DBA - Database Administrators & Developers

Showing 38,250 freelancers

DBA - Database Administrators & Developers

Showing 38,250 freelancers

  • Microsoft Access Database Developer, VBA Expert

    I am an Expert in Planning, Designing & Building Access Database I am a VBA Specialist. Since last 12 years I am building Microsoft Access Database starting from the version 97 till 2013. I have a good number of experience in … more

    I am an Expert in Planning, Designing & Building Access Database I am a VBA Specialist. Since last 12 years I am building Microsoft Access Database starting from the version 97 till 2013. I have a good number of experience in developing Microsoft Access Database with the followings: 1. Very user friendly, nice looking Dashboard, Data Entry Forms, Overall GUI and Reports 2. Split database for Multi user to install the database in a shared network and work together in the shared network. 3. Implementing VBA module to Integrate MS Excel, MS Word & MS outlook features over the MS Access Database. 4. Creating Excel Workbook with the calculated data taking from MS Access table / query. 5. With the calculated data taking from MS Access table / query emailing (HTML format) via outlook. 6. Synchronizing contact between MS Access Database and Outlook. I have a good number of experience in building MS Access Database from scrap and even from an idea. Thanks for your patient reading. Kind Regards  less

    microsoft-access microsoft-visual-basic microsoft-excel mysql database-programming database-administration php adobe-photoshop adobe-dreamweaver 00 more less
    • $20.00 HOURLY RATE
    • 4.9
    • 1174 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 19 PORTFOLIO ITEMS
    • 5 TESTS
  • Linux Admin / Freelaner SystemAdmin /AWS Ec2/ Nginx /WordPress/Magento

    I have been Server Admin and Web Developer for over 10 years, I worked with many top-rated websites all over the world. I am expert with LEMP and LAMP system, very good at speeding up servers and sites. For some … more

    I have been Server Admin and Web Developer for over 10 years, I worked with many top-rated websites all over the world. I am expert with LEMP and LAMP system, very good at speeding up servers and sites. For some personal reasons, I MOVED back to Vietnam. I am also working at Elance and Freelancer. If you need references, please don't hesitate to contact me. http://vincosolution.com/ My Blog: http://blog.vincosolution.com/ My Linkedin: https://www.linkedin.com/profile/view?id=204192625 Security Portfolio: http://goo.gl/75iNSS http://sangte.blogspot.com/ Hall of Fame: https://www.apachefriends.org/about.html I am very experienced with * Linux maintaince/troubleshooting (RHEL, Centos, Debian, Ubuntu, FreeBSD, gentoo, Mac OS X Server), * Virtualization: (Vmware Esxi 5.x, Openvz, Virtuozzo, Xen, KVM, vserver), * Cloud hosting (Amazon EC2, AWS, S3, RDS, simple Cache), * Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies, tcpdump), * Web servers (apache, nginx, lighttpd, tomcat, ssl installation and troubleshooting), * Caching ( apc/xcache/memcached/varnish/nginx) * Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot), * Bulk marketing (Dkim, spf, high speed/inboxing, interspire), * Automation (puppet, perl/shell/awk scripting), * Monitoring (nagios, zabbix, munin), * Hosting Ccontrol Panels (Cpanel/WHM, Plesk, Directadmin, ISPconfig..). * Mobile Application (Android / iOS / Windows Phone)  less

    linux-system-administration database-administration amazon-ec2 rackspace-cloudservers nginx varnish-cache memcached apache-administration mail-server-implementation network-administration openvpn subversion iptables whm cpanel plesk postfix exim ubuntu centos fedora squid bash security dhcp mysql virtualization amazon-web-services amazon-s3 unix-shell wordpress magento joomla 00 more less
    • $38.89 HOURLY RATE
    • 4.8
    • 1625 HOURS
    • VIETNAM
    • LAST ACTIVE
    • 8 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
  • VoIP/Linux Administrator

