X4 Technology
Senior Printed Circuit Board Designer
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PCB Design Engineer – HDI, High-Speed & RF Multilayer PCB Design
An exciting opportunity has arisen for a PCB Design Engineer to join a pioneering engineering team developing cutting-edge technology at the forefront of quantum computing, advanced imaging and surveillance detection systems at a £100,000+ salary and one of the best packages on the market.
Working on highly classified programmes, you'll play a key role in the design and delivery of complex HDI, high-speed and RF multilayer PCBs that enable next-generation sensing, signal processing and compute platforms. This is a genuinely unique opportunity to work on technology that pushes the boundaries of what's possible, alongside some of the UK's leading hardware and electronics engineers.
This role is fully onsite, providing close collaboration with multidisciplinary electronics, FPGA, RF, embedded software and systems engineering teams throughout the complete product development lifecycle.
The Role
We're looking for a PCB Design Engineer who enjoys solving complex layout challenges and takes ownership of designs from concept through to manufacture. You'll be responsible for delivering technically demanding PCB layouts where signal integrity, manufacturability, thermal performance and physical constraints are all critical.
Projects will involve a mix of HDI multilayer digital designs, high-speed interfaces, RF circuitry, power electronics and mixed-signal hardware, requiring close interaction with hardware, RF and systems engineers.
Key Responsibilities
- Own PCB layout from initial requirements through to manufacturing release.
- Design complex HDI multilayer PCBs (8–12+ layers) incorporating high-speed digital, RF and mixed-signal circuitry.
- Develop highly constrained layouts using:
- Microvias and stacked microvias
- Blind/buried vias
- Fine-pitch BGAs
- Non-soldermask-defined (NSMD) pads
- High-density interconnect techniques
- Produce impedance-controlled routing including:
- Differential pairs
- Length matching
- Controlled impedance traces
- Coplanar waveguide
- Microstrip transmission lines
- Design RF layouts supporting GHz-frequency operation with careful attention to transmission-line performance, grounding and transitions.
- Create and maintain PCB design rules, constraints and clearance requirements, including complex rule management.
- Work closely with hardware engineers to convert schematics into robust production-ready PCB designs, while also contributing to schematic capture where required.
- Optimise layouts for EMC, signal integrity, thermal performance and manufacturability.
- Support prototype build, PCB bring-up, testing and design iterations.
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Experience We're Looking For
- Significant experience designing complex multilayer PCBs for high-performance electronic products.
- Strong background in HDI PCB design with experience of:
- Microvias
- Stacked microvias
- Fine-pitch layouts
- High-density routing
- Experience with high-speed digital PCB layout and controlled impedance design.
- Knowledge of RF PCB layout techniques including:
- Coplanar waveguide
- Microstrip
- SMA launch optimisation
- Transmission-line matching
- RF component placement
- Experience designing boards operating into the GHz frequency range.
- Good understanding of signal integrity, power integrity and PCB stack-up design.
- Experience defining PCB constraints, clearance rules and custom design rule creation.
- Familiarity with thermal management techniques for high-power electronics.
- Experience working closely with multidisciplinary engineering teams throughout the product lifecycle.
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Desirable Experience
- Mixed-signal PCB design.
- Power sequencing and analogue circuitry.
- RF front-end hardware.
- Design for manufacture (DFM) and design for test (DFT).
- Altium Designer or similar enterprise PCB CAD tools.
- Experience supporting prototype build and production release.
Why Join?
You'll be joining an organisation investing heavily in advanced technologies with projects spanning quantum computing, next-generation sensing, surveillance and intelligent imaging systems. Engineers are given genuine technical ownership and the opportunity to work on programmes that have a real-world impact while working with the latest PCB, RF and electronic design technologies.
If you're looking for technically challenging PCB design work, long-term career development and the opportunity to solve some of the industry's most demanding layout problems, this is an outstanding opportunity. Please don't be put off if you don't meet all of the above criteria, the most important is to be a very competent PCB design engineer and be ok with full time onsite in Hampshire whilst being a British National in order to gain the necessary security clearance.
Security Requirements
Due to the highly classified nature of the work, this position requires applicants to be British Nationals who are eligible to obtain and maintain the appropriate level of UK Security Clearance. Unfortunately, candidates who do not meet this requirement cannot be considered.
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