Linux Freelancers

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  1. Umar Draz

    Umar Draz

    Sr. Unix/Linux System/Network Architect

    Pakistan - Last active: 1 day ago - Tests: 2 - Portfolio: 5

    Senior systems architect, UNIX/Linux/Solaris, VMware, OpenStack and data-center administrator, software programmer, project leader with a proven track record of applying years of experience and good practices to the specification, architecture, design, implementation and maintenance of communications information technology systems. Well-versed in the latest computer languages, operating systems, network and system administration techniques, seeking a position where my hands-on self-motivating passion with the technology provides me with a unique understanding of how to balance conflicting requirements and bring complex enterprise level IT projects to a successful completion. Ability to work both independently and as part of a team, with demonstrated results in leading and contributing to projects, interfacing with stakeholders, while training and mentoring junior staff. Also great at troubleshooting complex problems. LANGUAGES: HTML, JavaScript, Perl, PHP, LAMP, Regular Expressions, Bourne/Korn/Bash/Csh/Tcsh Shells, Structured Query Language (SQL), Python. TOOLS: Application Servers (Apache, JBoss, Tomcat, Nginx,), DBMS (Access, DBase III/IV, MySQL, Oracle, MongoDB), UNIX Scripting (all UNIX Shells, AWK, Perl, SED), Security Hardening and Performance (IP Filter, Fail2ban), Storage, Moosefs, Virtualization (SANS, NAS, VMware vSphere Server/vCenter, OpenStack, Xen)

    $33.33 /hr
    4,107 hours
    5.00
  2. Nallamala V.

    Nallamala V.

    Docker / AWS/ GCE/ Azure/ Linux/ LAMP / DevOps/ PostgreSQL/ Ansible

    India - Last active: 1 day ago - Tests: 4 - Portfolio: 1

    Docker & AWS & Azure & Google Compute Engine & Cloud and System administration & Production Support & Migrations & Cost Optimization & Security hardening & Performance Tuning & High availability & 24/7 detailed Monitoring & Automation & Continuous Integration & Chef & Ansible & Jenkins & LAMP & Shell Scripting EXCLUSIVE SERVICES: Docker, Ansible, Cloudformation CLOUD ASSESSMENT AND STRATGEY: Rapidly evaluate, define opportunities & the roadmap to move your IT to the Cloud. Create the optimal platform for building Systems of Engagement. I will help you develop your cloud strategy to ensure seamless and effortless migration of applications, platforms and infrastructure. DESIGN & IMPLEMENTATION Create high available and scalable architecture keeping the infrastructure and maintenance at cost at minimum. DATA CENTERS TO CLOUD MIGRATIONS (LIFT n SHIFT): Pre-migration readiness assessment. Services to seamlessly migrate your infrastructure to the cloud without any business downtime along with processes for security, backup and DR CLOUD AUTOMATION AND OPTIMIZATIONS Run your infrastructure with high efficiency by optimising and automating cloud deployments. Cost and Performance optimization. DEVOPS SERVICES Make use of industry best practices to automate the infrastructure provisioning, scaling , backup, monitoring, patch updates, code deployments TECHNOLOGY EXPERTISE: Public Clouds: AWS, Azure, Google Compute Engine Stack Migrations and Deployments: LAMP/LEMP( Wordpress, Drupal, Magento, Joomla etc), Java, RoR, .Net, Python(Django), Node.js OS Administration: Linux, Windows, Mac Web/App Servers Administration: Apache, Nginx, HAProxy, Tomcat, JBoss, IIS, Puma, Rails, Database Administration: MySQL, Postgres, SQL, Mongo, Cassandra Cache Mangament: CDN, Redis, Memcached, Varnish Automation Tools: Chef, Ansible, Jenkins, Docker Monitoring Tools: Nagios, Zabbix, NewRelic, Data Dog, Opsview Security: OpenVPN, Nessus, OSSEC Experience: Migrated 300+ Applications to AWS, Azure and GCE. Managed 10000+ VM instances in cloud. Migrated and Managed high popular applications to cloud. Designed highly scalable , available and secured architectures for popular e-commerce and Enterprise applications. Migrated and managed HIPAA complaint applications.

