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ASSYSTEM

Engineering services for design, construction, commissioning

Junior Systems Engineer

Mechanical EngineeringConfirmed live in the last 24 hours
Full-timeLyon, France€35k - €47k /yrIn-person

About the Job

Requirements

  • Have an engineering-school qualification with a specialization in mechanics or processes, or technical-dominant training.
  • Have 2 to 5 years of professional experience.
  • Ideally have initial experience in the nuclear sector and be comfortable with Dossiers de Systèmes Élémentaires (DSE).

Responsibilities

  • Participate in drafting, updating, and analyzing Dossiers de Systèmes Élémentaires (DSE).
  • Contribute to defining and monitoring functional and technical system requirements.
  • Track system evolutions and modifications in coordination with stakeholders.
  • Participate in technical meetings and liaise with project, engineering studies, and business teams.
  • Identify potential inconsistencies or deviations and contribute to resolving them.
  • Ensure traceability of data and requirements throughout the project lifecycle.
  • Contribute to producing and updating technical documentation.

Desired Qualifications

  • Demonstrate rigor, analytical ability, and ease working in a team.
  • Show interest in complex technical environments and the nuclear sector.

About the Company

ASSYSTEM

Engineering services for design, construction, commissioning

Assystem provides engineering services for complex projects, covering design, construction, supervision, commissioning, and operation, with a strong focus on the nuclear and energy sectors. Its approach combines multidisciplinary engineering teams and project-management capabilities to move projects from initial concept through to operation. The company differentiates itself through a long track record, strategic acquisitions (including Alphatem in 1995 and Mactech Energy Group in 2025) and an early public offering in 2013, which have expanded its capabilities and market reach in the energy and nuclear fields. Its goal is to be a leading, reliable partner for clients by delivering end-to-end engineering services and helping them meet safety, performance, and regulatory requirements across the project lifecycle.

Company size
5,001-10,000
Company stage
IPO
Headquarters
Paris, France
Founded
1966

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