SQL Database Administrators & Developers

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Hire a freelance SQL developer to add interactive functionality and flexibility to your database. Search our database of SQL consultants to get your project started today.

SQL (Structured Query Language) is a database computer language designed for accessing and manipulating databases in relational database management systems. On Upwork, the world’s largest online workplace, companies hire SQL developers to successfully complete jobs including providing support, troubleshooting and setting up/ managing databases.

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SQL Job Cost Overview

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

Upwork SQL Jobs Completed Quarterly

On average, 435 SQL projects are completed every quarter on Upwork.

435

Time to Complete Upwork SQL Jobs

Time needed to complete a SQL project on Upwork.

Average SQL Freelancer Feedback Score

SQL Upwork freelancers typically receive a client rating of 4.66.

4.66
Last updated: June 1, 2015
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  1. Azwaan A.

    Azwaan A. Agency Contractor

    Senior Developer/Solution Architect (C#, .NET, MVC, AZURE, SQL)

    Sri Lanka - Last active: 20 days ago - Tests: 7 - Portfolio: 9

    An Accomplished Software architect, consultant and Lead Developer, with in-depth expertise on Desktop, Web, Cloud and Enterprise applications on the .NET platform as well as strong ETL and Business intelligence expertise on the SQL Platform. Highlights 13 yrs of experience in the Industry. More than 20,000 Hrs of development work. more than a Dozen certifications (MCPD, MCITP, MCTS) on various .NET and SQL Server related technologies. I write clean code, Follow SOLID principles in development, designed to to develop manageable, extensible and reusable systems Co-Founded a US Based startup Available to work on US EST work hrs Expertise on requirements analysis , estimation to Architecting solutions and leading teams on complex development projects to review and performance tune existing applications. In-depth knowledge and familiarity of developing applications for a number of industry domains such as Financial services, Energy, Lead Processing, Automobile, Telecom billing, Consumer goods and Manufacturing. Extensive experience in enterprise software development life-cycle. Agile and Scrum/XP Methodologies in managing project teams. Key Achievements Architected, Managed and led development effort to build a complete eco-system for automobile lead processing, lead delivery, inventory management and digital advertising. Founded a Microsoft technology consulting and outsourced product development firm, leading its product delivery team and delivered multiple solutions in different industry verticals. Led improvements to existing development processes using best practices, guidelines and process re-engineering on multiple engagements. Multiple successful consulting and delivery engagements turning around troubled existing systems into revenue generating applications that can be scaled to meet customer demand. Was part of team that built the world’s first Online AGM solution. Web Technologies ASP.NET MVC (2.0 to 5.0), ASP.NET Forms, HTML5/CSS3, WCF Web Services , .NET 2.0 Web Services, SOAP/JSON/AJAX/REST, JQuery, ODATA, Knockout JS Windows Applications Windows Forms, WPF, Silverlight Frameworks .NET Framework (2.0 to 4.5), Telerik Kendo UI, Windows Azure (Cloud), Amazon SDK Software Design/Architecture Patterns GRASP, GOF, MVC, MVP, SOLID, DRY, KISS, YAGNI, Domain Driven Design(DDD), CQRS Databases/Database Technologies SQL Server (2005 – 2012), SQL Integration Services, SQL Reporting Services, Geo-Spatial Data, MongoDB, LINQ, Entity Framework, SQL Azure Middleware MSMQ, Windows Workflow Foundation, NServiceBus, SQL Service Broker Development Process Methodologies Agile, Scrum/XP, Prince 2, TDD, DDD , BDD, Continous Integration (CI) Tools Jetbrains Teamcity, 3Scale API, JetBrains DotTrace, YSlow Payment Technologies PayPal, Chase Payment Tech, Speedly, BrainTree, PayPros

    Associated with: Inexis Consulting

    $33.33 /hr
    2,785 hours
    4.92
  2. Oleg M.

    Oleg M.

