Top Upwork Freelancers

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  1. Gerry Litwin

    Gerry Litwin

    Senior Application Developer

    United States - Last active: 19 days ago - Tests: 1

    Highlights: Demonstrated record of high performance standards, including attention to detail, schedules, deadlines, budgets and quality work. Extensive experience in: Visual Studio (2005-2013) ASP.NET (2.0 - 4.5.1) SQL Server (2000-2014) DevExpress Excel C# ASP JavaScript Object Oriented Programming .NET Compact Framework SQLLite MySQL Oracle Sybase HTML DHTML XML MS Visual Studio 6 MS Visual Studio .NET 2002/2003/2005/2008/2010/2012/2013 MS TFS MS IIS MS Project MS Visio MS SQL Server SQL Azure Windows Azure Adobe Photoshop. Freelance -Application Development -Database Administration

    $38.89 /hr
    50 hours
    0.00
  2. Jared Sunshine

    Jared Sunshine

    Customer Care

    United States - Last active: 1 day ago

    I have a background in customer service and Information Technology. I am currently a full-time student studying Special Needs Education. I have a strong background in technology. I am able to develop and launch websites and I am quite versed in Web Technology. My past experience has included customer service. I am able to work closely with clients. I have been able to work identifying issues and worked to resolve them. I enjoy working on projects and seeing them to completion. I have managed projects successfully putting together a plan and accurate time-management.

    $13.33 /hr
    502 hours
    0.00
  3. Dusan K.

    Dusan K.

    Customer Service & Support|Data Entry|

    Serbia - Last active: 3 days ago - Tests: 6 - Portfolio: 2

    I finished "Singidunum" University in Belgrade, Serbia. There I studied fast typing, marketing, trade, monetary policy, accounting, commerce etc. Gained experience on email and over phone support while working for Amazon, as Seller Support agent for UK marketplace. Furthermore, I worked for The Body Shop UK, USA and Canada as Customer Care Representative. I also have good experience in the following areas: Microsoft Office, SAP, JIRA, CyberSource, Customer Service Central, Customer Support, Seller Central, Seller Support (phone and email).

    $5.00 /hr
    806 hours
    0.00
  4. Ivica A.

    Ivica A.

    IT professional

    Serbia - Last active: 17 days ago - Tests: 1

    A skilled IT professional - working for 10+ years as a technical support representative for companies with more than 10k active clients including the following duties: technical problem solving, development - programming, general and IT- tasks, IT-administration. It means advanced problem solving, troubleshooting and resolving customer queries together with ability to work independently in a home office environment. I have experience in the following areas: PHP, MySQL, Windows/Linux environment, Linux Server Administration, Web Hosting Technologies, Game Development, Software Development, Customer Service and Technical Support.

    $11.11 /hr
    0 hours
    0.00
  5. Max Topal

    Max Topal

    VoIP/Network/Linux Engineer

    Russia - Last active: 1 month ago - Tests: 3

    Over 8 years hands-on experience. I have deep knowledge on VoIP Hardware and softswitches from open-source one (Asterisk, Elastix, Askozia, Freepbx, CallBox, Trixbox, Welltime, Yeastar) to licensed (Switchvox, Panasonic, Mera, RTU) . I am providing Asterisk-based PBX installation\integration, support, troubleshooting and consultations. Fully manage the installation, configuration and troubleshooting of Linux servers * Install and configure Web Servers and MySQL, PostgreSQL * Install and configure customer scripts and programs * Monitor performance to identify and resolve issues using a suite of systems and tools. * Provide VoIP Security * Troubleshoot and resolve network, system, hardware and software problems. * Achieve quick fixes and / or long-term solutions as needed. I have more than 100 successful IP-PBX server deployments, so I am confident that you will be satisfied with my work completely.

