SQL Server, Oracle, mySQL, prostgreSQL, mariadb
Angelos Kalofas
Windows System Administrator . Full Stack Developer (HTML, CSS, JS) And (node.js With React)
Peiraias,Attiki
Summary
Reliable Senior Administrator bringing 21 years of experience in system and network administration. Meticulous attention to detail with deep technical knowledge. Having strong technical skills as well as excellent interpersonal skills, enabling to interact with a wide range of clients. Eager to be challenged in order to grow and further improve the IT skills and knowledge.
Software development professional with experience in developing and designing web applications using HTML, CSS, JavaScript, Vite, Node.js, and React. Adept at developing and deploying complex backend systems, web services and databases.
Overview
21
21
years of professional experience
5
5
years of post-secondary education
4
4
Languages
Work History
Senior System Administrator, Full Stack Developer
Group KH LCC
Plovdiv, Bulgaria
2018.01 - Current
- Group KH LLC is an IT and ERP Support company and provide Cloud and Hosting Solutions.
- Provided network support services for devices such as hubs, bridges, routers, modems, VPNs, VoIP.
- Provided Full Services in Microsoft Server, Active Directory, Domain policy, Hyper-V, routing and remote services.
- Provided Full Services in Microsoft Exchange.
- Provided Full Services in MS SQL Server, mySQL, prostgreSQL, mariaDB (including scripting, functions etc)
- Provided Full Services in Cloud base Linux Server (Debian, CentOS)
- Provided Full Services in AWS/Azure solutions
- Software Engineering in php, html, css, python, JS, node.js, React
- CyberSecurity
Senior System Administrator, Full Stack Developer
ITA COMPUTERS LP
Athens, Greece
2009.01 - 2018.12
- ITA Computers LP is an IT and ERP Support company and provide Cloud and Hosting Solutions.
- Provided network support services for devices such as hubs, bridges, routers, modems, VPNs, VoIP.
- Provided Full Services in Microsoft Server, Active Directory, Domain policy, Hyper-V, routing and remote services.
- Provided Full Services in Microsoft Exchange.
- Provided Full Services in MS SQL Server, mySQL, prostgreSQL, mariaDB (including scripting, functions etc)
- Provided Full Services in Cloud base Linux Server (Debian, CentOS)
- Provided Full Services in AWS/Azure solutions
- Software Engineering in php, html, css, python, JS, node.js, React
- CyberSecurity
System Administrator, Developer
Credin Hellas SA
Athens, Greece
2011.05 - 2017.09
- Maintained stable operation of multiple clients' computer networks.
- Provided configuration recommendations and assistance in customer deployment.
- Analyzed and recommended solutions and upgrades to services to streamline processes.
- Mitigated risk by analyzing complex computer systems to assess vulnerabilities.
- Administered software licensing and purchasing for effective installation of network.
- Upgraded network software and hardware for optimized performance.
- Diagnosed system hardware and software problems using advanced root-cause analysis.
- Designed and implemented networks in collaboration with project engineers.
IT Technician & Network Engineer
Michanografikes Lyseis SA
Athens, Greece
2005.02 - 2008.06
- Michanografikes Lyseis SA is an IT and ERP Support company.
- Monitored server room, wireless network and other server infrastructure, keeping systems running smoothly.
- Maintained office PCs, networks and mobile devices.
- Managed system-wide operating system and software deployments as well as related software upgrade problems.
- Corrected connectivity faults to restore user access to local networks, cloud-based storage and public web.
- Linked computers to network and peripheral equipment.
- Oversaw on-site IT engineer dispatch plans, creating pre-defined response scenarios for common malfunctions and service call types.
- Directed budgeting studies on current and proposed IT spending plans, determining maximally impactful business enhancements and minimizing wasteful spending.
- Developed multi-site IT execution strategies, aligning work orders at multi locations to effectively align available resources with historical service data.
- Provided network support services for devices such as hubs, bridges, routers and other hardware.
- Initiated and managed network test facilities to verify network hardness and resilience.
- Configured and troubleshot VoIP and multi-media distributed systems and platforms.
- Provided complete end-to-end engineering and installation of route-based IP network solutions.
- Created VPN infrastructure and allowed for secure remote connections.
IT Support Engineer
Plaisio Computers SA
Athens, Greece
2003.07 - 2004.12
- Provided Tier 1 IT support to non-technical internal users through desk side support services.
- Resolved diverse range of technical issues across multiple systems and applications for customers and end-users across various time zones.
- Monitored systems in operation and quickly troubleshot errors.
- Documented support interactions for future reference.
- Promoted efficiency among departments with prompt resolution of system issues.
- Researched product and issue resolution tactics to address customer concerns.
- Assisted with updating technical support best practices for use by team.
- Used ticketing systems to manage and process support actions and requests.
