Plamen Trifonov - Solution Architect, Luxoft

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Work Background

LuxoftSolution Architect

Sep. 2022Sofia, Sofia City, Bulgaria• Solution engineering: Utilize Azure Services to create customized solutions, enhancing operational efficiency and meeting specific organizational requirements. Drive IT implementation projects through all phases from initial planning to supplier selection, implementation and operational hand over. • Proof of Concept Development: Spearhead the development of PoCs, demonstrating the effectiveness of proposed solutions in real-world scenarios. • Environment Setup: Responsible for setting up and maintaining various development and testing environments, ensuring optimal conditions for solution development and testing. • Reporting and Analysis: Prepare detailed reports on findings from research and analysis, providing insights and recommendations for technology adoption and process improvement. • Technology Analysis: Conduct thorough analysis of emerging technologies, assessing their potential impact and applicability in enhancing our infrastructure solutions. • Process Automation (Python & PowerShell scripts, MS PowerAutomate)

BULSTRAD VIENNA INSURANCE GROUPChief Information Security Officer

Oct. 2021 - Sep. 2022Sofia, Sofia City, Bulgaria• Provide leadership to the enterprise's information security organization • Adopting MITRE D3FEND framework • Develop, implement and monitor a strategic, comprehensive enterprise information security and IT risk management program • Develop and enhance an information security management framework • Assist with the overall business technology planning, providing a current knowledge and future vision of technology and systems • Lead Security Risk Assessments, Threat Modeling and Code Reviews • Setup, maintain and use various security tools to identify and manage vulnerability and threat data as part of Vulnerability Assessments and Vulnerability Management for mission critical products • Research and integrate new security technologies, frameworks and methodologies in the organization. • Setup and configuration of security systems: Firewalls, IDS, IPS, WAF etc.

GTC BulgariaSystem Administrator

Apr. 2017 - Sep. 2021Sofia• IT Consultation in the process in acquisition of other companies. • Onboarding to Microsoft Azure and Office 365 Cloud based services. • Federation trusts. • Applying backup policies in coordination of HQ. • Purchase recommendations.

DGKVSenior System Administrator

May. 2015 - Oct. 2021Sofia, Tsar Osvoboditel Blvd. 10•Administering a virtualized environment; •Design and implementation of new network topology, migration from Hyper-V to VMWare ESXi 6.0. The new network topology was build on the concept of the Cisco Smart Business Architecture reference model. The principles of scalability, fast performance and security were top priority. •Administering of 24 Windows Server 2012/2012R2 hosts and 4 RHEL Servers. •Inculcation of iSCSI storage area network (qSAN). •Migration of AD DCs, Ms Exchange 2013 on-premise, Application Servers, IIS to the new infrastructure. Creation of hybrid environment with an on-premise Exchange and cloud-based Exchange Online, Lync, SharePoint. On-premise Active directory sync with Microsoft Azure; •Setup of a Centralized Log and Monitoring Server - GrayLog. •Setup of HTTP/HTTPS proxy with Squid, ClamAV and Amavis acting as a second IPS,IDS adding extra security to web traffic. •Creation of policies for network traffic in order to secure the internal network from the user activity and unauthorized access (web policies, port based restrictions, VLANs, ACL etc.); •Active directory administration, implementation of new Group policy; •Implementation and management of router cluster (2xMikrotik CCR1016) with VRRP protocol. Interface Bonding (L2 LACP to act as a trunk with a Dell Powerconnect 6224 stack). •Deployment of VMware infrastructure - High Availability cluster, Resource pools, DRS, vMotion, vCenter appliance... •Deployment of Microsoft Exchange 2013 on-premiss in virtualized infrastructure. •Upgrade Microsoft SQL Server 2005 to Microsoft SQL Server 2012; •Deployment and configuration of WSUS Server; •Implementation of Sophos UTM •Setup and configuration of WSUS Server; •Implementation of Ubiquiti based Wireless network, Hotspot, 802.11n/ac; •VPNs - OpenVPN with Radius authentication, IPSec site-site solutions, PPP Multi-link; •Development of documentation, policies, procedures for ISO27001 certification

BulIns Insurance companySystem Administrator

Dec. 2014 - May. 2015Sofia, James Baucher Blvd. 87BulIns is one of the leading Bulgarian insurance companies with more than 300 employees and long-term credit rating iBBB+ • Ensuring the smooth running of the computer network with over 250 workstations, 7 physical servers and 32 virtual servers on 2 VMware vSphere DRS clusters; • Administering all the servers (CentOS, Windows Server 2003R2/2008R2) of the company, deployment of new proxy server using Squid Proxy and CentOS linux server; • Implementation of anti-spam solution SpamAssassin, AMaViS, ClamAV, and optimization of Linux - based email server using Postfix; • Active Directory administration, implementation of new Group Policy; • Speed-optimization of the LAN through continuous monitoring; analysis and reconfiguration of some parts of the network equipment; • Administration of Check Point NGX R65 firewall and Squid proxy server; • Cisco VoIP administration; • DBA of linked PostgreSQL, Ms SQL Server 2005/2008; • Functions of support specialist.

MozillaJavascript Developer

Sep. 2014 - Dec. 2014Mountain View, California, United StatesCurrent project: Optimization of Persona's login screen. Mozilla Persona is a decentralized authentication system for the web based on the open BrowserID protocol. Persona relies heavily on the Javascript client-side program running in the user's browser, making it widely usable. Support of authentication to Web applications via Persona can be implemented by CMS such as Drupal,Serendipity, WordPress, Tiki or SPIP. There is also support for Persona in the Phonegap platform (used for compiling HTML5 apps into mobile apps). Mozilla provides its own Persona server at persona.org. It is also possible to set up your own Persona identity provider, providing federated identity.

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