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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, 369 SQL projects are completed every quarter on Upwork.

369

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 4.67.

4.67
Last updated: September 1, 2015
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  1. John Botibol

    John Botibol

    Experienced .Net Software Developer

    United Kingdom - Tests: 2 - Portfolio: 2

    I excel at taking a project, large or small from inception to completion. Recent work has leveraged C#, ASP.Net, MVC5, Web API 2, MS SQL Server and Xamarin iOS & Android for mobile clients. You can see information about my latest project at https://www.datapigeon.com. I have many years experience with SQL (mainly MSSQL) and am quoted in Joe Celko's book "SQL For Smarties" Ch 17.5. I have strong legacy skills with Visual Basic and Powerbuilder.

    $38.89 /hr
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  2. Deepika Peri

    Deepika Peri

    Senior .Net Developer

    United Kingdom - Tests: 2 - Portfolio: 3

    • 7+ years of strong experience in designing and implementing flexible solutions in .NET 4.0, WPF • 5+ years of experience in delivering projects on Agile Scrum in the roles of Scrum Master and Team • Extensive experience in delivering projects in SDLC mode including requirements gathering, design, coding, testing, debugging and maintenance. • Work Experience in the UK with British Petroleum and other UK & International clients such as Bank of America and Charles Schwab. • Articulate, confident and experienced communicator - Both written and oral • Creative, talented, versatile and competent; takes great pride in exceeding expectations and beating deadlines.

    $20.00 /hr
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  3. Shannon McKenzie

    Shannon McKenzie

    Full stack software developer

    United States - Tests: 1

    I am a Microsoft Certified full stack software developer. I am experienced in all phases of the software development life cycle from conception to retirement. I have proven ability as a project manager and as a project team member. I am able to quickly learn new technologies and use them to meet the needs of clients. I am a self-starter with excellent communication skills.

    $100.00 /hr
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  4. Romanchuk Vitaly

    Romanchuk Vitaly

    C# developer

    Ukraine - Tests: 1

    I write on C# about 2 years. I had some projects (for example stream video from web-cam to Wowza Media Server, find objects of specific form in image from microscope, sending screen-shots from clients to server for control process of study in school etc.), which were written for myself or for my friends/partners, but I'm looking for interesting projects to improve my knowledge and increase my level.

    $5.00 /hr
    0 hours
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  5. Nelson V.

    Nelson V.

    Kleio Technology

    United States

    • Over 10+ years of experience in Analysis, Design and Development and maintenance using .NET technologies. Started using C# from version 1.1 until the latest 4.0. • Experiences in all the phases of the Application Lifecycle Management (ALM) using Team Foundation Server as the Work Item Tracking (WIT) and Source Control System (SCS). • Developed and Implemented systems using Client/Server Architecture following the best practices using C# , ASP.NET, ADO.NET, Web Services , JavaScript hosted on IIS 5.5,6.0,7.0,7.5. • Experience in Windows Communication Foundation (WCF) and WPF .NET Framework 3.0, 3.5 and 4.0,4.5 • Extensive experience writing client application using .NET Technologies using three tier architecture either communicating with the data layer via Data Access Framework or through Services. • Clear understanding of the principles of Service Oriented Architecture (SOA) and exercised those skill in multiple projects following the principles such as separation or concern of Orchestration. • Strong Knowledge in developing application using Object Oriented Analysis and Design (OOD), Aspect Oriented Design (AOP). • Experience using Interface Development Environment such as Visual Studio 2005, 2008, 2010. • Extensive experience using SQL Server 2000, 2005,2008 in terms of writing stored Procedure, views, database normalization, database design, database performance improvement and maintenance. • Strong Experience implementing reports in SQL Server Reporting Services (SSRS) 2000, 2005 and 2008. • Experience implementing SQL Server Integration Services (SSIS) packages in 2005 and 2008, 2012. • Beginner skills using MySQL and PHP using XAMPP. • Extensive experience troubleshooting and debugging Windows Services, Web Applications, Windows Application, Web Services and WCF Services. • Experience using ASP.NET MVC 2, MV3, MVC4, MVC5 using all its features from security, routing following the Model View Controller patterns. • Experience JavaScript framework such as jQuery up to 1.7 • 2+years’ Experience using knockout framework. • Experience using Angularjs, Durandal, Requirejs • Experience using jQuery Mobile 1.0. • Experience implementing system using HTML 5. • Experience using Json and DOM Manipulation • Experience development mobile applications for Windows Mobile 5.0, 5.5, 6.0,6,1 and beginner skills writing iPhone applications. • Experience development mobile applications for Windows Phone 7.5, 8.0,8.1. • Experience writing installers using Install Shield 10.5 and 11. • Lead the Agile Adoption using Scrum as the framework to implement as a scrum master. • Used source control tools such as Team Foundation Server (TFS), SVN and StarTeam. • Experience using Operating System such as Windows XP, Windows 7, Windows 2003, Windows 2008, Windows Mobile 5.0, 6.0, 6.5, Mac OS Snow Leopard, Lion and Ubuntu. • Extensive skills deploying and configuring applications in IIS 5,5,6,0 and 7.0 • IOS 5.0, 6.0, 7.0 beginner skills and currently working on a mobile application. • Experience developing for Windows Azure

    $66.67 /hr
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  6. Denis Spiridonov

    Denis Spiridonov

    Experienced Android Developer at Livetex

    Russia

    I'm skilled and motivated Android developer with over 4 years of experience in building high quality mobile apps. My experiences range from building financial apps for banking industry to social apps. My skills: - Java, Android SDK, Google APIs Web and databases: - Java EE, Node.js JSON, XML, SQLite, MySQL, Redis, MongoDB Social: - Facebook, Twitter, Vkontakte Other: - Google Play submission, testing - Git, SVN, GitHub, bug trackers - UI/UX, Human Interface Guidelines