    Manager/Architect/Developer, Java, SQL, JavaScript, HTML, CSS

    Russia - Last active: 12/23/2014 - Tests: 1 - Portfolio: 13

    Development of web and client-server applications using object oriented and aspect oriented technologies. I would like to work in the following areas: * Web Development of E-Business / Database Applications * Software Engineering Experience Summary: 8+ years experience in the information technology industry with expertise in architecture, analysis, design and development. • Java (J2EE, Spring, Hibernate, JSP, JSF, JSTL), PHP • SQL, MsSql (T-SQL), MySQL, PostgreSQL, Oracle10 • JavaScript (Ext-JS, JQuery, Prototype, Mojo), CSS, HTML, DHTML • XML, XSLT, XPath, XStream • Web Services, wsdl • JReport, IReport • Maven, Ant, JUnit • Tomcat, JBoss • IntellJ, Eclipse • Shell Programming • Window 98/2000/XP/Vista/Seven, Red Hat Linux, Debian, Ubuntu, CentOS. I have the ability to manage projects, ability to work within tight deadlines, ability to work with new technologies and ability to fast learn, team player.

    $33.33 /hr
    5,987 hours
    5.00
  3. Mike De La Loza

    Mike De La Loza

    Rails/Ruby/Python/C++/SQL/Ajax/Javascript/Backbone.js/CSS

    United States - Last active: 1 day ago - Tests: 4 - Portfolio: 11

    Since deciding to work alone in 2010, I have never abandoned a client. I don't give estimates nor abide by deadlines. My development machine has 32GB of RAM, a 500GB SSD hard drive, two 23-inch monitors, and a Logitech webcam.

    $70.00 /hr
    5,091 hours
    4.83
  4. Jorge raul S.

    Jorge raul S. Agency Contractor

    Senior Programmer Visual Basic,VBA,Excel,Access,SQL,Essbase,Mainframe

    Argentina - Last active: 1 day ago - Tests: 2 - Portfolio: 12

    My Degree: More than 15 years of experience working for 1st level enterprises. My Speciality: Solve problems. My Proof: See my oDesk work history and feedback

    Groups: Yahoo Web Hosting Designer

    Associated with: Hipnotika Agency

    $38.89 /hr
    8,926 hours
    5.00
  5. Jonathan Duncan

    Jonathan Duncan

    C#,VB,WPF,ASP,MVC,WebAPI,HTML5,Bootstrap,Javascript,Angular,SQL,SSRS

    Canada - Last active: 6 days ago - Tests: 7 - Portfolio: 6

    25+ years of programming, 14+ years as a job. It's not just how I make a living, it's also something I really love and enjoy doing. I develop robust desktop software, great responsive websites, optimize databases and create reports. I communicate well and feel that it is my duty to let the client know how things are progressing. I also give constructive input but respect the client's final decisions. I program desktop programs in C# and VB.Net (both WinForms and WPF) and websites as either ASP.Net, MVC 5 or single page Angular applications. I have worked heavily with MS Access and MS SQL. I have extensive experience writing reports for SQL Server Reporting Services(SSRS) and RDLC reports for web and desktop applications. Here are a few aspects of the challenging projects I have worked on so far. Added eyedropper functionality (pick a color from an image) using HTML5 Canvas and listed fonts installed on the computer to a single page SVG graphic editing web app. Created custom mouse cursor. Runs on Chrome, Firefox, Safari, Opera and Internet Explorer. Created response Bootstrap WebAPI/Angular site to teach Latin. Created an MVC 5 demo website for travel agents to create and manage quotes. Wrote a program to play music on a low-latency and high fidelity 8 output channel professional sound card. Created an output program for industrial displays. Wrote a program that receives industrial protocol messages over TCP/IP and follows with the appropriate action. Read and nicely write INI files. Created solid user registration and product activation for desktop applications. Created graphic editor with easy user interface for complex set of symbols. Advanced document layout for specialized graphics. From a third party website, retrieve the distance between two locations for use in calculations. Load GoogleMaps map in desktop application with route between source and destination addresses. Created an ASP website to edit database. Created custom JqueryUI controls to validate and display the data in a user friendly way. Make websites with HTML5, javascript, and JQuery. Created and optimized MS SQL databases. Displayed time from events in database in the user's time zone. Optimized, rotated and created arrays of 3D data. Created fast working implementation of a query to find areas of similar data throughout millions of records for MS SQL. Made reports (SSRS) with automatic emailing to the clients. Made a RDLC report for a desktop application based on MS SQL. Implemented a full costing program in MSAccess. I also speak, read and write English, French and Spanish fluently.

