Operating Systems Development Freelancers

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Operating Systems Development Job Cost Overview

Typical total cost of Upwork Operating Systems Development projects based on completed and fixed-price jobs.

Upwork Operating Systems Development Jobs Completed Quarterly

On average, 2 Operating Systems Development projects are completed every quarter on Upwork.

2

Time to Complete Upwork Operating Systems Development Jobs

Time needed to complete a Operating Systems Development project on Upwork.

Average Operating Systems Development Freelancer Feedback Score

Operating Systems Development Upwork freelancers typically receive a client rating of 4.64.

4.64
Last updated: May 1, 2015

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  1. Daniel Z.

    Daniel Z.

    Highly skilled API integrator, PHP (ZF) Coder and Project Manager

    Poland - Last active: 1 day ago - Tests: 7 - Portfolio: 6

    Goal: Project and develop high quality apps for your success. Profile: OOPHP & Zend coding, IT consulting and business analyst, project coordinator and manager, Other skills: Apache, Bind, SSH, bashscripting, Memcached, Github, Solaris, Oracle, MySQL, Radius, AD, expert knowlegde of many *ux and windows systems Advantage: Project and implementation of many web apps. Most of it projected and developed by myself using Zend Framework, Google API (youtube, gdata), social API (twitter, facebook). Some of it integrated with operating systems or AAA software (radius, ldap). Usually Design Patterns were used (like Template Method, Version of Control, DAO, Dependency Injection, Decorator and so on). Some application built upon a structure of web services (XML, REST, JSON), some using jQuery and AJAX. Tools and technologies: Apache, radius, bind, ldap, Zend Framework, XML, SOAP, Linux, Linux daemons, Memcached, Sockets, REST, JSON, Oracle, MSSQL, MySQL, Design patterns, MVC, SVN, BASH, PHPUnit, Xdebug, Unit testing, Google Youtube API, Google Gdata API, Google Maps API, Facebook API, PayU API

    $35.00 /hr
    1,615 hours
    4.98
  2. Gourav Shah

    Gourav Shah Agency Contractor

    Cloud, EC2/AWS, Devops, Big Data, NoSQL, Chef Puppet Ansible Expert

    India - Last active: 1 month ago - Tests: 7 - Portfolio: 5

    I have designed and deployed mid to large scale highly scalable, fault tolerant, automated and secure IT infrastructures using cutting edge complex technologies such as cloud computing, aws/ec2, NoSQL databases, hadoop, load balancers, chef/puppet configuration management systems, varnish cache, nginx/apache web servers, solr search and indexing, virtualization, LAMP and python frameworks, RoR etc. I have worked as a Lead Operations Engineer, IT Manager, managing over 500 server in co located data centers running on various services such as python, java, mysql, postgresql, lamp technologies. Proficient in remote server administration, cloud computing, virtualization etc. I am proficient in libre/open source tools and technologies, command line utilities, scripting, configuration management systems, source code management, computer networks, CMS, Web Frameworks, LAMP, Python/PHP /Ruby on Rails applications deployments etc.and enjoy working on the complex problems and posses excellent troubleshooting skills. I have founded a consulting firm by name Initcron, which is now a AWS Consulting Partner. Initcron specializes in Cloud Computing, Devops, Big Data etc.

    Associated with: Initcron Systems Private Limited

    $50.00 /hr
    3,033 hours
    4.91
  3. Bhushan Kumar Sharma

    Bhushan Kumar Sharma

    Linux Servers AWS Cloud Hosting Security CPanel Plesk VOIP PenTest

    India - Last active: 1 day ago - Tests: 4 - Portfolio: 14

    Since 2001, I have been dedicatedly working with Linux Operating Systems & Open Source. Services Provided ::- Deployment, Configuration, Security, Hardening, Monitoring, Performance Tuning, Troubleshooting of Linux Server Roles AWS – Amazon Web Services Migration of Servers Hosting Panels like WHM/CPanel, Plesk etc Asterisk Dialers, VOIP and Call Center Solutions Customization of Linux Kernel & Distro with Rebranding Faculty of Post-Graduate Degree in Computer Sciences. Firewalls & Gateways Linux HPC - High Preformance Clusters Remote Server Support & Troubleshooting L3/L4 Security Auditing of Servers & Websites Cloud & Virtualization Technical Writing VPN - Site-to-Site, Road-warrior Vulnerability Assessment & Penetration Testing Kayako