IT Technician
Altec Telecommunications SA
Athens, Greece
2002.11 - 2003.06
- Altec Telecommunications SA is an internet provider (ISP)
- Maintained office internal networks.
- Maintained Leased Lines through out all Greece (External Network)
- Maintained VPNs
- Maintained Client (Business or Commercial) connections
- Maintained National Bank of Greece network of ATM.
Education
Certifications - Introducing Security: Aligning Asset And Risk Mgn
ISC 2
Online 2023.01 - 2023.04
Certification - Introduction To Cloud Computing
IBM - Coursera
Online 2023.02 - 2023.03
Certification - Getting Started With Git And GitHub
IBM - Coursera
Online 2023.02 - 2023.03
Certificate - Web Development With HTML, CSS, JavaScript
IBM - Coursera
Online 2022.02 - 2023.03
Certification - Developing Front-End Apps With React
IBM - Coursera
Online 2023.01 - 2023.03
Cerfitication - AWS: Publish A Node.js Website From Scratch
Amazon AWS
Online 2023.01 - 2023.03
Cerfitication - AWS Access Control
Amazon AWS
Online 2023.01 - 2023.03
Certification - AWS Cloud Technical Essentials
Amazon AWS
Online 2022.11 - 2023.03
Cerfitication - Developing Back-End Apps With Node.js And Express
Coursera
Online 2022.11 - 2023.03
Cerfitication - Developing Front-End Apps With React
Coursera
Online 2022.11 - 2023.03
Certification - AWS Fundamentals: Building Serverless Application
Amazon AWS
Online 2022.10 - 2023.03
Certification - Cloud IAM And Networking For AWS Professionals
Google Cloud
Online 2022.10 - 2023.03
Cerfitication - Cloud Computing
Amazon AWS
Online 2022.09 - 2023.03
Cerfitication - Web Development With HTML,CSS, JAVASCRIPT
Coursera
Online 2022.09 - 2023.03
Seminars - Ethical Hacking And Cyber Security
ECC-Council
Online 2017.05 - 2017.09
Skills
IT Tech and ERP consulting
Cyber Security
Virtualization technologies
Policy and procedure adherence
Software Development
Technical analysis
Hardware and Software Support
Technical architecture
Cloud Architecture Design and Support
Operational analysis
System Architecture Design
Technical reviewing
Troubleshooting IT, Network, Software
Software
PHP,HTML,CSS
Python, C
Active Directory and Policy
Draytek, PfSense
Linux Server (Debian, CentOS)
Windows OS/Srv, MacOS/Srv
Nodejs, React, Vite
AWS Amazon
Azure
Interests
Books, eNovels
Movies, TV-Series
Gaming
Traveling
Cooking
Timeline
Certification - Introduction To Cloud Computing
IBM - Coursera
2023.02 - 2023.03
Certification - Getting Started With Git And GitHub
IBM - Coursera
2023.02 - 2023.03
Certifications - Introducing Security: Aligning Asset And Risk Mgn
ISC 2
2023.01 - 2023.04
Cerfitication - AWS: Publish A Node.js Website From Scratch
Amazon AWS
2023.01 - 2023.03
Cerfitication - AWS Access Control
Amazon AWS
2023.01 - 2023.03
Certification - Developing Front-End Apps With React
IBM - Coursera
2023.01 - 2023.03
Certification - AWS Cloud Technical Essentials
Amazon AWS
2022.11 - 2023.03
Cerfitication - Developing Back-End Apps With Node.js And Express
Coursera
2022.11 - 2023.03
Cerfitication - Developing Front-End Apps With React
Coursera
2022.11 - 2023.03
Certification - AWS Fundamentals: Building Serverless Application
Amazon AWS
2022.10 - 2023.03
Certification - Cloud IAM And Networking For AWS Professionals
Google Cloud
2022.10 - 2023.03
Cerfitication - Cloud Computing
Amazon AWS
2022.09 - 2023.03
Cerfitication - Web Development With HTML,CSS, JAVASCRIPT
Coursera
2022.09 - 2023.03
Certificate - Web Development With HTML, CSS, JavaScript
IBM - Coursera
2022.02 - 2023.03
Senior System Administrator, Full Stack Developer
Group KH LCC
2018.01 - Current
Seminars - Ethical Hacking And Cyber Security
ECC-Council
2017.05 - 2017.09
System Administrator, Developer
Credin Hellas SA
2011.05 - 2017.09
Senior System Administrator, Full Stack Developer
ITA COMPUTERS LP
2009.01 - 2018.12
IT Technician & Network Engineer
Michanografikes Lyseis SA
2005.02 - 2008.06
IT Support Engineer
Plaisio Computers SA
2003.07 - 2004.12
IT Technician
Altec Telecommunications SA
2002.11 - 2003.06