RF Engineer

Job Description RF EngineerAn exciting opportunity for an experienced RF Engineer to join an innovative stealth start-up in Saffron Walden to focus on developing, testing, and enhancing RF circuits, antennas, and systems to meet performance, reliability, and regulatory standards. This company are tackling some of the worlds most pressing challenges and is founded by experts in their field, who have already realised success with other start-ups, so it offers the chance to work in an environment filled with technological innovation whilst working on cutting-edge tech.Location: Saffron Walden, UK fully on-site due to the nature of the roleSalary: 55,000 - 85,000 per annum DOERequirements for RF Engineer:Highly experienced in RF Design and TestingExperienced in RF Design Software such as HFSS, CST, ADS, MATLAB1st class honours or a high 2.1 degree in Engineering, Maths, Physics, Electronics or similar.In-depth understanding of phased array antennas and beamforming technologiesExperience with RF Front-end components and RF communication standardsKnowledge of SDRs and tools like GNU Radio for signal processingStrong problem-solving abilityYou must be in a position to qualify for SC Clearance due to the nature of some customersResponsibilities for RF Engineer:Develop and refine RF components and systems, including antennas, filters, and amplifiers.Use simulation tools like HFSS, ADS, CST, and MATLAB to model and analyse RF systems.Conduct testing and validation of RF hardware to meet performance standards and regulatory requirements.Diagnose and address issues related to RF interference and signal integrity.Partner with multidisciplinary teams to integrate RF elements into broader systems.Design phased array antennas and implement beamforming technologies for advanced high-frequency applications.Record test outcomes and ensure adherence to EMC and EMI compliance standards.Work with Software Defined Radios (SDRs) and tools such as GNU Radio for signal processing and evaluation.What this offers:An opportunity to join a success story in the makingWorking on cutting-edge technologiesGreat remunerationApplications:If you would like to enquire about this unique RF Engineer opportunity, we would love to hear from you. Please send an up-to-date CV including details of your online repository via the relevant link.Were committed to creating an inclusive and accessible recruitment process. If you require reasonable adjustments for your application or during the review process, please highlight this by separately emailing [email protected] (if this email address has been removed by the job board, full contact details are readily available on our website). RedTech Recruitment Ltd focuses on finding roles for Engineers and Scientists leaving academia, entering industry. Even if the above role isnt of interest, please visit our website to see our other opportunities.We are an equal opportunity employer and value diversity at RedTech. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.Keywords: RF Design Engineer / Wireless Systems Engineer / Microwave Engineer / RF Systems Engineer / Antenna Design Engineer / Radio Frequency Specialist / RF Test and Validation Engineer / Communication Systems Engineer / RF Hardware Engineer / RF Development Engineer

Created: 2026-03-20