Back End Developer

Photon ( is a fast growing global technology company, leading the industry in Digital Transformation for Enterprise. Photon is known for creating amazing mobile-first digital customer experiences and designs; and delivers technical expertise across all levels of corporate infrastructure.

Note: Work from Office (All 5 days)

Backend Developer Webhook & Preference Sync

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

• 36 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).
• Experience in e-commerce/retail domain

Preferred

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