Senior Java Full Stack Developer

Citi • Irving, TX

3d • Onsite

About The Position

Citi is seeking a Senior Java Full Stack Developer to contribute to the design, implementation, and evolution of complex, enterprise-grade application systems. This role sits at the intersection of software engineering excellence and financial services technology, requiring a practitioner who can operate with a high degree of autonomy while driving outcomes across the full software development lifecycle. The ideal candidate brings deep expertise in Java-based backend development, modern frontend frameworks, cloud-native architectures, and event-driven microservices. This position offers the opportunity to serve as a subject matter expert and trusted advisor, shaping technical direction within a team operating at scale in one of the world's leading financial institutions.

Requirements

• 5+ years' experience in application development roles with demonstrated full-stack engineering expertise across the complete software development lifecycle.
• Deep proficiency in Java application development, including strong command of object-oriented programming (OOP), data structures, algorithms, advanced Java concepts, and design patterns.
• Proven experience with Spring Boot and microservices architecture, including design and implementation of RESTful services, event-driven services, and Service-Oriented Architecture (SOA) patterns.
• Hands-on experience with frontend frameworks (Angular and/or React) and the ability to build and integrate modern, responsive web application interfaces with backend services.
• Proficiency with both relational databases (SQL Server, Oracle) and non-relational databases, along with experience using messaging systems such as Kafka, Solace, and JMS.
• Practical knowledge of security implementation including OAuth2, JWT, and encryption, combined with experience in system performance optimization techniques including multi-threading and parallel processing.
• Experience with containerization and orchestration technologies, including Docker, Kubernetes, and OpenShift, and familiarity with cloud-native application development principles.
• Proficiency with version control systems (GitHub, Bitbucket) and CI/CD pipelines; experience with AI-powered development tools such as GitHub Copilot is a plus.
• Bachelor's degree in Computer Science, Software Engineering, or a related equivalent technical experience.

Nice To Haves

• Familiarity with Python, Generative AI, or Agentic AI frameworks is a big plus.
• Experience operating within regulated financial services environments and adhering to compliance and risk management standards is preferred.

Responsibilities

• Design, develop, and implement complex full-stack application systems across the entire software development lifecycle.
• Build scalable microservices using Spring Boot and event-driven patterns, ensuring alignment with cloud-native development principles, containerization (Docker), and orchestration platforms (Kubernetes, OpenShift).
• Develop and maintain RESTful APIs and service-oriented integrations, ensuring high performance, reliability, and secure design through the application of OAuth2, JWT, and encryption standards.
• Monitor and control all phases of development including analysis, design, construction, and testing; proactively identify risks and apply sound engineering judgment to resolve complex technical issues.
• Collaborate with business stakeholders and cross-functional technology teams to gather requirements, recommend advanced programming solutions, and translate business needs into robust technical implementations.
• Define and enforce development standards, operating procedures, and best practices; contribute to post-implementation reviews to validate system design, security posture, and business functionality.
• Optimize application performance through parallel processing, multi-threading, and synchronization strategies; leverage algorithms, data structures, and established design patterns to deliver production-grade solutions.
• Establish and maintain CI/CD pipelines using version control systems (GitHub, Bitbucket) and automation tooling to support continuous delivery and deployment practices.
• Serve as a subject matter expert and technical advisor to senior stakeholders and junior team members; provide mentorship and coaching to less experienced analysts and developers.
• Assess and manage risk in all engineering decisions, ensuring compliance with applicable policies, regulatory requirements, and ethical standards, with full transparency in reporting and escalation.

Benefits

• medical, dental & vision coverage
• 401(k)
• life, accident, and disability insurance
• wellness programs
• paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays

What This Job Offers

• Job Type: Full-time
• Career Level: Senior