Senior RF Design Engineer

Senior RF Design Engineer

Wappenham, Northamptonshire Hybrid Working (3 days onsite, 2 WFH) Competitive Salary + Benefits

About My Client

My client is a globally recognized UK defense technology leader with 45+ years of innovation in advanced communications systems, long-range data links, and mission-critical RF solutions. Their systems support military and security operations in over 100 countries worldwide.

They're expanding their engineering team to develop next-generation products for defense, aerospace, and battlespace communications markets.

The Opportunity

An exciting opportunity for a Senior RF Design Engineer to join a small, dynamic team designing world-class RF systems. You'll own full-lifecycle RF circuit design-from architecture and simulation through PCB development, testing, and production support.

This is hands-on, technical RF engineering on cutting-edge defense technologies in a fast-paced but rewarding environment.

Key Responsibilities

RF Circuit Design:

• Design high-power wideband RF amplifiers (up to 200W) using GaN/LDMOS technology
• Develop RF filters, LNAs, upconverters, downconverters, and RF frontends
• Transmitter/receiver circuit design and antenna development
• RF system architecture and electromagnetic simulation
• PCB schematic capture, layout, and component creation using Altium Designer

Technical Leadership:

• Lead and contribute to design reviews (PDR, IDR, CDR)
• Verify designs against specifications
• Troubleshoot hardware/system issues across the business
• Mentor junior engineers assigned to your projects
• Collaborate with multidisciplinary engineering teams
• Manage external design partners when required
• Support manufacturing and production as needed

Essential Requirements

Must Have (5+ years minimum):

• Proven RF circuit design experience (not just layout or systems-level work)
• High-power RF amplifier design using GaN, LDMOS, or similar technologies
• RF filter design from concept to implementation
• Transmitter/receiver circuit design experience
• LNA, upconverter, downconverter design expertise
• Proficiency with PCB design software (Altium preferred)
• Experience with RF simulation tools (AWR Microwave Office, Ansys HFSS, or similar)
• Strong analog and digital electronics knowledge
• Hands-on experience with RF test equipment (VNAs, spectrum analyzers, oscilloscopes)
• British Citizen or ability to obtain SC security clearance
• Degree in Engineering or equivalent work experience