Network & System Administrators

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Maksim Kharin

Maksim Kharin

System and Network Administrator

Russia - Tests: 1

Setting up and maintenance network devices: Cisco, Juniper, Mikrotik. (Vlan, Trunk, Port-Channel, EIGRP, IPSEC, Port-Security, STP, VTP). Setting up and maintenance of servers with OS Windows 2003R2/2008R2/2012R2 (AD, TMG, DHCP, FileServer, DFS, DNS, PrintServer, Hyper-V); Linux and FreeBSD (Apache, MySQL, Zabbix, MRTG etc). Writing scripts and programs on PoweShell, Perl, PHP, C # to automate actions;

$5.50 /hr
5 hours

Gilberto Villani

Gilberto Villani

Senior Linux and FreeBSD System Administrator

Brazil - Tests: 2 - Portfolio: 7

I am IT Project Manager working since 2008 for big companies (IBM, Endesa, Michelin and Globo) and I am ITIL Certificate. I am LPI Certificate and I have working since 2001 like Managing Network (Linux, FreeBSD, Unix, CISCO, Enterasys, Huawei and Checkpoint). Developer in HTML5, PHP, CSS3, C/C++, Objective-C, Java, bash script and SQL.

$10.00 /hr
1 hours

Csaba Elek

Csaba Elek

system administrator

Serbia - Tests: 7

Welcome to my Profile !!!! Looking for quality work, reasonable pricing and quick delivery !......Your are watching right profile. I am a Professional and hard worker with outstanding experience in WordPress posting, WordPress development, Shopify product adding , Data entry, Email List Building, Web research, Virtual Assistant etc. My goal is to perform quality work to everyone who needs my assistance, and I assure to provide long term relationship with my clients. Beside these I offer entrusted, precise work. I have more than 6 years experience in the field of web and software development. For these years I designed many websites and worked out a number of software. Among all I have excellent experience in Wordpress back-end development and plugins development. I have developed a number of complicated wordpress plugins and won the trust of my clients. Also, I have worked on a number of built-in wordpress plugins and can manage it well. I believe my abilities would be perfect for your venture. I can finish this job within the necessary time frame. I have years of experience in WordpressI am very flexible for working different timezone. There are 5 things made me specific and determine my work 1. I am a team player, very energetic. 2. I’m an Expert, Honest, Sincere and Responsible worker as I’m taking my work like my Responsibility. 3. Great communication with my Clients. 4. I love to juggle multiple tasks; will go the extra mile to get the job done. 5. 100% GUARANTEED Satisfaction. As a data entry specialist, I also am detail-oriented. Rest assured all the data will be accurately entered, no more, no less. Many years of my work experience have helped me develop mastery in Word and Excel.

$7.78 /hr
3 hours

Milic Dubak

Milic Dubak

Expert PLSQL developer and Oracle database administrator

Montenegro

I have several years of experience in software development and database administration. Working experience in banking and telecommunication companies. Many projects accomplished like: database migrations and upgrades, Oracle RAC installations, Oracle database replication, Oracle BI and DWH configuration and several application software development projects.

