Senior Back End Developer
Richfield, MN - USA
Job Summary
Position: Senior Back End Developer III - AdTech Focus
Location: Richfield MN (Hybrid - 1-2 days onsite per week preferred; remote considered)
Employment Type: Contract (7-12 Months)
Project Scope
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Enhance seller-facing campaign management workflows.
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Integrate with external advertising platforms (e.g. Criteo) and ad-serving systems.
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Implement reporting spend tracking and billing event pipelines.
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Improve campaign synchronization and product eligibility systems.
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Modernize frontend and backend architecture for scalability and maintainability.
Key Skills & Experience
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7-10 years of backend development experience.
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Strong expertise in Java/Kotlin and Spring Boot/WebFlux.
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Hands-on experience with microservices and REST API development.
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Deep understanding of Kafka and event-driven architecture.
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Knowledge of distributed systems concurrency and asynchronous processing.
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Strong SQL skills with PostgreSQL/MySQL performance optimization.
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Experience with Kubernetes CI/CD and cloud-native applications.
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Production support monitoring and observability expertise.
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Strong debugging problem-solving and cross-team collaboration skills.
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Ability to independently own features/services end-to-end.
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Experience building scalable high-throughput systems.
Bonus Skills:
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AdTech domain experience.
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BigQuery/GCP exposure.
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Reactive programming.
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Familiarity with AI-assisted development tools.
Required Skills:
PostgreSQLJAVA