Senior Java Developer (AVP)

Citi; New York (NY); Hybrid; USD 95,000 - 135,000; Full time

Benefits offered by this job

27 days annual leave

Private Medical Care

Life Insurance

Employee Assistance Program

Pension Plan

Parental Leave

Employee discounts

Learning and development resources

Job summary

Citi is seeking a Senior Java Developer (AVP) to join its hybrid team in Belfast. You will develop and maintain Java applications, integrate REST APIs with secure authentication, and work across global teams to improve trading platforms.

The role emphasizes modern SDLC practices, performance, scalability, and collaboration, with hybrid work and a competitive benefits package.

Qualifications

• Bachelor's degree in a relevant field.
• Strong Java development experience with REST API & OAuth.
• Experience with messaging systems (Kafka preferred, RabbitMQ, etc.).
• Experience with SQL databases (Oracle, SQL Server, Hadoop).
• Java multithreading/concurrency, Web Services, JMS/MQ, SFTP knowledge.
• Experience in distributed systems and modern SDLC practices.
• Familiarity with containers (Docker, Kubernetes).

Responsibilities

• Platform support and enhancement for trading-related applications.
• Participate in design sessions with cross-location teams.
• Adopt new tools and approaches to improve delivery quality.
• Analyze existing systems and propose architectural improvements.
• Collaborate with stakeholders to shape requirements and design decisions.
• Troubleshoot with production support teams and ensure best practices.
• Provide user documentation and ensure performance/scalability.

Skills

Java development

REST API

OAuth

Multithreading

SQL databases

Web Services

Distributed systems

Containers

Education

Bachelor's degree in Computer Science, Engineering, Information Technology or similar discipline

Tools

Kafka

Nats

Solace

RabbitMQ

Docker

Kubernetes

DB2

SFTP

JMS

MQ

Job description

Senior Java Developer (AVP)

Location(s): Belfast, Northern Ireland, United Kingdom

Job Type: Hybrid

Posted: Aug. 10, 2026

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Project description:

Unity is the global authority for business transactions across Citi, covering transactions across all asset classes in capital markets, commercial payments, account management and more. At its core Unity provides a unique reference that keeps with a transaction for its entire lifetime thereby allowing full traceability from front office to back office providing great business benefit.

This role is for a developer position responsible for accomplishing results through hands on development/bug fixes of our Java application. The overall objective of this role is to drive applications development through programming activities.

Responsibilities

• Platform Support & Enhancement: Build and maintain common solutions for trading platform monitoring, trade reconciliation, application recovery, and other essential support functions.
• Core Development: Participate in design sessions with the development team, both employees and vendors located across multiple locations.
• Agile SDLC pipeline: Evaluate and adopt new development tools, libraries, and approaches to improve delivery quality by aligning with latest industry trends.
• Continuous Improvement: Analyze existing software systems and propose solutions to improve overall design, architecture, and efficiency.
• Cross functional Collaboration: Communicate with stakeholders to help shape requirements and design decisions.
• Liasing with production support teams in troubleshooting and debugging applications.
• Ensure that best practices and standards are followed as part of the application development life cycle.
• Provide user/support documentation.
• Ensure applications meet performance and scalability requirements.
• Comfortable in using AI based coding assistants and AI powered SDLC processes.

Mandatory Skills

• Strong commercial experience as a Java developer. This will be tested during interview stage.
• Experience in REST API and authentication mechanisms (OAuth/Basic Authentication).
• Messaging Systems experience in any of the following middleware technologies (Kafka preferrable, Nats, Solace, TiBCo, RabbitMQ etc.).
• Experience working with SQL and databases such as Oracle, SQL Server, Hadoop etc.
• Experience with Java Multithreading/Concurrency, Web Services (SOAP/REST), DB2 Database, JMS, MQ, NDM, SFTP.
• Acquainted with industry best practices and standards, software development tools and techniques.
• Experience in developing distributed systems.
• Experience in the use of Containers (Docker, Kubernetes).

Desirable skills

• Experience in Low Latency Software Development in a microservices environment high performance architectures and high throughput applications is a plus.
• Experience in C++ or C# is beneficial.
• Experience in SBE.
• Experience with JNI is a plus.
• Ability to work with distributed teams across multiple time zones.

Education:

• Bachelor's degree in Computer Science, Engineering, Information Technology or similar discipline

What we’ll provide you

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

#LI-MR7

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

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