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Barclays Logo Barclays · IT - Software Development

Java Fullstack Engineer

United Kingdom, Glasgow · Job Posted February 21, 2026
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Job Description

Join us as a Java Fullstack Engineer, to contribute to the development of high-quality, scalable applications supporting our critical business functions. You’ll be part of a fast-paced engineering team focused on building modern, reliable, and secure solutions that enhance customer and colleague experiences. This role will give you the opportunity to work across the full software development lifecycle, collaborate closely with product and design teams, and deliver high‑impact services that drive meaningful outcomes for the business.

Job Responsibility

  • Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance
  • Cross-functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives
  • Collaboration with peers, participate in code reviews, and promote a culture of code quality and knowledge sharing
  • Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture of technical excellence and growth
  • Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions
  • Implementation of effective unit testing practices to ensure proper code design, readability, and reliability

Requirements

  • Proficient Java development skills, including Core Java, Collections, Multi‑Threading and Concurrency, OOP concepts, Exception Handling, JVM concepts, and the Spring ecosystem (Spring Boot, Spring Batch, Spring Integration)
  • Demonstrated experience in SQL, including writing queries and understanding relational concepts
  • Practical experience in Integration, covering Microservices architecture, designing and integrating with RESTful services, and applying design patterns
  • Working knowledge of modern UI frameworks, such as Angular, React, and core web technologies (HTML, CSS, JavaScript)

Nice to have

  • Experience with DevOps practices, including monitoring and tooling (ELK, AppDynamics), build and deployment tools, containerisation (Docker, Kubernetes), load‑balancing concepts, and working on highly scalable applications
  • Knowledge of database and messaging technologies, including SQL (joins, indexing, transactions), NoSQL (MongoDB, Cassandra, CAP theorem), query optimisation, and messaging platforms
  • Understanding of caching frameworks, including caching concepts, types, methods (priming, eviction, cache miss, consistency, staleness, MRU), and experience with messaging solutions such as Kafka or Solace

What we offer

  • Competitive holiday allowance
  • Life assurance
  • Private medical care
  • Pension contribution
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