    $49.00 /hr
    2,673 hours
    4.82
  3. Muhammad Yousuf

    Muhammad Yousuf

    VoIP/Linux Administrator

    Pakistan - Last active: 1 day ago - Tests: 2 - Portfolio: 1

    I always love to learn new technologies and try my best to accomplish new and challenging tasks. 1. Complete IP PBX from scratch (Asterisk and freepbx) 2. Elastix (call center, fax server) 3. PIAF (With all Nerd Vittels scripts and tricks) 4. Trixbox and Freepbx Distro 5. Call center applications (Goautodial, Vicidial, Elastix) 6. Broadcast and AutoDialer(Goautodial) 7. VoIP calling card, pinless calling, wholesale, DID reselling (A2billing) 8. CRM with VoIP integration (Vtiger, SugarCRM, SuiteCRM) 9. Security of Servers and VoIP (Firewalls, Monitoring, Aleting) 10. VoIP security (Application security, Brute force attacks prevention, Fail2ban) 11. Monitoring of Servers and services (Nagios, Opsview) 12. High Availability and Failover (Heartbeat, DRDB, Pacemaker, Corosync) 13. Auto Proviosioning of IP Phones (Multiple vendors) 14. Asterisk custom dialplan 15. Fax server (Hylafax, Avantfax) 16. CDR statistics, Centralize CDR server for multiple Asterisk servers. 17. Missed call notifications, Queues reporting for Asterisk 18. Asterisk Operator Panels (Isymphony, FOP2) 19. VPN (OpenVPN, IPsec, PPTP with firewall security) 20. IVR (Database Backends) 21. Asterisk Integration with Digital PBXs i.e. Avaya, Nortel(sip trunking and PRI trunking) 22. GSM gateways with Asterisk (Openvox, GoIP, Dinstar, Quescom) 23. Networks (Switching, Routing, Security, Monitoring, Alerting, Optimization) 24. Firewalls (Pfsense, UTM, IPTables) I have practically experience of all the above mentioned products and technologies and I completed many custom projects using these. I am not limited to only these technologies, I always welcome to know new technologies and environments. I am always ready for a test job to prove my skills :-).

    $22.22 /hr
    181 hours
    4.97
  4. Jisin J.

    Jisin J.

    Senior Linux System Administrator

    India - Last active: 5 days ago - Tests: 2 - Portfolio: 1

    Providing administration and technical support to web hosting clients via chat and ticketing. Handle different levels of technical issues with servers. Optimizing the server. Familiar with Vituozzo, WHM and cPanel. Configuring and managing users groups, permission levels etc. Backup and Recovery of servers. Installation and Administration of Apache, PHP, MySQL. Apache, PHP recompilations to add-on new modules. Excellent experience in various webhosting and Cloud platforms including AWS / Azure / Vcloud / Rackspace etc. I can also handle development tasks using php, codeignitor, Magento, Wordpress etc.

    $16.67 /hr
    132 hours
    5.00
  5. Deep S.

    Deep S.

    Linux System Admin/AWS Specialist/Linux and AWS Trainer

    India - Last active: 2 days ago - Tests: 9 - Portfolio: 6

    Red Hat Certified Architect & Red Hat Certified Datacenter Specialist & Red Hat Certified Engineer. Specialisation in AWS Platform and services such as EC2,S3,RDS,EBS,ELB,AutoScaling,VPC,Route53,CloudFront and other services. Experienced in Server Security and VPN Setup. Specialisation in Virtualization using VMWare, KVM and Red Hat Virtualization Hypervisor. Hosting virtual Machines on Bare metal servers. Managing virtual machines on VMWare vCenter and RHEV-M Expertise in Hosting LAMP on Cloud and Dedicated Physical Servers. Linux expertise in Red Hat / CentOS / Debian / Ubuntu / Amazon Linux Expertise in providing Remote Server Support - IBM / DELL / HP I've over eight years of experience working in Linux environment and worked on various projects over the year involving Cloud and Dedicated servers. Being sysadmin I have worked on IBM, HP and DELL Rack Mounted Servers. Knowledge of Enterprise Infrastructure technologies and architecture. Worked as consultant on various projects in the past to design and implement an environment which uses SAN, Linux and Clusters to run Applications. Apart from the technical work I am an active member of serverfault.com community and contribute towards community in helping others. Certifications Done: Red Hat Certificate of Expertise in Enterprise Cluster and Storage Management. Red Hat Certificate of Expertise in Deployment and Systems Management. Red Hat Certificate of Expertise in Directory Services and Authentication

    $25.00 /hr
    394 hours
    4.89
  6. Md Probal Rahman

    Md Probal Rahman

    Network, Firewall and Linux Systems Engineer

    Bangladesh - Last active: 1 day ago - Tests: 10 - Portfolio: 3

    Network Engineering position that capitalizes on expertise in CISCO Routers/Switches & ASA Firewalls, Linux/Unix (RedHat, Debian, SUSE, BSD, CENTOS, FC, Ubuntu etc), Windows 2000/2003/2012 R2 platform. Dedicated to pursue further challenges in the field of Networking Engineering wherein my skills and knowledge will be highly developed and utilized. Maintain focus on achieving end-results while demonstrating strategic problem solving skills and ability to follow through with multi-tasking job. Can work with any new challenges especially in the Networking and System platform with minimum instructions. I am also experienced with other vendor swithces such as 3Com, LinkSys, Prolink etc. Firewalls from other vendors such as NetScreen, Fortigate 1000FA2, SonicWall, Monowall...Confident in HTML troubleshooting, Mail Servers in Linux Platform, RDS in Windows 2008 & 2012 R2, MySQL, SQUID, DHCP/DNS Servers and Opensource applications in Linux platforms..

