Senior System Test Engineer

Yoh, A Day & Zimmermann Company; Southampton; On-site; GBP 60,000 - 80,000; Full time

Job summary

Yoh, A Day & Zimmermann Company in the UK is seeking a hands-on test engineer to explore how advanced wireless systems behave in real-world conditions.

You will work at the intersection of RF, software, and 5G/ NTN technology, tackling complex problems and taking ownership of testing strategies. If you enjoy hands-on tinkering and delivering robust validation, this role offers meaningful impact.

Qualifications

• Experience in wireless communications.
• RF engineering or RF test.
• Python development and automation.
• System integration and validation.
• 4G/5G, PHY or MAC layer technologies.
• Troubleshooting complex technical issues.

Job description

Most test engineering roles involve executing someone else's plan.

This one doesn't.

The challenge here is figuring out how complex wireless systems behave when the real world gets involved.

The work sits where RF, software, digital systems and 5G communications meet. One day you could be investigating a PHY layer issue, the next building Python automation, debugging a system-level problem or helping translate customer requirements into a test strategy.

This isn't a role for someone who wants to follow a script.

It's for an engineer who enjoys understanding how things work.

What makes it interesting?

• Advanced 5G and NTN technology
• Difficult technical problems that don't always have obvious answers
• Exposure across RF, software, systems and validation
• Customer-facing projects with real-world impact
• A small engineering team where people are trusted to make things happen

You'll probably have experience in some combination of:

• Wireless communications
• RF engineering or RF test
• Python development and automation
• System integration and validation
• 4G/5G, PHY or MAC layer technologies
• Troubleshooting complex technical issues

Most importantly, you'll be the type of engineer who enjoys solving problems, learning new things and taking ownership.

If you've spent your career close to wireless systems and still enjoy getting hands-on with technology, we'd like to hear from you.