Radio Frequency Engineers

Principal / Lead / Senior and RF Engineer

Location: County Durham OR Cambridge

The Opportunity

We are seeking experienced Senior, Principal RF Engineers to join a growing engineering team at a modern, state‑of-the-art development and manufacturing facility in County Durham or Cambridge

This is an exciting opportunity to work on a diverse range of cutting‑edge telecommunications, defence, space and critical communications products, taking concepts through design, development, verification and production.

Depending on experience and seniority, successful candidates will contribute as technical specialists, project leads, or senior technical authorities, supporting the development of innovative RF and millimetre‑wave solutions while helping shape engineering best practice across the organisation.

Key Responsibilities

RF & mmWave Design

• Design, simulate and develop RF and mmWave circuits, components, modules and subsystems.
• Take ownership of RF specifications, architecture, design, implementation and verification activities.
• Conduct RF system analysis, including:
• System line-up analysis
• Gain and noise budgeting
• Tolerance and yield analysis
• Performance optimisation
• Design and develop amplifiers, filters, transceivers and integrated RF subsystems.
• Select and evaluate RF components, ICs and MMICs.
• Support technology development and innovation initiatives.

Testing & Validation

• Carry out RF measurements, characterisation and validation of prototypes and production hardware.
• Develop test plans, procedures and verification strategies.
• Analyse test results and support design optimisation.
• Investigate and resolve technical issues through effective troubleshooting and root-cause analysis.
• Support reliability testing and product qualification activities.

Product Development & Manufacturing

• Support products through the full lifecycle from concept through prototyping and into volume production.
• Ensure designs meet performance, cost, quality and manufacturability targets.
• Collaborate with manufacturing and process engineering teams to optimise yield and production performance.
• Apply Design for Manufacture (DFM) principles throughout the development process.
• Support problem‑solving and fault diagnosis during product introduction and production.

Technical Leadership

• Lead technical activities across projects and programmes.
• Provide guidance and mentoring to engineers within the team.
• Support the development and implementation of engineering best practices.
• Lead and participate in design reviews, technical audits and peer reviews.
• Identify, assess and manage technical risks.

Project & Stakeholder Collaboration

• Work closely with project managers to deliver projects on schedule and within budget.
• Collaborate with electronics, mechanical, PCB layout, software, systems, manufacturing and test engineers.
• Support customer discussions, technical proposals and RFQs where required.
• Present technical work, findings and project updates to internal and external stakeholders.

Documentation

• Produce and maintain comprehensive technical documentation, including:
• Design reports
• Test specifications
• Test reports
• Design release documentation
• Ensure engineering records are maintained to a high professional standard.

Skills & Experience

• Degree (or equivalent experience) in RF, Microwave, Electronics, Communications Engineering or a related field.
• Significant experience in RF and/or mmWave circuit and system design.
• Strong knowledge of:
• RF and microwave engineering principles
• System line-up analysisTolerance and yield analysis
• Design for manufacture
• RF measurement and test techniques
• Experience using RF design and simulation tools such as:
• ADS
• Microwave Office
• EMPro
• Or equivalent tools
• Strong analytical and problem‑solving capabilities.
• Excellent communication and collaboration skills.
• Experience in telecommunications, aerospace, defence, space or critical communications industries.
• Filters
• Transceivers
• RF modules and subsystems
• Experience supporting products from concept through to high‑volume manufacture.
• Previous technical leadership or mentoring experience.
• Experience supporting customer‑facing technical discussions and bids.

What You’ll Bring

• A passion for RF and millimetre‑wave technology.
• A practical, hands‑on approach to engineering problem solving.
• The ability to balance technical excellence with project delivery objectives.
• A collaborative mindset and willingness to share knowledge across multidisciplinary teams.
• A drive to contribute to advanced communication technologies and next‑generation products.

What’s on Offer

• Competitive salary commensurate with experience.
• Access to advanced RF design, simulation and test facilities.
• Opportunities to work on industry‑leading telecommunications, defence and space programmes.
• Career progression opportunities across Senior, Lead and Principal Engineer pathways.
• A collaborative environment focused on innovation, technical excellence and continuous development.

If you’re looking to take the next step in your RF engineering career and work on challenging, high‑performance RF and millimetre‑wave technologies, we’d love to hear from you.

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