Senior React Developer

Job Description

We are seeking a Senior React Developer to own and maintain a suite of CI/CD migration tools that help engineering teams migrate their build and deployment pipelines to LightSpeed Enterprise (LSE), Citi's strategic CI/CD platform. These tools support migrations from various legacy platforms including TeamCity, Jenkins, and UDeploy. You will be responsible for maintaining existing applications, implementing new features, and ensuring security compliance by addressing CVEs/CVMs as they arise.

Key Responsibilities:

• Own and maintain multiple React-based migration tools built with modern frameworks (React 18/19, Vite).
• Proactively identify, assess, and remediate CVEs/CVMs in application dependencies, ensuring timely resolution within SLA requirements.
• Perform regular dependency updates and security patching across all migration tool applications.
• Enhance existing features for YAML/configuration viewing and editing, file download functionality, and multi-step migration workflows.
• Integrate with backend services including LightSpeed API, Gen AI services, and legacy CI/CD platform APIs (TeamCity, Jenkins, UDeploy).
• Implement and maintain OIDC-based authentication (H2M) for secure user sessions.
• Maintain Node.js/Express backends that serve React applications and handle runtime configuration.
• Write and maintain comprehensive unit tests using Jest and React Testing Library.
• Support Kubernetes/Helm-based deployments across DEV, UAT, COB, and PROD environments.
• Work with Docker containerization and Citi's Artifactory for package management.
• Ensure code quality through ESLint, Prettier, and SonarQube compliance.
• Collaborate with DevOps and security teams on vulnerability assessments and remediation plans.
  
  

Required Skills:

• 5-6 years of professional experience in frontend development with React.js.
• Strong proficiency in React.js (hooks, Context API, functional components, memoization patterns).
• Experience with modern build tools (Vite, Webpack, or Create React App).
• Proven experience in CVE/CVM remediation and dependency management (npm audit, Snyk, or similar tools).
• Solid understanding of RESTful API integration using Axios or similar libraries.
• Experience with authentication protocols (OIDC/OAuth 2.0).
• Proficiency in Node.js and Express.js for backend development.
• Experience with containerization (Docker) and basic Kubernetes/Helm knowledge.
• Strong testing skills with Jest and React Testing Library.
• Familiarity with CSS frameworks (Tailwind CSS) and enterprise component libraries.
• Experience with Git version control and PR-based workflows.
  
  

Preferred Skills:

• Experience with Monaco Editor or similar code editor integrations.
• Knowledge of YAML/JSON configuration management.
• Understanding of CI/CD concepts and platforms (TeamCity, Jenkins, UDeploy, or similar).
• Experience with enterprise design systems.
• Familiarity with multi-environment deployment strategies.
• Experience with file handling (JSZip, file-saver) in browser applications.
• Understanding of encryption/security practices.
  
  

Nice to Have:

• Experience with Gen AI/LLM service integrations.
• Hands-on experience with TeamCity, Jenkins, or UDeploy administration.
• Experience working in financial services or regulated environments.
• Familiarity with Citi's internal tools, infrastructure, and security policies.
  
  

What You'll Work With:

React 18/19, Vite, Tailwind CSS, Node.js, Express.js, Monaco Editor, Axios, OIDC, Jest, Docker, Kubernetes, Helm, GitHub, SonarQube, npm/Artifactory

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Job Family Group:

Technology

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Job Family:

Systems & Engineering

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Time Type:

Full time

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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