Senior Java Developer- Assistant Vice President

Citigroup Inc.; Mississauga; On-site; CAD 132,000 - 197,000; Full time

Job summary

Citigroup Inc. is seeking a Senior Java Developer to architect and optimize high-throughput data pipelines for clickstream and user interaction data across multiple analytics databases.

You will design config-driven microservices with Spring Boot, integrate Kafka, implement REST APIs, and champion AI-assisted development to accelerate velocity and code quality while ensuring reliability and regulatory alignment.

Qualifications

• 7+ years of professional Java development experience.
• Expertise in Spring Boot and microservices architecture.
• Proficiency in Oracle SQL/PLSQL and database optimization.
• Hands-on Apache Kafka experience for pub/sub and streams.
• Experience with caching (Redis or equivalent).
• Ability to leverage Generative AI tools to boost productivity.
• Knowledge of real-time data processing and data pipelines.
• Understanding of distributed systems, concurrency, and performance tuning.

Responsibilities

• Design, develop, and maintain high-performance Java applications for processing clickstream data in real time or batch.
• Implement config-driven, Spring-based components for data ingestion, transformation, and enrichment.
• Develop and optimize REST APIs for integration with internal systems, and external applications.
• Integrate and manage Apache Kafka for high-throughput, low-latency event streaming.
• Write optimized Oracle SQL/PLSQL for configuration management.
• Leverage continuous integration pipelines to streamline development and deployment.
• Use Generative AI development tools to write, review, and optimize code efficiently.
• Collaborate with business analysts, product team and developers to ensure system reliability, scalability, and alignment with regulatory requirements.

Skills

Java

Spring Boot

Oracle Database

Apache Kafka

Redis

Generative AI

Real-time processing

Distributed systems

Education

Bachelor's or Master’s in CS/Engineering

Job description

Job Specification – Senior Java Developer

We are seeking an experienced Senior Java Developer to join our Digital Data & Analytics engineering team. In this role, you will be responsible for architecting, building, and optimizing high-throughput, low-latency real-time and batch data pipelines that ingest, process, and distribute clickstream and user interaction data across multiple analytics databases and downstream platforms.

You will design configuration-driven microservices, integrate distributed messaging systems using Apache Kafka, implement caching layers, and develop robust REST APIs. Additionally, you will champion modern development workflows by leveraging Generative AI coding assistants (e.g., GitHub Copilot, Devin) to accelerate engineering velocity, drive code quality, and maintain high standards of testing and system resilience.

Key Responsibilities

• Design, develop, and maintain high-performance Java applications for processing clickstream data in real time or batch.
• Implement config-driven, Spring-based components for data ingestion, transformation, and enrichment.
• Develop and optimize REST APIs for integration with internal systems, and external applications.
• Integrate and manage Apache Kafka for high-throughput, low-latency event streaming.
• Write optimized Oracle SQL/PLSQL for configuration management.
• Leverage continuous integration pipelines to streamline development and deployment.
• Use Generative AI development tools (e.g., Devin, Copilot, etc) to write, review, and optimize code efficiently.
• Collaborate with business analysts, product team and developers to ensure system reliability, scalability, and alignment with regulatory requirements.

Required Skills & Experience

• 7+ years of professional experience in Java application development.
• Expertise in Spring Boot and microservices architecture.
• Proficiency in Oracle Database (SQL, PL/SQL, optimization).
• Hands-on experience with Apache Kafka (publish/subscribe, streams, scalability)
• Experience with caching frameworks (Redis or equivalent).
• Ability to effectively leverage Generative AI coding assistants for improved development productivity.
• Knowledge of real-time data processing and data pipeline design.
• Understanding of distributed systems, concurrency, and performance tuning.

Soft Skills

• Strong problem-solving and analytical skills.
• Excellent communication and ability to work across global teams.
• Proven ability to collaborate under the guidance of other lead developers
• Ownership mindset with a focus on delivering high‑quality solutions.

Education

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Primary Location Full Time Salary Range:

$94300,00 - $141500,00

Most Relevant Skills

Please see the requirements listed above.

Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision‑making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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