Java Developer

Undisclosed Company; United Kingdom; Remote; GBP 72,000 - 94,000; Full time

Job summary

Experis is seeking an Application Developer to join a large-scale transformation project with a government client. The role focuses on designing, building, and assuring changes as legacy systems are migrated to modern cloud-based solutions built on Java, AWS, and microservices.

You will work with IBM delivery teams and DWP stakeholders across the full software lifecycle to ensure scalable, high-quality applications during migration and modernization efforts.

Qualifications

• Proven commercial experience with Java and Spring Framework (backend focus).
• Experience in UNIX/Linux environments.
• Strong SQL development and database exposure.
• Familiarity with GitLab for source control and CI/CD.
• Knowledge of secure coding practices and software engineering standards.
• Experience working in Agile delivery environments.

Responsibilities

• Design, develop, and maintain Java-based application components.
• Support refactoring and migration of legacy applications to modern cloud-based architectures.
• Collaborate with IBM and DWP teams to meet programme objectives.
• Develop and support RESTful services and web applications.
• Contribute to technical design discussions and solution implementation.
• Ensure code quality through testing, peer reviews, and QA activities.
• Participate in Agile ceremonies and drive continuous improvement.
• Support deployment, troubleshooting, and production issue resolution.
• Maintain technical documentation and development standards.

Skills

Java

Spring Framework

UNIX/Linux

SQL

GitLab

Agile

Security best practices

Stakeholder communication

Problem solving

Tools

GitLab

AWS

Job description

Application Developer - Java & Web Technologies

Location: Remote within the UK, with occasional travel to client/office

Length: initial 12 month contract

Rate: up to £450/day Umbrella

Security Requirement: Applicants must have lived continuously in the UK for the last 5 years

Our client is working with a government organisation, supporting the modernisation of applications that form part of the UK's Critical National Infrastructure and enable the payment of over £150 billion in benefits annually.

As part of this major transformation, legacy applications are being re-factored and migrated from traditional on-premise environments using COBOL, C++ and Java into modern, cloud-based solutions built on Java, AWS, and microservices architecture.

We're looking for an Application Developer to join a large-scale delivery team and play a key role in designing, building, and assuring application changes that will support the successful migration and modernisation of critical DWP services.

The Role

As an Application Developer, you will work closely with IBM delivery teams, DWP stakeholders, and a wider programme team to develop and enhance business-critical applications.

You will contribute across the full software development lifecycle, helping to design, develop, test, and support application components while ensuring quality, scalability, and maintainability throughout the migration process.

Key Responsibilities

• Design, develop, and maintain Java-based application components
• Support the refactoring and migration of legacy applications to modern cloud-based architectures
• Work collaboratively with IBM and DWP teams to deliver programme objectives
• Develop and support RESTful services and web-based applications
• Contribute to technical design discussions and solution implementation
• Ensure code quality through testing, peer reviews, and assurance activities
• Participate in Agile delivery ceremonies and continuous improvement initiatives
• Support deployment, troubleshooting, and production issue resolution where required
• Maintain technical documentation and development standards

Essential Skills & Experience

• Strong commercial experience with Java and Spring Framework
• Experience working in UNIX/Linux environments
• Strong SQL development and database experience
• Experience using GitLab for source control and CI/CD activities
• Knowledge of software engineering best practices and secure coding principles
• Experience working within Agile delivery environments
• Strong problem-solving and stakeholder communication skills

Desirable Skills

• Experience with AWS cloud technologies
• Understanding of microservices architecture
• Experience modernising or migrating legacy applications
• Exposure to DevOps tooling and automated deployment pipelines
• Experience working on large-scale public sector or enterprise transformation programmes