Top Upwork Freelancers

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  1. Roger Gartz

    Roger Gartz

    Business Intelligence Analyst with SAP BW experience

    Brazil - Last active: 4 days ago - Tests: 2

    BI Analyst/Architect with 6 years experience in SAP BW 3.x/7.x. Data modeling and development of InfoCubes, InfoObjetcs, DSO's, InfoSets, MultiProviders. Use of EDW architecture like LSA. Elaboration of generic Data Source SAP. ETL rules development in ABAP. Reporting with BEx, BO Web Intelligence, BO Dashboards, BO Analysis for OLAP and BO Explorer. Elaboration of functional specification. Process monitoring data load. Activation of BI Content and customization. Knowledge of PL / SQL.

    $20.00 /hr
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  2. Nataliia Nikolska

    Nataliia Nikolska

    Front-end developer

    Ukraine - Last active: 6 days ago - Tests: 4 - Portfolio: 10

    Past six months I'm actively engaged in the site layout using the following technologies: CSS3, HTML5 and JavaScript. I chose this direction, because I like the result obtained in the end. In my free time i'm studying Selenium WebDriver (as NodeJS module) to create the automated tests for web sites.

    $15.00 /hr
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  3. Oleg Boytsev

    Oleg Boytsev

    Information Security Engineer/Malware Analyst/Reverse Engineer

    Belarus - Last active: 11 days ago - Tests: 1 - Portfolio: 1

    5 years of experience in IT Security field. Highly motivated to solve interesting tasks. Core Qualifications and abilities: High skills in *nix systems administration and information security; Computer network attack/defense; Deep experience in web application security testing (according to OWASP guideline); Strong background in malware analysis and reverse engineering; Responsive, organization skills and the ability to work with minimal supervision; Ability to learn and apply new technologies effectively. Technical skills: Standards/Practices: OWASP standards, ISO 17799 Operating Systems: Windows, Linux, FreeBSD; Networking: TCP/IP, LANs, VPNs, Firewalls; Software: Ollydbg, IDA Pro, GDB, Nmap, Metasploit framework, Burp Suite, Sqlmap, Wireshark, Tcpdump. Programming languages: x86 Assembly, Python Network & System Security: implementing different kinds of tools for network (ModSecurity) and system security Vulnerability Assessments: have a strong background in web application security testing, buffer overflows, format string vulnerabilities Malware Analysis: familiar with tools and techniques that allow to analyse and describe an evil sample according to the best practices. Unpacking, disassembling, binary Debugging/patching, dynamic (behavior) analysis. Reverse Engineering: familiar with Ollydbg, IDA Pro and GDB. System administration: LAMP, DNS, iptables, etc.., know how to solve a vast majority of issues.

    $35.00 /hr
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  4. Mikhail Chugunov

    Mikhail Chugunov

    Java Developer

    Russia - Last active: 1 month ago - Tests: 1

    6 years of web-oriented Java software development. Expert in Spring framework related development. Last 5 years I took part in several enterprise-quality projects in various fields from property insurance to telcos. My objective is to deliver the highest quality for backend applications. Also I have some experience in front-end technologies including Javascript as well as with modern languages and frameworks like Play for Scala

    $11.11 /hr
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  5. Maksym Rybalchenko

    Maksym Rybalchenko

    java developer

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

    Hi there. My name is Maks and I am a software developer with a 10 year experience. During all that time I developed a lot of solutions for all kind of businesses from tiny entrepreneurs to large companies. Recently I started developing using java. Now it's my primary technology and I am on my way to achieve great results in this area. Hope my previous experience will be useful for you and waiting for a good cooperation.

    $10.00 /hr
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  6. Aleksandr Izmailov

    Aleksandr Izmailov

    web developer (server-side)

    Russia - Last active: 29 days ago - Tests: 2

    I specialize on developing web sites with php5 js css html and other related technologies. I prefer using nginx as web server. Also I well know python bash and ruby but prefer working with php. I know how to install setup and administer php nginx/apache mysql platform. I worked for more than 3 years as freelance developer and about 2 years (and currently working) as full-time server-side developer. Also I know how to work with different version control systems (git and mercurial).