    $16.67 /hr
    3,255 hours
    4.85
  4. Muhammad Akmal

    Muhammad Akmal Agency Contractor

    Cisco Certified Engineer CCNA&CCNP, System admin and Virtualization

    Pakistan - Last active: 1 day ago - Tests: 7

    I am a Cisco Certified Network and Security Professional with more than 15 years experience in Managed Network and Security Services. I have expertise in routing, switching and Network Security across all industry leading vendors. My passion to deliver quality solutions has taken me to full-time freelancing, with a loyal clientele base spanning the globe. I am available around the clock and ready to provide expert assistance as and when my clients call and in their preferred time-zone. --- Cisco--- Cisco 1700 Cisco 2500 Cisco 2600 Cisco 3800 Cisco 7200 Cisco 800 Cisco 1800 Cisco 1900 Cisco 2800 Cisco 2900 Cisco 3900 Cisco RV Seriese WLC 5500 WLC 4400 WLC 2500 cisco aironet 1000 cisco aironet 1100 cisco aironet 1200 cisco aironet 1300 cisco aironet 1600 cisco aironet 2600 cisco aironet 3600 Cisco ASA 5500 Series Cisco AS 5300 Series Cisco AS 5400 Series Cisco PIX 500 Cisco Switch Catalyst 2960 Cisco Switch Catalyst 3560 Cisco Switch Catalyst 3750 Cisco Switch Catalyst 3850 Cisco Switch Catalyst 4500 Cisco Switch Catalyst 4900 Cisco Switch Catalyst 6500 Cisco 4900 4900M Series Cisco Nexus 5000 Series Cisco Nexus 7000 Series cisco Small Business 100 cisco Small Business 200 cisco Small Business 300 cisco Small Business 500 --- Juniper --- Juniper J Series ->Juniper SRX Series SRX100 SRX110 SRX210 SRX220 SRX240 SRX550 SRX650 SRX1400 SRX3400 SRX3600 SRX5400 SRX5600 SRX5800 ->SSG Series SSG5 SSG20 SSG140 SSG320M SSG350M SSG520M SSG550M --- HP --- HP 6600 HP 5820 HP 5800 HP 5500 HP 5100 HP 5120 HP 3800 HP 3600 HP 3500 HP 3100 HP 2620 HP 2530 HP 830 HP 1910 HP 1810 HP 1410 HP 1405 --- Sonicwall --- TZ 215 TZ 210 TZ 205 TZ 200 TZ 170 TZ 180 TZ 105 --- NetGear --- AC1900-Nighthawk Smart WiFi Router AC1750-Smart WiFi Router AC1600-Smart WiFi Router AC1450-Smart WiFi Router AC1200-Smart WiFi Router AC1200-WiFi Router N900-CENTRIA WiFi Storage Router N900-WiFi Router N750-WiFi Router N600-WiFi Router N300-Trek Travel Router and Range Extender N300-WiFi Router N450-WiFi Router N300-WiFi Router N150-WiFi Router --- Routers & Firewalls -- Vyatta Pfsense MikroTik D-Link Routers and Switches CehckPoint Cybercoam samsung ubigate routers Riverbed --- WatchGuard --- XTM 2 XTM 3 XTM 5 XTM 8 Firebox X1250e Firebox X750e Firebox X550e Firebox X55e/X55e-W Firebox Edge X20e/X20e-W Firebox Edge X10e/X10e-W Firebox X5500e Firebox X6500e Firebox X8500e --- fortigate --- Fortigate 30B Fortigate 30D Fortigate 50A Fortigate 50b Fortigate 60c Fortigate 60D Fortigate 100c Fortigate 100D Fortigate 150D Fortigate 300A Fortigate 300B Fortigate 300C Fortigate 300D Fortigate 1000A Fortigate 1000C Fortigate 1000D --- Dell --- Dell Smart Lan Dell 3500 Dell 7000 Dell N200 Dell 6200 Dell 5500 Dell S-Series Dell Z-Series Dell N400 Dell 8100 --- Zyxel--- Zywall USG Series Zywall P Series I also have good understanding and work experience of -Microsoft family of servers and clients operating systems -Cloud Service Providers • Aamazon Web Services • Azure • Rackspace • Linode -Backpup Products • Symantic Backup Exec -Open source VPN solutions • openVPN • openSWAN • strongSWAN • Logmein Hamahi • -Virtualization Solutions • Hyper-V • Vmware • Xen -RRM Tools • Kaseya • Labtech • AutoTask • Connectwise • ManageEngine • Catci • OpenNMS • Solarwinds • Nagios • WhatsUP Gold • PRTG • MRTG • Microsoft Visio Linux Distros • Redhat • Debian • Ubuntu • Centos • Fedora • clearOS • FreeBSD • MacOS

    Associated with: Aliado Inc Agency, Cloud Support Agency

    $33.33 /hr
    1,347 hours
    4.76
  5. BP Singh

    BP Singh Agency Contractor

    *MSP Consultant, Kaseya Consultant,labtech, Exchange, Vmware,AD*

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

    ITechServ is a company with expertise in IT infrastructure management and has certified people having expertise in their skills. A MCSE certified guy handles Microsoft systems and CCNA Tech handles Cisco firewalls, routers and switches. So we believe in that every task/issue/work needs to be handled by a resource having expertise in his area. We work as a team to complete IT infrastructure project. Provide tier 1, 2 and 3 level supports as a team and provide the Best services so that the delivery of the work has a quality and is done in the minimal time. We provide IT services with a difference.

