Network & System Administrators

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Vakta Mondal

Vakta Mondal

Data Researcher & Quality Llink Builder

Bangladesh - Tests: 8 - Portfolio: 8

Thanks for giving your valuable time through my personal profile. Here I am to help you with my sensible work ethics. Literally, I am looking for a position where I will introduce myself as an honest employee with my innovative thinking and fruitful work that will definitely add extra conversion for the expansion of the company flourish. I am full time freelancer who can take decision within minimal direction while no hesitation. I am extremely actuated, honest, arduous operating and focus person. However, I am experienced in the following field which will help to introduce myself as an ideal guy: *** Internet Research *** Data Entry *** Data Mining *** Internet Marketing *** Link Building *** PDF Submission *** Forum posting/Commenting *** Blog Comments/Writing *** Web 2.0 Creation *** Article Submission *** Profile Link Creation *** Local Directory Submission Besides, I know Search Engine Marketing (SEM) additionally. I believe that honesty is the key to success. After all, quality of work can retain myself to survive my existence through the competitive market.

$3.33 /hr
63 hours

Ronald Sulbaran

Ronald Sulbaran

Systems Engineer | Software Developer | c/c++ expert

Venezuela - Tests: 9 - Portfolio: 3

I'm passionate about High Performance Computing (HPC) Applications, Computer Architecture and Digital Systems: Modeling, Synthesis, and Simulation. I have more than 4 years as Teaching Assistant in Computer Architecture, Digital Systems and Microprocessors at Universidad de los Andes and more than 5 years developing c/c++ applications. 1 year developing High Perfomance Computing Applications in Fortran and C using MPI (OpenMPI and MPICH2). 1 year configuring High Performance Computing clusters in platforms as Amazon EC2, Google Cloud Computing: Compute Engine, and beowulf systems. 1 year writing bash scripts. 4 years developing Java applications. 4 years simulating Digital Systems with Systemc and VHDL. Skills with Verilog, matlab(Specifically with Data Visualization), FPGA, ISE WebPACK Design Software and Alliance CAD, CUDA. JUnit, Qt/QtCreator,Eclipse, Maven, MySQL, Python and Multithreading. I like teaching and I like learning new technologies.

$20.00 /hr
73 hours

Max S.

Max S.

Linux / FreeBSD / Mac OS X Systems Administrator

Ukraine - Tests: 8 - Portfolio: 10

My main profession's direction is an administration of servers and services (for virtual/dedicated web hosting, networks, different application servers, etc) under Linux and FreeBSD. I have more than 10 years of experience in *nix'like systems. I worked for hosting companies, ISPs, web studios and other small business IT companies in Ukraine and EU. My priority will always be to meet needs and deadline of my clients. I’m honest and fair. And if I saying "I will do this!", then you can be quite. I will do! My English language skills enough to conduct with any english language people in text conversations. I prefer text as communication method, cause I'm not well understand english language on ear. But, sure, we can try to speak with you also! Our acquaintance may be helpful to you if you need a specialist for: - Linux (Ubuntu, Debian, CentOS), FreeBSD or Mac OSX Server main system configurations; - Web-hosting servers software (Nginx, Apache, MySQL, PostgreSQL, etc); - Web-hosting control software (cPanel/WHM, DirectAdmin, ISPsystem products, etc); - Virtualization technologies (Xen, KVM, VirtualBox, OpenVZ); - Linux HA Cluster / DRBD / load balancing; - Domain name system (DNS); - File servers (Owncloud, FTP, Samba); - Mail (Postfix, Exim, Dovecot, Roundcube, Zimbra, Kerio Mail Server); - Firewall (ipfw, iptables); - VPN (openvpn, pptp); - Network access servers (mpd5, ppp, pppoe); - Routing devices (Cisco Systems, Mikrotik, BDCOM, D-Link); - Monitoring systems like Zabbix, Cacti, Munin, etc; - Cloud Hosting Services (Amazon, DigitalOcean, etc); - Web-sites migration; and other. Mac OS X and other Apple creations fan! My time zone is UTC+2, but if client needs, I can adjust my work time to any time zone. Thank you in advance for consideration. Take a look to my portfolio below. I look forward to working with you soon.

$33.33 /hr
158 hours

Valentin K.

