Senior Accountant F/H

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Published on 23/10/2025
  • Contract type:  Temporary contract - 6 months

  • Work time:  Full time

  • Location Rennes

Who are we ?

Founded in 2013, Cailabs designs, manufactures, and develops innovative photonic solutions for the space, industry, telecommunications, and defense sectors. A global specialist in laser shaping, the company has accelerated its growth in the space field with turnkey optical ground stations that integrate atmospheric turbulence compensation technology. This makes it one of the first companies to harness very high data rates enabled by optics in a commercial ground station.

Cailabs currently has 150 employees, including 35 PhDs. With 29 patent families filed, the company is one of the most innovative companies in France. It is headquartered in Rennes, with offices in Paris and Washington (USA).

Job description

Are you passionate about numbers and accounting? 

Would you like to develop your skills in a dynamic environment and a rapidly growing sector?

Join the Finance Department at Cailabs!

As a Senior Accountant, you will play an essential role in the company's accounting management.

Your responsibilities will include: 

Co-supervising the general accounting of Cailabs SAS
Strategic and day-to-day management of the accounting team, working directly with the entire Finance team
Co-supervising monthly and annual account closings, working directly with our chartered accountant and auditors
Organising and co-supervising the accounting team during closings 
Review of reconciliations and controls, clearing of accounts 
In conjunction with Management Control, contribution to the successful completion of analytical reviews (P&L, balance sheet) and ‘actual vs budget’ analyses 
Management of international accounting
Preparation of the accounts for the American subsidiary, in conjunction with our local contact
In conjunction with our chartered accountant, preparation of the 2025 consolidated accounts in accordance with French and IFRS standards
Software transition / Project management 

Active contribution to the transformation of the company's finance function: electronic invoicing, change of accounting software (go-live Microsoft Business Central on 01/01/2026), review and improvement of internal processes (particularly purchasing) 
Internal and statutory audits, taxes
Liaison role for internal and statutory audits
Coordination and liaison with the tax authorities

The assignments will be carried out mainly at our site in La Gare, then on the Route de Lorient.

Six-month fixed-term contract with the possibility of a permanent contract depending on the company's growth.

Essential skills

With a Master's degree in accounting/DSCG, you have at least 5 years' experience in a similar position, as well as in team management.
You have advanced Excel skills.
Previous experience in an industrial environment would be an advantage. 
Knowledge of solutions such as CEGID XRP Flex or Microsoft Business Central would also be an advantage. 
Your main assets for carrying out these tasks will be your leadership, organisational skills, adaptability, responsiveness and curiosity. 
You have good analytical and communication skills. 
By joining Cailabs, you will find: 
The opportunity to participate in an incredible human adventure by working with colleagues who share a strong team identity based on challenge, intellectual emulation and responsiveness. 
The opportunity to join a dynamic structure that combines agility and resources commensurate with its ambitions. 
A company at the cutting edge of technology, from prototype development to industrialisation phases. 
And also: 
Opportunities for sharing and socialising (annual seminars, meals, group games, sports activities, etc.), 
100% coverage of mutual insurance costs, 
A bonus system that rewards collective and individual performance. 

Finally, joining Cailabs is the assurance that everything will be done to help you perform, improve and take on new challenges. 

www.cailabs.com

Réf: f8a539fc-3778-459f-a9a5-b14c2562b1ea

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Senior Accountant F/H

Temporary contract - 6 months
Full time
Rennes

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