Backend Developer – Webhook & Preference Sync (Offshore)

Backend Developer – Webhook & Preference Sync (Offshore) 

Role Type: Full-Time | Offshore [Chennai] 

Role Summary 

This role focuses on implementing webhook ingestion, HMAC verification, publishing vendor callbacks to Pub/Sub, and supporting preference synchronization across Listrak, MDM, and internal systems. 

Key Responsibilities 

• Build secure webhook receivers with signature validation and request authentication. 
• Publish vendor delivery, engagement, and opt-out events into Pub/Sub topics. 
• Archive raw webhook payloads to Cloud Storage for auditing. 
• Implement preference synchronization logic for email/SMS consent updates. 
• Integrate with internal preference, profile, and MDM services. 
• Handle retries, DLQ, and graceful degradation during vendor outages. 

Required Skills & Experience 

• 3–5 years backend engineering experience. 
• Experience developing webhook-based integrations. 
• Familiarity with Pub/Sub, schema-based payloads, and secure API patterns. 
• Understanding of HTTP security concepts (HMAC, TLS, replay protection). 

Preferred 

• Experience with preference/consent systems or ESP callback handling.