Senior RF Engineer

Sepura develops Mission Critical TETRA/LTE radios (sub 6GHz)/Cellular/BT/WiFi/GNSS/NFC)

We create designs from market requirements to customer delivery in Cambridge UK and manufacture in Europe; delivering the right solutions to our worldwide customers. They include police, fire and ambulance services across the world as well as critical mining and industrial customers.

We are global leaders in the design, development and supply of innovative communications solutions in multiple market segments including emergency services. We are immersed in the transition from TETRA to LTE ESN services and developing challenging/complex radios (vehicle based and handheld devices with a vast array of support accessories) to support our customers.

We are seeking an experienced engineer to play a pivotal role developing innovative products, leveraging their expertise in RF systems/electronics design. The ideal candidate will have a proven track record in RF product design, enjoy problem-solving, and be an excellent communicator.

Come and join Sepura Ltd at an exciting time of growth and progress your career within this product focused company, based in Waterbeach, Cambridge defining the next generation of communication devices.

Role

The role is a product development/maintenance role and will include:

• Technical requirements analysis, design (down to discrete level) and specification of RF circuitry including component specification, evaluation, and sourcing
• Complete subsystem design, implementation and validation through to Approved product
• Schematic creation and PCB layout supervision
• Integration with Digital, Audio, and MMI subsystems
• Test definition design and documentation
• Root cause analysis of failures with updates to design to resolve faults
• Type approval support to ensure compliant products
• Collaboration/Interaction with all relevant departments to deliver high quality engineering solutions
• Support where required for defining/creating new products
  
  

This role may require some travel, so the successful candidate will need a full, clean driving license, own car, and valid passport. Travel expenses will be covered.

What You Need To Succeed

Behaviour

As a Senior RF Engineer you will be expected to be able to resolve some of the more complex queries, proactively collaborating with other departments, presenting and developing solutions to engineering challenges.

Qualifications

• Bachelor's degree or higher in Electronics Engineering, Telecommunications, or a related field.
  
  

Experience and Skills

• Discrete RF design experience
• Strong proven hands-on design experience
• Radio product development/integration up to 6GHz, ideally within the telecommunications or critical communications industry
• Good problem-solving and analytical abilities
• Knowledge of RF systems and technologies, including design, simulation, and testing including conformance
• Excellent time management and communication skills, with a history of delivering projects/tasks on time and with high quality.
  
  

Core RF Expertise - you will have significant design‑level experience in at least 2 of the following areas:

• RF Tx/Rx architectures
• RF transmitters and receivers
• RF Power Amplifiers
• Frequency Generation (VCO)
• Matching networks
• EMC/EMI
• Broadband communication systems
  
  

Tools & Engineering Methods

• RF simulation tools and modelling such as ADS, CST, or equivalents
• RF (circuit and system) testing procedures, protocols, and use of facilities (e.g., anechoic chambers, screened rooms)
• Use of test equipment such as Spectrum & Network Analysers, Communications testers etc.
  
  

Technology Experience - You should have strong, hands-on experience in at least one of the following technologies:

• TETRA/PMR - 100-900 MHz
• LTE/4G/5G - Sub 6GHz
• GSM - 800/900/1800 MHz
  
  

Collaboration & Delivery Skills

• Excellent communication and interpersonal skills, with the ability to effectively liaise with the team and collaborate with other departments.
• Ability to independently manage multiple varied projects simultaneously and effectively assign/delegate both internal and external resources.
• Excellent hands-on experience handling PCBs and competent of own component rework and/or modifications.
  
  

Nice to have: Experience with

• GNSS - 1.0-1.6 GHz
• WiFi - 2.4-6GHz
• NFC
• Antenna design for portable products
• Familiarity with regulatory standards and compliance in the telecommunications industry
• Knowledge of MIMO/5G including validation testing
• Analog closed loop PA linearisation
• Proficiency in additional programming languages relevant to RF design and testing.