Welcome in our universe of expertise and passion !

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years of expertise and development of a true EXPERTISE


sites on the international stage

20 jobs available join us!

Our sectors of activity

SEIMAF is committed to meeting your needs whatever your sector of activity


SEIMAF is recruiting

Get in the Seimaf spirit !



I joined the design office after completing my professional degree and worked in tandem with an experienced designer.
Today, I work independently on the projects entrusted to me.
I also play a part in supporting young graduates joining SEIMAF.

Christian Jehanno

Design Office Manager, Saint-Herblain Branch

Working at SEIMAF has given me the opportunity to learn about different sectors and broaden my knowledge. As a project manager, this has enabled me to satisfy my
appetite for variety by coordinating mechanical,
conveying, general installation and other projects.
I currently manage the Saint-Herblain office, and I won’t get tired of my job any time soon.

With SEIMAF, make your ideas come to life

We regularly recruit talented individuals from the engineering and consulting sectors, with an appetite for success, dedication and good humour! Don't hesitate if you are serious, join us!

Your knowledge, our best asset

Our offers

Layout & MEH CAD Designer

Permanent contract - Full-time -

See offer

CAD Support

Permanent contract - Full-time -

See offer

Business Manager Nucléaire H/F

Permanent contract - Full-time -

See offer
Discover all offers