Java Developer

83zero Limited; England; Hybrid; GBP 74,000 - 83,000; Full time

Job summary

83zero Ltd is seeking an experienced Java Developer with active UK SC Clearance to join our Berkshire-based team on a hybrid, day-rate contract. You will design, develop and maintain Java applications, build RESTful APIs and microservices, and collaborate with architects and DevOps in an agile environment.

The role requires hands-on Java development, Spring Boot expertise, REST API integration, and a strong foundation in SQL.

Qualifications

• Proven Java development experience in commercial projects.
• Hands-on Spring Boot and microservices development.
• Experience designing and integrating REST APIs.
• Strong SQL and relational database knowledge.
• Experience with CI/CD pipelines, Git and automated testing.
• Cloud exposure (AWS or Azure) is beneficial.
• Experience working in Agile/Scrum teams.
• Active UK Security Clearance (SC).

Responsibilities

• Design, develop, and maintain Java-based applications.
• Build and integrate RESTful APIs and microservices.
• Work with Spring Boot and modern Java frameworks.
• Develop scalable, secure, and high-performing solutions.
• Collaborate with architects, developers and DevOps teams.
• Support testing, troubleshooting and continuous improvement.

Skills

Java

Spring Boot

REST APIs

SQL

CI/CD

Git

Automated testing

Agile/Scrum

SC Clearance

Cloud (AWS/Azure)

Job description

Location: Reading, Berkshire (Hybrid)

Day rate: £400 - £450 (Inside IR35)

Clearance: Active SC Clearance required

We are looking for an experienced SC Cleared Java Developer to join a growing technology team working on complex, business-critical applications.

This is a great opportunity for someone who enjoys hands-on development, solving technical challenges and working on secure, large-scale projects.

What you'll be doing

• Designing, developing and maintaining Java-based applications.


• Building and integrating RESTful APIs and microservices.


• Working with Spring Boot and modern Java frameworks.


• Developing scalable, secure and high-performing solutions.


• Collaborating with architects, developers and DevOps teams.


• Supporting testing, troubleshooting and continuous improvement.


• Working in an Agile development environment.

What we're looking for

• Strong commercial experience developing applications using Java.


• Hands-on experience with Spring Boot and microservices.


• Experience developing and integrating REST APIs.


• Good understanding of SQL and relational databases.


• Experience with CI/CD pipelines, Git and automated testing.


• Exposure to cloud technologies such as AWS or Azure would be beneficial.


• Experience working within Agile/Scrum teams.


• Active UK SC Clearance.