    $40.00 /hr
    3,609 hours
    4.75
  6. Max P.

    Max P.

    PHP/SQL/JavaScript developer

    Russia - Last active: 23 days ago - Tests: 23 - Portfolio: 8

    I'm professional web-developer with 12 years experience. I have developed a wide range of websites as a member of team and individually. Among developed websites were highload portals with millions daily visitors and sites for small businesses. I finished Computer Science at Moscow State Technical University n.a. N.E. Bauman, Russia. Skills: - PHP, Zend Framework, Silex, Yii - SQL, MySQL, PostgreSQL, Sphinx - HTML, DHTML, CSS, Bootstrap - JavaScript, jQuery, D3.js - Linux, Windows, Zabbix - Apache, Nginx - SVN, GIT - Selenium - Photoshop

    $27.78 /hr
    1,393 hours
    4.98
  7. Sergiy K.

    Sergiy K.

    C++/SQL/Delphi Developer

    Ukraine - Last active: 3 months ago - Tests: 3

    I am coding more than 19 years now. Mostly with Delphi and databases (MS SQL, Firebird/Interbase) on medium-sized to huge (~100 000 lines of code) projects. Second language I used extensively is C++. I love unit testing, as well as automating other software development aspects, i.e. automated builds etc. Also have some knowledge of: Java, JavaScript, HTML, Basic, Unix scripting. In any case, I'll appreciate if you contact me - everything is negotiable.

    Groups: Microsoft Certified Professionals

    $25.00 /hr
    1,773 hours
    5.00
  8. Serhiy H.

    Serhiy H.

    Drupal/PHP/SQL developer

    Ukraine - Last active: 4 days ago - Tests: 5 - Portfolio: 4

    About 6 years of experience with Drupal, Drupal module development, Drupal customization, Drupal maintenance, Drupal themes, and Drupal Optimization. Just do it ... on Drupal :)

    $25.00 /hr
    567 hours
    5.00
  9. Alexei B.

    Alexei B. Agency Contractor

    Microsoft SQL DBA

    Ukraine - Last active: 09/23/2014 - Tests: 2

    Over last 7 years, I have provided qualitative services in the fields of: - Functional, performance, configuration, documentation testing; - Database administration; - MS SQL query writing

    Associated with: ITServe

    $25.00 /hr
    83 hours
    5.00
  10. Nikhil K. Agency Contractor

    SQL / PLSQL Developer

    India - Last active: 3 months ago - Tests: 3

    Over 4 years of experience in analysis, design, development, implementation and testing of applications in data warehousing and client/server environment. Experience with Oracle SQL and PL/SQL programming and used Database utility programs like TOAD and SQL Developer. Experience in creation and effectively made use of Tables, Indexes, Table Partitioning, Collections, Analytical Functions, Views, Constraints, Materialized Views and Query Re-Write. Experience in creating the tables and sequences for the experimental data load capture. Loaded the data into the tables using TOAD, SQL Developer and SQL*plus. Involved in implementing table partitions using Range, Hash, Composite techniques. Experience in Oracle SQL and PL/SQL including all database objects: Stored procedures, Stored functions, Packages , TYPE Objects, Triggers, cursors, REF cursors, Parameterized cursors, Views, Materialized Views, PL/SQL collections. Experience in Tuning the application using Explain plan and SQL Trace to optimize the cost and for higher efficiency. Extensive Query Optimization and Performance Tuning. Created the integrity constraints and Database Trigger for the data validations. Experience in working a variety of Analytical Functions, RANK, DENSE RANK, LAG, LEAD, PARTITION OVER. Good knowledge on joins, which are inner join, Left outer join and Hash join, Semi join. Tuned several Oracle SQL statements using Explain Plan, Auto Trace utilities. Worked on external hints during the SQL optimization to fast up the SQL process. Proficiency on using various Oracle utility tools SQL Plus, TOAD, SQL Developer.

    Associated with: ON GRAPH TECHNOLOGIES PVT LTD

    $16.67 /hr
    547 hours
    5.00