✅ Self-motivated Linux Server Administrator and Network Administrator with more than 10+ years of working experience with different Cloud providers. Ready to take up any challenge.
✅ Expert on,
💎 AWS, Google Cloud, Azure, DigitalOcean or onPrem server management.
💎 Setting up and manage different environment Web Server, Database Server, Mail Server, Load Balancer, Optimization and Security.
💎 Designing Web Server - Building web server based on Apache, Nginx, Nginx/php-fpm, Varnish as backend with high performance tuning and major security issues.
💎 Learning Management Systems – Moodle (Expert) including mobile app (Android & Apple IoS) customization
💎 Document Management Systems – Nextcloud (Expert) and onlyoffice
💎 Security - Malware removal, server hardening using firewall rules, restriction in server login, Web security, Security auditing, fail2ban, mod_security for web attack, mod_evasive DDOS attack prevention, Firewall setup CSF, UFW and iptables. Prevention from mail attack, SSL Certificate installation.
💎 Database Server - Building MySQL, Mariadb database server with high performance , troubleshoot database server problems, tweaking MySQL variables for performance.
💎 Scripting - Bash Scripting for monitoring servers, auto backup.
💎 Mail server- Building mail server for sending and receiving mails postfix, sendmail, setup mail client Roundcube, SquirrelMail, Rainloop, Horde. Dovecot for POP & IMAP, troubleshoot mail issues, configure mail for delivery in inbox.
💎 Monitoring services and servers – LibreNMS, Nagios monitoring tools, tweaking as per requirement, monitor servers using bash script, Tripwire.
💎 Amazon - AWS EC2 server setup, Security.
💎 Cloud Servers & Panel - Management of Ubuntu, Centos, Cpanel, CWP, WHM, Plesk, Webmin, Diretadmin, ISPConfig, JustHost, Godaddy, Linode, Rackspace, Amazon.
💎 Migration - Server migration, website migration, database server migration, mail server migration.
💎 VOIP Solutions - Asterix based PBX (Eg: VitalPBX)
💎 Video conferencing - Zoom (including on premise setup), Jitsi, BigBlueButton
💎 Virtualization Technology - VMware VSphere Esxi, KVM, Xen Server
💎 Networking (CCNP R&S and SP certified) - Hands on experience with CISCO, HP, Extreme, Juniper devices including wireless.
💎 Firewall configurations - Hands on experience with Palo Alto, Check point and Cisco ASA firepower.
✅ Please do not hesitate to contact me to discuss your project in detail and determine how my skills will positively contribute to your team.
Server Virtualization
System Administration
NGINX
Microsoft Azure
DNS
SSL
Linux System Administration
Moodle
Postfix SMTP Server
Cisco Certified Network Professional
Learning Management System
LAMP Administration
Squid
Web Hosting
Network Engineering
Duleep T.
Colombo, Sri Lanka
$15/hr
5.0
6 jobs
I am skilled professional in the field of IP Networks , Mobile Packet Core Networks, Netowrk software development and process automation with more than 15-year industry experience.
IP Network network related troubleshooting, configuration, designing ,Network Process Automation,Network Software Development, Linux System administration, Network security configurations such as VPN,Firewall ,Web developments are my key areas as freelancer.
I have more than 15 years of industry experience above areas. I am looking forwards to accept projects related to above areas with reasonable low rate since I am new to upwork.
Firewall
Linux System Administration
C
Cisco Router
Network Administration
Huawei AR
C#
Web Application
Python
PHP
IPv6
Network Design
Automation Anywhere
Network Engineering
Multiprotocol Label Switching
Lakshitha K.
Colombo, Sri Lanka
$25/hr
5.0
4 jobs
I’m a DevOps enthusiast with a strong focus on cloud-native systems and infrastructure automation. I have hands-on experience designing, deploying, and managing scalable cloud environments, automating application delivery, and improving system reliability, performance, and operational efficiency.
Key areas of expertise:
Cloud Platforms
AWS (EC2, RDS, S3, Route53, ELB/ALB, VPC, IAM)
Google Cloud Platform (GCP)
Microsoft Azure
DigitalOcean, Linode, Oracle Cloud
Containerization & Orchestration
Docker, Docker Compose
Kubernetes (Rancher, Amazon EKS, K3s, RKE2)
Helm (chart management and deployments)
Containerd
Istio (service mesh)
Infrastructure as Code & Automation
Terraform
Ansible (configuration management & deployments)
CI/CD & Build Tools
Jenkins
GitLab CI
GitHub Actions
Maven, Gradle
Version Control & Collaboration
Git, GitHub, GitLab
Monitoring & Observability
Prometheus, Grafana, Alertmanager, Thanos
Web Servers & Reverse Proxies
Nginx, Apache
Databases & Storage
MySQL, PostgreSQL, MariaDB, MongoDB, ClickHouse
Redis (caching)
MinIO (S3-compatible object storage)
Operating Systems & Virtualization
Linux (Ubuntu, Debian, Kubuntu), Windows
VirtualBox, VMware, KVM
Scripting & Programming
Bash, Python
Security & Networking
SSL/TLS, Certbot, Let's Encrypt
WireGuard, Tailscale (VPN)
DNS management
Other Tools & Productivity
JIRA (ticketing)
scp, rclone (file transfer)
Vaultwarden
Editors: Vim, Nano
n8n (workflow automation), CrewAI
WordPress (CMS deployments)
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