Citi Logo

Citi

Lead Frontend Developer (ReactJS), Assistant Vice President

Posted 5 Days Ago
Be an Early Applicant
In-Office
Belfast, County Antrim, Northern Ireland
Mid level
In-Office
Belfast, County Antrim, Northern Ireland
Mid level
Lead frontend team to design and build scalable, performant React-based web applications. Define frontend architecture and standards, mentor developers, ensure code quality, optimize performance, and collaborate with UX, product, and backend teams.
The summary above was generated by AI

We are seeking a talented and passionate Lead Frontend Developer with deep expertise in ReactJS to spearhead the development of our cutting-edge user interfaces. The ideal candidate will be a technical leader, responsible for guiding the frontend team, defining architectural patterns, and ensuring the delivery of high-quality, performant, and intuitive web applications. This role requires a strong command of modern JavaScript, React ecosystem, and a commitment to best practices in UI/UX development.

Key Responsibilities

  • Lead the design, development, and implementation of complex, scalable, and responsive web applications using ReactJS and its ecosystem.
  • Define and enforce frontend architectural patterns, coding standards, and best practices to ensure consistency, maintainability, and performance across all frontend projects.
  • Provide technical leadership, mentorship, and guidance to a team of frontend developers, fostering their growth and ensuring high-quality code delivery.
  • Collaborate closely with UX/UI designers, product managers, and backend engineers to translate wireframes and designs into pixel-perfect, highly functional user interfaces.
  • Oversee and conduct thorough code reviews, ensuring adherence to quality, performance, security, and accessibility standards.
  • Optimize application performance, identify and resolve frontend bottlenecks, and improve overall user experience.
  • Drive the adoption of new technologies, tools, and methodologies to enhance our frontend development capabilities.
  • Stay up-to-date with the latest trends and advancements in frontend development, ReactJS, and web technologies.

Required Qualifications

  • Bachelor's or Master's degree in Computer Science, Software Engineering, or a related technical field.
  • Professional experience in frontend web development, with at least 3 years in a lead or senior role focused on ReactJS.
  • Expert-level proficiency in ReactJS, including a deep understanding of its core principles, component lifecycle, hooks, and state management libraries (e.g., Redux, Context API, Zustand).
  • Strong command of modern JavaScript (ES6+), HTML5, and CSS3, with experience in pre-processors (e.g., SASS, LESS) and styled-components or CSS-in-JS solutions.
  • Demonstrable experience with frontend build tools (e.g., Webpack, Vite, Babel) and package managers (npm, yarn).
  • Proficiency in writing unit, integration, and end-to-end tests for frontend applications (e.g., Jest, React Testing Library, Cypress).
  • Solid understanding of responsive design principles and cross-browser compatibility issues.
  • Experience with version control systems, particularly Git.
  • Excellent problem-solving skills, strong analytical capabilities, and clear communication skills (verbal and written).

Preferred Qualifications

  • Experience with other JavaScript frameworks or libraries (e.g., Angular, Vue.js).
  • Familiarity with server-side rendering (SSR) frameworks like Next.js or Remix.
  • Experience with GraphQL APIs.
  • Knowledge of accessibility standards (WCAG) and implementing accessible user interfaces.
  • Understanding of CI/CD pipelines and deployment processes for frontend applications.
  • Experience with cloud platforms (e.g., AWS, Azure, GCP).
  • Familiarity with UI component libraries and design systems (e.g., Material-UI, Ant Design, Storybook).

------------------------------------------------------

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.

Top Skills

Reactjs,Javascript (Es6+),Html5,Css3,Sass,Less,Styled-Components,Css-In-Js,Redux,Context Api,Zustand,Webpack,Vite,Babel,Npm,Yarn,Jest,React Testing Library,Cypress,Git,Next.Js,Remix,Graphql,Ci/Cd,Aws,Azure,Gcp,Material-Ui,Ant Design,Storybook

Similar Jobs

2 Hours Ago
Remote or Hybrid
United Kingdom
Mid level
Mid level
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Support and maintain Red Team infrastructure across EMEA/META: administer Windows/Linux systems, manage cloud (AWS/Azure/GCP) services, build IaC, enforce security/compliance, provide reactive and proactive operational support, document projects, and collaborate on system improvements.
Top Skills: AnsibleAWSAzureBashCloudtrailDockerEc2GCPGitIamJenkinsLinuxLogscaleOidcPythonS3SAMLTerraformUnixWindows
2 Hours Ago
Remote or Hybrid
United Kingdom
Senior level
Senior level
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
The Sales Engineer will act as a trusted advisor on cloud security solutions, engage with sales teams, and provide technical support and training to enhance customer adoption of CrowdStrike products.
Top Skills: Amazon Web ServicesCloud SecurityGoogle Cloud PlatformKubernetesAzureRed Hat Openshift
2 Hours Ago
Remote or Hybrid
United Kingdom
Senior level
Senior level
Enterprise Web • HR Tech • Information Technology • Software • Cybersecurity
As a Lead Product Designer, you will drive the design vision for scalable product experiences, integrating automation and data insights while collaborating with cross-functional teams to enhance user-centric solutions.
Top Skills: Data Modeling PrinciplesFigmaIntelligent AutomationInteraction DesignObject-Oriented Ux

What you need to know about the Belfast Tech Scene

If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account