Valentin K.

system administrator

Kazakhstan - Tests: 2 - Portfolio: 2

Hi, My name is Valentin Kim. In my portfolio you can find a few of the technologies that I've successfully working with. I believe my strong points are my punctuality and perfectionism. My #1 goal will always be to meet your needs the best way possible. When working on a new project, I like to speak with the client, so that I can have absolutely clear understanding of her/his needs and vision of the project. Since 2007, I'm working as system administrator in companies from 50 to 600 employees and have rich experience of investigating and solving different kind of problems. Please take a note that I just started my career as freelancer on Upwork. Thank you in advance for your time and consideration. I have a Bachelors in Software Engineering from Qostanay Social Technical University, in the Kazakhstan. Listed below are my experience and skills. - OS: Linux, Windows, FreeBSD; - Networking: TCP/IP stack, MikroTik RouterOS, *nix iptables; - Virtualization: XenServer, VMWare ESXi; - Storage: Nexenta, ZFS, iSCSI SAN - Scripts: *nix bash, DOS batch files, Windows Powershell; - Programming: Python, Perl; - CMS: Puppet, Ansible; - LAMP stack administration; - Directory services: Active Directory, OpenLDAP; - Email: Microsoft Exchange 2003-2013 administration, Kerio Connect mail server, Linux postfix; - VCS: Git, Subversion; — Bug/Issue trackers: Jira, Redmine; — SQL: MySQL, PostgreSQL, MS SQL administration;

$22.22 /hr
2 hours

Jagdish H.

Jagdish H. Agency Contractor

Mobile App, iOS, Swift, Android, Titanium, PhoneGap, Ionic, PHP, Ruby

India - Tests: 17 - Portfolio: 72

10+ Experience in development of Mobile and Web Application. • Excellent Hands on coding experience with designing skill and integration of codes. • Committed to assignments, capability to withstand pressures & ability to produce within deadlines. • Good communication and user interaction skills, capacity to work with a team sincerely and dedication towards work and organization. •Expertise in Adaptor handling includes Drag & Drop, Cache Lazy List, Endless Adapter , Pull To Refresh, Horizontal Pager implementation, •Advance knowledge of web Services implementation and Parsing for SOAP, XML or JSON format, JSON parsing and RSS feed handling •Advance knowledge of Fragment, Widgets and Weather API implementation. •Advance knowledge of Social SDK (Facebook, Twitter, LinkedIn, Fore-square, Google plus) •Advance knowledge of Integration of Bluetooth Printer (D-250), Socket 10 Scanner with SDK (hardware) Core expertise is focused around SIX key areas: 1. Native Mobile Application Development: -Apple iOS: iPhone, iPad, iPod compatible apps using Xcode and Objective C -ANDROID: Phone, Android Tablet compatible apps across all resolutions -BLACKBERRY: Phone, Playbook application development -QA: Testing and quality assessment -Digital Branding and Promotion for Mobile Applications -Mobile Device Management -Web back-end for content updates in Mobile applications -Mobile application integration with databases like MySQL, SQL, MS Access, Oracle, Sybase, SAP.. 2. Cross Platform Mobile Application Development -TITANIUM based cross platform applications for iOS, Android and Blackberry Phones and Tablets -PHONE GAP based applications for iOS, Android, Blackberry and Windows Phones and Tablets -HTML 5 based web applications -QA: Testing and quality -Digital Branding and Promotion for Mobile Applications -Web backend for content updates in Mobile applications -Mobile application integration with databases like MySQL, SQL, MS Access, Oracle, Sybase, SAP.. 3. Web Application Technologies - Ruby, Ruby on Rails Frontend Basic: HTML5/CSS3, Javascript, ajax, bootstrap JS framework: Jquery, Backbone.js Rails toolbox: HAML, Simple Form, Coffeescript, SAAS, Compass, Twitter-Bootstrap-rails Ruby Toolbox Skill Ruby Versions - 1.9.2, 1.9.3, rails Versions - 3.0, 3.1, 3.2 Rails Frameworks - MVC Rails testing tools: Cucumber, Rspec Rails social network builders: SAAS Rails eCommerce frameworks: Spree, Active Merchant Rails CMS framework: Refinery API Integrating: Facebook, Twitter, Google -DBA Skill MySQL, PostgreSQL, MongoDB, Couch DB -Cloud Computing Heroku, Amazon EC2, Engine Yard, Codeship -Rails IDE Skill Aptana, Sublime text -Project Management Tool Skill SVN, Git, GitHub, -Linux OS Skill Ubuntu 12.04 4. Web, CMS and Cloud based services and solutions: -End to end Drupal, Joomla, Wordpress- Design, Development, Upgrades, Theming, Migration, QA and Training -Web Security: Consultancy and Implementation -E-Commerce, Social Network, Aggregator Portal development -Payment gateway integration. -Load Balancing and CDN implementations for big websites -Quality Assessment and Testing: Manual/Automated -Server side set up, monitoring, reporting and consultancy 5. Social Media Integration -Fb, Twitter, Youtube etc channels' integration with Mobile and Web applications -Facebook application development -Social Media integration: Measurement and consultancy. -Online reputation management services Looking forward to provide you highest quality of coding and solutions at most competitive rates!