$40.00 /hr
1 hours

Alfonso Valdes

Alfonso Valdes

Linux / Amazon AWS / WHM WordPress / Nginx / Security / Docker DevOps

Mexico - Tests: 4 - Portfolio: 6

A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High Performance, Hardening Servers, Migrations, Ethical hacking, Development Operations - DevOps, Open Source services and Server optimization. Lately Building WordPress hosting environments highly available and scalable in AWS/DigitalOcean/Google Compute/Azure. Certifications such as: Certified Ethical Hacker - Red Hat Certified Engineer - Cisco CCNA. Expertise in: MIGRATIONS: Wordpress/Magento/LAMP/Cpanel migrations. Helped dozens of clients migrate their web sites and applications into the AWS, Digital Ocean, Google Cloud Compute. Design and build Web Servers with HIGH PERFORMANCE (LAMP, NGINX/python, Nginx/Varnish, Nginx/php-fpm, Jboss, Apache Tomcat and Varnish) - Improve and Fix performance issues, service optimization, security issues and deployments. WORDPRESS HIGH PERFORMANCE AND TRAFFIC SITES IMPLEMENTATIONS: Improve Wordpress performance, design a cloud hosting with complex services using Wordpress, Wordpress multisite, wordpress + woocommerce, wordpress with NGINX/varnish , integration with CDN, Memcached/Redis, Amazon S3, etc etc. Build an entire HOSTING environment from design, implementation and maintenance. MALWARE removal and analysis: WordPress / Magento / Joomla Malware removal and remediation, Incident handling and Forensics analysis. BOOST and optimize websites with: NGINX, Varnish, REDIS, Amazon S3, Memcached, APC, apache tunning and mysql tunning, Amazon CloudFront and more. Amazon Cloud Computing ( AWS ) - AMAZON EC2, Amazon CDN S3, Amazon RDS, Amazon ELB, Amazon AutoScaling, Amazon VPC, CloudFront, Route53, etc. Also Management of multiple Control panels like Rackspace Cloud Computing, SoftLayer, GoDaddy, HostGator, dreamhost and MediaTemple. DevOps and Continuous integration: Docker + vagrant, Vagrant + Puppet, Puppet + Git, Docker + Ansible. Continuous integration with Jenkins, travisCI, distelli and more... Designing and deploying scalable & Highly available systems such as: Amazon Load Balancing (ELB), Hearbeat, HAProxy, Mysql cluster, Nginx Load Balancer, Apache cluster... Network and web security such as: Vulnerability Assessments, Hardening servers, security audits, Penetration testing, Virus/Malware/Threats/Vulnerabilities countermeasures, web security, fail2ban, Tripwire-AIDE-OSSEC, mod_security, mod_evasive, Denial of Services (DDOS) countermeasures, Firewalls (iptables, CSF and apf), etc. VPS: Cpanel / WHM / Plesk / DirectAdmin / Webadmin - Migrations, management, hardening, configuration, maintenance and high level of Administration. Databases Administration such as: Mysql tweaking and tunning, MongoDB, load balancing and Mysql replication (Master & Slave) for High traffic. Database: Mysql tweaking and tunning, MongoDB, ElasticSearch, Apache Solr, Sphinx, lucene, MariaDB, Postgresql replication & Pgpool, Mysql load balancing and Mysql replication (Master & Slave) for High traffic. Networking: TCP/IP high expertise, NAT, FIREWALLS, CISCO routing and switching and Packet analysis with tcpdump and wireshark. Storage solutions and Directory management: SAMBA, NFS, FTP and sftp. LVM and RAID*. SCRIPTING: Bash and python. Proficient with MAIL Servers: postfix, sendmail and Zimbra. Source control versioning: GIT and SVN. Deploying and maintaining Monitoring systems such as: nagios, ZAbbix, cacti and Jboss Operation Network (JON). Research & development (R & D) for any open source service and technology.

$24.80 /hr
11,699 hours

Vyacheslav D.

Vyacheslav D.

Microsoft Certified Professional: MCSE,MCSA,MCITP EA. Windows Admin.

Ukraine - Tests: 10 - Portfolio: 11

Dear client. I want to propose my 14 years experience for advantage in any of your projects which related to Microsoft platform. My point always - solve all tasks with maximum effectiveness and less expenses. Main specialization of my expertise - Active Directory/DNS/DHCP, System Center components and Private Cloud, Azure technology, Exchange servers. My knowledge and skills proved by Microsoft certificates which you can find in my portfolio. Looking for interesting projects or short time job. I can help with planning, implementation and support of infrastructure for small or big companies. I can help in troubleshooting and resolving of complex cases. Here is list of products I am proficient and can help in planning, supporting and troubleshooting: = Microsoft Windows 2008/2012 server products = Windows Vista/7/8/10 desktops client products = System Center components = Azure cloud technology = MS Exchange 2007/2010/2013/2016

$45.00 /hr
4,440 hours

Li Hao

Li Hao

Twitter Bootstrap, Php, Mysql, Html5, Css3 Top Developer

China - Tests: 6 - Portfolio: 8

Hello. My name is Li Hao. I am frontend senior developer. I have full experience with php, mysql, Twitter Bootstrap, javascript and I am ready for start now for you. Fast Reply, Provide perfect result.. Please contact me..Always I will best for you and your job.. * Skills --- HTML5, CSS3, Javascript, JQuery, Twitter Bootstrap, HTML4, XHTML, CSS2, AJAX, JSON, LESS, SASS --- PHP, MySQL, Laravel, CodeIgniter, CakePHP, Yii, Wordpress --- Google Maps API, Dashboard Chart, Google Analytics, Google Search --- Social Network API, Paypal API, Amazon API, Authorize.Net * Quality is Job One!! * Fully dedicated to your project with a keen eye for detail. * Fast turn around time. * 100% money back guarantee if not satisfied for any reason. * Good communication and High quality is job one. * Almost time available on skype. * Very familiar with Web based technique and Web Frameworks Hope cooperation with you! Best Regards Li.

$33.33 /hr
255 hours

Zhang DeXi

Zhang DeXi

iOS, Android App Developer

China - Tests: 5 - Portfolio: 4

✅ 5.00 / 6 Jobs Having 7+ years of experience in mobile development area since the launch of new smart phones in 2009, I've been called Mobile Dev Veteran during all works throughout iOS and Android app building. I am a highly-skilled software engineer and got some certifications by Apple and PCE. You can see the certifications and some past works on my profile. To prove my past works, I can show them via screen sharing or provide IPA/APK files to you. My majoring fields are as following. 1) Native iOS application development with Objective-C and Swift on Xcode. 2) Native Android application development with java on Android Studio/Eclipse. 3) Cross platform app development with phonegap, xamarin, cordova and ionic framework. 4) Website and Admin-panel, Frontend, back-end API development with Ruby on Rails, Angular JS and ASP.NET 5) Parse.com and AWS server as backend I'll be happy to discuss with great ideas of yours and be part of those projects

$30.00 /hr
26 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
67 hours