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