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Apps Dev Tech Lead Analyst (Mississauga)

Company: Citigroup

Location: mississauga, London

Posted: June 16, 2026

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Position Details

Overview

We are seeking a highly skilled and experienced Backend Java Developer to join our dynamic engineering team. The ideal candidate will be responsible for designing, developing, and maintaining scalable, high-performance, and resilient backend services. This role involves working with a modern technology stack focused on asynchronous, event-based microservices, reactive programming, and robust data persistence solutions. A strong commitment to quality through Test-Driven Development (TDD) and comprehensive unit testing is essential. Responsibilities

Design, develop, and deploy asynchronous, event-driven microservices using Java. Implement solutions leveraging Java Lambdas and Reactive Functional Programming paradigms. Work with NoSQL databases, specifically MongoDB, for productive data storage and retrieval. Utilize Elasticsearch for building powerful search and analytics capabilities. Integrate and develop event streaming solutions with Apache Kafka. Ensure hi...