    I always love to learn new technologies and try my best to accomplish new and challenging tasks. 1. Complete IP PBX from scratch (Asterisk and freepbx) 2. Elastix (call center, fax server) 3. PIAF (With all Nerd Vittels scripts and … more

    I always love to learn new technologies and try my best to accomplish new and challenging tasks. 1. Complete IP PBX from scratch (Asterisk and freepbx) 2. Elastix (call center, fax server) 3. PIAF (With all Nerd Vittels scripts and tricks) 4. Trixbox and Freepbx Distro 5. Call center applications (Goautodial, Vicidial, Elastix) 6. Broadcast and AutoDialer(Goautodial) 7. VoIP calling card, pinless calling, wholesale, DID reselling (A2billing) 8. CRM with VoIP integration (Vtiger, SugarCRM, SuiteCRM) 9. Security of Servers and VoIP (Firewalls, Monitoring, Aleting) 10. VoIP security (Application security, Brute force attacks prevention, Fail2ban) 11. Monitoring of Servers and services (Nagios, Opsview) 12. High Availability and Failover (Heartbeat, DRDB, Pacemaker, Corosync) 13. Auto Proviosioning of IP Phones (Multiple vendors) 14. Asterisk custom dialplan 15. Fax server (Hylafax, Avantfax) 16. CDR statistics, Centralize CDR server for multiple Asterisk servers. 17. Missed call notifications, Queues reporting for Asterisk 18. Asterisk Operator Panels (Isymphony, FOP2) 19. VPN (OpenVPN, IPsec, PPTP with firewall security) 20. IVR (Database Backends) 21. Asterisk Integration with Digital PBXs i.e. Avaya, Nortel(sip trunking and PRI trunking) 22. GSM gateways with Asterisk (Openvox, GoIP, Dinstar, Quescom) 23. Networks (Switching, Routing, Security, Monitoring, Alerting, Optimization) 24. Firewalls (Pfsense, UTM, IPTables) I have practically experience of all the above mentioned products and technologies and I completed many custom projects using these. I am not limited to only these technologies, I always welcome to know new technologies and environments. I am always ready for a test job to prove my skills :-).  less

    asterisk trixbox freepbx cisco-routers vpn 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 150 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
  • Sr Linux / Amazon EC2 / Migrations / Nginx / Security / DevOps

    A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High performance, Hardening Servers … more

