Full-Time
Assistant/e Administratif/ve et Commercial/e
f/h
Posted on 8/19/2026
ALTEREA
11-50 employees
Energy engineering for buildings and cities
No salary listed
Île-de-France, France
In Person
Bachelor's
 Administrative & Executive Assistance (1) |
|---|
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- A minimum of four years of experience as an administrative and commercial assistant, ideally within a technical engineering consultancy, general contracting company, or architecture firm.
- A bac+2 degree.
- Proficiency in Microsoft Office, including Outlook, Word, and Excel.
- Technical understanding of projects.
- Persistence and resilience.
- Rigor and proactivity.
- Monitor commercial calls for tenders in line with the company’s development objectives.
- Collaborate on responses to calls for tenders and application files across France, working with commercial engineers.
- Draft and compile administrative files, including collecting contractual documents, preparing team résumés, and tracking and creating references.
- Manage incoming inter-regional requests.
- Represent and uphold the company’s values while considering client needs in all assignments.
- Propose methods, tools, and processes to improve quality and productivity.
- Previous experience in an administrative and commercial assistant role within a technical engineering consultancy, general contracting company, or architecture firm.
ALTEREA is an energy engineering firm that helps clients manage the energy, environmental, and digital transition of buildings and territories. It offers consulting, studies, project management assistance (AMO), and project management (MOE) to improve energy and environmental performance, covering audits, design, supervision of work, and project acceptance for renovations, asset optimization, and new construction. The company operates from Nantes with eight agencies across France and more than 400 employees, and is part of the ALTYN group, which provides end-to-end support through ten specialized companies. Since 2022, ALTEREA has been a mission-led company focused on contributing to the energy, environmental, and digital transition of buildings, cities, and territories.
Company Size
11-50
Company Stage
Growth Equity (Venture Capital)
Total Funding
$5.5M
Headquarters
Nantes, France
Founded
1999
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Simplify's Take
What believers are saying
- ALTEREA has 400-plus employees across eight French agencies, strengthening local execution.
- Since July 2022, mission-company status sharpens credibility with climate-focused clients.
- Its 2026 push into resilience and climate adaptation opens higher-value retrofit work.
What critics are saying
- The 2026 reorganization can disrupt delivery and accountability until end-2026.
- Five regional directions and sixteen autonomous agencies create margin leakage and duplicated overhead.
- Public-housing and public-sector demand exposes revenues to procurement delays and budget cuts.
What makes ALTEREA unique
- ALTEREA combines consulting, AMO, MOE, and supervision across building lifecycles.
- January 26, 2026 reorganization decentralizes sales and production into five regional directions.
- ALTYN gives ALTEREA access to ten specialized companies across the decarbonization value chain.
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Benefits
Meal Benefits
Remote Work Options
Paid Holidays
Profit Sharing