diff --git a/thanasoft-front/src/services/index.ts b/thanasoft-front/src/services/index.ts
index c90087e..cceb8b6 100644
--- a/thanasoft-front/src/services/index.ts
+++ b/thanasoft-front/src/services/index.ts
@@ -1,3 +1,4 @@
 export * from "./http";
 export { default as AuthService } from "./auth";
 export { default as WebmailService } from "./webmail";
+export { default as SousTraitantService } from "./sousTraitant";
diff --git a/thanasoft-front/src/services/sousTraitant.ts b/thanasoft-front/src/services/sousTraitant.ts
new file mode 100644
index 0000000..e9387fa
--- /dev/null
+++ b/thanasoft-front/src/services/sousTraitant.ts
@@ -0,0 +1,189 @@
+import { request } from "./http";
+
+export type SousTraitantStatut = "actif" | "inactif" | "en_evaluation";
+
+export interface SousTraitant {
+  id: number;
+  nom_entreprise: string;
+  siret: string | null;
+  forme_juridique: string | null;
+  code_ape: string | null;
+  adresse: string | null;
+  contact_principal: string;
+  telephone: string | null;
+  email: string | null;
+  site_web: string | null;
+  numero_contrat: string | null;
+  montant_contrat: string | number | null;
+  date_debut_contrat: string | null;
+  date_fin_contrat: string | null;
+  type_prestation: string | null;
+  conditions_paiement: string | null;
+  statut: SousTraitantStatut;
+  note_qualite: string | number | null;
+  certifications_labels: string[];
+  created_at: string;
+  updated_at: string;
+}
+
+export interface SousTraitantListResponse {
+  data: SousTraitant[];
+  meta?: {
+    current_page: number;
+    last_page: number;
+    per_page: number;
+    total: number;
+    from?: number;
+    to?: number;
+    stats?: {
+      actif: number;
+      inactif: number;
+      en_evaluation: number;
+    };
+  };
+}
+
+export interface SousTraitantResponse {
+  data: SousTraitant;
+}
+
+export interface CreateSousTraitantPayload {
+  nom_entreprise: string;
+  siret?: string | null;
+  forme_juridique?: string | null;
+  code_ape?: string | null;
+  adresse?: string | null;
+  contact_principal: string;
+  telephone?: string | null;
+  email?: string | null;
+  site_web?: string | null;
+  numero_contrat?: string | null;
+  montant_contrat?: number | string | null;
+  date_debut_contrat?: string | null;
+  date_fin_contrat?: string | null;
+  type_prestation?: string | null;
+  conditions_paiement?: string | null;
+  statut?: SousTraitantStatut;
+  note_qualite?: number | string | null;
+  certifications_labels?: string[];
+}
+
+export interface UpdateSousTraitantPayload
+  extends Partial<CreateSousTraitantPayload> {
+  id: number;
+}
+
+export const SousTraitantService = {
+  async getAllSousTraitants(params?: {
+    page?: number;
+    per_page?: number;
+    search?: string;
+    statut?: SousTraitantStatut;
+    sort_by?: string;
+    sort_direction?: "asc" | "desc";
+  }): Promise<SousTraitantListResponse> {
+    const response = await request<SousTraitantListResponse>({
+      url: "/api/sous-traitants",
+      method: "get",
+      params,
+    });
+
+    return response;
+  },
+
+  async getSousTraitant(id: number): Promise<SousTraitantResponse> {
+    const response = await request<SousTraitantResponse>({
+      url: `/api/sous-traitants/${id}`,
+      method: "get",
+    });
+
+    return response;
+  },
+
+  async createSousTraitant(
+    payload: CreateSousTraitantPayload
+  ): Promise<SousTraitantResponse> {
+    const formattedPayload = this.transformSousTraitantPayload(payload);
+
+    const response = await request<SousTraitantResponse>({
+      url: "/api/sous-traitants",
+      method: "post",
+      data: formattedPayload,
+    });
+
+    return response;
+  },
+
+  async updateSousTraitant(
+    payload: UpdateSousTraitantPayload
+  ): Promise<SousTraitantResponse> {
+    const { id, ...updateData } = payload;
+    const formattedPayload = this.transformSousTraitantPayload(updateData);
+
+    const response = await request<SousTraitantResponse>({
+      url: `/api/sous-traitants/${id}`,
+      method: "put",
+      data: formattedPayload,
+    });
+
+    return response;
+  },
+
+  async deleteSousTraitant(
+    id: number
+  ): Promise<{ success?: boolean; message: string }> {
+    const response = await request<{ success?: boolean; message: string }>({
+      url: `/api/sous-traitants/${id}`,
+      method: "delete",
+    });
+
+    return response;
+  },
+
+  transformSousTraitantPayload(
+    payload: Partial<CreateSousTraitantPayload>
+  ): Record<string, unknown> {
+    const transformed: Record<string, unknown> = { ...payload };
+
+    if (
+      Array.isArray(transformed.certifications_labels) &&
+      transformed.certifications_labels.length > 0
+    ) {
+      transformed.certifications_labels = transformed.certifications_labels
+        .map((item) => (typeof item === "string" ? item.trim() : item))
+        .filter(Boolean);
+    }
+
+    Object.keys(transformed).forEach((key) => {