    $15.00 /hr
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  7. Vladimir Nizamutdinov

    Vladimir Nizamutdinov

    Java/C# developer

    Kazakhstan - Tests: 6

    Hello everyone, my name is Vladimir and I am Software Developer. I have master degree in Computer Systems and Software Engineering and currently working as C# developer. I have skills of Web Development (C #, Java, Groovy) and Desktop Development (C #). In the field of web development I mainly specialize in backend development, although I have some skills of frontend development. I do not have a deep knowledge in the field of databases, but have some skills to work with simple CRUD SQL queries. I have some knowledge in the field of image processing (OpenCV, EmguCV libraries, ImageJ) and soft computing (fuzzy logic, artificial neural networks). Favorite technologies: C#, Java, C/C++, Groovy, Transact-SQL, Hibernate, NHibernate, ZK Framework, OpenCV, EmguCV. Unloved technologies: Javascript, PHP, PL/SQL, Common Lisp, Pascal/Delphi.

    $5.56 /hr
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  8. Siarhei Rabau

    Siarhei Rabau

    Senior .NET Engineer

    Belarus

    I'm a senior C# developer with extensive experience in building high quality software. My experiences range from developing mobile applications for small business to building back-end for responsive high load websites for worldwide companies. I like working on projects with a team that cares about creating reliable and usable software. It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects. I'm flexible with my working hours and am happy to work closely with any existing freelancers you work with. I look forward to hearing from you!

    $22.22 /hr
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  9. Kimberly Roeder

    Kimberly Roeder

    Full-Stack Developer + UX Strategist

    United States

    From the MEAN Stack to Ruby on Rails, I am a full-stack web and user experience developer who loves to solve problems and create elegant solutions. With a M.S. in IT from the University of Tennessee with a Minor in Computational Science, I also have experience from a three-month web development immersive program at General Assembly. Presently working as a successful freelancer and a Ph.D. student at Stanford University. Prior to this role, I was Director of Communications and Digital Strategy at the University of Tennessee. I look forward to working with you!

    $40.00 /hr
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  10. Yevhen Anufriiev

    Yevhen Anufriiev

    Tech Team Lead

    Ukraine

    Data Warehousing Team Lead Highlights of my professional career include: - 12 years of experience in software development - Direct leadership of up to 6 person teams, including technical and personal development - Strong Experience in data modelling and developing for DW and OLTP on Oracle and IBM PureData (Netezza) for Banking and Retail. - Proven track record of successful project management - Hands on experience in Client Communication, end user training -------------- Led a number of successful development projects of a 48TB data warehouse for a major retailer. Applied and evolved an Agile SDLC for rapid, accurate delivery of client requirements Acted as Scrum Master on client calls, ensuring a smooth communication flow with the client Gained strong experience in Dimensional (Ralph Kimball) methodology. Designed Marketing subject area; contributed to evolution of Retail and Clickstream warehouse and mart models. Directly managed a team of up to 6 people. Coached and groomed a successor for myself. As a technical leader, performed a range of tasks from technical design to code reviews. Gained an expert understanding of Netezza platform, achieved a Developer certification. Devised and executed training classes on MPP query optimization, other best practices. Designed and developed an ETL flow around IBM DataStage, decreasing update cycle by 40%. Designed and oversaw development of a regression test environment for the DW implementation, enabling a successful iterative delivery model. Organized and delivered client-facing multiple training session ----- Successfully worked with clients from top of 20 Ukrainian Banks several projects resulted in the brand new products in Banking Acted on different positions in projects: Investigated business flow and collected requirements as a business analyst. Created requirement specification and decomposed requirement specification into tasks for developers. Planned projects and oversaw Led team to successful product delivery to clients Acted as experienced Oracle PLSQL and Delphi developer Successfully supported clients remotely and on-site. Long and short term onsite works for application maintaining, end users training and support. Gained experience of working on different positions in Bank. Modeled data for Banking, implemented design and business logic. Designed database structure, created database objects and wrote of server-side PLSQL-code and SQL-queries for OLTP systems on Oracle Databases. Successfully solved performance problems by query performance analyzing and optimization. Developed front-end parts using Delphi 7 Successfully designed architecture of GL-data (General Ledger data) migration engine from one bank branch into another and implemented it in PLSQL. This let to optimize clients business and increase revenue by collecting separated GL-data into one database. It was used by more than 10 clients to rollup branch network or to transfer data for analytics into DWH Led development of “Client Service Wizard” subsystem. Its purpose was to optimize and speed-up client service in banks. It was used by more than 5 clients(banks with branch network) “Exchange Monitor” application – automated data input\output in different formats into\out of ABS (Automated Banking System). It used more than 20 clients for loading data in and unloading data out of the database. Specific testing framework for testing PLSQL core of the financial statements (reports) of the Bank. These reports were highly important and were sent to National Bank on daily bases. Failure in report results in fines and penalties. Developed custom process on PLSQL and Java to transfer and load data from several branches into Data Warehouse built on Oracle RDBMS. Developed procedures for data transformation and tracing data integrity. It was successfully used by client with more than 24 branches all over the country. Collected requirements, investigated workflow, modeled data, managed project, led development and developed of LegalDB module: automating legal cases management, handling dispute resolution and claims, resource management for the Legal Department of the Bank. Led team of the UI and Oracle developers, acted as Project Manager, successfully delivered product which integrated processing centre and Bank Led and successfully delivered product for management, accounting of the cards in Bank

    $30.00 /hr
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