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Full Stack Lead Developer; Java​/ReactJS), Vice President

Job in Belfast, County Antrim, BT1, Northern Ireland, UK
Listing for: Citigroup Inc.
Full Time position
Listed on 2026-02-28
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer, Cloud Engineer - Software
Salary/Wage Range or Industry Benchmark: 100000 - 125000 GBP Yearly GBP 100000.00 125000.00 YEAR
Job Description & How to Apply Below
Position: Full Stack Lead Developer (Java/ReactJS), Vice President

We are seeking an experienced and highly motivated Lead Full Stack Developer to join our dynamic engineering team. The ideal candidate will possess deep expertise in Java and React

JS, coupled with a strong understanding of both relational (RDBMS) and No

SQL databases. This role is critical for driving the design, development, and deployment of robust, scalable, and high-performance applications. The Lead Developer will also play a key role in advocating for and implementing best practices in CI/CD application delivery and will have the opportunity to explore and integrate AI technologies into our solutions.

Key Responsibilities
  • Lead the design, development, and implementation of complex enterprise-level applications using Java for backend services and React

    JS for intuitive and responsive front-end user interfaces.
  • Architect and manage data storage solutions, demonstrating proficiency with relational databases (e.g. Oracle, MySQL) and No

    SQL databases (e.g., Mongo

    DB, Cassandra, Dynamo

    DB). This includes schema design, query optimization, and data migration strategies.
  • Drive continuous improvement in our CI/CD pipelines, ensuring efficient, automated, and reliable application delivery from development to production environments.
  • Mentor and provide technical guidance to junior and mid-level developers, fostering a culture of collaboration, excellence, and continuous learning.
  • Collaborate with product managers, UX/UI designers, and other stakeholders to translate business requirements into technical specifications and deliver innovative solutions.
  • Conduct code reviews, ensuring adherence to coding standards, performance, security, and scalability best practices.
  • Troubleshoot and resolve complex technical issues across the full application stack.
  • Stay abreast of emerging technologies, industry trends, and best practices in full-stack development, database management, CI/CD, and Artificial Intelligence.
Required Qualifications
  • Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
  • Professional experience in software development, with at least 3 years in a lead or senior full-stack role.
  • Strong proficiency in Java development, including Spring Boot, Spring Framework, and related ecosystem.
  • Expert-level skills in React

    JS and its core principles, along with experience in popular React workflows (such as Flux or Redux) and component libraries.
  • Demonstrable experience with RDBMS (e.g., Postgre

    SQL, Oracle, MySQL), including advanced SQL, schema design, and performance tuning.
  • Solid understanding and hands-on experience with No

    SQL databases (e.g., Mongo

    DB, Cassandra, Dynamo

    DB), including data modeling and query optimization for these systems.
  • Proven experience with CI/CD application delivery management, including tools like Jenkins, Git Lab CI, Git Hub Actions, Azure Dev Ops, or similar.
  • Experience with cloud platforms (e.g., AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes).
  • Excellent problem-solving, analytical, and communication skills.
  • Ability to work effectively in an agile development environment.
Preferred Qualifications
  • Exposure to Artificial Intelligence (AI) and Machine Learning (ML) concepts, frameworks (e.g., Tensor Flow, PyTorch), or practical application of AI in software solutions.
  • Experience with message brokers (e.g., Kafka, Rabbit

    MQ) and microservices architecture.
  • Familiarity with testing frameworks (e.g., JUnit, Mockito, Jest, React Testing Library).
  • Experience with Graph

    QL.

Time Type:
Full time

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 w Citi’s EEO Policy Statement and the Know Your Rights poster.

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