

About

As a seasoned IT professional, I bring extensive expertise in systems engineering, security analysis, and network administration. I have honed my technical skills in environments running RedHat/CentOS and Ubuntu operating systems, leveraging cloud services like AWS, and utilizing infrastructure as code (IaC) tools such as Ansible, Terraform, and Kubernetes. My programming experience spans Python, Perl, PHP, shell-scripting, HTML/XML, and JavaScript. I am proficient in managing databases including MySQL, MariaDB, PostgreSQL, and Redis, and possess solid networking knowledge at the CCNA+CCDA level. My security proficiency encompasses various firewalls, load balancers, proxies, and VPNs from vendors like F5, Fortinet, CheckPoint, PaloAlto, and Bluecoat. In my current role as a Senior System Engineer at Swisscom AG, I focus on automating operational activities and infrastructure management to enhance engineering productivity. My previous positions include Senior System Engineer at CreditSuisse, where I administered and maintained proxy environments for internet-facing applications, and Technical Security Officer at RBS Services, where I analyzed and responded to security events. My career also includes roles at Trustwave Holdings, Solidex S.A., and Auchan Polska, where I managed and troubleshooted complex security infrastructures. My academic background includes a degree from Chernivci National Yuriy Fedkovych University and postgraduate studies at the Warsaw School of Economics, supplemented by numerous professional courses and certifications from AWS, CompTIA, CheckPoint, Cisco, and others. My language skills include fluency in Ukrainian, Polish, advanced English, and intermediate German.

Tech Stack

Splunk, Ansible, AWS, Bash, ELK, Git, HTML, JavaScript, Kubernetes, Linux, MongoDB, MySQL, OpenVPN, PHP, PostgreSQL, Python, Redis, Terraform, XML

Experience

  • Created and maintained Splunk dashboards, reports, and alerts for security event detection at RBS Services, facilitating effective log management and integration for enhanced monitoring and security compliance.
  • Developed and maintained tools to automate operational activities, significantly enhancing engineering productivity and infrastructure management through configuration management and provisioning tools like Ansible and Terraform.
  • Was responsible for analyzing and responding to security events from firewalls, IDS/IPS, DLP, AV, and other security data sources, ensuring the integrity and security of the systems.
  • Managed and maintained proxy/reverse proxy environments for internet-facing applications, including mobile banking, enhancing web application security and performance.
  • Performed network troubleshooting, isolating and diagnosing network issues, and providing third-level support for complex security infrastructure problems.
  • Was involved in implementing IT security concepts, maintaining and operating security infrastructures, and performing vulnerability assessments and remediation tracking.
  • Administered and maintained a variety of firewalls and security devices from CheckPoint, Juniper, Fortinet, and PaloAlto, ensuring robust network security and protection.

Employment history

Senior System Engineer, Managed Security Service (MSSi), Swisscom AG November 2018 - Present
  • Developing, maintaining, and administering tools to automate operational activities.
  • Automating infrastructure management using configuration management and provisioning tools.
  • Designing, implementing, supporting, and improving monitoring and process automation tools.
  • Providing continuity and stability to the production environment.
Senior System Engineer, IFA/WES, CreditSuisse December 2017 - October 2018
  • Administration and maintenance of proxy/reverse proxy environment for internet-facing applications.
  • Automating infrastructure management and improving tools and monitoring.
Technical Security Officer / Security Analyst (SOC), Security Operation Center, RBS Services – RBS Group April 2016 - November 2017
  • Analyzing and responding to security events from FWs, IDS/IPS, DLP, AV, sandbox, and other security data sources.
  • Log management and integrations, creating and maintaining Splunk dashboards, reports, and alerts.
  • Managing system compliance, vulnerabilities, and network security.
  • Performing vulnerability identification, assessment, and remediation tracking.
Security Engineer, Swisscom AG November 2011 - March 2016
  • Implementing the IT security concept and maintaining and operating the security infrastructure.
  • Performing network troubleshooting.
  • Providing third-level support for the IT responsible community (NOC/SOC).
Security Engineer / Security Analyst (MSS), Managed Security Services, Trustwave Holdings, Inc. November 2010 - October 2011
  • Performing network troubleshooting to isolate and diagnose common network problems.
  • Configuring, managing, and monitoring FW, NAC, IDS/IPS, SELM, and IVS platforms.
  • Analyzing and responding to security events from FWs, IDS/IPS, AV, and other security data sources.
  • Responding to customer needs and questions concerning their access to network resources.
IT Security Engineer, Solidex S.A. January 2007 - October 2010
  • Supporting, troubleshooting, and resolving complex problems related to hardware failure, systems design, and misconfiguration for multi-vendor security solutions.
  • Designing and implementing IT security concepts based on firewall, VPN, IDS/IPS, proxy.
  • Performing installation and system migration between different platforms.
  • Providing technical consultations, pre-sales and post-sales support, and workshop training for clients.
System Administrator, Network Department, Auchan Polska Sp. z o.o. June 2004 - October 2006
  • Administration and maintenance of firewalls, proxy, antivirus, and mail servers based on FOSS.
  • Maintaining a monitoring system based on Cacti, Nagios, and NetFlow.
System Administrator, IT Department, Maxcom AG September 2001 - August 2003
  • Maintaining and administering network infrastructure including switches, routers, firewalls, and monitoring systems.
  • Administering databases and web servers and developing web applications.
System Administrator, IT Department, Maxcom Polska Sp. z o.o. June 2000 - August 2001
  • Maintaining and administering network infrastructure including switches, routers, firewalls, and monitoring systems.
  • Administering databases and web servers and developing web applications.
Senior IT Specialist, Savings Bank of Ukraine January 1999 - April 2000
  • Maintaining and administering database and file servers.
  • Maintaining electronic payment and mail systems.
  • Developing software for internal usage.
IT Specialist, IT Department, Bank “Ukraina” September 1996 - December 1998
  • Maintaining and administering database and file servers.
  • Maintaining electronic payment and mail systems.
  • Developing software for internal usage.

Education history

Chernivci National Yuriy Fedkovych University 1993 - 1999 Master's degree in Mathematics
Warsaw School of Economics 2008 - 2009 Postgraduate Studies "Effective IT Management and IT Governance"
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