+      if (transformed[key] === undefined) {
+        delete transformed[key];
+      }
+    });
+
+    return transformed;
+  },
+
+  async searchSousTraitants(
+    query: string,
+    params?: {
+      exact_match?: boolean;
+    }
+  ): Promise<SousTraitant[]> {
+    const response = await request<{
+      data: SousTraitant[];
+      count: number;
+      message: string;
+    }>({
+      url: "/api/sous-traitants/searchBy",
+      method: "get",
+      params: {
+        name: query,
+        exact_match: params?.exact_match || false,
+      },
+    });
+
+    return response.data;
+  },
+};
+
+export default SousTraitantService;
diff --git a/thanasoft-front/src/stores/sousTraitantStore.ts b/thanasoft-front/src/stores/sousTraitantStore.ts
new file mode 100644
index 0000000..36a8d26
--- /dev/null
+++ b/thanasoft-front/src/stores/sousTraitantStore.ts
@@ -0,0 +1,345 @@
+import { defineStore } from "pinia";
+import { computed, ref } from "vue";
+import SousTraitantService from "@/services/sousTraitant";
+
+import type {
+  CreateSousTraitantPayload,
+  SousTraitant,
+  SousTraitantStatut,
+  UpdateSousTraitantPayload,
+} from "@/services/sousTraitant";
+
+export const useSousTraitantStore = defineStore("sousTraitant", () => {
+  const sousTraitants = ref<SousTraitant[]>([]);
+  const currentSousTraitant = ref<SousTraitant | null>(null);
+  const loading = ref(false);
+  const error = ref<string | null>(null);
+  const searchResults = ref<SousTraitant[]>([]);
+  const filters = ref<{
+    page: number;
+    per_page: number;
+    search?: string;
+    statut?: SousTraitantStatut;
+    sort_by?: string;
+    sort_direction?: "asc" | "desc";
+  }>({
+    page: 1,
+    per_page: 10,
+    sort_by: "created_at",
+    sort_direction: "desc",
+  });
+
+  const pagination = ref({
+    current_page: 1,
+    last_page: 1,
+    per_page: 10,
+    total: 0,
+    from: 0,
+    to: 0,
+  });
+
+  const allSousTraitants = computed(() => sousTraitants.value);
+  const activeSousTraitants = computed(() =>
+    sousTraitants.value.filter((item) => item.statut === "actif")
+  );
+  const inactiveSousTraitants = computed(() =>
+    sousTraitants.value.filter((item) => item.statut === "inactif")
+  );
+  const evaluatingSousTraitants = computed(() =>
+    sousTraitants.value.filter((item) => item.statut === "en_evaluation")
+  );
+  const isLoading = computed(() => loading.value);
+  const hasError = computed(() => error.value !== null);
+  const getError = computed(() => error.value);
+  const getPagination = computed(() => pagination.value);
+  const getSousTraitantById = computed(() => (id: number) =>
+    sousTraitants.value.find((item) => item.id === id)
+  );
+
+  const setLoading = (isLoading: boolean) => {
+    loading.value = isLoading;
+  };
+
+  const setError = (err: string | null) => {
+    error.value = err;
+  };
+
+  const clearError = () => {
+    error.value = null;
+  };
+
+  const setSousTraitants = (items: SousTraitant[]) => {
+    sousTraitants.value = items;
+  };
+
+  const setCurrentSousTraitant = (item: SousTraitant | null) => {
+    currentSousTraitant.value = item;
+  };
+
+  const setSearchResults = (items: SousTraitant[]) => {
+    searchResults.value = items;
+  };
+
+  const setPagination = (meta: any) => {
+    if (meta) {
+      const getValue = (val: any) => (Array.isArray(val) ? val[0] : val);
+      pagination.value = {
+        current_page: Number(getValue(meta.current_page)) || 1,
+        last_page: Number(getValue(meta.last_page)) || 1,
+        per_page: Number(getValue(meta.per_page)) || 10,
+        total: Number(getValue(meta.total)) || 0,
+        from: Number(getValue(meta.from)) || 0,
+        to: Number(getValue(meta.to)) || 0,
+      };
+
+      filters.value = {
+        ...filters.value,
+        page: pagination.value.current_page,
+        per_page: pagination.value.per_page,
+      };
+    }
+  };
+
+  const setFilters = (params?: {
+    page?: number;
+    per_page?: number;
+    search?: string;
+    statut?: SousTraitantStatut;
+    sort_by?: string;
+    sort_direction?: "asc" | "desc";
+  }) => {
+    filters.value = {
+      ...filters.value,
+      ...params,
+      page: params?.page ?? filters.value.page ?? 1,
+      per_page: params?.per_page ?? filters.value.per_page ?? 10,
+    };
+  };
+
+  const fetchSousTraitants = async (params?: {
+    page?: number;
+    per_page?: number;
+    search?: string;
+    statut?: SousTraitantStatut;
+    sort_by?: string;
+    sort_direction?: "asc" | "desc";
+  }) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      setFilters(params);
+
+      const requestParams = Object.fromEntries(
+        Object.entries(filters.value).filter(
+          ([, value]) => value !== undefined && value !== null && value !== ""
+        )
+      ) as {
+        page?: number;
+        per_page?: number;
+        search?: string;
+        statut?: SousTraitantStatut;
