Application Support Engineer

Application Support Engineer

Location: Milton Keynes / Hybrid
Salary & Benefits: £40k to £50k, 22/25 Days Holiday, Medical Insurance, Life Insurance

We’re hiring an Application Support Engineer to join a telecoms company that builds and supports mobile infrastructure people rely on every day.

This isn’t a giant corporate machine or a short-staffed chaos-fest. It’s a stable, well-run tech team doing innovative and meaningful work.

You’ll join a small, experienced team that handles support the right way: investigate, understand, fix, and improve. If you’re after variety, ownership, and space to learn, this could be a great fit.

The team’s solid. Most have been here 5, 10, even 20 years, and that’s down to how people are treated. Trusted to get on with the job, support when needed, and given room to grow.

You’ll be backed by a hands-on manager who’s there when you need help but won’t micromanage.

Telecoms is essential infrastructure. It’s fast-moving and here to stay. This role puts you right in the middle of it.

You’ll support and improve a live mobile platform across apps, APIs, CRMs, and SQL databases. You’ll own technical issues, support testing and releases, and spot patterns to stop things from breaking.

You’ll also contribute to knowledge sharing and work closely with engineering and infrastructure teams to keep services running smoothly.

You’ve worked in application support, platform support, or tech ops and you’re confident with SQL. You’re good at spotting what matters, comfortable switching between detail and big picture, and don’t wait to be told what to do. If you’ve worked in telecoms, great. If not, and you're keen to learn, that works too.

Responsibilities & Experience

• Deliver hands-on application support, configuring and troubleshooting across a suite of products
• Take ownership of support cases, triage issues, and communicate clearly with customers and internal teams
• Confident working with SQL Server 2016+ (or MySQL, Informix, Oracle)
• Strong in SQL query tuning, indexing, and database performance troubleshooting
• Comfortable supporting UAT/OAT testing and ensuring platform readiness for release
• Grasp of database structures and common performance issues (like indexing or slow queries

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