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Today is: 05-Feb-2026 12:02 GMT

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Project title:	SMS Workflow & API Integration Engineer
Posted by:	External project from PeoplePerHour
Started:	06-Nov-2025 05:20 GMT
Description:	We are looking to hire a SMS Messaging Workflow Engineer (Telnyx / KYC Compliance) to build a compliant automated text messaging system. The system will send an initial consent request text message, wait for the recipient’s reply (YES / NO / STOP), and then automatically send a follow-up message only if consent is granted. All inbound and outbound messages must be logged in a database for audit and compliance purposes. If a recipient replies STOP, the system must permanently block future contact to that phone number. The workflow must be built using Telnyx messaging APIs, secured webhooks, and a PostgreSQL database. The developer will be responsible for creating the message state logic, webhook endpoint, database schema, opt-out handling, and delivery logging required to meet TCPA and consent record-keeping requirements. Code should be clean, well-structured, and documented for internal technical handoff. Responsibilities Develop consent and follow-up SMS workflow using Telnyx Messaging APIs Implement webhook logic to process inbound replies (YES / NO / STOP) Create and deploy a PostgreSQL audit logging system (5+ year retention) Implement permanent opt-out suppression logic Secure all endpoints (HTTPS + Telnyx signature verification) Provide documentation and a simple admin reference for internal staff Required Skills Telnyx SMS / Messaging Profile configuration & webhook handling Backend development in Node.js or Python PostgreSQL schema design, indexing, and encryption practices API security and signature validation Understanding of TCPA consent requirements Preferred Skills (Not Required) Experience with SMS deliverability optimization / A2P 10DLC Docker / DevOps for clean deployment Redis for message state caching (optional) Deliverables Working SMS consent + reminder system deployed to our environment PostgreSQL database with full audit logging Webhook endpoints with opt-out enforcement Clear documentation for internal operation & compliance review
Project ID:	3456865
Project category:
Project budget:
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