Senior Full Stack Engineer
Job Purpose:
We are seeking a talented and passionate Senior Full Stack Engineer to design, architect, and deliver next-generation, mission-critical web applications.
In this role, you will play a pivotal part in engineering scalable, high-performance distributed systems with Java / Spring Boot on the back end and modern, responsive user experiences with React & TypeScript on the front end.
As a senior technical contributor, you will drive architectural decisions, champion clean coding and DevOps best practices, and mentor engineers across the team. If you thrive on solving complex technical challenges at global scale and want to see your code make a tangible impact, we would love to have you on our team.
Job Background / Context:
- Architect & Build: Lead the end-to-end design, implementation, and deployment of resilient microservices and full-stack web applications.
- Modern Front-End Engineering: Build intuitive, accessible, and high-performance user interfaces using modern React, Redux, and TypeScript.
- Robust Back-End Services: Develop high-throughput RESTful APIs, event-driven pipelines, and data persistence layers with Spring Boot, Spring Data, and relational/NoSQL databases.
- Engineering Excellence: Champion code quality through automated testing, peer code reviews, CI/CD automation, and architectural discussions.
- Scale & Optimize: Profile and optimize applications for maximum speed, security, resilience, and horizontal scalability.
- Technical Leadership & Mentorship: Act as a subject matter expert (SME), collaborate with product managers, UX designers, and platform architects, and coach junior/mid-level engineers.
- Innovation: Continuously evaluate emerging technologies, libraries, and frameworks to keep our tech stack modern and efficient.
Our Core Tech Stack
- Back End: Java 17+, Spring Boot, Spring MVC, Spring Data JPA / Hibernate, Reactive Spring
- Front End: React, TypeScript / JavaScript (ES6+), Redux / Modern State Management, HTML5, CSS3 / Modern CSS Frameworks, Webpack / Vite, MicroFrontEnd
- Databases & Data Stores: PostgreSQL, MySQL, MongoDB, Redis
- DevOps & Cloud: Docker, Kubernetes, CI/CD Pipelines (Jenkins / GitHub Actions / Tekton), AWS / Hybrid Cloud
- Build & Version Control: Git, Maven, Gradle, npm / yarn
Qualifications
Core Experience
- 7-9 years of professional software engineering experience delivering production-grade full-stack web applications.
- Strong proficiency in Java and extensive, hands-on experience with the Spring Ecosystem (Spring Boot, microservices architecture, RESTful API design).
- In-depth experience with React, state management (e.g., Redux, Context API), and modern front-end tooling/build workflows.
- Strong Experience with building Micro Front Ends in a React based environment.
- Solid understanding of relational (SQL) and non-relational (NoSQL) database design, indexing, and ORM frameworks (Hibernate / JPA).
- Strong foundation in computer science fundamentals: data structures, algorithms, concurrency, system design, and security best practices.
- Proven track record with automated testing (JUnit, Mockito, Jest, React Testing Library) and CI/CD pipelines.
Professional & Leadership Attributes
- Autonomy and ownership: Ability to take business requirements from concept to production with minimal supervision.
- Strong problem-solving mindset with attention to detail, maintainability, and clean architecture (SOLID principles).
- Excellent communication and collaboration skills with both technical and non-technical stakeholders.
Education:
- Bachelor’s degree/University degree or equivalent experience
This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.
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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.
View Citi’s EEO Policy Statement and the Know Your Rights poster.
Skills Required
- 7-9 years of professional software engineering experience delivering production-grade full-stack web applications
- Strong proficiency in Java
- Extensive hands-on experience with the Spring ecosystem, including Spring Boot, microservices architecture, and RESTful API design
- In-depth experience with React, state management such as Redux or Context API, and modern front-end tooling
- Strong experience building React-based micro frontends
- Experience with relational and non-relational database design, indexing, and ORM frameworks such as Hibernate and JPA
- Knowledge of data structures, algorithms, concurrency, system design, and security best practices
- Experience with automated testing using tools such as JUnit, Mockito, Jest, and React Testing Library
- Experience with CI/CD pipelines
- Ability to take business requirements from concept to production with minimal supervision
- Strong problem-solving skills and knowledge of maintainable clean architecture and SOLID principles
- Excellent communication and collaboration skills with technical and non-technical stakeholders
- Bachelor's degree, university degree, or equivalent experience
Citi Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Citi and has not been reviewed or approved by Citi.
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Healthcare Strength — Health coverage is presented as comprehensive, including free in-network preventive care, mental-health resources, and the Be Well Program. Materials also state new hires have access to health and insurance benefits from the outset.
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Retirement Support — The retirement plan offers a $1-for-$1 match up to 6% of eligible pay. New employees are eligible for the plan, with automatic enrollment after 90 days if they do not enroll themselves.
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Inclusive Benefits Coverage — Benefits highlight fertility treatment coverage, adoption/surrogacy reimbursement up to $30,000, and disability coverage. Coverage extends to spouses and domestic partners regardless of gender identity or sexuality, with gender-affirming care-related support noted.
Citi Insights
What We Do
Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. Our core activities are safeguarding assets, lending money, making payments and accessing the capital markets on behalf of our clients. We have 200 years of experience helping our clients meet the world's toughest challenges and embrace its greatest opportunities. We are Citi, the global bank – an institution connecting millions of people across hundreds of countries and cities.
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