DEF: Detailed Company Information & Corporate Profile
Contact top employees from
DEF
Summary
The business currently specializes in Security and Investigations area. The company has 500-1000 employees. Register with SignalHire to connect with DEF employees and management.
| DEF Website | def-online.com |
| Social Links |   |
| Phone Number | +33 325810528 |
| Industries | |
| DEF Headquarters address | Parc d'activités du Moulin de Massy, MASSY, Essonne, 91300 FR |
| Company Size | 500-1000 employees |
| Specialties | SECURITE INCENDIE, DETECTION INCENDIE, SECURITE |
| Founded | 1958 |
| Estimated Annual Revenue | $500M - 1B |
| Updated: | 2026-08-04 |
Subsidiaries and Affiliated Companies
Workforce Turnover
Number of employees switched from or switched to
Total employee turnover
Length of Employment
DEF's workforce includes employees across a wide range of tenure levels.
3% have been with the company for less than 1 year6% have been with the company for 1 to 2 years9% have been with the company for 3 to 4 years6% have been with the company for 5 to 7 years16% have been with the company for 8 to 10 years61% have been with the company for more than 11 yearsContact top employees from
DEF
Tri TrinhNet
Henry Wuabc
Zeze Zephirin WahiCommercial Travaux neufs et Maintenance
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Yoann SeignerOperations Manager DEF Shenzhen
ferchichi ahmedTechnicien étude projets
khaloufi takwaIngénieur d’études
Makar GafarovCo-Founder, Team lead
Ismail macanabc
K EDJA BERENGER KOUAMESuperviseur /Technicien
Richard YeoTechnicien travaux neufs
Md EftySEO Specialist
Guadalupe AcostaServicio de atención al cliente
Plesse Ange Delaure GUETechnicien maintenance
Roberto Fernando Velazco VargasProductor de música
Companies Similar to DEF
DEF Corporate Information: FAQ
DEF operates in the Private Security, Electronics Fabrication industries. More details can be found on the official website: def-online.com.
DEF has offices located in MASSY, FR.
The headquarters of DEF are located in MASSY, France.
You can contact DEF by phone at +33 325810528.
DEF currently employs 500-1000 people.
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