Senior RF Engineer

Molex; Cumbernauld; On-site; GBP 91,000 - 136,000; Full time

Job summary

Molex in the United Kingdom seeks a Senior RF Engineer to join the Engineering team in Cumbernauld, North Lanarkshire. You will lead RF circuit and subsystem design for high-frequency applications, guiding from concept to production and ensuring exceptional performance.

You will perform simulations with ADS, HFSS and SPICE, translate designs into manufacturable layouts using Altium Designer, and mentor junior engineers while collaborating with mechanical, digital, and manufacturing teams.

Qualifications

• 10+ years of hands-on experience in RF design, simulation, and testing.
• Expert-level proficiency with Keysight ADS, Ansys HFSS and SIwave simulation tools.
• Proven track record of delivering high-performance RF designs from concept through production.
• Deep understanding of RF principles, including impedance matching, filter design, and electromagnetic compatibility.
• Strong problem-solving skills and the ability to work independently on complex technical challenges.

Responsibilities

• Lead the design and development of advanced RF circuits, subsystems, and modules for applications ranging from wireless communications to radar.
• Perform detailed simulations using ADS, HFSS, and SPICE to optimize performance, minimize losses, and ensure compliance with specifications.
• Translate designs into manufacturable layouts using Altium Designer, collaborating closely with PCB layout engineers to meet RF performance goals.
• Conduct rigorous bench testing, validation, and troubleshooting of prototypes, using state-of-the-art RF test equipment.
• Work cross-functionally with mechanical, digital, and manufacturing teams to ensure seamless integration of RF designs into complete systems.
• Mentor junior engineers, sharing best practices.

Skills

RF design

High-frequency simulations

ADS

HFSS

SIwave

Altium Designer

Mentoring

Problem solving

Independent work

Tools

Keysight ADS

Ansys HFSS

SIwave

Altium Designer

Job description

Camarillo, California | Concord, New Hampshire | Cumbernauld, North Lanarkshire

We are currently looking for a Senior RF Engineer to join our Engineering team, ideally based either in Camarillo, CA or Concord, NH. As a Senior RF Design Engineer, you’ll be the technical cornerstone of our RF product development. Your designs will not only meet exacting performance standards but also push the boundaries of what’s possible in high-frequency systems. You’ll guide projects from concept to production, ensuring that every circuit, simulation, and test delivers excellence

Our Team

The Electronic Systems business unit is a segment of Molex's Aerospace & Defense Solutions division. With primary locations in California, New Hampshire, Pennsylvania USA and Cumbernauld UK, we design and manufacture high performance mission critical electronics:

• Rugged power supply and computing systems in VITA VPX and VNX+ form factors
• RF and Satcom: ADC/DAC digital direct sampling and processing systems
• FPGA accelerated computing platforms featuring AMD and Altera devices in PCIe form factors
• Microelectronics: Custom ruggedised and miniaturised assemblies

Find out about our product range at our website: www.bittware.com.

What You Will Do

• Lead the design and development of advanced RF circuits, subsystems, and modules for applications ranging from wireless communications to radar.
• Perform detailed simulations using ADS, HFSS, and SPICE to optimize performance, minimize losses, and ensure compliance with specifications.
• Translate designs into manufacturable layouts using Altium Designer, collaborating closely with PCB layout engineers to meet RF performance goals.
• Conduct rigorous bench testing, validation, and troubleshooting of prototypes, using state-of-the-art RF test equipment.
• Work cross-functionally with mechanical, digital, and manufacturing teams to ensure seamless integration of RF designs into complete systems.
• Mentor junior engineers, sharing best practices.

Who You Are (Basic Qualifications)

• 10+ years of hands-on experience in RF design, simulation, and testing.
• Expert-level proficiency with Keysight ADS, Ansys HFSS and SIwave simulation tools.
• Proven track record of delivering high-performance RF designs from concept through production.
• Deep understanding of RF principles, including impedance matching, filter design, and electromagnetic compatibility.
• Strong problem-solving skills and the ability to work independently on complex technical challenges.

What Will Put You Ahead

• Strong working knowledge of Altium Designer for PCB layout and RF board design.
• Experience of AMD RFSoC or Altera FPGA devices and tools.
• Mil-Spec design practices and compliance (VPX, VNX+ etc).
• Detailed understanding of latest ADC, DAC and clock circuitry from leading suppliers such as TI and ADI.

For this role, we anticipate paying $120,000 - $180,000 per year. This role is eligible for variable pay, issued as a monetary bonus or in another form.

At Koch companies, we are entrepreneurs. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic location. If you have questions, please speak to your recruiter about the flexibility and detail of our compensation philosophy.

Hiring Philosophy

All Koch companies value diversity of thought, perspectives, aptitudes, experiences, and backgrounds. We are Military Ready and Second Chance employers. Learn more about our hiring philosophy here .

Who We Are

As a Koch company, Molex is a leading supplier of connectors and interconnect components, driving innovation in electronics and supporting industries from automotive to health care and consumer to data communications. The thousands of innovators who work for Molex have made us a global electronics leader. Our experienced people, groundbreaking products and leading-edge technologies help us deliver a wider array of solutions to more markets than ever before.

At Koch, employees are empowered to do what they do best to make life better. Learn how our business philosophy helps employees unleash their potential while creating value for themselves and the company.

Our benefits plan includes - medical, dental, vision, flexible spending and health savings accounts, life insurance, ADD, disability, retirement, paid vacation/time off, educational assistance, and may also include infertility assistance, paid parental leave and adoption assistance. Specific eligibility criteria is set by the applicable Summary Plan Description, policy or guideline and benefits may vary by geographic region. If you have questions on what benefits apply to you, please speak to your recruiter.

Additionally, everyone has individual work and personal needs. We seek to enable the best work environment that helps you and the business work together to produce superior results.

Equal Opportunity Employer, including disability and protected veteran status. Except where prohibited by state law, some offers of employment are conditioned upon successfully passing a drug test. This employer uses E-Verify. Please click here for additional information. (For Illinois E-Verify information click here , aquí , or tu ).