Senior Back-End Java Developer — Trading Platforms

Jersey Digs; Jersey City, Northern (NJ, KY); Hybrid; USD 142,000 - 213,000; Full time

Job summary

Citi in Jersey City seeks a Senior Back-End Java Developer to design, build, and sustain scalable trading software. You will work on back-office applications, champion trunk-based delivery, TDD/BDD, and secure coding in a high-velocity environment.

Candidates should have strong Java/Kotlin skills, Spring Boot, microservices, and experience with Kafka or similar messaging systems, plus Kubernetes/Docker/OpenShift. Bachelor’s in CS or related field required; Master’s preferred.

Qualifications

• Bachelor's degree in Computer Science or related field required.
• Master's degree preferred for advanced roles.
• Strong experience in Java/Kotlin and distributed systems.
• Experience with microservices and messaging systems is required.

Responsibilities

• Design, develop, and maintain back-office trading applications using SOLID principles.
• Implement trunk-based development, feature flags, and progressive delivery.
• Apply TDD/BDD to ensure high test coverage and reliability.
• Drive CI/CD pipelines and DevOps practices for deployment and observability.
• Design distributed, event-driven microservices using Kafka, Solace, Tibco, or MQ.
• Conduct code reviews and mentor engineers; ensure secure coding practices.

Skills

Kotlin

Java

Python

Spring Boot

Microservices

Kafka

Education

Bachelor's in Computer Science

Master's degree preferred

Tools

Kubernetes

Docker

OpenShift

Oracle SQL

Job description

Overview

We are seeking a highly skilled and hands-on **Senior Back-End Java Developer** to 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; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and 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.

Anticipated Posting Close Date

Not specified.