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

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
11,701 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

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

Brandon Gould

Brandon Gould

Process-oriented Unix/Linux Developer

Canada - Tests: 2

I'm a process-oriented developer with a strong focus on Linux and Unix applications. My experience is varied from making cosmetic tweaks to various applications, to developing driver software for various hardware devices. I do also have a working understanding and experience with the windows environment. I do prefer to build long-term relationships with my clients, and do endeavor to be your go-to guy for software development and integration. It's very important to me to maintain a varied and multi-dimensional amount of experience. For this reason, I do prefer smaller projects over larger ones. I'm flexible with my working hours, and work out of a 24/7 co-working space. What this means for you, as the client, is I do not have the typical distractions of working from home. I am a very goal-oriented individual, and my biggest weakness is missing sleep when I'm presented with an exciting challenge to break through. I work on milestones, and one of my pet peeves is becoming disoriented on a challenge by leaving it half-done for the next day. I am also very, very keen on documentation! I spend a large amount of my time documenting proposed changes and integration drafts. I look forward to hearing from you!

$22.22 /hr
25 hours

Vivek Bhatia

Vivek Bhatia

Data Entry, Internet Research, Network and PC Troubleshooting

India - Tests: 2 - Portfolio: 2

I am working in IT Industry from last 10 years and i have worked on different project like web research, data entry, computer and network troubleshooting. I believe in excellence, high quality and always on time service to clients. My Skills are Web Research, Typing, Data-Collection, Data-Analysis, Google Docs, Pdf to Word, Image Filtering, Network and Computer troubleshooting. I assure you quality work with accuracy and on time Service.

$3.33 /hr
518 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

Sachin A.

Sachin A.

Expert in AWS, PHP, Server Administration, Migration, Automation

India - Tests: 5 - Portfolio: 5

I am working as Technical Architect and have major work experience in Server Administration and Project Management. AWS Services : EC2, S3, RDS, CloudFront, ELB, EB, CodeCommit, SES Hosting Services : AWS, GoDaddy, SiteGround, DreamHost Programming Languages : PHP Databases : MySQL, MongoDB Code Management Tools : Git, GitHub, BitBucket, CodeCommit

$25.00 /hr
48 hours

Lokesh Jangir

Lokesh Jangir

Expert Windows & Linux server Admin

India

Expert in windows and linux environment, skilled,self-motivated Engineer having experience in the linux & windows System Administration field for the past 6+ years. Have sound and hands-on experience in cloud environment especially in AWS,Solutionpro,Rackspace,Vcloud platforms, handling cpanel WHM,plsek and direct admin platforms. Area of specialization includes Server configuration hardening,Cloud migration,Configuration and installation of various services provided by AWS,Rackspace,vcloud .Monitoring tools configuration,VPS,web servers,vulnerability scanning,auditing,log management,web server(apache,iis,tomcat,nginx),backup,databases(mysql,rds,postgres),WHM Cpanel,Plesk ,Network monitoring, backup and recovery. VMware,Xen virtualization, Version Control system- SVN Subversion, GIT, Visual Source Safe etc..

$19.00 /hr
64 hours

Habibur R.

Habibur R.

Malware Removal | Web Security | Hack Recovery

Bangladesh - Tests: 1 - Portfolio: 8

I specialize in malware removal, webapps penetration testing, computer forensics, ethical hacking and linux server security. My Area of Expertise are: 1. Malware removal *- Identify the malicious code in website. and remove it. *- malware, phishing, spam removal and other malicious code removal. *- Antispam protection. *- confirmation with Google webmaster for malware status, request for removals from the blacklist if listed, work it until completed. *- secure website with guarantee!! 2. Ethical Hacking(White Hat Hacker). - hacked account recovery, - password recovery. - security analysis. - decode encrypted files. 3. Web security, penetration testing hack recovery - Spot exploit used by the hackers. - Vulnerability Assessment. - Server security. - Security analysis of database servers. - webapps penetration testing. - Restore hacked website. - WordPress, Joomla, Drupal, Opencart and custom PHP website security and prevent hack. - keep monitoring for future hack attempts for the coming weeks and if possible, patch the vulnerability that allows the hack - Install upgraded security to prevent further hacks - Integration your site with Cloudflare(www.cloudflare.com), free of charge, to make website bulletproof (also increases site loading speed) - ### secure website with guarantee! !### 5. Web Programming *- PHP, HTML, CSS, JavaScript, MySQL 6. DNS *- DNS (Domain Name System) manager, Custom DNS Record, Domain Transfer *- Move websites to new host without any downtime. 7. Analytics *- Google analytics, Piwik and custom analytics. 8. Other

$16.67 /hr
422 hours