diff --git a/packages/api/src/crm/deal/services/leadsquared/index.ts b/packages/api/src/crm/deal/services/leadsquared/index.ts
new file mode 100644
index 000000000..b81aac615
--- /dev/null
+++ b/packages/api/src/crm/deal/services/leadsquared/index.ts
@@ -0,0 +1,117 @@
+import { Injectable } from '@nestjs/common';
+import { IDealService } from '@crm/deal/types';
+import { CrmObject } from '@crm/@lib/@types';
+import { LeadSquaredDealInput, LeadSquaredDealOutput } from './types';
+import axios from 'axios';
+import { PrismaService } from '@@core/@core-services/prisma/prisma.service';
+import { LoggerService } from '@@core/@core-services/logger/logger.service';
+import { ActionType, handle3rdPartyServiceError } from '@@core/utils/errors';
+import { EncryptionService } from '@@core/@core-services/encryption/encryption.service';
+import { ApiResponse } from '@@core/utils/types';
+import { ServiceRegistry } from '../registry.service';
+import { SyncParam } from '@@core/utils/types/interface';
+
+@Injectable()
+export class LeadSquaredService implements IDealService {
+  constructor(
+    private prisma: PrismaService,
+    private logger: LoggerService,
+    private cryptoService: EncryptionService,
+    private registry: ServiceRegistry,
+  ) {
+    this.logger.setContext(
+      CrmObject.deal.toUpperCase() + ':' + LeadSquaredService.name,
+    );
+    this.registry.registerService('leadsquared', this);
+  }
+
+  async addDeal(
+    dealData: LeadSquaredDealInput,
+    linkedUserId: string,
+  ): Promise<ApiResponse<LeadSquaredDealOutput>> {
+    try {
+      const connection = await this.prisma.connections.findFirst({
+        where: {
+          id_linked_user: linkedUserId,
+          provider_slug: 'leadsquared',
+          vertical: 'crm',
+        },
+      });
+      const resp = await axios.post(
+        `${connection.account_url}/v2/OpportunityManagement.svc/Capture`,
+        dealData,
+        {
+          headers: {
+            'Content-Type': 'application/json',
+            'x-LSQ-AccessKey': this.cryptoService.decrypt(
+              connection.access_token,
+            ),
+            'x-LSQ-SecretKey': this.cryptoService.decrypt(
+              connection.secret_token,
+            ),
+          },
+        },
+      );
+      const opportunityId = resp.data.CreatedOpportunityId;
+      const opportunityResp = await axios.get(
+        `${connection.account_url}/v2/OpportunityManagement.svc/GetOpportunityDetails?OpportunityId=${opportunityId}`,
+        {
+          headers: {
+            'x-LSQ-AccessKey': this.cryptoService.decrypt(
+              connection.access_token,
+            ),
+            'x-LSQ-SecretKey': this.cryptoService.decrypt(
+              connection.secret_token,
+            ),
+          },
+        },
+      );
+      return {
+        data: opportunityResp.data,
+        message: 'Leadsquared deal created',
+        statusCode: 201,
+      };
+    } catch (error) {
+      throw error;
+    }
+  }
+
+  async sync(data: SyncParam): Promise<ApiResponse<LeadSquaredDealOutput[]>> {
+    try {
+      // TODO: I'm not sure about this
+      const { linkedUserId, leadId, opportunityType } = data;
+      const connection = await this.prisma.connections.findFirst({
+        where: {
+          id_linked_user: linkedUserId,
+          provider_slug: 'pipedrive',
+          vertical: 'crm',
+        },
+      });
+      let url = `${connection.account_url}/v2/OpportunityManagement.svc/GetOpportunitiesOfLead?leadId=${leadId}`;
