Lead Backend Engineer – Notification Hub (Onsite)

Lead Backend Engineer – Notification Hub (Onsite) 
Location: Onsite (Springfield, MO / Dallas, TX) 
Role Type:  W2 

Visa: ,GC

Note: Need only very senior resource who has stronger Coding skills. Preferred work location- Springfield, MO

Role Summary (JD Should match 100%)
O’Reilly Auto Parts is modernizing its customer messaging ecosystem through a centralized Notification Hub built on Google Cloud Platform (Google Cloud Platform). The Lead Backend Engineer will drive the architecture and development of this platform, overseeing GKE-based microservices, Pub/Sub event workflows, Avro schema governance, secure webhook processing, vendor integrations, and preference synchronization. This role sets the technical direction and ensures platform scalability, resilience, and extensibility. 

Key Responsibilities 
  •  Lead design and development of Notification Hub services: Notification Router, Webhook Receiver, Preference Sync, and related components. 
  •  Architect and maintain event-driven pipelines using Google Pub/Sub with concurrency, retry/DLQ, idempotency, and backpressure handling. 
  •  Define and govern Avro schemas for all event types (order, cart, preference, profile). 
  •  Develop and evolve the vendor-agnostic adapter layer for messaging providers (Listrak today; Iterable/Braze/etc. future). 
  •  Oversee secure webhook ingestion through Apigee → GKE with HMAC validation and rate limiting. 
  •  Enforce zero-trust security using IAM, Workload Identity, and least-privilege access. 
  •  Drive platform-level observability: logs, metrics, distributed tracing, and event audits. 
  •  Collaborate with Digital, Loyalty, CRM, MDM, Architecture, and Infrastructure teams. 
  •  Provide technical leadership to offshore Senior Developers, Developers, and QA/Automation. 
  •  Participate in architecture reviews, capacity planning (4M monthly events), and production operations. 

Required Skills & Experience 
  •  10 years backend engineering; 5 years implementing event-driven architectures. 
  •  Strong expertise in Java, Spring Boot, microservices, and distributed systems. 
  •  Hands-on experience with GKE/Kubernetes, Pub/Sub or Kafka, and cloud-native design. 
  •  Experience with Avro, Protobuf, or schema-based payload governance. 
  •  Strong integration experience with external APIs (MarTech, CRM, MDM, or messaging systems). 
  •  Understanding of IAM, secure webhook handling, and zero-trust principles. 
  •  Experience implementing observability frameworks across microservices. 
Preferred Qualifications 
  •  Experience building or operating large-scale notification, messaging, or orchestration platforms. 
  •  Exposure to ESPs (Listrak, Braze, Iterable, SFMC, Adobe Campaign). 
  •  Experience with hybrid on-prem → cloud event ingestion models.