$25.00 /hr
4,075 hours

Vadim Arseniuk

Vadim Arseniuk Agency Contractor

Sr Windows and Linux Systems Admininstrator \ Cloud Engineer

Ukraine - Tests: 3 - Portfolio: 1

I’m a full time freelancer working in system administration with over 11 years of experience in Linux (Unix) and Windows. I perform each project to the fullest of my capabilities and with the dedication that is expected from a professional as myself. In short I've great experience with: - OS deployment, configuration and troubleshooting: CentOS, Ubuntu, Debian, FreeBSD, Windows Server 2003 - 2012R2 - Hosting engines: WHM (cPanel), ISPmanager, Plesk, DirectAdmin, Kloxo,Zpanel - AWS (RDS, EC2, SES, S3, CloudFront, VPC, Route53, RedShift, Elastic Beanstalk etc.) - Server and client apps: WEB (Apache, IIS, Nginx, Varnish, APC, PHP etc), SQL (MySQL, MSSQL administration), FTP (ProFTP, PureFTP, IIS etc.), Mail (Postfix, Zimbra, Dovecot, MS Exchange 2007-2013 etc.). - Deep knowladge in Virtualization: Xen, OpenVZ, KVM, VMware, Hyper-V, Docker. Other skills: Atlassian JIRA\Confluence deployment and troubleshooting. I'm good at server migration, installation and configuration,t troubleshooting and security. Also I'm able to provide on-going support services. Each problem that I solved became a rule which served afterwards to solve other problems. My job it's my rest.

$28.89 /hr
1,697 hours

A S M Kawsar Harun

A S M Kawsar Harun Agency Contractor

Linux Professional

Bangladesh - Tests: 5 - Portfolio: 3

Dynamic, skilled Technical Engineer with proven success in customer support and multiple e-projects for the programming contest, Internet Service Providers security and server administration along with Bare Metal Virtualization Technologies. Proven leadership capabilities in training IT professional courses as a Technical Instructor of Red Hat Linux and Cisco routers and switches. Has the ability of troubleshooting and resolving technical issues in a high volume of work into any busy office environment. Besides having such a nice extensive knowledge of achieving maximum value by updating customer services, he is able to work in various technologies.

$11.11 /hr
12 hours

Manish Kaushik

Manish Kaushik Agency Contractor

Star Web Programmer

India - Tests: 7

My one and only objective is to provide the optimum value to you, for each and every penny you spend. I understand that I cannot offer my services for free as I also have to make my living out of it, however I make sure that I deliver value, worth more than what I charge. Not just I follow absolute Quality standards in development, what further differentiates me from others is regularly coming up and sharing my recommendations with you, which I feel would further add value to the end product. I learnt at the very starting of my career, that a long term relationship is what I ought to focus on to win your heart and become an integral part of all future works.

$15.00 /hr
1,744 hours

Jonathan Robbins

Jonathan Robbins Agency Contractor

Microsoft Certified Enterprise Consultant

United States - Tests: 2 - Portfolio: 1

Self-directed and motivated Certified Enterprise Consultant. With 10+ years' experience in Microsoft technologies and products. Excellent at designing, developing & maintaining 5000+ installs of Exchange, Active Directory, Skype for Business (Lync), Hyper-V, System Center and Windows Server. Recently the past 3 years i been heavily working on Private and Hybrid Cloud projects mostly on infrastructure for asp dev teams. Azure, AWS and other private providers. I am hard worker with great communication skills, strong IT Infrastructure background in Microsoft Technology's.

$60.00 /hr
86 hours


AMIT MAKKAR Agency Contractor

Linux System Administrator

India - Tests: 3 - Portfolio: 2

I have 3+ years of exp. in IT(Web Hosting, Linux Server Management, Whm/cpanel). and I am Redhat certified security specialist. Technologies involved: Experience with Linux Servers Debi an, Ubuntu, Red Hat Enterprise Linux, Solaris. Solid knowledge Apache, Tomcat, JBoss, Web Sphere, DNS Knowledge of Red Hat, Centos, and other RPM based distributions. Experience with replication, clustering, tuning, sizing, monitoring including operating systems for running the LAMP stack. Experience in Shell Scripting (BASH). Knowledge of Backup/Recovery/Upgrade procedures. Experience in WHM/C panel Server Management. Experience with Mail Server Setup like :- Exim, Postfix Solid knowledge of Zpanel/DirectAdmin/Ispconfig/Webmin. Installation, configuration and management of Hyper-v Virtualization, VMware ESX and Virtualizor, Solus Vm, oVirt, KVM. Migration Expert

$10.00 /hr
9 hours