Mixed-Signal IC Design Engineer

What you'll do

Join the CERN Experimental Physics Department and help develop next-generation detector technologies for future High Energy Physics experiments. As part of the High Speed Links programme, you will contribute to radiation-tolerant optical communication systems that combine custom ASICs, silicon photonics, optical modules, and FPGA platforms to enable reliable high-speed data transmission in extreme environments. We are seeking an Analogue/Custom IC Design Engineer to design and validate advanced communication ASICs and high-speed CMOS circuits for particle physics detectors. The role involves taking cutting-edge technologies from prototype development through to full system demonstrators.

Your responsibilities

Study and define architectures for analogue and mixed-signal circuits that enable high-speed communication systems using silicon photonics.
Design and verify CMOS circuit blocks such as clock and data recovery (CDR) circuits, high speed clock distribution networks and high-speed analogue-to-digital converters (ADCs).
Perform laboratory testing, characterisation, and validation of circuits.
Carry out radiation qualification (single-event effects and total ionising dose) of manufactured devices.

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Your profile

A strong background in digital and analogue electronics, ideally in an IC design environment.
Familiarity with clock generation and distribution, including fundamentals of DLL, PLL, and CDR circuits.
The ability to solve engineering problems using a variety of analysis and simulation methods.
Hands-on experience in the design, testing and debugging of electronic circuits.
A strong team player who can also work independently.
Your studies focused on Electronics Engineering.

Your skills

Design, simulation and layout of CMOS integrated circuits using Cadence Virtuoso.
Working knowledge of physical verification flows (DRC, LVS, PEX) using Siemens Calibre or Cadence PVS.
Knowledge of at least one of the following: optical receiver circuits, high data rate drivers (wireline, laser and/or external modulators), PLL and CDR design, TIA, ADC and DAC design, control systems.
Working knowledge of at least one programming, scripting, or data analysis language (e.g., Python, Bash, MATLAB).
Experience with electromagnetics (EM) simulation tools (e.g., Ansys HFSS, Simulia CST) is considered a plus.
Spoken and written English, with a commitment to learn French.

Ideal start date: 01/08/2026

Contract duration (in months): 24

Job flexibility: Hybrid

Employment conditions

Work during nights, Sundays and official holidays.
Work in Radiation Areas.

Global Benefits at CERN

A monthly net stipend between 6372-7004 Swiss Francs per month depending on your degree.
30 days of paid leave per year plus 2 weeks annual closure.
Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
Family, child and infant monthly allowances depending on your individual circumstances.
A relocation package (installation grant and travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 36 months.
On-the-job and formal training including language classes.

Let's get you ready

Be sure to meet the eligibility criteria

You are a national of a CERN Member State or Associate Member State. Currently, we cannot consider applications from Pakistani and Lithuanian nationals for positions with a 2026 start date, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.
By the application deadline, you have a master’s degree with 2 to 6 years of professional experience since graduation or a PhD with a maximum of 3 years of professional experience since graduation. You are not eligible with only a bachelor’s degree.
You have never had a CERN fellow or graduate contract before.
Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

Your CV (English or French)
A copy of your most relevant diploma or a certificate of achievement from your school (if you don't yet have your paper diploma)
Any document you consider relevant to your application

Your CERNDepartment

The EP department conducts research in experimental particle physics in close collaboration with and supporting the wider scientific community working at CERN. This includes designing and operating experiments, developing and constructing detectors, acquiring and analysing physics data.

Overview of CERN

Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

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Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.