    $20.00 /hr
    0 hours
    0.00
  6. Yogesh Sharma

    Yogesh Sharma

    Active Directory and Exchange consultant

    India - Last active: 24 days ago - Tests: 3 - Portfolio: 1

    A Highly motivated and result-oriented individual with over 8 years of experience in a professional environment having a great work culture and meticulous attention to detail with emphasis to customer satisfaction. Ability to achieve set targets and goals in a timely manner. Microsoft Certified System Engineer in Windows Server 2003 with Exchange and Technology Specialist in Windows Server 2008. Extensive hands-on experience in configuring, monitoring, upgrading, migrating and maintaining systems running Microsoft Exchange Server suite (2003 to 2013). Extensive hands-on experience in configuring, monitoring, upgrading, migrating and maintaining systems running Microsoft Active Directory Services(2003, 2008). Extensive hands-on experience in configuring, monitoring, and maintaining systems running Microsoft Cluster Services. Extensive hands-on experience in configuring, monitoring, upgrading, migrating and maintaining systems running Microsoft SharePoint Services(MOSS 2007). Troubleshooting Windows Server related issues(AD, DFS, IIS, DHCP, DNS, and WSUS) Projects, Installations, Configurations and Migrations etc. Configuring and troubleshooting on Mailbox, CAS, and Hub and Edge server roles installations. Configuring High availability solutions like Local Continuous Replication/Cluster Continuous Replication/Standby Continuous Replication technologies. Troubleshooting on Mailbox Migration, Public Folder replication, Database Inconsistency, Exchange services, Offline Address Book, Recovery Storage Groups. Implementing Disaster Recovery in exchange servers for recovering exchange information. Configuration and Troubleshooting External Mail flow (Inbound/Outbound), Mail flow between servers, Spam issues, Edge Synchronization. Configuring Anti spam/Transport agents, Application Relay, SMTP/Transport service problems. Analyzing and evaluating issues using various tools and utilities like EXBPA, EXTRA, ExMon, PFDAVAdmin, Exmerge, DCDIAG, NetDiag, NLtest, telnet, Replmon, AD modify, ADMT, MFCMAPI, etc. Installation, Configuration & Monitoring of Trend Micro Internet Messaging Security Suits & Symantec Endpoint Security. Basic Hygiene & Server hardening of all Windows OS, Linux OS & Subsystems likes IIS, ADS, and SQL Server etc. Security Health Check of all Windows & Linux OS. Ensure documentation of all activities & procedures adhering to organization standards

    $12.00 /hr
    2 hours
    0.00
  7. Oleg Boytsev

    Oleg Boytsev

    Information Security Engineer/Malware Analyst/Reverse Engineer

    Belarus - Last active: 14 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
    0 hours
    0.00
  8. JAlex Soft

    JAlex Soft

    Sidorov Aleksey

    Russia - Last active: 1 month ago - Tests: 2 - Portfolio: 1

    I'm a "general purpose" java developer with some experience in enterprise development (are my responsibilities at my previous job). I always try to develop software that suits customers (both functionality/deadlines) and is easy to maintain later, based on modern technologies(frameworks/libraries): apache-commons, google-guava, EE, Spring, Velocity, PDFBox, Thymeleaf and others where they really help. The result, unless otherwise specified, will be shipped as executables/ready-to-use binaries and sources files. Thank you!

    $18.00 /hr
    0 hours
    0.00
  9. Mikhail Urbanovich

    Mikhail Urbanovich

    QA, Performance testing

    Belarus - Last active: 5 days ago - Tests: 1

    Expert in Performance testing using LoadRunner, JMeter, Visual Studio, SilkPerformer. Good understanding of software performance issues. Experience working in Windows and UNIX Environment. Analyze the CPU Utilization, Memory usage, Garbage Collection and DB connections to verify the performance of the applications. Good knowledge in developing of performance test model. Huge experience in functional testing of standalone, web-based and mobile apps. Testing of localization and internationalization. Deep knowledge in penetration testing of bank’s environment and complex server-side applications. Ability to take part in multiple complex technical projects and coordinate with technical and non-technical teams. Develop of test documentation(Test cases, Acceptance sheets, Quality reports). Superior analytical and technical skills. Excellent communication skills.

    $27.78 /hr
    0 hours
    0.00
  10. 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
    0 hours
    0.00