Java Developer Sponsorship jobs

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  Visa sponsorship available for eligible candidates

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  Strong focus on work-life balance with a flexible hybrid model (3 days onsite)

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  Be part of a collaborative, multidisciplinary agile environment alongside civil servants and industry experts

Based in Swansea, South Wales - three days per week on-site

Role Overview

We are seeking a highly skilled and experienced Java Developer to lead the design, development, and delivery of scalable, secure, and high-performance enterprise applications. The ideal candidate will possess deep expertise in Java and Spring Boot, strong architectural knowledge, and proven experience leading development teams in delivering large-scale digital solutions.

As a technical leader, you will drive engineering best practices, mentor developers, contribute to strategic technology decisions, and collaborate closely with cross-functional stakeholders to ensure successful project delivery.

Key Responsibilities

Technical Leadership

• Lead the design, development, and maintenance of enterprise-grade backend applications using Java (8/11/17+) and Spring Boot.
  
• Define and drive technical architecture, coding standards, and development best practices.
  
• Provide technical guidance and mentorship to development teams.
  
• Conduct code reviews and ensure high-quality, maintainable, and secure code.
  
• Collaborate with Solution Architects and Engineering Managers on technology roadmaps and architectural decisions.
  

Application Development

• Design and implement RESTful APIs and microservices-based solutions.
  
• Develop scalable, resilient, and high-performing backend services.
  
• Integrate with internal and external systems through APIs, messaging platforms, and event-driven architectures.
  
• Ensure compliance with security, performance, and reliability requirements.
  

Architecture & Design

• Participate in system architecture, technical design discussions, and solution planning.
  
• Drive cloud-native development practices and modernization initiatives.
  
• Identify and mitigate technical risks and performance bottlenecks.
  
• Ensure scalability, maintainability, and extensibility of software solutions.
  

DevOps & Delivery

• Support and enhance CI/CD pipelines and automated deployment processes.
  
• Collaborate with DevOps teams to implement containerized and cloud-based solutions.
  
• Contribute to Infrastructure as Code (IaC) initiatives using tools such as Terraform.
  
• Participate in release planning, production deployments, and incident management.
  

Stakeholder Collaboration

• Work closely with Product Owners, Business Analysts, Architects, QA, and DevOps teams.
  
• Translate business requirements into technical solutions.
  
• Communicate technical concepts effectively to both technical and non-technical stakeholders.

Required Skills & Qualifications

Technical Skills

• 8+ years of hands-on software development experience with Java.
  
• Strong expertise in Java and Spring Boot frameworks.
  
• Extensive experience designing and implementing microservices architectures.
  
• Strong knowledge of RESTful API design and integration.
  
• Experience with Hibernate, JPA, and ORM frameworks.
  
• Hands-on experience with messaging technologies such as Kafka or RabbitMQ.
  
• Experience with cloud platforms including AWS, Azure, or GCP.
  
• Strong experience with Docker and Kubernetes.
  
• Proficiency with relational and NoSQL databases such as PostgreSQL, MySQL, MongoDB, or similar.
  
• Deep understanding of application security, authentication, authorization, and secure coding practices.
  
• Experience with performance tuning, monitoring, and troubleshooting distributed systems.
  
• Strong knowledge of Git, branching strategies, and Agile/Scrum methodologies.
  

Leadership Experience

• Proven experience leading development teams and delivering complex enterprise projects.
  
• Ability to mentor developers and foster technical excellence.
  
• Experience managing technical deliverables, estimations, and development planning.

Preferred Qualifications

• Experience working within regulated, standards-driven, or public sector environments (e.g., GDS-aligned projects).
  
• Experience implementing cloud-native architectures and event-driven systems.
  
• Familiarity with Infrastructure as Code tools such as Terraform or CloudFormation.
  
• Experience with observability and monitoring tools such as ELK, Grafana, Prometheus, or Splunk.
  
• Relevant Java, AWS, Azure, GCP, Kubernetes, or architecture certifications.
  
• Experience with Domain-Driven Design (DDD) and API-first development approaches.

Soft Skills

• Strong leadership and decision-making capabilities.
  
• Excellent analytical and problem-solving skills.
  
• Effective communication and stakeholder management abilities.
  
• Strong collaboration and team-building mindset.
  
• Ability to balance technical excellence with business objectives.
  
• Self-motivated with the ability to work independently and lead distributed teams.

Nice to Have

• Experience in digital transformation programs.
  
• Exposure to government, healthcare, banking, or other highly regulated industries.
  
• Experience leading geographically distributed development teams.
  
• Knowledge of AI-assisted development tools and modern software engineering practices.