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Open nowPosted 3 days ago

Mechanical Engineer - ATLAS ITk Pixel Detector (EP-DT-EO-2026-222-LD)

CERN55 open roles

Where
Geneva, Switzerland
Work mode
On site
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Your applicationOpen nowMechanical Engineer - ATLAS ITk Pixel Detector (EP-DT-EO-2026-222-LD)CERN · Geneva, Switzerland

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The clock on this job

Early applications get read.

13.7% of postings close within 7 days. Measured by our own scanner across the market. CERN postings stay open a median of 22 days.

Share of postings closed within
  1. 2.3%1 day
  2. 4.8%3 days
  3. 13.7%7 days
  4. 22.1%14 days
  5. 37.6%30 days
  6. 59.1%60 days
This job: posted 3 days ago

CERN median: 22 days open

The posting

Company Description

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature.

Job Description

Introduction

The CERN ATLAS Team plays a major role in the construction of the future silicon ATLAS Inner Tracker (ITk). In particular, the CERN Detector Technologies (DT) team focuses on the realisation of the Pixel Outer Barrel for the ITk. Our activities include the design, prototyping and assembly of the support structures and tooling as well as the final detector integration, installation and testing.

As a mechanical engineer in the CERN-DT Team, you will join the Engineering Office Section (EP-DT-EO) and work closely with personnel from the ATLAS Group (EP-ATL) and the Technical Coordination Team of the ATLAS Experiment on the design, construction and installation of the ATLAS ITk Pixel Outer System.

Functions

  • Design of precision tooling for the integration, testing and installation of the ITk Pixel Outer System Detector, comprising the Outer Barrel, Endcaps and Inner System Support Tube.
  • Design and develop service installation procedures and tooling, including temporary service management solutions for testing of the ITk Pixel Detector.
  • Verify the design of components and tooling according to the relevant standards and best engineering practices, performing both, analytical and numerical calculations.
  • Develop, document and implement tools and procedures for integration and installation of detector components and services.
  • Participate hands-on in the detector integration work in the ATLAS SR1 cleanroom as well as the preparation on surface and in the cavern for the installation.
  • Prepare technical specifications for components and tools, following up their production, acceptance and installation.
  • Support preparation of and participate in the ATLAS ID detector extraction.

Qualifications

Master's degree or equivalent relevant experience in the field of Mechanical or Aerospace Engineering or a related field.

Experience:

  • Proven experience in the design of precision mechanical components and assembly tools for complex systems.
  • Demonstrated experience in the use of CAD software for 3D modelling and management of large assemblies. Proficiency in Catia V5 would be a plus.
  • Demonstrated experience in the production of 2D technical drawings according to the relevant standards for dimensioning and tolerances (e.g. ISO Geometrical Product Specifications, GPS).
  • Proven hands-on experience in the construction and testing of mechanical systems.
  • Demonstrated experience drafting technical specifications, assembly procedures and engineering reports.

The following experience would be an advantage:

  • Assembly of sensitive equipment in a clean room environment.
  • Structural joining techniques, particularly orbital welding.

Technical competencies:

  • Design and analysis of mechanical structures.
  • Production of 2D drawings and 3D models (ISO dimensioning, tolerancing).
  • Integration of mechanical systems.
  • Knowledge and application of numerical modelling in solid mechanics.
  • Knowledge and application of joining techniques, welding.

Behavioural competencies:

  • Achieving Results: delivering high quality work on time and fulfilling expectations.
  • Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements.
  • Working in Teams: building and maintaining constructive and effective work relationships.
  • Managing Self: working well autonomously; taking on activities and tasks without prompting.
  • Solving Problems: adopting a pragmatic approach; understanding the value of adopting generic rather than 'gold -plated' technical solutions.

Language skills:

Spoken and written English, with a commitment to learn French.

Additional Information

Eligibility and closing date:

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States.

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 06.12.2026 at 23:59 CET.

Employment Conditions

Contract type: Limited duration contract (4 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

Working Hours: 40 hours per week

Job Flexibility: Fully Onsite

This position involves:

  • Work in Radiation Areas.
  • Interventions in underground installations.
  • A valid driving licence.
  • Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Job grade: 6-7

Job reference: EP-DT-EO-2026-222-LD

Field of work: Mechanical Engineering

Benchmark Job Title: Mechanical Engineer

Global Benefits

  • A competitive salary (tax free), increasing in line with your years of relevant experience.
  • 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, removal, travel expenses) depending on your individual circumstances.
  • Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

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!

More information about us, here: careers.cern

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