    Associated with: ABCTECHSERVE, ITechServ

    $33.33 /hr
    7,786 hours
    4.70
  6. Ahmed B.

    Ahmed B.

    pk.linkedin.com/in/ahmedbilalmir

    Pakistan - Last active: 1 day ago - Tests: 2 - Portfolio: 4

    My aim is helping my customers on the technologies below: • Cloud Computing, Office365, ADFS, SSO, Google Apps, SaaS, BPOS, Microsoft Online Services • MS Exchange Hosting Solution, Administration of Global Messaging (Exchange Server E2k, E2k3, E2k7, E2010, Administration/up-gradation/transition/migration/Design) • BlackBerry Enterprise Server, BlackBerry Enterprise Server Express (BES 3.6.X, 4.0.X, 4.1.X, 5.0.X, BESx, Administration/Cut-Over, up-gradation/migration/Design) • Microsoft Application Virtualization APP-V 4.6 SP1, Microsoft Lync2010, Live Communication Server, Live Webmail, SharePoint Online, Lync Online. • Virtualization, Hyper-V, SCVMM, App-V, • Exchange High Availability DAG, Clustering LCR, SCR, CCR • SMS (System Management Servers), MOM (Microsoft Operation Manager), NetIQ, Remedy • Backup Plan for CA BrightStor (ArcServe) (Backup solution for Tape Library).

    Groups: Microsoft Certified Professionals

    $25.00 /hr
    1,402 hours
    4.96
  7. Volodymyr Kostanda

    Volodymyr Kostanda Agency Contractor

    iOS/Android/MacOS/Win/ObjectC/C#.NET/C++/Delphi/Java/Web/JS/ASP/PHP/QA

    Ukraine - Last active: 10 days ago - Tests: 42 - Portfolio: 41

    Owner and CEO at AdoriaSoft LLC. AdoriaSoft offers full cycle software development services and implements all stages of projects for our customers: - Research and estimation - Requirements definition - Architecting - Development - Graphical design and User experience design - QA - Support and updates Platforms that we develop for: - iOS (iPhones and iPads of different versions) - Android phones and tablets - MacOS - Web - Windows desktop - Windows Server - Windows CE - Windows Mobile PPC and SP 5.0, 6.0, 6.5, 7 editions We - have different real devices for testing (Android phones and tablets, iPhones, iPads of different generations, Macbooks, etc), no emulators. - work with both native and crossplatform frameworks - use an established design/development/testing lifecycle, follow scrum - have our own development servers with tasks management system (JIRA), source control (Git), continuous integration and build server (Bamboo), etc. - can easy work with time zones like PST, EST, etc. - offer high quality and cost effective solutions for our customers Technologies/Languages/Libraries/Frameworks: - ObjectiveC, iOS SDK, Mac OS SDK, XCode - Java, Android SDK - C++, STL, Boost, ATL, WTL, COM, MFC - Windows API, DirectShow, DirectSound, Sockets, Completion Ports, OLEDB, TAPI, GDI - C#, Managed C++, ASP.NET, LINQ, ADO.NET Entity Framework, WPF, Compact Framework, Mono.NET, Monotouch, Xamarin - Appcelerator Platform, Titanium, PhoneGap - MS SQL Server, T-SQL, Oracle, MySQL, NoSQL, MongoDB - Cloud platfoms: Amazon Web Services ( AWS ), Microsoft Azure - Web technologies: REST and SOAP web services, JavaScript rich client libraries, HTML5, CSS3 Our competences: - business automation software - System utilities for MacOS, Windows and mobiles platforms - Information security, cryptography, steganography - client-server applications - Wireless 3G/4G, Bluetooth, WiFi applications - VoIP, voice codecs, data signal processing - Complex Web applications and portals (ASP.NET, PHP, REST web services, JavaScript rich clients)

    Groups: Application Developers Alliance

    Associated with: Adoriasoft

    $29.00 /hr
    15,167 hours
    4.90
  8. Lawrence K.

    Lawrence K.

    Information Technologist

    Kenya - Last active: 06/26/2014 - Tests: 5 - Portfolio: 1

    Am an Information Technologist and my job experience is incline more into Web/Internet researching since I believe that current and up-to-date Information is so much available on the Internet. As an Information Technologist I understand how Information is so vital and important on our daily lives so I choose to learn and provide competent service in regard to this. So my main goal is to provide quality and up to date service to every client and a to be a competent contractor.

    $4.44 /hr
    1,144 hours
    5.00