Senior Back-End Java Developer — Trading Platforms

Citigroup Inc.; Jersey City (NJ); On-site; USD 142,320 - 213,480; Full time

Benefits offered by this job

Medical, dental & vision coverage

401(k)

Life, disability insurance

Wellness programs

Paid time off

Job summary

Citigroup Inc. is seeking a Senior Back-End Java Developer to join a back-office trading application team in Jersey City. You will design, build, and sustain high-performance software for trading infrastructure and enterprise-scale systems.

You will champion trunk-based development, test automation, and secure coding while leading with a mix of hands-on work and mentorship. This role emphasizes distributed systems and modern delivery practices.

Qualifications

• Strong hands-on coding in Kotlin, Java, and Python for enterprise apps.
• Deep expertise in microservices, Spring Boot, high availability, and low-latency systems.
• Proficiency with Kafka, Solace, Tibco, MQ and data pipelines.
• Cloud-native tech: Kubernetes, Docker, OpenShift.
• Oracle SQL in high-performance environments.
• Experience with trunk-based development, feature flags, and progressive delivery.
• Proficient in TDD/BDD and automation-first testing.
• Designing and operating CI/CD pipelines and DevOps practices.
• Code reviews, mentoring, and cross-functional teamwork.
• Observability and production monitoring in distributed financial systems.

Responsibilities

• Design, develop, and maintain scalable back-office trading apps following SOLID and modern patterns.
• Implement trunk-based development, feature flags, and progressive delivery.
• Apply TDD/BDD to ensure high test coverage and reliability.
• Drive CI/CD, DevOps, IaC, and automated testing for reliability.
• Build distributed, event-driven microservices using Kafka, Solace, Tibco, MQ.
• Review code and enforce secure coding standards and security policies.
• Collaborate with architects, product owners, and cross-functional teams.
• Partner with DevOps to optimize pipelines and observability.
• Mentor junior engineers and lead technical discussions.

Skills

Kotlin

Java

Python

Microservices

Spring Boot

Kafka

Solace

Tibco

MQ

Kubernetes

Docker

OpenShift

Oracle SQL

CI/CD

TDD/BDD

DevOps

Education

Bachelor’s in Computer Science, Software Engineering, or related technical field

Master’s degree preferred

Tools

OpenShift

Job description

We are seeking a highly skilled and hands-onSenior Back-End Java Developerto join a back-office trading application technology team within a leading financial institution. In this role, you will design, build, and sustain scalable, high-performance software solutions at the intersection of engineering excellence and financial technology transformation. You will champion modern delivery practices — including trunk-based development, test automation, and secure coding — while contributing to mission-critical trading infrastructure. This is a senior individual contributor and team leadership opportunity for an engineer who thrives in high-velocity, quality-first environments and is passionate about distributed systems, microservices, and continuous delivery at enterprise scale.

Responsibilities

• Design, develop, and maintain robust, scalable, and high-performance back-office trading applications following SOLID principles, clean code standards, and modern software design patterns.

• Implement trunk-based development practices, feature flags, and progressive delivery strategies to enable continuous integration and rapid, safe deployment cycles.

• Apply Test-Driven Development (TDD) and Behavior-Driven Development (BDD) methodologies to ensure high unit test coverage, code quality, and production reliability.

• Drive the adoption of CI/CD pipelines, DevOps practices, infrastructure as code, and automated testing to enhance system reliability and delivery velocity.

• Design and deliver distributed, event-driven microservices leveraging messaging platforms such as Kafka, Solace, Tibco, and MQ, with a focus on low-latency and high-availability requirements.

• Conduct rigorous code reviews and vulnerability assessments, enforcing secure coding standards and ensuring compliance with organizational security policies.

• Collaborate with architects, product owners, and cross-functional teams to design scalable, resilient system architectures and contribute to technical design documentation.

• Partner with DevOps teams to optimize deployment pipelines, observability tooling, and production resilience for critical trading systems.

• Mentor junior engineers, lead technical discussions, and foster a culture of continuous learning, engineering excellence, and shared accountability.

Qualifications

• Strong hands-on coding proficiency in Kotlin, Java, and Python, with demonstrated experience building production-grade, enterprise-scale applications.

• Deep expertise in microservices architecture and system design, including Spring Boot, distributed systems, high availability, fault tolerance, and low-latency computing.

• Proficiency in event-driven and messaging systems — including Kafka, Solace, Tibco, and MQ — with experience designing and operating high-throughput data pipelines.

• Hands-on experience with containerization and cloud-native platforms, specifically Kubernetes, Docker, and OpenShift.

• Solid experience with relational databases, particularly Oracle SQL, within high-performance transactional environments.

• Proven experience with trunk-based development, feature flags, and progressive delivery in an enterprise engineering context.

• Strong command of TDD, BDD, and automation-first testing practices, with a track record of maintaining high test coverage in agile delivery environments.

• Proficiency in CI/CD pipeline design and operation, with a firm understanding of DevOps principles, secure coding practices, and vulnerability assessment methodologies.

• Experience conducting code reviews, leading technical discussions, and mentoring engineers within cross-functional, agile product teams.

• Familiarity with performance tuning, observability, and production monitoring practices in distributed, high-availability financial systems.

Education

• Bachelor’s in Computer Science, Software Engineering, or related technical field, or industry equivalent experience required

• Master’s degree preferred

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Primary Location:

Jersey City New Jersey United States

Primary Location Full Time Salary Range:

$142,320.00 - $213,480.00

In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including:

• medical, dental & vision coverage
• 401(k)
• life, accident, and disability insurance
• wellness programs

Citi also offers paid time off packages, including:

• planned time off (vacation)
• unplanned time off (sick leave)
• paid holidays

  For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

  Most Relevant Skills

  Please see the requirements listed above.

  Other Relevant Skills

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

  Anticipated Posting Close Date:

  Aug 07, 2026

  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.

  Illinois residents – AI Notice and Right

  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.

  View Citi’s EEO Policy Statement and the Know Your Rights poster.