Salary: £38,000 - 42,000 per year Requirements: Solid experience working with PHP at a mid or senior level Strong JavaScript skills, including working with APIs Good knowledge of MariaDB/MySQL, including database structure and performance Experience with AWS (e.g., hosting, deployments, or working with cloud-based services) Experience working on live systems, especially where data sensitivity matters Understanding of secure coding and data protection Able to work independently and make sensible technical decisions Experience dealing with older or existing codebases Responsibilities: Building and maintaining applications using PHP Developing front-end features with JavaScript to keep workflows simple and intuitive Managing and improving databases (MariaDB/MySQL), making sure data is accurate and performs well Keeping systems secure, stable, and easy to audit Investigating and fixing issues in live environments without causing disruption Writing clean, readable code that others can easily work with Getting involved in code reviews and general improvements Supporting less experienced developers when needed Technologies: AWS Cloud JavaScript LESS MariaDB MySQL PHP More: We are a dynamic company located in Barnsley, offering a competitive salary of up to £50,000 along with a great culture and benefits. As a Senior Software Developer, you will join our team to work on live systems while handling sensitive data and maintaining reliable workflows. We value proactive developers who think critically about system integrity and stability, and we encourage collaboration and growth within our team. last updated 18 week of 2026