RF Lead Engineer Location: Cambridge, UK Team: Engineering Job Type: Full-Time, Permanent About Us: Forefront RF is a fabless semiconductor company developing breakthrough RF technology that radically simplifies RF front-end architectures for mobile and connected devices. Our long-term vision is to empower anyone to treat global connectivity as a commodity, effortlessly adding it to any device. We lead through innovation, solving our customers’ toughest challenges, enabling them to stay ahead by pushing the boundaries of RF design. Our Values: Our values are the quiet nudge that help us to be our best in every interaction. One team : We are one team. Collaboration is at the heart of how we work – we listen, share, and build solutions together. We support one another, embrace challenges and fun, and celebrate collective success. Together with our stakeholders, we turn collaboration into outcomes that matter. Innovation with intent : We operate at the forefront of technology, building innovative pathways to the future that meets real customer needs. Solutions driven : We deliver effortless connectivity through innovative, manufacturable designs that solve real world challenges. Customer focused: We act with integrity and hold ourselves accountable to deliver customer focused solutions. All decisions we make are guided by a deep commitment to meeting our customers’ expectations. Sustainable : We make responsible choices in design, supply chain, and operations. We simplify where possible, reducing waste, and contributing to a more efficient and sustainable RF ecosystem. Role Overview: We are seeking a skilled RF Lead Engineer to join our growing development team in Cambridge, UK. You will lead the detailed RF design, development, and delivery of RF subsystems within a defined system architecture. This role is hands-on and delivery-focused, combining deep RF technical expertise with team leadership, mentoring, and cross-functional collaboration. You will be responsible for ensuring RF designs meet performance, quality, and schedule requirements, working closely with the System Architect and other engineering disciplines. Key Responsibilities: RF Technical Leadership Lead RF design activities across assigned projects in line with system-level requirements and architecture Own subsystem performance, implementation, and technical delivery Lead design reviews and provide technical approval for RF designs RF Design & Development Design, simulate, and validate RF circuits and subsystems (e.g. LNAs, PAs, filters, Duplexers) Translate system and architectural requirements into detailed RF designs Support RF trade-offs and optimisation within given architectural constraints Testing & Verification Define and execute RF test plans and verification activities Analyse RF measurements including S-parameters, NF, phase noise, EVM, ACPR, and linearity Lead troubleshooting and root-cause analysis of RF performance issues Mentorship & Team Development Provide technical guidance and mentoring to RF engineers Promote best practices in RF design, documentation, and verification Support skills development and knowledge sharing within the RF team Cross-Functional Collaboration Work closely with the System Architect, and full multi-disciplinary team Provide RF input to project planning, risk management, and technical decision-making Support manufacturing, production test, and in-service support activities Requirements About you: You’re excited by the opportunity to work with breakthrough technologies. You may thrive in this role if you have some or all the following: Education & experience: Degree (or equivalent experience) in RF Engineering, Electronics, Physics, or a related field Strong hands-on experience in RF design across relevant frequency ranges Proven experience leading RF technical delivery on complex projects Solid understanding of RF theory, measurements, and practical implementation Experience using RF simulation and design tools (e.g. ADS, AWR, CST, HFSS) Proficient with RF test equipment (VNAs, spectrum analysers, signal generators, power meters, etc.) People Skills: Delivery-focused with strong technical judgement Proactive approach to problem-solving with a resilient attitude towards ambiguity. Excellent problem-solving and analytical skills. Strong communication and collaboration abilities. Ability to work independently and as part of a team. Attention to detail and commitment to producing high-quality output. Benefits Competitive salary and pension contributions. Company Share Option Scheme. 25 days holiday + bank holidays. Weekly company lunches. Flexible work hours and remote work options. Private medical insurance Life assurance x 4 Income protection Healthshield Cash plan Heka flexible benefits platform We believe in equal opportunities We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status, or any other basis covered by appropriate law. All employment is decided on the basis of qualifications, merit, and business need.