Senior / Principal Microwave Filter Design Engineer

Design the filters that power next-generation connectivity

If you are an experienced Microwave Filter Design Engineer looking to work on genuinely complex, high-performance RF technology, this is an opportunity to step into an environment where engineering excellence is at the centre of everything.

This role sits within a highly specialised engineering business operating at the forefront of RF, microwave and mmWave technology. Their work supports critical communication systems across defence, aerospace, space and advanced telecoms.

You will take ownership of sophisticated filter designs that move from concept through to production, working on projects where precision, reliability and performance are non-negotiable.

What makes this role different?
Work on mission-critical RF and microwave systems used in real-world, high-reliability environments
Be part of a team that values deep technical expertise and hands-on engineering
Take ownership of end-to-end filter design, not just analysis
Contribute to next-generation product development and innovation
Collaborate with experienced engineers in a business known for engineering credibility and technical excellence

What you will be doing
Take full responsibility for the design and development of RF and microwave filters and subsystems
Deliver designs from concept through simulation, prototyping, validation and release
Carry out filter simulation, optimisation and tolerance analysis
Lead or contribute to new product introduction activities, ensuring designs are production-ready
Conduct hands-on tuning, testing and validation using lab equipment including VNAs
Produce and maintain high-quality technical documentation and design packs
Support customer interaction during technical discussions and project delivery
Contribute to R&D activities focused on next-generation filter technologies

What we are looking for
This is a specialist role. We are specifically seeking engineers with proven experience in RF and microwave filter design.

You will need to demonstrate:

Strong experience designing RF / microwave filters such as:
Cavity filters
Waveguide filters
Dielectric or ceramic filters
Duplexers or multiplexers
Hands-on experience across the full design lifecycle, including:
Simulation and modelling using tools such as Microwave Office, CST, ADS or HFSS
Working with S-parameters, insertion loss and return loss
Practical tuning, optimisation and validation
Laboratory experience including VNA testing and filter tuning
Experience working in a manufacturing or production-led environment such as:
RF or microwave component manufacturing
Defence, aerospace, space or telecoms
Involvement in taking designs into production, including NPI processes
Ability to operate at Senior or Principal Engineer level, with ownership of designs and contribution to project delivery

What will set you apart
Experience working on passive RF components and high-reliability systems
Background in RF subsystem or component-focused organisations
Experience mentoring engineers or leading technical workstreams

Eligibility requirements

Due to the nature of the work, you must:

Have the right to work in the UK without restriction
Be able to meet UK Security Clearance requirements, including a minimum of 5 years continuous UK residency

Salary and benefits
£55,000 to £75,000 depending on experience and level
25 days annual leave plus bank holidays
Option to purchase up to 5 additional days leave
Pension scheme with employer contribution up to 8%
Ongoing learning and development support
Paid volunteer time
Employee Assistance Programme to support wellbeing
Enhanced parental leave support

Apply now
If you are a Microwave Filter Design Engineer looking for a role where your work directly impacts advanced communication systems, we would be keen to speak with you.

Apply today or contact us for a confidential discussion