Principal Antenna Engineer

Security Clearance: Eligible to obtain UK Security Clearance (SC). Please review our Security Clearance Guidance for Applicants before applying.

At Steatite, we design, manufacture, and supply advanced technology solutions — from industrial embedded computing and custom lithium battery packs to secure communications, antennas, and imaging systems.

Our innovations operate in some of the world’s most demanding environments. From the ocean floor to the edge of space, Steatite technology ensures critical systems perform reliably, consistently, and safely — 24/7. Whether enabling scientific discovery in extreme conditions, transmitting high‑bandwidth data across challenging terrain, processing vast volumes of traffic data, or supporting secure transactions on the move, our solutions are built to perform when it matters most.

From day one, you will be part of an organisation that prioritises your safety and wellbeing, values your contribution, and is committed to making your career both rewarding and impactful.

Looking for more than just your next role? Join us in the beautiful rolling hills of Herefordshire, where you can combine an exciting career with an exceptional quality of life. We welcome applications from across the UK, and relocation support is available for eligible candidates, subject to individual circumstances and business requirements.

The Principle Antenna Engineer is a senior technical leadership role, combining deep expertise in RF and antenna engineering with delegated managerial responsibilities. The role involves the development of new products, advanced technical solutions, and improved engineering processes that support the strategic goals of the business. You will own, manage and direct customer technical queries. When deputising for the Chief RF Engineer, the role holder is responsible for ensuring that all RF and antenna products are designed and manufactured to be safe, robust, and reliable, meeting both internal engineering standards and customer requirements.

You will act as the deputy design authority for all RF and antenna‑related products, including oversight of testing, verification, and compliance activities. You will be involved in mentoring and developing junior engineers, fostering technical excellence across the team while maintaining awareness of emerging technologies and lead innovation initiatives. You will deputise in representing the engineering function in reporting and communication with key internal and external stakeholders.

You will design and develop cutting edge antenna designs, lead customer queries and support the Chief RF Engineer in delivering project and product excellence, innovation and process management alongside the mentoring of junior engineers. You will use CST Microwave Studio and associated EM tools alongside Microsoft Dynamics 365 (Project Operations/Planner) to support CRM and ERP activity, scheduling, governance and dashboard reporting.

• Design and Development
  • Support design, development, and optimisation of antenna solutions across relevant frequency bands and applications.
  • Conduct and support EM modelling, simulation, and analysis to sustain robust, high‑performance antenna designs.
  • Maintain awareness of emerging technologies, industry trends, and state‑of‑the‑art methods, supporting innovation across the team.
  • Support expert technical input to complex engineering decisions, design reviews, and studies.
• Leading Customer Queries
  • Lead and coordinate the response to customer technical queries, ensuring answers are accurate, timely, commercially aware, and aligned with business priorities.
  • Provide authoritative RF and antenna engineering input to customers, supporting proposal discussions, technical reviews, issue resolution, and product selection activities.
  • Translate complex technical information into clear, customer‑facing explanations, reports, and recommendations that build confidence and support decision‑making.
  • Work closely with commercial, project, and engineering teams to ensure customer commitments are technically sound, achievable, and clearly communicated.
  • Support in escalating, prioritising, and…