Full Stack Developer

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

About the Role

As a  Full Stack Developer, you will design, build, and maintain scalable web applications using Angular on the frontend and Spring Boot (Java) on the backend. You will collaborate closely with product managers, UX designers, and fellow engineers to deliver high-quality, performant, and maintainable software.

You are expected to mentor junior developers, contribute to architectural decisions, and champion engineering best practices across the team.

Key Responsibilities

• Design and develop responsive, accessible Angular applications with reusable component libraries and state management (NgRx / Signals).
• Build and maintain RESTful APIs using Spring Boot, ensuring high availability, security, and performance.
• Design relational and NoSQL database schemas; write optimized queries for PostgreSQL, MySQL, or MongoDB.
• Implement authentication and authorization flows using OAuth2, JWT, and Spring Security best practices.
• Participate in CI/CD pipeline setup and maintenance using Jenkins, GitHub Actions, or similar tools.
• Write comprehensive unit, integration, and end-to-end tests (JUnit, Mockito, Jasmine, Karma, Cypress).
• Lead technical design discussions, code reviews, and contribute to architectural decisions and ADRs.
• Mentor junior and mid-level developers; foster a culture of quality, ownership, and continuous improvement.
• Collaborate with cross-functional teams in Agile/Scrum ceremonies (sprint planning, retrospectives, stand-ups).
• Monitor application performance and proactively identify and resolve bottlenecks and technical debt.

Required Technical Skills

Frontend — Angular

• Angular 17+ (Components, Directives, Pipes, Guards, Interceptors)
• TypeScript (strict mode, generics, decorators)
• State Management: NgRx / Angular Signals
• Reactive Programming with RxJS
• Angular Material / PrimeNG or equivalent UI libraries
• Lazy Loading, Route Guards, and Module Federation
• HTML5, CSS3, SCSS / SASS
• Responsive Design and Cross-Browser Compatibility
• Web Accessibility Standards (WCAG 2.1)

Backend — Spring Boot / Java

• Java 17+ (Streams, Lambdas, Optional, Records)
• Spring Boot 3.x (Spring MVC, Spring WebFlux)
• Spring Security (OAuth2, JWT, Role-Based Access Control)
• Spring Data JPA / Hibernate ORM
• RESTful API Design
• Microservices Architecture and Design Patterns
• Build Tools: Maven
• Exception Handling, Logging (SLF4J / Logback)

Data & Infrastructure

• Relational Databases: PostgreSQL, MySQL, Oracle
• NoSQL Databases: MongoDB, Redis
• Message Brokers: Apache Kafka, RabbitMQ
• Containerization: Docker, Kubernetes (K8s)
• Cloud Platforms: AWS / Azure / GCP (basic to intermediate)
• Version Control: Git, GitHub
• CI/CD: Jenkins, GitHub ,LSE

Requirements

• Bachelor's or Master's degree in Computer Science, Software Engineering, or equivalent practical experience.
• 6+ years of professional software development experience, with at least 3 years in full-stack roles.
• Deep understanding of Object-Oriented Programming (OOP), SOLID principles, design patterns, and clean code practices.
• Proven ability to debug complex issues across the full stack — from browser DevTools to JVM profiling.
• Strong communication skills; ability to articulate technical concepts to both technical and non-technical stakeholders.
• Experience working in Agile / Scrum environments with a track record of delivering features on time.
• Ability to work independently and take end-to-end ownership of features and modules.

Nice to Have

• Experience with microfrontend architecture (Module Federation, Single-SPA).
• Familiarity with GraphQL schema design and Apollo Client/Server.
• Knowledge of event-driven architecture using Apache Kafka or RabbitMQ.
• Contributions to open-source projects or a strong GitHub portfolio.
• Experience with observability and monitoring tools: Prometheus, Grafana, ELK Stack, or Datadog.
• Exposure to AI/ML integrations or LLM-powered features in production applications.

Qualifications:

• 6-10 years of relevant experience in the Financial Service industry
• Intermediate level experience in Applications Development role
• Consistently demonstrates clear and concise written and verbal communication
• Demonstrated problem-solving and decision-making skills
• Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements

Education:

• Bachelor’s degree/University degree or equivalent experience