    $33.33 /hr
    53 hours
    4.96
  7. Al Mamun

    Al Mamun

    System Administrator, Windows(MCSE) & Linux Server

    Bangladesh - Last active: 5 days ago - Tests: 4 - Portfolio: 6

    I have been working as System administrator for more than 10 years in well known Software development & Hosting company. I have thorough knowledge and hands on Experience on for the following areas of both Windows & Linux:1. Web server(IIS, Apache, Nginx) , 2. DNS server3. FTP Server, 4. Mail Server(Sendmail, Postfix, Exim, Exchange)5. VPN Server setup and configuration.6. Database server (MS-SQL, MySql) 7. Version Controlling Server like Subversion, Visual Source Safe8. Various CMS like Joomla, Wordpress, Drupal, Ektron, DotnetNuke 9. Continuous Integration Process with CruiseControl/Hudson/Nant also provide support to many dedicated servers hosted in Rackspace, Godaddy, 1and1, Bluehost, Hostmonster, Blacknight etc.

    Groups: Microsoft Certified Professionals

    $15.00 /hr
    820 hours
    4.94
  8. Abu Sufian

    Abu Sufian

    Linux,VoIP and Windows Server/Network Administrator

    Bangladesh - Last active: 1 month ago - Tests: 9 - Portfolio: 10

    I have over 6 years of hands on experiences in maintaining various servers mostly Microsoft & Linux based systems. Areas of my expertise are: 1. Asterisk, Elastix, Trixbox, FreePBX, Vicidial, A2Billing 2. Amazon EC2,S3,VPS,VMWare,ESXi,Xen,Open VZ 3. Mysql & MSSQL server 4. Windows based Servers, LAMP, Mail, DNS, Proxy Server 5. OpenVPN and L2TP/IPSec VPN 6. Webmin,Cpanel, WHM,Zpanel 7. Cisco,Mikrotik, DD-WRT,OpenWRT

    Groups: Microsoft Certified Professionals

    $8.00 /hr
    1,680 hours
    4.99
  9. Nitesh J.

    Nitesh J.

    Linux System Admin : WHM/cPanel, LAMP, AWS

    India - Last active: 1 day ago - Tests: 8 - Portfolio: 4

    Over 3+ Years Experience in Server management and Security, WHM Hardening, Live Server Migrations, Critical Troubleshooting, Linux and Windows Server Installation and Configuration, Main area of experience has been in the capacity of a Linux/Unix Technical Support Engineer, assisting project delivery of various sizes. Expertise in the Linux Server Administration, Server hardening and server security, Google Cloud, C-Panel/WHM, Direct Admin,ISPConfig, Plesk Panel, Apache/Litespeed, Nginx, MySQL, basic PHP, Exim, DNS. Linux Shared/Dedicated/VPS (Virtuozzo, Hyper-v) server setup, administration and troubleshooting. Server and application security hardening using Firewall, malware/antivirus tools and other technologies. Backup Management operations and monitoring(Nagios), Backup taken using Rsync, and tar, applications. Installation, configuration, maintenance and troubleshooting of Apache Web servers,Nginx, Database servers, DNS server, Mail servers (Send Mail, Exims) related problems. Troubleshooting common web server/emails/scripting Linux server and network/Internet connections related problems. Configured and Maintaining Joomla, WordPress, Drupal, and Magento services as per client requirements.

    $17.78 /hr
    627 hours
    4.88
  10. Ajish Cheeran

    Ajish Cheeran

    Open VZ / Linux / cPanel Server admin.

    India - Last active: 3 days ago - Tests: 3

    I'm a System Administrator with 6+ years experience. I've great experience with WordPress, cPanel/WHM(Bind, Postfix, Apache, MySQL, FTP and etc) + Virtualization OpenVZ. Also I've a good experience with Nginx + PHP-FPM + Nginx Cache + Varnish Cache. • Administration of Linux servers. • Mail Server Administration Exim, Qmail, Postfix. • MySQL Data Base Administration. • Security updates and application software installation. • cPanel Administration • Blog Administration of clients • Bash Shell scripting and PHP scripting. • Backup and Restore of hosting accounts. • Load monitoring and inform client regarding the issue. • Nginx Installation and Configuration • Support for Various Script that is available under Fantastico I have extensive experience in end user support via various mediums such as Live Chat, Emails, Tickets. • Name server Management and Domain name registration with Godaddy. • MySQL server tunning and Optimization • Installation of Memcached, and APC • Apache Compilation with PHP. • Raid and LVM configuration. • Installation of Centos and Ubuntu from KVM, DRAC, IPMI. • CSF, APF and IP tables configuration for blocking attack to the server. Installation of Softclous. Mod security Rule. Educational Summary. B.com from Calicut University(2001). Professional Qualifications. RedHat Certified Technician. Microsoft Certified Professional (MCP ID = 2953008) Microsoft Certified System Administrator. Microsoft Certified System Engineer. Certificate in Web Application Design & Development. Basics of C# Programing. Honors Diploma in Web-Centric Computing. I may live in other side of the world, please expect some delays to answer your messages. Thank you.

    $4.44 /hr
    273 hours
    4.90