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Cryptography Job Cost Overview

Typical total cost of Upwork Cryptography projects based on completed and fixed-price jobs.

Upwork Cryptography Jobs Completed Quarterly

On average, 8 Cryptography projects are completed every quarter on Upwork.

8

Time to Complete Upwork Cryptography Jobs

Time needed to complete a Cryptography project on Upwork.

Average Cryptography Freelancer Feedback Score

Cryptography Upwork freelancers typically receive a client rating of 4.94.

4.94
Last updated: July 1, 2015

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  1. Andrei Volkov

    Andrei Volkov Agency Contractor

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

    Belarus - Last active: 1 day 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
    983 hours
    4.98
  2. Girish V.

    Girish V.

    Perl,node.js crypto coder with TCP/IP networking, linux skills

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

    Girish is a seasoned UNIX professional with rich networking experience working with protocols, low level protocols encoding, solving tough interop issues, reading RFCs, implementing standards, working on e-mail spam control, mail servers, firewalls etc. Also have excellent node.js and jquery skills. I am also experienced in MEAN, mongodb, facebook integration, oauth2 et al Specific expertise is on OpenBSD, perl coding, C and web technologies such as jQuery , javascript and products development.His open souce work is: http://gayatri-hitech.com Familiar with IPsec, L2TP, OpenVPN, PPTP VPN technologies, spam control, email technologies. I am also highly experienced in security areas, crypto, algorithms and UNIX environment's challenges and technologies. I am a systems programmer with high focus on programming correctness and efficiency. I offer 100% refund policy on dissatisfied work.

    $44.44 /hr
    188 hours
    4.54
  3. Bonfix N.

    Bonfix N.

    Lead developer(desktop,mobile,web), Project Manager and SEO expert

    Kenya - Last active: 1 month ago - Tests: 4 - Portfolio: 8

    I've got excellent skills in Java, Android, PHP, C++ and project management. I develop websites with security and SEO in mind. I develop applications in the following platforms: 1. Web - PHP - HTML - CSS - JavaScript - Twitter Bootstrap - AJAX - Laravel framework - MySQL - Twitter, Facebook and PayPal API’s - MVC 2. Desktop • Windows - Java - C#.NET - C/C++ - Python • Linux - Java - C/C++ - Python •Mac - Java - C/C++ - Python 3. Mobile - Android I've had past projects in: - Java cryptography - Android SMS and call spying application - REST and JSON between Android and Web servers. - PHP MVC framework, AJAX - Windows Text Editor Currently, I'm looking for opportunities in Desktop software development , web and Android application development including building apps from scratch and customization of already available apps.

    $22.22 /hr
    3 hours
    5.00
  4. Muhammad awais F.

    Muhammad awais F. Agency Contractor

    C#,VB,VBA, Web Scrapping, Office automation, Website development

    Pakistan - Last active: 22 days ago - Tests: 11 - Portfolio: 11

    Over all 12+ years’ experience in Business Analysis, Software Design, Software Development, & Project Management. 7+ year’s extensive experience in enterprise software development using Microsoft’s .NET platform. Completed 23 odesk jobs successfully. Worked more than 1500 hours. Please contact me if you need best results in C# Application Development Visual Basic.NET MS Access and Excel ( office automation and VBA) Visual Basic 6 MS SQL Server (DB Design,Optimization, Stored Procedures etc) ASP.NET PHP Website Scrapping

    Associated with: Bitwise Soft

    $15.00 /hr
    1,836 hours
    4.98
  5. Vedanarayanan G.

    Vedanarayanan G. Agency Contractor

    Software Technology Solution Provider

    India - Last active: 6 months ago - Tests: 4 - Portfolio: 2

    I have over 20+ years of experience in core software development. I started as a software engineer and my last job was CTO in a privately held organization. Currently consulting on embedded systems and teaching data structures & algorithms. I worked in text/data mining domain. Good knowledge in Corejava, J2EE, Oracle/SQL and XML. Hands-on in publication domain. Extensively worked in parsers (Lex/Yacc), language analysis. Architected CASE tools for SGV Sarc (www.sgvsarc.com). Mentored the team members very well. I have managed multiple projects (more towards technical than managerial) and provided optimal and effective solutions to any software problem. I am honest, likable by team members and people should love to work with me. Hands on in reverse and forward engineering, parsing, text/data mining and profiling technologies, language analysis, data structure & algorithms, PSP/TSP, project management. Have exposure to SW-CMM. Visited USA 6 times on B1

    Associated with: Pluma Knowledge Solutions Pvt Ltd

    $33.33 /hr
    71 hours
    5.00
  6. Volodymyr Kostanda

    Volodymyr Kostanda Agency Contractor

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

    Ukraine - Last active: 2 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 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
    15,256 hours
    4.90