Senior Application Support Engineer - Naas

Senior Application Support Engineer – Naas

Hybrid – 3 days per week in the office

This is an excellent opportunity to join a highly stable company with low attrition, a strong technical team, and a collaborative working environment where technology plays a key role in supporting business growth and operational excellence.

The Opportunity

We are seeking a Senior Application Support Engineer to support and enhance a portfolio of business-critical applications, integrations, and operational platforms.

This role combines technical support, application troubleshooting, systems administration, and integration management, with a particular focus on Linux, PHP, and MySQL-based environments. You will act as a key escalation point for application issues, working closely with business users, third-party vendors, and internal stakeholders to ensure the stability, performance, and continuous improvement of core systems.

The successful candidate will be comfortable operating across both support and project-based activities, with the ability to investigate complex issues, identify root causes, and implement long-term solutions.

Key Responsibilities

• Provide advanced support for business-critical applications and operational platforms.
• Troubleshoot and resolve complex issues across Linux, PHP, MySQL, Microsoft 365, and integrated third-party systems.
• Monitor application performance, system health, scheduled jobs, and data processing workflows.
• Support and maintain internally developed applications, integrations, and reporting solutions.
• Investigate database-related issues, optimise queries, and support data integrity across MySQL environments.
• Manage and troubleshoot Linux-based servers, services, and application environments.
• Support API integrations and data exchanges between internal and external platforms.
• Coordinate with external technology vendors and managed service providers to resolve incidents and technical issues.
• Assist with application upgrades, deployments, testing, and system improvements.
• Maintain technical documentation, knowledge base articles, and operational procedures.
• Participate in project initiatives relating to digital transformation, automation, and business process improvement.
• Act as an escalation point for application support incidents and service-related issues.

Skills & Experience Required

• 5+ years' experience in Application Support, Systems Support, Technical Support, or a similar role.
• Strong troubleshooting and root-cause analysis skills across business applications and infrastructure.
• Hands-on experience supporting Linux/Ubuntu environments in a production setting.
• Strong working knowledge of PHP and MySQL, including application troubleshooting and database support.
• Experience supporting web-based applications and business-critical platforms.
• Knowledge of REST APIs, JSON/XML, and system integrations.
• Experience with Microsoft 365 administration and related technologies.
• Understanding of DNS, authentication, email routing, and identity management.
• Experience working with automation processes, scheduled tasks, and data workflows.
• Ability to liaise effectively with third-party vendors and manage technical escalations.
• Strong communication skills with the ability to support both technical and non-technical stakeholders.
• Experience with ERP, finance, retail, or operational business systems would be advantageous.

What's on Offer

• Opportunity to take ownership of business-critical applications and systems.
• Exposure to a broad technology stack including Linux, PHP, MySQL, Microsoft 365, APIs, and integrations.
• Stable and growing organisation with significant investment in technology.
• Collaborative technical environment with long-term career progression opportunities.