Java Software Engineer

Uniting Ambition; Welwyn Garden City; On-site; GBP 45,000 - 70,000; Full time

Benefits offered by this job

Medical insurance

Upskilling opportunities in DevOps and cloud

Flexible working environment

Job summary

Sivara GmbH in Welwyn Garden City is seeking a Backend Developer to design high-quality Java services using Spring Boot. You will work in a hybrid environment and take ownership of production systems, ensuring their reliability.

Ideal candidates will have several years of experience in Java, strong DevOps skills, and familiarity with cloud platforms, primarily Microsoft Azure.

Competitive compensation and opportunities for upskilling in cloud and DevOps are provided.

Qualifications

• Several years of experience delivering backend services in Java.
• Strong hands-on experience with Spring Boot.
• Understanding of distributed systems and cloud platforms.

Responsibilities

• Designing and developing Java backend services using Spring Boot.
• Building event-driven, microservices-based architectures.
• Taking ownership of services in production.

Skills

Java development

Spring Boot

SQL

NoSQL

DevOps practices

CI/CD tooling

Problem-solving

Tools

GitHub

Terraform

Kubernetes

Azure

Job description

Salary: £45,000 - 70,000 per year

Requirements

• Several years of experience delivering backend services in Java in production environments
• Strong hands‑on experience with Spring Boot and modern Java development practices
• A solid understanding of distributed systems, scalability, and reliability
• Experience working in a DevOps‑led environment, with ownership of live systems
• Familiarity with cloud platforms (Azure preferred, others acceptable)
• Exposure to CI/CD tooling such as GitHub Actions or similar
• Experience working with SQL and NoSQL databases
• Strong problem‑solving skills and the confidence to take ownership of technical decisions
• Nice to have experience with Python in backend, data, or automation contexts
• Nice to have exposure to AI/ML or large language model‑based systems
• Nice to have Kubernetes and container orchestration experience

Responsibilities

• Designing and developing high‑quality Java backend services, primarily using Spring Boot
• Building and operating event‑driven, microservices‑based architectures
• Taking ownership of services in production, including deployment, monitoring, and support
• Applying CI/CD best practices to enable reliable and frequent delivery
• Working with cloud infrastructure, primarily on Microsoft Azure
• Using Infrastructure as Code (e.g. Terraform) or developing the capability to do so
• Producing clear technical documentation to support system design and ongoing development
• Collaborating with engineers, platform teams, and stakeholders to deliver scalable solutions

Technologies

• AI
• Azure
• Backend
• CI/CD
• Cloud
• DevOps
• GitHub
• Support
• Java
• Kubernetes
• NoSQL
• Python
• SQL
• Spring
• Spring Boot
• Terraform
• microservices
• JIRA
• JVM
• PostgreSQL
• Splunk
• Zendesk

More

We are a fast‑growing technology organization located in the UK, specifically in Welwyn Garden City, offering a hybrid work environment. Our mission is to redefine how modern software platforms are built and operated. By joining us, you will work on scalable backend systems for data‑driven, event‑based products used by customers at scale. We provide genuine ownership of systems, opportunities for upskilling in DevOps, cloud, and platform engineering, and competitive compensation and benefits, including medical insurance.