Low-Power RF Engineer: Mesh Networks & Field Trials

KO2 Embedded Recruitment Solutions LTD; Greater London; On-site; GBP 50,000 - 61,000; Full time

Job summary

KO2 Embedded Recruitment Solutions LTD is seeking a mid-level RF Engineer to design and test low-power radio links and mesh networks for defence/space projects in Gloucestershire. You will perform bench work, field trials and customer demonstrations in a small, hands-on team.

The role requires a degree in electronic engineering or physics, solid RF/wireless experience, and ability to work with test equipment and regulatory compliance. Some travel for field trials is expected.

Qualifications

• Degree in electronic engineering, physics or a related subject, or equivalent experience.
• Solid commercial experience in RF or wireless engineering at mid level.
• Strong understanding of low-power radio design and protocols such as BLE, IEEE 802.15.4, Thread, Zigbee, LoRa or proprietary sub-GHz systems.
• Practical mesh networking experience, including topology, routing and multi-hop behaviour.
• Confident with RF test equipment and bench debugging.
• Good knowledge of antenna fundamentals, impedance matching and link budgets.
• Ability to achieve SC clearance, if you already hold it even better.
• Willing to travel occasionally for field trials and demonstrations.

Responsibilities

• Design, develop and optimise low-power RF hardware and radio links for small, battery-powered sensor nodes.
• Develop and improve mesh networking, including routing, multi-hop performance, latency and resilience.
• Carry out link budget analysis and range planning, and help choose antennas, bands and radio modules.
• Support RF front-end and antenna design, PCB layout reviews, and matching and tuning on the bench.
• Test and characterise radio performance in the lab and field using spectrum analysers, VNAs and signal generators.
• Work with embedded, hardware and AI teams to balance range, data rate and power within tight size, weight and power limits.
• Support field trials and customer demonstrations, including deploying units and diagnosing link issues on site.
• Write clear test reports and technical documentation, and support EMC and regulatory compliance.

Skills

RF/wireless engineering

Low-power radio design

Mesh networking

RF testing equipment

Field deployment

Education

Degree in electronic engineering or physics

Tools

Spectrum analysers

VNAs

RF test equipment

PCB layout reviews

Job description

KO2 Embedded Recruitment Solutions LTD is seeking a mid-level RF Engineer to design and test low-power radio links and mesh networks for defence/space projects in Gloucestershire. You will perform bench work, field trials and customer demonstrations in a small, hands-on team.

The role requires a degree in electronic engineering or physics, solid RF/wireless experience, and ability to work with test equipment and regulatory compliance. Some travel for field trials is expected.