    A self-motivated System and Network security administrator with more than 10 years in the management and analysis of Linux/Unix enterprise Servers (60- 70 servers). With deep and advance knowledge of highly scalable servers, Cloud Computing, High performance, Hardening Servers, Migrations, Ethical hacking, Development Operations - DevOps, Open Source services and Server optimization. Certifications such as: Certified Ethical Hacker - Red Hat Certified Engineer - Cisco CCNA. Expertise in: MIGRATIONS: AMAZON/Wordpress/Magento/LAMP/Cpanel migration plans and implementation, backup-restore and recovery plans. I have helped dozens of clients migrate their web sites and applications into the CLOUD VPC. Design and build Web Servers with HIGH PERFORMANCE (LAMP, NGINX/python, Nginx/Varnish, Nginx/php-fpm, Jboss, Apache tomcat and Varnish) - Improve and Fix performance issues, service optimization, security issues and deployments. MALWARE removal and analysis: WordPress / Magento / Joomla Malware removal and remediation, Incident handling and Forensics analysis. BOOST and optimize websites with: NGINX, Varnish, REDIS, Amazon S3, Memcached, APC, apache tunning and mysql tunning, Amazon CloudFront and more. Amazon Cloud Computing (AWS) - AMAZON EC2, amazon CDN S3, amazon RDS, amazon ELB, Amazon AutoScaling, Amazon VPC, CloudFront, Route53, etc. Also Management of multiple Control panels like Rackspace Cloud Computing, SoftLayer, GoDaddy, HostGator, dreamhost and MediaTemple. DevOps and Continuous integration: Docker + vagrant, Vagrant + Puppet, Puppet + Git, Docker + Ansible. Continuous integration with Jenkins, travisCI, distelli and more... Designing and deploying scalable & Highly available systems such as: Amazon Load Balancing (ELB), Hearbeat, HAProxy, mysql cluster, apache cluster... Network and web security such as: Vulnerability Assessments, Hardening servers, security audits, Penetration testing, Virus/Malware/Threats/Vulnerabilities countermeasures, web security, fail2ban, Tripwire-AIDE-OSSEC, mod_security, mod_evasive, Denial of Services (DDOS) countermeasures, Firewalls (iptables, CSF and apf), etc. VPS: Cpanel / WHM / Plesk / DirectAdmin / Webadmin - Migrations, management, hardening, configuration, maintenance and high level of Administration. Databases Administration such as: Mysql tweaking and tunning, MongoDB, load balancing and Mysql replication (Master & Slave) for High traffic. Database: Mysql tweaking and tunning, MongoDB, ElasticSearch, Apache Solr, Sphinx, lucene, MariaDB, Postgresql replication & Pgpool, Mysql load balancing and Mysql replication (Master & Slave) for High traffic. Networking: TCP/IP high expertise, NAT, FIREWALLS, CISCO routing and switching and Packet analysis with tcpdump and wireshark. Storage solutions and Directory management: SAMBA, NFS, FTP and sftp. LVM and RAID*. SCRIPTING: Bash and python. Proficient with MAIL Servers: postfix, sendmail and Zimbra. Source control versioning: GIT and SVN. Deploying and maintaining Monitoring systems such as: nagios, ZAbbix, cacti and Jboss Operation Network (JON). Backups solutions: amanda, rsync, Amazon backups and rsnapshot. Research & development (R & D) for any open source service and technology.  less

    network-security amazon-ec2 nginx linux-system-administration penetration-testing apache-administration ubuntu virtualization samba security bash mysql amazon-rds amazon-web-services nagios rackspace-cloudservers clustering iptables centos git apache-tomcat unix-system-administration varnish-cache django-framework 00 more less
    • $24.99 HOURLY RATE
    • 4.9
    • 7137 HOURS
    • MEXICO
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 4 TESTS
  • Juniper / Cisco / Exchange / VMware Expert

    I specialize in Juniper, Cisco, Exchange, Windows Server and VMware technologies. Here are the lists of products that I have worked with: - Juniper - SRX, SSG, M, Netscreen, J, MX, EX, QFX, etc. series. Cisco - 2960, 3650, 3750x, 3850, 881, 1921 … more

    I specialize in Juniper, Cisco, Exchange, Windows Server and VMware technologies. Here are the lists of products that I have worked with: - Juniper - SRX, SSG, M, Netscreen, J, MX, EX, QFX, etc. series. Cisco - 2960, 3650, 3750x, 3850, 881, 1921, 2811, 2911, ASA, etc. series. Microsoft - Windows Server 2008/2012, Exchange 2007/2010/2013, Office 365, etc. VMware: - VMware vSphere, VMware Horizon View, vCloud Director, etc. LinkedIn: http://np.linkedin.com/in/bipingiri Blog: http://www.mustbegeek.com/ Skills: Juniper/Cisco:- RIP, OSPF, BGP, MPLS, COS, QoS, VLANs, STP, RSTP, MSTP, VTP, HSRP, GLBP, VRRP, VC, VPN, IPSec, IPS, IDS, Anti-Virus, Anti-Span, Syslog, SNMP, NetFlow, jFlow, sFlow, NAT, IPv4, IPv6, etc. Microsoft:- AD DS, AD CS, AD FS, AD RMS, DNS, DHCP, RRAS, Hyper V, Failover Cluster, NLB, RDP, DAG, PowerShell, IIS, VPN, IPSec, SSL VPN, FTP, Group Policy, Licensing, etc. I have experience and expert knowledge of various Microsoft technologies like Windows Server 2003/2008/2013, Exchange 2007/2010/2013, Database 2008/2012, Hyper V, PowerShell. Likewise, I have deployed virtualization infrastructure with VMware's VMware vSphere and Microsoft's Hyper-V solutions. Education High School = Computer Programming Specialization Bachelors Degree = Bsc in Computer Networking and IT Security >>>>Vendor Certifications<<<< Juniper * Juniper Networks Certified Internet Associate (JNCIA) * Juniper Networks Certified Specialist Security (JNCIS-SEC) * Juniper Networks Certified Professional Security (JNCIP-SEC) * Juniper Networks Certified Internet Specialist (JNCIS-ENT) Cisco * Cisco Certified Network Associate (CCNA) * Cisco Certified Network Associate Security (CCNA Security) Microsoft * Microsoft Certified Solutions Expert (MCSE: Exchange 2013) * Microsoft Certified Solutions Associate (MCSA: Server 2008, Server 2012) * Microsoft Certified IT Professional (MCITP: Server 2008) * Microsoft Certified Systems Engineer (MCSE: Server 2003)  less

