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
01.2018 - 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
01.2009 - 12.2018
- 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
05.2011 - 09.2017
- 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
02.2005 - 06.2008
- 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
07.2003 - 12.2004
- 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
11.2002 - 06.2003
- 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 01.2023 - 04.2023
Certification - Introduction To Cloud Computing
IBM - Coursera
Online 02.2023 - 03.2023
Certification - Getting Started With Git And GitHub
IBM - Coursera
Online 02.2023 - 03.2023
Certificate - Web Development With HTML, CSS, JavaScript
IBM - Coursera
Online 02.2022 - 03.2023
Certification - Developing Front-End Apps With React
IBM - Coursera
Online 01.2023 - 03.2023
Cerfitication - AWS: Publish A Node.js Website From Scratch
Amazon AWS
Online 01.2023 - 03.2023
Cerfitication - AWS Access Control
Amazon AWS
Online 01.2023 - 03.2023
Certification - AWS Cloud Technical Essentials
Amazon AWS
Online 11.2022 - 03.2023
Cerfitication - Developing Back-End Apps With Node.js And Express
Coursera
Online 11.2022 - 03.2023
Cerfitication - Developing Front-End Apps With React
Coursera
Online 11.2022 - 03.2023
Certification - AWS Fundamentals: Building Serverless Application
Amazon AWS
Online 10.2022 - 03.2023
Certification - Cloud IAM And Networking For AWS Professionals
Google Cloud
Online 10.2022 - 03.2023
Cerfitication - Cloud Computing
Amazon AWS
Online 09.2022 - 03.2023
Cerfitication - Web Development With HTML,CSS, JAVASCRIPT
Coursera
Online 09.2022 - 03.2023
Seminars - Ethical Hacking And Cyber Security
ECC-Council
Online 05.2017 - 2017.09
Skills
IT Tech and ERP consulting
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
02.2023 - 03.2023
Certification - Getting Started With Git And GitHub
IBM - Coursera
02.2023 - 03.2023
Certifications - Introducing Security: Aligning Asset And Risk Mgn
ISC 2
01.2023 - 04.2023
Cerfitication - AWS: Publish A Node.js Website From Scratch
Amazon AWS
01.2023 - 03.2023
Cerfitication - AWS Access Control
Amazon AWS
01.2023 - 03.2023
Certification - Developing Front-End Apps With React
IBM - Coursera
01.2023 - 03.2023
Certification - AWS Cloud Technical Essentials
Amazon AWS
11.2022 - 03.2023
Cerfitication - Developing Back-End Apps With Node.js And Express
Coursera
11.2022 - 03.2023
Cerfitication - Developing Front-End Apps With React
Coursera
11.2022 - 03.2023
Certification - AWS Fundamentals: Building Serverless Application
Amazon AWS
10.2022 - 03.2023
Certification - Cloud IAM And Networking For AWS Professionals
Google Cloud
10.2022 - 03.2023
Cerfitication - Cloud Computing
Amazon AWS
09.2022 - 03.2023
Cerfitication - Web Development With HTML,CSS, JAVASCRIPT
Coursera
09.2022 - 03.2023
Certificate - Web Development With HTML, CSS, JavaScript
IBM - Coursera
02.2022 - 03.2023
Senior System Administrator, Full Stack Developer
Group KH LCC
01.2018 - Current
Seminars - Ethical Hacking And Cyber Security
ECC-Council
05.2017 - 2017.09
System Administrator, Developer
Credin Hellas SA
05.2011 - 09.2017
Senior System Administrator, Full Stack Developer
ITA COMPUTERS LP
01.2009 - 12.2018
IT Technician & Network Engineer
Michanografikes Lyseis SA
02.2005 - 06.2008
IT Support Engineer
Plaisio Computers SA
07.2003 - 12.2004
IT Technician
Altec Telecommunications SA
11.2002 - 06.2003
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