Senior Frontend Software Engineer – ReactJS

Experian is a global data and technology company, powering opportunities for people and businesses around the world. We help to redefine lending practices, uncover and prevent fraud, simplify healthcare, create marketing solutions, and gain deeper insights into the automotive market, all using our unique combination of data, analytics and software. We also assist millions of people to realize their financial goals and help them save time and money.

We operate across a range of markets, from financial services to healthcare, automotive, agribusiness, insurance, and many more industry segments.

We invest in people and new advanced technologies to unlock the power of data. As a FTSE 100 Index company listed on the London Stock Exchange (EXPN), we have a team of 22,500 people across 32 countries. Our corporate headquarters are in Dublin, Ireland. Learn more at experianplc.com.

Reporting to the Software Team Manager, you will help modernize the user interface of one of our main products by helping rewrite its legacy native desktop UI into a modern, web-based frontend. As a Senior Frontend Engineer, you’ll build dynamic, responsive interfaces using ReactJS, TypeScript, and other modern technologies. Beyond implementation, you’ll help shape the frontend architecture, promote best practices, and ensure the UI codebase remains clean, scalable, and maintainable.

What you’ll do:

• Develop modular, reusable frontend components using React JS and TypeScript.
• Implement responsive UI layouts that adapt across devices and screen sizes.
• Manage application state using reactive patterns and modern state management tools.
• Write unit and end-to-end tests (e.g., Vitest, Jest, Cypress) to ensure UI stability and reliability.
• Use Git for source control and participate in pull request reviews and code discussions.
• Integrate frontend components with backend APIs, handling asynchronous data fetching, error states, and dynamic data presentation using modern protocols (e.g., REST, SOAP).
• Apply performance optimization techniques such as code splitting, lazy loading, and bundle analysis.
• Participate in sprint planning, technical design reviews, and UI/UX feedback loops.

What you’ll bring:

• Around 5 years of experience with TypeScript and React JS.
• Excellent English language skills.
• Experience building and test complex, data-driven user interfaces.
• Discipline in writing automated tests as part of standard development workflows.
• Familiarity with Agile development practices and collaborative team environments.
• ReactJS: 5 years of hands-on experience.
• TypeScript: Comfortable with typings, generics, and interfaces.
• Git: Daily use of Git with PR workflows and branching strategies.
• API Integration: Experience fetching and managing data from backend services using modern protocols (e.g., REST, SOAP) within React applications.

Additional Skills Considered a Plus

• Experience with any backend language (Java or C++ preferred).
• Familiarity with Jenkins CI/CD pipelines.
• Knowledge of Kubernetes and Helm for container orchestration and deployment.
• Hands-on experience with Docker.
• Exposure to big data technologies such as Apache Spark, especially when used with Scala.

You will get:

• Personal Development – career pathway for professional growth supported by learning and development programs and unlimited access to online educational training courses, learning materials and books.
• Work environment – excellent work conditions with friendly environment, recognized team spirit, and fun and quality recreation time.
• Social benefit package including life insurance, food vouchers, additional health insurance, monthly flex allowance and internet coverage, corporate discounts, marriage and childbirth / adoption allowance, Multisport card, Sharesave plan, Employee assistance program, а birthday gift and many other benefits!
• Work-life balance – 25 days paid vacation, 1 additional day off for your birthday and extra 3 paid days for participation in Social responsibility event.
• Opportunity for Flexible working hours and Home Office.

Experian is an Equal opportunity employer. Everyone can succeed at Experian and bring their whole self to work, irrespective of their gender, ethnicity, religion, colour, sexuality, physical ability or age. If you have a disability or special need that requires accommodation, please let us know at the earliest opportunity.

#LI-Hybrid

This is a hybrid remote/in-office role.

Experian Careers – Creating a better tomorrow together