Senior Integration Engineer (x2+)
Platform Engineering · Data & Martech Integration
ABOUT THE ENGAGEMENT
Avenue Code is seeking a Senior Integration Engineer to join a strategic engagement supporting a large enterprise retail client undergoing a broad marketing technology transformation. You will be part of a lean, senior-weighted engineering team owning the integration layer that connects a modern owned media platform stack — including CDPs, ESPs, and real-time data pipelines — across multiple consumer brands.
This role is central to the team''s mission: owning the engineering plumbing that no one else owns, so that marketing and product teams can focus on experimentation and outcomes rather than infrastructure.
ROLE SUMMARY
The Senior Integration Engineer will design and build the data and API integration layer that powers a unified martech stack. This includes owning CDP activation pipelines, event streaming architecture, and vendor integration health across a complex ecosystem of marketing technology platforms. You will play a critical role in ensuring reliable, high-quality data flows between customer data platforms, activation channels, and analytics systems.
RESPONSIBILITIES
Design and build CDP activation pipelines — including audience feeds, event streaming, and data quality checks between customer data sources and downstream marketing platforms (Nice-to-have)
Own API integration architecture across vendor systems — define contracts, enforce SLAs, and build reliability patterns (circuit breakers, retry logic, dead letter queues)
Implement and maintain event streaming infrastructure using Kafka, Azure Service Bus, or comparable message queue / pub-sub systems
Build and maintain real-time data pipelines supporting audience delivery and experiment results into marketing data lakes
Monitor end-to-end integration health across the martech vendor ecosystem — proactive telemetry, alerting, and incident response
Partner with engineering and product teams to onboard new vendor integrations and manage the technical complexity of platform consolidation
Document integration patterns, data contracts, and API standards for internal developer use
REQUIRED SKILLS & EXPERIENCE
5+ years of integration or backend engineering experience, preferably in martech or data platform contexts
Strong API engineering skills — RESTful design, event-driven architecture, webhook/message queue patterns
Hands-on experience with Kafka, Azure Service Bus, or similar event streaming/pub-sub platforms
Familiarity with vendor integration patterns in martech ecosystems (ESPs, CDPs, tag management, attribution platforms)
Cloud-native development experience — Azure preferred; containerization, infrastructure-as-code (Terraform)
Strong understanding of data contracts, SLA monitoring, and observability practices
NICE TO HAVE
Experience building CDP activation pipelines — Amperity, Segment, or comparable; audience feeds and real-time event streaming
Experience with CDP-to-ESP data feed pipelines (e.g., Amperity to downstream activation platforms)
Familiarity with Google Cloud Platform data lake architectures (BigQuery, Pub/Sub)
Retail or e-commerce domain background
Exposure to feature flag systems or experimentation tracking pipelines
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