Senior Front-End Web Developer

Citigroup; Belfast City District; Hybrid; GBP 62,000 - 102,000; Full time

Benefits offered by this job

Hybrid work up to 2 days/wk

Private medical care

Life insurance

Pension plan

27 days annual leave + holidays

Employee assistance program

Learning and development resources

Job summary

Citigroup in Belfast, Northern Ireland, is seeking a Front-end Web Developer to design and maintain user interfaces with React.js while supporting backend services in Java and related frameworks. You will write clean, well-documented code, participate in code reviews, collaborate with designers and stakeholders, and help ensure security, performance and accessibility across web applications.

This is a full-time role with a hybrid work model—up to two days per week remote—and competitive benefits

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent practical experience.
• Commercial experience with React.js, JavaScript, HTML, and CSS.
• Understanding of Java and object-oriented programming concepts.
• Familiarity with REST APIs, Git, Agile/Scrum, and SQL databases.
• Strong problem-solving, communication, and teamwork.
• Willingness to learn and accept feedback.
• Experience with Spring Boot and TypeScript is advantageous but not essential.

Responsibilities

• Develop and maintain user interfaces using React.js and support backend services using Java and related frameworks.
• Write clean, well-documented code, and participate in code reviews and team discussions.
• Debug and resolve application issues; analyze applications for vulnerabilities and security issues; and conduct testing and debugging.
• Collaborate with designers, developers, users, clients, stakeholders, and other technology groups to deliver features and recommended solutions.
• Create and execute unit and integration tests, assist with database design and queries, and apply software development best practices.
• Identify and define system enhancements, analyze problems, recommend solutions, and resolve issues using technical experience.
• Support customer-facing systems, install and support solutions, and consult on technology issues.
• Advise or coach less experienced analysts and serve as a subject matter expert to senior stakeholders or team members.
• Assess and manage risk, comply with applicable laws, rules, regulations, and policies, and elevate and report control issues transparently.

Skills

React.js

JavaScript

HTML

CSS

REST APIs

Git

Agile/Scrum

SQL databases

Java

Spring Boot

TypeScript

Security

Education

Bachelor's degree in Computer Science or Software Engineering

Tools

React

Java

Spring Boot

TypeScript

REST

Git

SQL

Job description

Salary: £62,000 - 102,000 per year

Requirements:

• Bachelors degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
• Commercial experience with React.js, JavaScript, HTML, and CSS.
• Understanding of Java and object-oriented programming concepts.
• Familiarity with REST APIs, Git or other version control systems, Agile/Scrum methodologies, and SQL databases.
• Strong problem-solving ability, communication skills, attention to detail, and ability to work effectively in a team.
• Willingness to learn and accept feedback.
• Experience with Spring Boot and TypeScript is advantageous but not essential.

Responsibilities:

• Develop and maintain user interfaces using React.js and support backend services using Java and related frameworks.
• Write clean, maintainable, well-documented code, and participate in code reviews and team discussions.
• Debug and resolve application issues; analyze applications for vulnerabilities and security issues; and conduct testing and debugging.
• Collaborate with designers, developers, users, clients, stakeholders, and other technology groups to deliver features and recommend programming solutions.
• Create and execute unit and integration tests, assist with database design and queries, and apply software development best practices.
• Identify and define system enhancements, analyze problems, recommend and implement solutions, and resolve issues using technical experience.
• Support customer-facing systems, install and support solutions, and consult on technology issues.
• Advise or coach less experienced analysts and serve as a subject matter expert to senior stakeholders or team members.
• Assess and manage risk, comply with applicable laws, rules, regulations, and policies, and elevate, manage, and report control issues transparently.

Technologies:

• Backend
• CSS
• Frontend
• Git
• Support
• Java
• JavaScript
• LESS
• REST
• React
• SQL
• Security
• Spring
• Spring Boot
• TypeScript
• Web
• AI
• Network

More:

We are Citi, a global financial services company with more than 230,000 colleagues operating in over 180 countries. Our technology teams build and support systems that help shape global finance, with opportunities for mentorship, continuous learning, and potential hybrid work. This full-time Front-end Web Developer role is based in Belfast, Northern Ireland, and involves working in a collaborative development team with React on the frontend and Java on the backend. We offer a business-casual workplace and a hybrid model with up to two days working from home per week, a competitive base salary reviewed annually, discretionary performance-related bonus, 27 days of annual leave plus bank holidays, private medical care and life insurance, an employee assistance program, a pension plan, paid parental leave, employee discounts, and learning and development resources. We are committed to an inclusive workplace where everyone can feel comfortable, contribute, and thrive.

last updated 40 week of 2026