+
+      if (opportunityType) {
+        url += `&opportunityType=${opportunityType}`;
+      }
+
+      const resp = await axios.post(url, {
+        headers: {
+          'Content-Type': 'application/json',
+          'x-LSQ-AccessKey': this.cryptoService.decrypt(
+            connection.access_token,
+          ),
+          'x-LSQ-SecretKey': this.cryptoService.decrypt(
+            connection.secret_token,
+          ),
+        },
+      });
+
+      return {
+        data: resp.data['List'],
+        message: 'Leadsquared deals retrieved',
+        statusCode: 200,
+      };
+    } catch (error) {
+      throw error;
+    }
+  }
+}
diff --git a/packages/api/src/crm/deal/services/leadsquared/mappers.ts b/packages/api/src/crm/deal/services/leadsquared/mappers.ts
new file mode 100644
index 000000000..8e6d3c0ad
--- /dev/null
+++ b/packages/api/src/crm/deal/services/leadsquared/mappers.ts
@@ -0,0 +1,147 @@
+import { LeadSquaredDealInput, LeadSquaredDealOutput } from './types';
+import {
+  UnifiedCrmDealInput,
+  UnifiedCrmDealOutput,
+} from '@crm/deal/types/model.unified';
+import { IDealMapper } from '@crm/deal/types';
+import { Utils } from '@crm/@lib/@utils';
+import { MappersRegistry } from '@@core/@core-services/registries/mappers.registry';
+import { Injectable } from '@nestjs/common';
+import { IngestDataService } from '@@core/@core-services/unification/ingest-data.service';
+import { CrmObject } from '@crm/@lib/@types';
+import { UnifiedCrmStageOutput } from '@crm/stage/types/model.unified';
+import { ZohoStageOutput } from '@crm/stage/services/zoho/types';
+
+@Injectable()
+export class LeadSquaredDealMapper implements IDealMapper {
+  constructor(
+    private mappersRegistry: MappersRegistry,
+    private utils: Utils,
+    private ingestService: IngestDataService,
+  ) {
+    this.mappersRegistry.registerService('crm', 'deal', 'leadsquared', this);
+  }
+  async desunify(
+    source: UnifiedCrmDealInput,
+    customFieldMappings?: {
+      slug: string;
+      remote_id: string;
+    }[],
+  ): Promise<LeadSquaredDealInput> {
+    const result: LeadSquaredDealInput = {
+      OpportunityNote: source.description,
+      OpportunityName: source.name,
+      Amount: source.amount ?? 0,
+    };
+    if (source.company_id) {
+      result.Account_Name = {
+        id: await this.utils.getRemoteIdFromCompanyUuid(source.company_id),
+        name: await this.utils.getCompanyNameFromUuid(source.company_id),
+      };
+    }
+    if (source.stage_id) {
+      result.Stage = await this.utils.getStageNameFromStageUuid(
+        source.stage_id,
+      );
+    }
+    if (source.user_id) {
+      result.Owner = {
+        id: await this.utils.getRemoteIdFromUserUuid(source.user_id),
+      } as any;
+    }
+
+    if (customFieldMappings && source.field_mappings) {
+      for (const [k, v] of Object.entries(source.field_mappings)) {
+        const mapping = customFieldMappings.find(
+          (mapping) => mapping.slug === k,
+        );
+        if (mapping) {
+          result[mapping.remote_id] = v;
+        }
+      }
+    }
+
+    return result;
+  }
+
+  async unify(
+    source: LeadSquaredDealOutput | LeadSquaredDealOutput[],
+    connectionId: string,
+    customFieldMappings?: {
+      slug: string;
+      remote_id: string;
+    }[],
+  ): Promise<UnifiedCrmDealOutput | UnifiedCrmDealOutput[]> {
+    if (!Array.isArray(source)) {
+      return await this.mapSingleDealToUnified(
