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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, 4 Operating Systems Development projects are completed every quarter on Upwork.

4

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 4.66.

4.66
Last updated: August 1, 2015

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  1. 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
    3,771 hours
    4.85
  2. Andrei Volkov

    Andrei Volkov Agency Contractor

    Linux specialist (Sec/Opt/Dev, C/Perl/Python/PHP/BASH)

    Belarus - Last active: 2 days ago - Tests: 5 - Portfolio: 13

    Important: ------------------- Enhanced shield of your Web application with mod_security! Should be always. It is task #1 after installation ANY web application! ------------------- About Me and more: ------------------- I have over 16 years of work experience with Linux systems. This is the list of software and technologies with which I deal. This list is not full and expands day by day. I always can find right decisions if I found some problems. And I am always interested in looking for mostly economical and productive solutions. Of course, Cpanel, WHM, Webmin, Plesk .... I know how are working these web-wrappers and I support their. I can will tune and to make the checking of these wrappers. But that more important !! I can work without this))) Directly use configuration files of services and etc etc. Usually, it is better way on dedicated servers. ) TCP, IPv4 , IPv6, IPX ... - WiFi, WEP, WPA, WPA2 ... - SElinux, Apparmor, Smack, Tomoyo ... - LAMP ( Apache, Nginx, PHP, Perl, Mysql, Mongo), REDMINE ... - Cpanel, Zpanel, ISP ... - MySQL clustering and replication DNS servers ... - SENDMAIL, EXIM, POSTFIX (POSTFIXADMIN,MYSQL,DOVECOT,POLICYD) ... - HPC system: Torque, Maui, Moab for HPC clusters, Infiniband, FC interconnect, iSCSI, SCST, DRBD, OFED, OPENMPI ... - OpenLDAP ... - VPN with OpenVPN, PPTP, StrongVPN ... - Nagios, Zabbix, Ganglia, OSSEC ... - SVN, CVS, GIT ... - KVM, Xen, OpenStack, Proxmox ... - NBD, RAID, LVM ... etc etc During these years I have been in a large number of tasks related to administration of network devices, as well as with simple and complex server systems. I manage servers for the HPC tasks and for network infrastructure of Internet and Intranet - DNS,DHCP,*FTP,HTTP(S),MAIL etc etc. The main goals - the monitoring of the performance and the security. I also implement tasks of data backup and troubleshooting, support for the users. I have comprehensive work skills with systems based on Debian, Redhat, CentOS, SLES, OpenSuse. I've got more than 8 years of experience in developing the different software with use of C, Perl, Python, Bash, HTML on system and user levels. For example, very important skill in developing and the modification of RPM packages (rpmbuild, rebuild, kernels), custom kernels and etc etc. ------------------- Often: ------------------- How the standart service for VPS's and VDS's projects and dedicated servers: IDS, IPS, the control of contents of log's files, the control of load of the cpu, the memory, the hard disks; the backups of the databases and the files; install or update software, consultations. Emergency call via sms to cell phone. ------------------- STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. VERY OFFTEN: IF YOURS WP WAS HACKED 1. disable plugins 2. execute # diff -r dir1 dir2 3. repeat for plugins if you have last version of WP code: ~ 80% cases - problems: plugin low quality (look on author: from where and who is) ~ 15% cases - problems: theme low quality (look on author: from where and who is) ~ 5% 0day of WP also you need disable all shell function in php and enable suphp/suexec modes. STOP Windows and U/K/buntu etc. TIPS WITHOUT PAYMENT: ------------------- 1. I am getting a lot questions about reliability and quality distributives/clones Ubuntu. Results on practice - Ubuntu clones - worst for server. It is truth. If you $buntu guy, I can't help you right now. I only can recommend Debian way for server. =============== 3. Nginx of course is good program. For small/middle vps. But in serious projects - apache. Nginx will be suitable for frontend. It is only practice. Always for all web application should be mod_security module. Firewall of level of web application on 7 level of OSI. Each web application/site should be under own user in environment of vps or on dedicated servers. =============== 4. By topic Wordpress. For optimisation services of OS , namely system IO(type of disks or partitions) and DB(type of engines of tables), need to use empty installation (default variants). Most problems of work WP contains in itself - customized plugins or themes. For analyze pages need begin with such services as http://gtmetrix.com. =============== Sunday - day of rest. Or in emergency case - payment with double rate. best regards, Andrei odesk.by / upwork.link PS: With love from USSR. ;-)

