Senior Software Engineer

Responsibilities:

• Design and build Java (Spring Boot 3 x) microservices following hexagonal architecture, with clean domain logic isolated from MongoDB, PostgreSQL, Cosmos DB, and Kafka adapter implementations.
• Develop and maintain REST APIs, Kafka event consumers/producers, and domain service logic for campaign, scoring, attribution, and customer profile workflows.
• Build and manage MongoDB document schemas and PostgreSQL relational schemas for high-throughput, multi-tenant use cases.
• Implement Cosmos DB data models for event and state storage with appropriate partition key and consistency strategies.
• Take end-to-end ownership of components from domain design and hexagonal adapter implementation through deployment and ongoing optimization.
• Integrate with Elasticsearch for campaign search, customer lookup, and full-text query workloads.
• Configure and tune Redis or Aerospike for frequency cap enforcement, scoring cache, and session state management.
• Identify and resolve performance bottlenecks across services, event pipelines, and data layers.
• Participate actively in design discussions, architecture decisions, and code reviews.
• Mentor junior engineers and act as a role model for code quality, hexagonal design, and innovative engineering best practices.

Requirements:

• 5+ years of backend engineering experience; bachelor's or master's degree in computer science or a related field.
• Strong Java 21 and Spring Boot 3 x expertise; solid grasp of hexagonal architecture and clean domain modeling.
• Experience with Kafka: consumer/producer patterns, at-least-once delivery, idempotent processing, and event-driven service design.
• Hands-on MongoDB experience: document schema design, indexing, aggregation pipelines, and multi-tenant isolation.
• PostgreSQL experience: schema design, query optimization, and migration management.
• Familiarity with Cosmos DB or equivalent distributed key-value / document stores.
• Experience with Elasticsearch for search and analytics workloads.