Top Upwork Freelancers

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  1. Andy D.

    Andy D.

    Algorithm Scientist - Machine Learning, Computer Vision, Analytics

    United States - Last active: 1 day ago - Tests: 1

    For managers in companies who have a complex manual process in need of automation. I am an algorithm scientist with Masters Degree in Signal Processing from Purdue University, and a penchant for outside-the-box thinking. I offer innovative algorithms designed to solve challenging and costly problems. I have over eight years experience designing algorithms, and pull from a rich background of skills and knowledge including: Machine Learning, Computer Vision, Image Processing, Genetic Algorithms, Neural Networks, K-Means Clustering, Support Vector Machines,Time Series Analysis, Fourier Analysis,Regression, System Design and Modeling, Linux System Administration, Website Data Extraction, Statistical Analysis, Predictive Analytics, Matlab Modeling, and C/C++ Programming. Unlike other algorithm scientists, I have leadership and communication skills that can be leveraged to help guide teams of developers to implement customer-facing or real-time versions of the solutions provided.

    $80.00 /hr
    265 hours
    5.00
  2. Johanne H.

    Johanne H.

    Innovative MEAN Stack developer

    Norway - Last active: 1 day ago - Tests: 3

    "Business integrity is the most important factor for success" I have been starting programming since 10 years ago by learning C/C++ language. Deep and logical mathematical algorithms and implementing them using C/C++ language was my great hobby and I was confident of my skills. After 3 years later, I have jumped into the Web and Mobile Field. Meanwhile, I've accumulated and acquired great knowledge and skills, experience in cutting edge technology and modern MVC programming language. Especially AngularJS is my great and favorite one of them.

    $55.56 /hr
    31 hours
    5.00
  3. Eng.ahmed Mosad Moka

    Eng.ahmed Mosad Moka

    Electronics engineer and embedded system developer

    Egypt - Last active: 1 day ago - Tests: 2 - Portfolio: 7

    - five years of experience in the field of embedded system design - good experience in different microcontroller vendors - embedded c coding for different microcontroller (arduino , avr , pic , arm ,) -. 4 years experience if filed of FPGA developing using ( vhdl , verilog ) here you can find sample of my work on my you tube channel: https://www.youtube.com/channel/UCUw4Ouy6XlsT8T-WLyq_PCg/videos mail : moka8518@gmail.com skype name : ahmed.mohamed6065

    $15.00 /hr
    36 hours
    4.94
  4. Michelle H.

    Michelle H.

    Sr. Level Software Business Analyst and Project Manager

    United States - Last active: 3 days ago - Tests: 10 - Portfolio: 19

    Passionate about user drive design. Love great design that is perceived by the end-user as great design. Product Management, product development, UI/UX design including wireframes, primarily in healthcare related software development. Strong background at workflow optimization in applications. 11+ years in healthcare related technologies. Expert at client interviews, building user requirement stories, Agile planning, and working with development team to deliver milestones. Skills / Expertise: Rally Dev - Expert Version 1 - Experienced Jira - Working Knowledge Axure iRise Balsmiq 15+ years experience in corporate and non profit design (Photoshop, Illustrator, Fireworks), Skilled at short and long term project management. Proven success at turning new ideas into launched products through building successful cross-functional teams, fostering a culture of design-driven product development and user experience innovation. Able to work independently and in teams. Strong communication skills.

    $39.00 /hr
    72 hours
    4.97
  5. Eugene Dementiev

    Eugene Dementiev

    *nix geek

    Russia - Last active: 9 days ago - Tests: 7 - Portfolio: 1

    Over the last 10 years, I was working with *nix-like OSes. I started from FreeBSD and OpenBSD, and now I use mostly Gentoo Linux. I have developed a big bunch of parsers/small scripts, configured a lot of different software. I have experience with a few different programming languages, mostly Python and bash. I've tried myself in web development (using flask, mongodb, a little of jQuery, etc). At my main job I work as a DevOps/Systems administrator. I use Ansible, ElasticSearch, Gitlab with Gitlab CI, pacemaker, docker, and many more cool things! I also mentor junior developers. Right now I need some extra money, so I'd love to do the following: 1) Ongoing sysadmin stuff. RAID, gmirror, software installation, compilation 2) Automation tasks with Ansible 3) Work with docker containers, write dockerfiles. 4) Do some Python coding to glue things together I can dedicate a few hours every day with more hours on holidays. I usually work between 7-10am CST (8-11am EST).

