Senior GUI Developer

Citibank (Switzerland) AG; India; On-site; Confidential; Full time

Job summary

Citibank (Switzerland) AG is seeking a Senior GUI Developer to lead frontend initiatives at the C11 level. You will mentor juniors, make architectural decisions, and deliver complex UI projects with performance and security in mind.

The role requires strong JavaScript, SPA experience (Angular/React), state management, and API integration. You will collaborate across teams and ensure robust unit/E2E testing, using modern CI/CD processes.

Qualifications

• 5-7 years of relevant experience in UI development for financial services.
• Strong JavaScript (ES6+) and modern frameworks familiarity.
• Experience with SPA architectures, state management, and routing.
• Ability to design secure, scalable frontends and mentor juniors.

Responsibilities

• Lead UI development, mentor junior developers, and guide technical decisions.
• Build scalable SPAs with modern frameworks, ensure performance and quality.
• Collaborate with backend teams to integrate RESTful APIs and services.

Skills

JavaScript

SPA

State management

UI/UX

Routing

Unit testing

E2E testing

API Integration

Spring Boot

SQL/NoSQL

Git

CI/CD

RESTful services

WebLogic/Tomcat

Education

Bachelor's degree or equivalent experience

Tools

Git

Jenkins

TeamCity

SonarLint

Snyk

Playwright

Cypress

Selenium

WebLogic

Tomcat

Job description

## Senior GUI DeveloperApplylocations: DLF CYBERCITY 12Btime type: Full timeposted on: Posted Todayjob requisition id: 26976496A Senior UI Developer at the C11 level is expected to be a highly skilled and experienced professional who can lead the technical aspects of user interface development. They are responsible for not only writing high-quality code but also for mentoring junior developers, making architectural decisions, and ensuring the successful delivery of complex projects. **Responsibilities:*** Utilize knowledge of applications development procedures and concepts, and basic knowledge of other technical areas to identify and define necessary system enhancements, including using script tools and analyzing/interpreting code* Consult with users, clients, and other technology groups on issues, and recommend programming solutions, install, and support customer exposure systems* Apply fundamental knowledge of programming languages for design specifications.* Analyze applications to identify vulnerabilities and security issues, as well as conduct testing and debugging* Acts as SME to senior stakeholders and /or other team members.* Appropriately assess risk when business decisions are made**Technology Skills Required:****Core Frontend Development*** **JavaScript Expertise:** Deep understanding of modern JavaScript (ES6+), including concepts like closures, asynchronous programming (Promises, async/await), and functional programming.* **Single Page Applications (SPA):** Proven experience in building complex, scalable, and performant single-page applications using modern frameworks like **Angular** or **React**.* **State Management:** Proficiency in managing application state with libraries like **RxJS** for Angular or **Redux/Context API** for React, ensuring data consistency and a predictable state container.* **UI/UX & Performance:** A strong ability to debug, tune, and optimize UI components for responsiveness and speed.* **Routing:** Expertise in designing and implementing client-side routing to create seamless and intuitive user navigation within the application.* **Designing:** Ability to make CSS changes**Testing and Quality Assurance*** **Unit Testing:** Strong knowledge of unit testing frameworks such as **Jest**, **Jasmine**, or **Karma** to ensure code reliability and maintainability.* **End-to-End Testing:** Ability to write and maintain robust automation tests using tools like **Playright**, **Cypress** or **Selenium**.**Backend Integration & Services*** **API Integration:** Solid experience integrating with **RESTful APIs** and a strong understanding of the request/response lifecycle.* **Backend Familiarity:** Foundational knowledge of backend Java spring boot technologies is a plus* **Database Knowledge:** Experience with any SQL or NoSQL databases (e.g., Oracle, Sybase, MongoDB) is beneficial.* **Messaging Systems:** Exposure to messaging technologies like JMS or Solace is an added advantage.**DevOps, Tooling, and Architecture*** **Version Control:** Proficiency with **Git** for managing code versions, branching strategies, and collaborative development.* **CI/CD:** Experience working in a Continuous Integration and Continuous Delivery (CI/CD) environment with tools like **TeamCity**, **Jenkins*** **Code Quality:** Familiarity with code quality and security scanning tools such as **SonarLint**, **Blackduck, Snyk** etc.* **Application Servers:** Knowledge of application or web servers like WebLogic and/or Tomcat.* **Architectural Principles:** Proficient in industry-standard best practices, including Design Patterns, modular coding, Object-Oriented Programming (OOP).**Qualifications:*** 5-7 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 experienceThis job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.