    Associated with: UPWORK.LINK

    $16.00 /hr
    1,009 hours
    4.98
  3. MD. FARHANUR RAHMAN

    MD. FARHANUR RAHMAN

    Web Application, Admin Support, SEO Developer

    Bangladesh - Last active: 1 day ago - Tests: 10 - Portfolio: 5

    Hello, I am Md. Farhanur Rahman, a professional IT Developer from Bangladesh. I am currently working in Admin Support, Online Marketing, SEO and Web Development areas at oDesk. My primary concern is to ensure the perfect and satisfied service to my clients with highest performance. I already completed different Admin Support projects successfully and highly experienced working with Microsoft Office applications, Web Research, Data Processing, Personal Assistant and Project Management areas. I am proficient working with Online Marketing, SEO, Social Media Marketing, Content and Article Writing projects with most creative styles. I am experienced in Adobe Photoshop and Illustrator for Graphics Design Applications. I currently continue my study in HTML, CSS, Java Script, PHP for Web Application Development and WordPress, Joomla! for Dynamic Content Management Systems. Soon I wish to establish my career as a qualified Web Application Developer at oDesk. Thanks for visiting my profile, Md. Farhanur Rahman oDesk Certified Professional

    $4.72 /hr
    6,021 hours
    4.73
  4. Volodymyr Kostanda

    Volodymyr Kostanda Agency Contractor

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

    Ukraine - Last active: 1 day 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 easily 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
    15,297 hours
    4.90
  5. Md. Arif Mahmud

    Md. Arif Mahmud Agency Contractor

    Data Entry, SEO, Virtual Assistant, Web Research

    Bangladesh - Last active: 3 days ago - Tests: 6 - Portfolio: 19

    I am a full time freelancer for almost 4 years in oDesk. I am a Computer Science graduate and I know how things are going on online. My main goal is client satisfaction, and I believe in long term relationship. I assure to my client that they will get what they want. I can provide you the following services: - Data Entry - Data Processing - Data Mining - Web Research - Web Design - Graphics Design - WordPress - Website Management - Virtual Assistance - SEO - Social Media Marketing - E-mail Marketing and so on

    Associated with: Cromium IT

    $5.56 /hr
    2,892 hours
    4.98
  6. Chiemi Irene Alonzo

    Chiemi Irene Alonzo

    Techinal Support/IT helpdesk/DataEntry/Technical Writer/Java Developer

    Philippines - Last active: 1 day ago - Tests: 6

    To strive for excellence, to work in such an environment that will enhance my knowledge and career, where I can perform my management skills according to my strong Caliber and efficiency.

    $5.00 /hr
    1,103 hours
    5.00
  7. Vineet V. Agency Contractor

    Senior Mobile Developer / Architect / Consultant

    India - Last active: 1 day ago - Tests: 6 - Portfolio: 27

    An accomplished Software Engineer with specialization in core development for wireless application development in iOS, BlackBerry & Android platform. With 9 years of experience in IT industry.

    Associated with: CDN Software Solutions Pvt Ltd

    $17.60 /hr
    2,394 hours
    3.00
  8. Ahmed B.

    Ahmed B.

    pk.linkedin.com/in/ahmedbilalmir

    Pakistan - Last active: 7 days 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
    1,414 hours
    4.97
  9. Saroj Kar

    Saroj Kar

    Expert Technical Writer with Cloud Computing, Big Data experience

    India - Last active: 3 days ago - Tests: 7 - Portfolio: 7

    I am a System Administrator, Writer, and Editor with the architectural skills, experience and insight to computing platform infrastructure or data operation. Over the years, I have developed extensive in-depth understanding of Cloud Computing, Big Data, Virtualization, Web Services, Mobile Cloud, Social Cloud, DevOps, Internet of Things and other related platforms. My work history as a System Administrator, technical support, web research, administrative support, freelance writer, editor, blogger, proofreader, news desk writer etc. reflect the versatile I offer. I have exposure to following works experience: - System Administrator - Application Management - Technical Support - Customer Support - Data Entry - Data Extraction - Content Writing - Technical content Writing - Non Technical Article Writing - Web Based Research - Excel based jobs - Internet Marketing jobs - Research based jobs - OCR conversion

    $10.00 /hr
    4,054 hours
    4.98
  10. 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
    8,081 hours
    4.70