Senior Fullstack Java Engineer – Lead

Citi

full-time

Posted on: 10/18/2025

Location Type: Hybrid

Location: Tampa • Florida, Texas • 🇺🇸 United States

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Salary

💰 $113,840 - $170,760 per year

Job Level

Senior

Tech Stack

AWSAzureCloudDistributed SystemsGoogle Cloud PlatformJavaJavaScriptJestJUnitMicroservicesMongoDBNode.jsNoSQLPostgresReactReduxSpringSpring BootSpringBoot

About the role

Design, develop, and maintain advanced dynamic rendering frameworks for complex web applications using React.js
Lead the architectural design and implementation of scalable and robust back-end services using Node.js and Java (Spring Boot)
Collaborate with product managers, UX/UI designers, and other engineering teams to translate business requirements into technical solutions
Ensure the performance, quality, and responsiveness of applications
Write comprehensive unit, integration, and end-to-end tests to ensure code quality and system reliability
Participate in code reviews, providing constructive feedback and ensuring adherence to coding standards and architectural principles
Identify and address performance bottlenecks and critical production issues
Mentor and guide junior and mid-level engineers, fostering a culture of technical excellence and continuous learning
Stay up-to-date with emerging technologies and industry trends, advocating for their adoption where appropriate

Requirements

6-10 years of experience in software development, with a significant focus on full-stack web applications
Expert-level proficiency in React.js: Demonstrated experience building complex, dynamic, and performant user interfaces
Deep understanding of React ecosystem, state management (e.g., Redux, Context API), and component lifecycle
Strong proficiency in Node.js: Experience designing and implementing scalable RESTful APIs and microservices
Strong proficiency in Java and Spring Boot: Proven experience in building enterprise-grade back-end applications and services
Proven experience in designing and building complex dynamic rendering frameworks/systems
Understanding of server-side rendering (SSR), client-side rendering (CSR), and hydration techniques
Excellent architectural skills: Ability to design scalable, resilient, and maintainable software systems from concept to deployment
Experience with design patterns, microservices architecture, and distributed systems
Solid understanding of software testing principles: Extensive experience writing unit tests (e.g., Jest, React Testing Library, JUnit), integration tests, and contributing to overall test strategy
Experience with relational and/or NoSQL databases (e.g., PostgreSQL, MongoDB)
Familiarity with cloud platforms (e.g., AWS, Azure, GCP) and CI/CD pipelines
Strong problem-solving skills and the ability to troubleshoot complex issues across the full stack
Excellent communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams

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

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills

React.jsNode.jsJavaSpring BootRESTful APIsmicroservicesunit testingintegration testingPostgreSQLMongoDB

Soft skills

leadershipmentoringproblem-solvingcommunicationcollaborationarchitectural designtechnical excellencecontinuous learningfeedbacktroubleshooting

Senior Fullstack Java Engineer – Lead

Salary

Job Level

Tech Stack

About the role

Requirements

Applicant Tracking System Keywords

Hard skills

Soft skills

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