    juniper-routers jncia-junos cisco-routers cisco-asa cisco-ios microsoft-exchange-server microsoft-hyper-v-server vmware-administration vmware-esx virtualization 00 more less
    • $45.00 HOURLY RATE
    • 5.0
    • 806 HOURS
    • NEPAL
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 7 TESTS
    GROUPS:
  • Sr Windows and Linux Systems Admininstrator \ AWS(EC2) Administrator

    I'm self-motivated, autonomous engineer with over 11 years of experience in Linux(Unix) and Windows systems administration. I perform each project to the fullest of my capabilities and with the dedication that is expected from a professional as myself … more

    I'm self-motivated, autonomous engineer with over 11 years of experience in Linux(Unix) and Windows systems administration. I perform each project to the fullest of my capabilities and with the dedication that is expected from a professional as myself. In short I've great experience with: - OS deployment, configuration and troubleshooting: CentOS, Ubuntu, Debian, FreeBSD, Windows Server 2003 - 2012R2 - Hosting engines: WHM (cPanel), ISPmanager, Plesk, DirectAdmin, Kloxo,Zpanel - AWS (RDS, EC2, SES, S3, CloudFront, VPC, Route53, RedShift, Elastic Beanstalk etc.) - Server and client apps: WEB (Apache, IIS, Nginx, Varnish, APC, PHP etc), SQL (MySQL, MSSQL administration), FTP (ProFTP, PureFTP, IIS etc.), Mail (Postfix, Zimbra, Dovecot, Zimbra, MS Exchange 2007-2013 etc.). - Deep knowladge in Virtualization: Xen, OpenVZ, KVM, VMware, Hyper-V, Docker. Other skills: Atlassian JIRA\Confluence deployment and troubleshooting. I'm good at server migration, installation and configuration,t troubleshooting and security. Also I'm able to provide on-going support services. Each problem that I solved became a rule which served afterwards to solve other problems. My job it's my rest.  less

    linux-system-administration windows-administration network-administration database-administration cpanel plesk amazon-web-services domain-migration network-security virtualization 00 more less
    • $28.89 HOURLY RATE
    • 5.0
    • 1370 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
    GROUPS:
  • JEE Architect - Developer / ExtJS Developer

    Highly skilled systems architect and developer with more than 25 years of experience designing, developing and deploying applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO: ✔ Strong knowledge of … more