+        source,
+        connectionId,
+        customFieldMappings,
+      );
+    }
+
+    return Promise.all(
+      source.map((deal) =>
+        this.mapSingleDealToUnified(deal, connectionId, customFieldMappings),
+      ),
+    );
+  }
+
+  private async mapSingleDealToUnified(
+    deal: LeadSquaredDealOutput,
+    connectionId: string,
+    customFieldMappings?: {
+      slug: string;
+      remote_id: string;
+    }[],
+  ): Promise<UnifiedCrmDealOutput> {
+    const field_mappings: { [key: string]: any } = {};
+    if (customFieldMappings) {
+      for (const mapping of customFieldMappings) {
+        field_mappings[mapping.slug] = deal[mapping.remote_id];
+      }
+    }
+    const res: UnifiedCrmDealOutput = {
+      remote_id: deal.OpportunityId,
+      remote_data: deal,
+      name: deal.OpportunityNote,
+      description: deal.OpportunityNote ?? '', // todo null
+      amount: deal.Amount,
+      field_mappings,
+    };
+
+    if (deal.Stage) {
+      // we insert right way inside our db as there are no endpoint to do so in the Zoho api
+      const stage = await this.ingestService.ingestData<
+        UnifiedCrmStageOutput,
+        ZohoStageOutput
+      >(
+        [
+          {
+            Stage_Name: deal.Stage,
+          },
+        ],
+        'leadsquared',
+        connectionId,
+        'crm',
+        CrmObject.stage,
+        [],
+      );
+      res.stage_id = stage[0].id_crm_deals_stage;
+    }
+
+    if (deal.ProspectId) {
+      res.user_id = await this.utils.getUserUuidFromRemoteId(
+        deal.ProspectId,
+        connectionId,
+      );
+    }
+    if (deal.LeadOwner) {
+      res.company_id = await this.utils.getCompanyUuidFromRemoteId(
+        deal.LeadOwner,
+        connectionId,
+      );
+    }
+    return res;
+  }
+}
diff --git a/packages/api/src/crm/deal/services/leadsquared/types.ts b/packages/api/src/crm/deal/services/leadsquared/types.ts
new file mode 100644
index 000000000..287111e34
--- /dev/null
+++ b/packages/api/src/crm/deal/services/leadsquared/types.ts
@@ -0,0 +1,52 @@
+type LeadDetail = {
+  Attribute: string;
+  Value: string;
+};
+// If comments are enabled on opportunity status change, you must pass the mx_Custom_19 (of datatype ‘String’)
+type Field = {
+  SchemaName: string;
+  Value: string;
+};
+
+type Opportunity = {
+  Filelds: Field[];
+  OpportunityEventCode: number;
+  OpportunityNote?: string;
+  OpportunityDateTime?: string; //date and time is in the yyyy-mm-dd hh:mm:ss format.
+  OverwriteFields?: boolean;
+  UpdateEmptyFields?: boolean;
+  DoNotPostDuplicateActivity?: boolean;
+  DoNotChangeOwner?: boolean;
+};
+
+export type LeadSquaredDealInput = {
+  LeadDetails: LeadDetail[]; // atleast 1 unique field is required. Attribute 'SearchBy' is required
+  Opportunity: Opportunity;
+};
+
+export type LeadSquaredDealOutput = {
+  ProspectId: string;
+  FirstName: string;
+  LastName: string;
+  EmailAddress: string;
+  Phone: string;
+  DoNotCall: '0' | '1';
+  DoNotEmail: '0' | '1';
+  LeadName: string;
+  LeadOwner: string;
+  OpportunityEventType: string;
+  OpportunityEvent: string;
+  OpportunityNote: string;
+  Score: string;
+  PACreatedOn: string; //'2020-09-16 05:43:00';
+  PAModifiedOn: string; //'2020-09-16 07:26:09';
+  IP_Latitude: string | null;
+  IP_Longitude: string | null;
+  PACreatedByName: string;
+  Status: string;
+  Owner: string;
+  OwnerName: string;
+  OpportunityId: string;
+  Total: string;
+  [key: string]: string | number | null;
+};