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# Senior Back End Developer

- **Company:** Stellar IT Solutions
- **Location:** Richfield, NY, United States
- **Experience:** Expert
- **Salary:** $112,320.0 - $122,720.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), BigQuery, Continuous Integration, Database Queries, Software Debugging, Distributed Systems, PostgreSQL, MySQL, Performance Tuning, Spring Cloud, Concurrency, Spring-boot, Backend, Kotlin, Event Driven Architecture, Kubernetes, Apache Kafka, Reactive Programming, Front End Software Development, Restful APIs, Microservices
- **Published:** May 29, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=7bd4a8fa0f5294ec

## About the Role

Do you have experience in System performance optimization?, * 7-10 years of backend development experience.

 * Strong expertise in Java/Kotlin and Spring Boot/WebFlux.
 * Hands-on experience with microservices and REST API development.
 * Deep understanding of Kafka and event-driven architecture.
 * Knowledge of distributed systems, concurrency, and asynchronous processing.
 * Strong SQL skills with PostgreSQL/MySQL performance optimization.
 * Experience with Kubernetes, CI/CD, and cloud-native applications.
 * Production support, monitoring, and observability expertise.
 * Strong debugging, problem-solving, and cross-team collaboration skills.
 * Ability to independently own features/services end-to-end.
 * Experience building scalable, high-throughput systems.

Bonus Skills:

 * AdTech domain experience.
 * BigQuery/GCP exposure.
 * Reactive programming.
 * Familiarity with AI-assisted development tools.

## Description

* Enhance seller-facing campaign management workflows.
 * Integrate with external advertising platforms (e.g., Criteo) and ad-serving systems.
 * Implement reporting, spend tracking, and billing event pipelines.
 * Improve campaign synchronization and product eligibility systems.
 * Modernize frontend and backend architecture for scalability and maintainability.


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