    $22.22 /hr
    119 hours
    4.96
  6. Timur Birsh

    Timur Birsh

    Unix Systems Expert and Oracle DBA

    Kazakhstan - Last active: 20 days ago - Tests: 7

    Hello, Over the last 15 years, I am working with the following Unix systems: BSD based systems, Solaris and Linux distributions including Debian, RedHat Enterprise Linux, CentOS, Oracle Linux and Ubuntu. Over the past years I have developed a wide range of solutions: VPN, proxy, mail, web, file, Samba, DNS, DHCP, SSO, database, monitoring, backup, virtualization and high availability servers. I am Oracle DBA with the 5 years of experience. I work for financial institution. On my control a 21 databases. Mission critical and big databases runs on the IBM hardware and AIX operating system. Other databases runs under control of Solaris (SPARC) and Linux operating systems. For data protection we use Data Guard. One of the best products of the Oracle is Enterprise Manager Cloud Control. We use it for the databases and hosts monitoring. Its management repository contains a lot of information. It is very useful in building of custom applications (reports, etc). I have work experience with the following Oracle RDBMS versions: 8i/9i/10g/11g. I am big fan of a tasks automation. For small jobs I use shell scripts. For jobs that have complex logic I use Python or Perl. For complex text processing I use awk, sed and shell scripts as a glue. I have 5+ experience of C language programming for Unix. Hardware administration of the following vendors: Oracle (Sun), HP, Dell. I am contributor of the following free software projects: Debian (http://qa.debian.org/developer.php?login=taem@linukz.org), Transmission Bittorrent Client, inadyn Dyndns client. I maintain the following opensource programs: * sXid - http://linukz.org/sxid.shtml * cd-discid - http://linukz.org/cd-discid.shtml I use Git for source code management. I would be happy to help you. Please do not hesitate to contact me.

    $33.33 /hr
    18 hours
    4.97
  7. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Last active: 1 month ago - Portfolio: 1

    Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

    $33.33 /hr
    40 hours
    5.00
  8. Andriy Surovets

    Andriy Surovets

    Programmer / Developer

    Ukraine - Last active: 2 days ago - Tests: 2

    I am working as software developer for 7+ years. During this I was working on different projects. My primary tasks were Java development, implementing automated and unit test cases, defining requirements. Experience: 2015.03- 2015.07 Assessment reporting tool(Amplify part of News Corp) Web based assessment tools for schools. Provides wide reports for teachers and parents, what helps track students’ performance. Also it’s supports online access to teachers for creating assessments, also uses different teaching tactics and track educational results. Tools and technologies: Java, Spring MVC, Hibernate, Freemarker, JQuery, SQL Server, Maven, Ant, HTML, CSS, GitHub, JUnit, Jenkins. Role: Java developer,Bug fixing and create new functionality in front-end and back-end. 07.2014 -10.2014 Nextance Trilogy. inc Nextance is a system controls contracts, and the relationships they govern. Improving standardization and control of contracts, as well as gaining visibility into their content, improves the results of any business initiative you have in place today. You can benefit from Nextance Contract Performance Management by improving the standardization, visibility and control of your contracts. Tools and technologies: Java/C# Oracle/AG Tamino XML Server/IBM DB2 XML/XSLT/CSS/JS Role: GUI modifications;Business Logic Modification; Add new functionality,Configurated manager 06.2013 - 07.2014 SmartMix Trilogy. inc Provide development, support, testing and continuous integration of numerous products, which are under development of Trilogy network. Working on investigation and development activities on SmartMix direction. Tools and technologies: Java, CSS, JavaScript ,Microsoft SQL Role: GUI modifications; Business Logic Modification; Add new functionality,Configurated manager 03.2012 - 06.2013 Virtual MGA Virtual MGA has a set of core features that are generally present across all clients. In additional to the core features we also offer some premium features that can be layered on top of the core product. Examples of some of our premium features are: Active Contract Management (the ability to manage various contracts both new and expiring and syndicate transactions across multiple contracts), Active Aggregate Management (setting aggregate thresholds by Zone or County or State or a combination of all these s 06.2011 - 02.2012 Hewlett-Packard Create backend functional for Router and coverage this functional Unit test Tools and technologies: C,Java(JUnit),XML Role: Business Logic Modification; Add new functionality,Write JUnit Test 10.2010 - 06.2011 DCM Trilogy. inc The Versata Distribution Channel Management (DCM) software manages the relationship between financial services institutions and the distributors that sell and service their products. Tools and technologies: Java, JSP, XML, XSLT, CSS, JavaScript and OQL (Object Query Language) PostgreSQL, Microsoft SQL, Oracle, DB2 XML/XSLT/CSS/JS Role: GUI modifications; Business Logic Modification; Add new functionality,Configurated manager 10.2007 -10.2010 Nextance Trilogy. inc Nextance is a system controls contracts, and the relationships they govern. Improving standardization and control of contracts, as well as gaining visibility into their content, improves the results of any business initiative you have in place today. You can benefit from Nextance Contract Performance Management by improving the standardization, visibility and control of your contracts. Tools and technologies: Java/C# Oracle/AG Tamino XML Server/IBM DB2 XML/XSLT/CSS/JS Role: GUI modifications; Busines 06.2006 - 10.2007 Artemis 7 Trilogy. inc Artemis 7 is a web-based investment portfolio management system that supports organizations that wish to implement a top-down management process to optimize the selection and execution of investments. Tools and technologies: Java/AWT, Oracle, Abbot,JUnit Role: GUI modifications; performance tests automation Skills: Programming Languages/ Technologies: * Java,C#,C++,JavaScript,PHP,SQL, XML,XSLT, HTML,CSS RDBMS: * Microsoft SQL Server * Oracle * PosrgreSQL * MySQL Frameworks: * Spring * Hibernate * Struts * JUnit Development Tools: * Eclipse * MyEclipse IDE * NetBeans IDE * IntelliJ IDEA * Tortoise SVN * JProfiler * Firebug * Apache Ant * FindBugs, CheckStyle, Coverage, MI, PMD code quality metrics * Visual Basic Script debugger

    $25.00 /hr
    1,586 hours
    5.00
  9. Marius V.

    Marius V.

    Certified Systems Engineer

    Romania - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    I am a System Administrator focused on Microsoft products with 8+ years of professional experience on IT companies. I have extensive experience installing, configuring, administering and maintaining operating systems (Windows Server 2003, 2008, 2012) and services like AD, DNS, DHCP, WDS, Hyper-V, Exchange, SCCM, SCOM. Time spent working in this area has allowed me to achieve knowledge and improve my skills in computing that would make me well suited to assist you in accomplishing your goals. I work methodically and efficiently to insure that my partner is satisfied with the end result and the cost of job is well justified.

    $25.00 /hr
    127 hours
    4.97
  10. Jagjeet Singh

    Jagjeet Singh

    Labtech, Kaseya, ConnectWise Consultant

    India - Last active: 6 days ago - Tests: 1

    Technically knowledgeable and service oriented IT professional experienced in providing solutions to customer and end-users with proven technical expertise is seeking for a rewarding, challenging and personal growth where I can best use my knowledge and experiences in implementing, managing and supporting the IT infrastructure and end-users. Specializing in designing, implementing and maintaining Enterprise IT platforms, TRT takes the stress, risk and complexity out of managing core IT systems. Maintain complete control over the environment we take accountability for keeping it running efficiently and securely.

    $22.22 /hr
    1,843 hours
    5.00