    Highly skilled systems architect and developer with more than 25 years of experience designing, developing and deploying applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO: ✔ Strong knowledge of Java SE and JEE stacks, from early versions 1.x up to latest version SE 7 and JEE 6. ✔ Deep understanding of old technologies such Cobol, ISAM, flat files, pipes, “green screen”, etc. This knowledge allowed me to design, code and implement integrations between new applications with legacy ones. ✔ Solid leading and mentoring skills to help and encourage individuals to maximize their productivity by applying the best practices, frameworks, libraries and technology in general. ✔ I'm always learning about new technologies and tools to ease and reduce time spent in application development and deployment. Technology by itself is worth nothing if it does not solve real world problems.  less

    java j2ee extjs oracle-plsql ibm-db2 glassfish sencha delphi cobol microsoft-entity-framework 00 more less
    • $45.00 HOURLY RATE
    • 5.0
    • 535 HOURS
    • GUATEMALA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 5 TESTS
    GROUPS:
  • joomla/Wordpress/AJAX/jQuery/JavaScript/My SQL

    My extreme priority is to fulfill the needs of my customers in the best way possible. knowledge on the technology and how to develop software is only the first step. understanding the business and functional requirement is what makes having … more

    My extreme priority is to fulfill the needs of my customers in the best way possible. knowledge on the technology and how to develop software is only the first step. understanding the business and functional requirement is what makes having those skills worthwhile. The quality needs to be conventional and extremely reliable ,to achieve that i believe dedication ,honesty is as important as having the expertise on the subject matter. I have experience in the following areas: Joomla,php5, code-igniter, CSS,OOP , Wordpress,Html5 and software design and testing.  less

    • $11.11 HOURLY RATE
    • 5.0
    • 1494 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 6 TESTS
  • Web Developer .NET stack with extensive database design experience.

    I have 4 years of software development experience creating web applications mainly based on the .NET stack (MVC). I create complete solutions based on a variety of back ends including SQL server, MySQL, Access, complete with reporting capabilities. I have … more

    I have 4 years of software development experience creating web applications mainly based on the .NET stack (MVC). I create complete solutions based on a variety of back ends including SQL server, MySQL, Access, complete with reporting capabilities. I have worked on several large scale projects for academic institutions for student enrollment, management and administration, which included migrating, combining and integrating several legacy databases without downtime, and creating extensive reporting capabilities.  less

    asp.net-mvc sql .net-framework ado.net 00 more less
    • $15.00 HOURLY RATE
    • 5.0
    • 674 HOURS
    • MACEDONIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
  • Senior .NET Web Developer / SQL Server

    Most of my work history and tens of 5.0 (only) reviews are on https://www.freelancer.com/u/YStanislav.html. My primary development skills (10+ years): Full SDLC of web apps using .NET and web stack. - Software design. I … more

    Most of my work history and tens of 5.0 (only) reviews are on https://www.freelancer.com/u/YStanislav.html. My primary development skills (10+ years): Full SDLC of web apps using .NET and web stack. - Software design. I mostly prefer fundamental principles as SOLID, DRY, KISS than thinking in design patterns (most of them already becomes anti-patterns). - .NET platform and C#. From deep internals (MSIL, how heap is organized, how JIT is working, etc.) to most of high-level tools (XML.NET, ADO.NET .NET Cryptography, ...). - ASP.NET (WebForms, MVC, SignalR, etc.). - Web stack (HTML/JS/CSS, XML/XSLT/XPath) and related frameworks (jQuery, Angular, Knockout). Responsive design. - Microsoft SQL Server. From designing complex data structures to deep tuning (page-level analysis, execution plans reading and proper interpreting, wait statistics processing, etc.). - Important tools for SDLC and quality - IoC (Autofac), testing (NUnit, Selenium WebDriver), continuous delivery (TeamCity). My primary "getting things done" skills: I am hardened with 10+ years of freelance experience and my three kids. So I know, how to find time, how to find motivation, how to work with 10 project simultaneously, how to work under pressure, what might happens when quality is low, etc. In addition, I have tons of secondary skills (2-3 projects experience). The list of databases only: PostgreSQL, MongoDB, Redis, MySQL, SQL CE, SQLite. I can invest my time in interesting projects for free.  less

    c# database-design microsoft-sql-server-development asp.net-mvc asp.net t-sql javascript html css 00 more less
    • $38.89 HOURLY RATE
    • 5.0
    • 132 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
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