    $11.11 /hr
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  7. Sergey Alekseenko

    Sergey Alekseenko

    IT manager

    Russia - Last active: 2 days ago - Tests: 1

    Education 1984, graduated from Saint-Petersburg Shipbuilding Institute Engineer in shipbuilding/repairing. Major academic courses highlights: Shipbuilding Technology Communication Information Management System. Software development Professional Experience Oct 2012-----Present, as freelancer Web design, js, php, java (for instance: www.capa-city.ru) Nov 2007----Oct 2012, air-company “Heli Sky Inc”, SAIF-Zone, UAE Ops manager cum It manager Operations management of company/project. Computer/network maintenance Users support Account department support Aug 2003----Oct 2007, air-company “Jet line Intl.”, SAIF-Zone, UAE Ops manager cum It manager Operations management of projects. Account department support Computer/network maintenance Users support May 2001----Aug 2003, SWC “Lanit-Terkom”, Saint-Petersburg, Russia SW developer (VC++, VB, PHP, Java, Perl) Small project manager Small team leader Oct 1998----May 2001, “Representative Office Of Stockholm in SPb”, Saint- Petersburg, Russia System administrator Creating and support network Users support Additional Information Nationality: Russian Federation Work permit in countries: Russian Federation Languages: Russian: native English: intermediate Technical Summary C/ C++, SQL, VB, Java, JavaScript,php, HTML, DHTML

    $22.22 /hr
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  8. Denis C.

    Denis C.

    Expert System Engineer

    Moldova - Last active: 1 month ago - Tests: 9

    PROFILE – A self-motivated and committed system administrator with exposure to a wide range of technical areas, focused on delivering best experience to the end-users – Nine years of experience in administering business–critical application stacks such as banking software, middle-ware, billing systems, Telecom-specific applications; troubleshooting complex issues, managing both production environments and databases of highly respected companies – Performed upgrades planning, software developing and documenting the knowledge – Highly adaptable and quick to learn new skills – Six years of customer service experience MAIN TECHNICAL SKILLS O/S: HP-UX, SunOS, AIX, RedHat, CentOS, Debian – installation/configuration Software: MySql Server – installation/configuration Apache Web Server – installation/configuration Nginx – installation/configuration Apache Tomcat – installation/configuration Redhat JBoss Application Server – maintenance Oracle WebLogic Application Server – maintenance Oracle Tuxedo – maintenance Oracle Database – maintenance CVS – codebase maintenance HP Quality Centre – configuration/maintenance SSH Server – installation/configuration Telecom–specific Billing Applications (Amdocs Ensemble, Oracle BRM) – maintenance Oracle VM VirtualBox – installation/configuration Languages: Python – 1.5 years Perl – 3 years AWK – 4 years Shell Scripting – 5 years SQL (mysql and Oracle) – 4 years Java – 0.5 years PROFESSIONAL EXPERIENCE – Billing System Engineer, Team Lead (3 persons in submission): 2010 - 2013 – Software Developer: 2008 – 2010 – Senior System Engineer: 2003 – 2008

    $16.67 /hr
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  9. Nenad Vico

    Nenad Vico

    Architect

    Serbia - Last active: 20 days ago - Tests: 4 - Portfolio: 1

    Java Architect, Over 10 years of experience using: J2EE, Spring, Hibernate, JPA, Struts, GWT, Smart GWT, WebServices, Applets, Servlets, Swing, Swt, Ant, Maven, Apache libraries, Dods, Axis, JUnit, EasyMock, Dwr, JasperReports, Velocity, FreeMarker, Code generators, Twter4j, REST, POI, Fax4J, CXF, JSF, Spring Boot, Spring Rest, Spring Security, Spring Integration, Spring Batch, Hadoop, Cassandra, Hbase, Hive, Sqoop, Solr, Cammel, Angular, Bootstrap

    $27.78 /hr
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  10. Ryan ODonnell

    Ryan ODonnell

    Python, Web-Stacks, and Go

    United States - Last active: 2 days ago - Tests: 3 - Portfolio: 2

    Experienced Python and Go full-stack web-developer. Bootstrapped many websites in Python and associated frameworks. Tasks included: full-stack administration on both Windows and Linux technologies, backend software development, and front-end responsive and mobile design. Can easily develop a working prototype of a website very quickly, and deliver a functioning product in an acceptable time frame. Cisco Certified technician willing to consult on various technology needs.

    $100.00 /hr
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