Senior RF Design Engineer — High-Impact Hardware

SiNIX; Göteborgs kommun; On-site; SEK 900,000 - 1,100,000; Full time

Job summary

SiNIX is seeking a driven Senior RF Design Engineer to join our R&D hardware team at our Gothenburg headquarters. You will develop advanced RF electronics for high-performance systems where reliability matters.

You will own your work, collaborate across international teams, and contribute to system architecture, design verification, and production readiness. The role emphasizes hands-on hardware development, lab measurements, and mentoring junior engineers.

Qualifications

• M.Sc. in Electrical Engineering, RF Engineering, Engineering Physics or a related field.
• Experience with RF circuit design, including RF front ends, on PBA level.
• Experience with RF simulation tools such as Keysight ADS or Ansys HFSS.
• Experience with antenna design and optimization.
• Experience with RF test and verification using VNAs, spectrum analyzers and signal generators.
• Knowledge of EMC and regulatory requirements for RF emissions.
• Solid experience with PCB/PBA toolsets such as Cadence, Siemens or Altium.
• Strong problem-solving skills and attention to detail.
• Ability to work effectively in a collaborative team environment.
• Fluent in English (written and spoken).
• Meritorious with experience of RF system architecture.
• Meritorious with mixed-signal experience (ADC/DAC) and clocking.
• Meritorious with test automation using Python or MATLAB.
• Meritorious with experience of Cadence PCB/PBA design tools.
• Meritorious with experience of hi-rel electronics design for demanding environments, such as aerospace or space.
• Meritorious with experience of mentoring junior engineers.

Responsibilities

• RF Circuit Design: Develop robust, high-performance RF circuits on PCB/BA level.
• RF front ends: Design low-noise amplifiers, mixers, filters and power amplifiers.
• Layout support: Realize solutions through component selection and layout guidance.
• High reliability: Design for harsh environments, derating and long lifecycles.
• RF Simulation and Layout: Simulate circuits and define stack-ups and transitions.
• Antenna Design: Design, simulate and optimize antennas for various applications.
• Mixed-Signal integration: Combine RF, data converters and clocking with digital processing.
• System Architecture: Bridge system-level concepts into RF domain and study future solutions.
• Bring-Up and Testing: Drive board bring-up and characterize with VNAs and spectrum analyzers.
• Test automation: Perform test automation in Python and/or MATLAB.
• EMC: Apply EMC principles and support EMI testing.
• Full lifecycle: Support from requirements to deployed functionality and maintenance.
• Documentation and mentoring: Maintain docs and mentor junior engineers.

Skills

RF circuit design

RF front ends

RF simulation

Antenna design

RF test & verification

EMC knowledge

PCB/PCB tools

Python/MATLAB

Mentoring

English proficiency

Education

M.Sc. in Electrical Engineering or related field

Tools

Cadence

Siemens

Altium

Keysight ADS

Ansys HFSS

Job description

SiNIX is seeking a driven Senior RF Design Engineer to join our R&D hardware team at our Gothenburg headquarters. You will develop advanced RF electronics for high-performance systems where reliability matters.

You will own your work, collaborate across international teams, and contribute to system architecture, design verification, and production readiness. The role emphasizes hands-on hardware development, lab measurements, and mentoring junior engineers.