**Title:** Add Phone Number Masking + VoIP Click-to-Call Integration to Existing CRM **Description:** We already have a working financial CRM platform for managing leads and sales agents. We need a developer to add **phone number masking and click-to-call integration with our VoIP provider (Squaretalk or similar).** **Important:** This is NOT a full CRM build. The platform already exists. Only telephony integration and phone masking is required. **Scope of work:** • Mask lead phone numbers in the UI (agents should not see full numbers) • Implement click-to-call button • Integrate VoIP API (Squaretalk preferred) • When agent clicks call: * System triggers call via API * Agent gets call * Lead gets call * Calls connect (bridge) • Store real numbers securely in backend • Log calls in CRM **Security requirement:** Agents must NOT be able to: • See full phone numbers • Copy numbers • Access numbers via inspect element • Access numbers via API calls **Technical tasks:** • Backend API integration with VoIP • Frontend call button • Phone masking logic • Call event handling • Documentation **Requirements:** • Experience with VoIP integrations (Squaretalk, Twilio, Plivo, etc.) • Backend development experience • API integration experience • Security best practices **Nice to have:** • Squaretalk API experience • CRM experience • Call tracking experience **To apply answer:** 1. Which VoIP systems have you integrated? 2. Have you implemented click-to-call before? 3. Estimated hours required? 4. Tech stack you will use? **Project size:** Small-medium integration project. **Start:** Immediate.