+        sort_by?: string;
+        sort_direction?: "asc" | "desc";
+      };
+
+      const response =
+        await SousTraitantService.getAllSousTraitants(requestParams);
+      setSousTraitants(response.data);
+      if (response.meta) {
+        setPagination(response.meta);
+      }
+      return response;
+    } catch (err: any) {
+      const errorMessage =
+        err.response?.data?.message ||
+        err.message ||
+        "Failed to fetch sous-traitants";
+      setError(errorMessage);
+      throw err;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const fetchSousTraitant = async (id: number) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await SousTraitantService.getSousTraitant(id);
+      setCurrentSousTraitant(response.data);
+      return response.data;
+    } catch (err: any) {
+      const errorMessage =
+        err.response?.data?.message ||
+        err.message ||
+        "Failed to fetch sous-traitant";
+      setError(errorMessage);
+      throw err;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const createSousTraitant = async (payload: CreateSousTraitantPayload) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await SousTraitantService.createSousTraitant(payload);
+      sousTraitants.value.push(response.data);
+      setCurrentSousTraitant(response.data);
+      return response.data;
+    } catch (err: any) {
+      const errorMessage =
+        err.response?.data?.message ||
+        err.message ||
+        "Failed to create sous-traitant";
+      setError(errorMessage);
+      throw err;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const updateSousTraitant = async (payload: UpdateSousTraitantPayload) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await SousTraitantService.updateSousTraitant(payload);
+      const updatedSousTraitant = response.data;
+
+      const index = sousTraitants.value.findIndex(
+        (item) => item.id === updatedSousTraitant.id
+      );
+      if (index !== -1) {
+        sousTraitants.value[index] = updatedSousTraitant;
+      }
+
+      if (
+        currentSousTraitant.value &&
+        currentSousTraitant.value.id === updatedSousTraitant.id
+      ) {
+        setCurrentSousTraitant(updatedSousTraitant);
+      }
+
+      return updatedSousTraitant;
+    } catch (err: any) {
+      const errorMessage =
+        err.response?.data?.message ||
+        err.message ||
+        "Failed to update sous-traitant";
+      setError(errorMessage);
+      throw err;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const deleteSousTraitant = async (id: number) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const response = await SousTraitantService.deleteSousTraitant(id);
+
+      sousTraitants.value = sousTraitants.value.filter((item) => item.id !== id);
+
+      if (currentSousTraitant.value && currentSousTraitant.value.id === id) {
+        setCurrentSousTraitant(null);
+      }
+
+      return response;
+    } catch (err: any) {
+      const errorMessage =
+        err.response?.data?.message ||
+        err.message ||
+        "Failed to delete sous-traitant";
+      setError(errorMessage);
+      throw err;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const searchSousTraitants = async (
+    query: string,
+    exactMatch: boolean = false
+  ) => {
+    setLoading(true);
+    setError(null);
+
+    try {
+      const results = await SousTraitantService.searchSousTraitants(query, {
+        exact_match: exactMatch,
+      });
+      setSearchResults(results);
+      return results;
+    } catch (err) {
+      setError("Erreur lors de la recherche des sous-traitants");
+      console.error("Error searching sous-traitants:", err);
+      setSearchResults([]);
+      throw err;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const clearCurrentSousTraitant = () => {
+    setCurrentSousTraitant(null);
+  };
+
+  const clearStore = () => {
+    sousTraitants.value = [];
+    currentSousTraitant.value = null;
+    searchResults.value = [];
+    error.value = null;
+    pagination.value = {
+      current_page: 1,
+      last_page: 1,
+      per_page: 10,
+      total: 0,
+      from: 0,
+      to: 0,
+    };
+    filters.value = {
+      page: 1,
+      per_page: 10,
+      sort_by: "created_at",
+      sort_direction: "desc",
+    };
+  };
+
+  return {
+    sousTraitants,
+    currentSousTraitant,
+    loading,
+    error,
+    searchResults,
+    filters,
+
+    allSousTraitants,
+    activeSousTraitants,
+    inactiveSousTraitants,
+    evaluatingSousTraitants,
+    isLoading,
+    hasError,
+    getError,
+    getPagination,
+    getSousTraitantById,
+
+    fetchSousTraitants,
+    fetchSousTraitant,
+    createSousTraitant,
+    updateSousTraitant,
+    deleteSousTraitant,
+    searchSousTraitants,
+    clearCurrentSousTraitant,
+    clearStore,
+    clearError,
+  };
+});
+
+export default useSousTraitantStore;