Update index.md

Author: Celiaioulain

content/join-us/2025-09-02-Engineer/index.md

@@ -13,6 +13,9 @@ links:
 
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+# THIS POSITION HAS BEEN FILLED.
+However, please feel free to send us your CV at [email protected], so we can contact you if an opportunity matching your profile becomes available.
+
 # 🚀 Job Offer: C++/HPC Engineer – MLIR / JAX / Pytorch / Kokkos
 
 ## 🧭 Context