SQL developers are the masters of database design and programming. They take many roles including management of servers, database programming, database design, and simple maintenance and backups. It can be a stressful job since applicants support all the company data, which is the heart of digital assets. They usually take middle of the night phone calls and lead disaster recovery testing and auditing. However, a SQL developer’s salary is also in the higher spectrum of the IT industry to compensate for the hard work.

What Does a SQL Developer Do?

SQL developers work with administrators to create designs and stored procedures that have the best performing results. Programmers run tests and identify any weaknesses in code that could create performance issues with applications. SQL developers work with other coders in the business to create a data and presentation layer for results. Developers could be responsible for small databases or ones with billions of records. It’s their job to code queries that use the least amount of resources and return results within milliseconds.

SQL Developer Job Responsibilities and Duties

SQL developers write queries for applications. These queries can be for websites, internal customer service management applications, or even just reports. While the SQL language is similar across platforms, applicants should know the nuances between MySQL, Oracle and SQL Server. They should also have a basic understanding of SQL management for these platforms. They work closely with front-end developers to ensure the right data is returned with a fast response. They are also responsible for working with security experts to protect the data.

Other job responsibilities include:

  • Create diagrams and form relationship tables between each entity
  • Create database objects such as tables, users, stored procedures, triggers and views
  • Choose identify fields for each table and choose the right primary key
  • Index tables for faster results
  • Write functions for common procedures for other developers to use
  • Avoid situations of deadlocking or dirty reads
  • Protect the database against SQL injection
  • Develop reports either through stored procedures or applications such as SSRS
  • Deploy SQL code to testing, staging and production servers
  • Run performance tests on queries to ensure they are optimized for speed
  • Design and create data warehouses and clusters
  • Create cubes for analysis services

SQL developers can start either as interns or working in other development positions. Usually, applicants working with other front-end applications such as a website or internal CRM are face with writing stored procedures and SQL code. These positions help applicants learn the SQL language and work with database performance. SQL developers usually stick to database programming, but they can also work with other languages such as Java, C#, C++, PHP, VB.NET and Python.