Senior Full Stack Developer

Keylane; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

Keylane UK is seeking a Full Stack Developer to build SiteView with React front-end and Java/J2EE back-end, in a Docker/AWS environment.

You will contribute across the development lifecycle, prototype features, write tests, and deploy, collaborating with a small team to deliver scalable SaaS for insurers. You will investigate issues, optimize performance, and ensure secure, maintainable code while translating business requirements into practical solutions.

Qualifications

• Experience building modern web applications with React and Java/J2EE.
• Strong understanding of HTML/CSS and front-end state management.
• Experience with Java build tools, SQL databases and ORM like jOOQ.

Responsibilities

• Develop SiteView features across front-end and back-end.
• Prototype, test and deploy new functionality.
• Investigate issues, fix bugs and identify performance bottlenecks.
• Write secure, maintainable and reliable code.
• Collaborate with teammates to translate requirements into solutions.

Skills

React

Redux Saga

HTML

CSS

Java/J2EE

J2EE

Maven

jOOQ

MySQL

Tools

Docker

AWS

Job description

We are looking for a Full Stack Developer to help us build and improve SiteView using React, Java and AWS. If you enjoy working across front-end and back-end development, solving technical challenges and collaborating with an experienced team, we’d like to meet you!

Key about your role

As a Full Stack Developer at Keylane UK, you help develop SiteView, our digital claims platform. SiteView enables insurers to automate workflows, manage digital site visits and connect customers, claims teams and suppliers throughout the claims process. Your work helps make that experience easier to manage and follow. Keylane

You contribute throughout the development lifecycle, from prototyping and developing new features to testing and deployment. On the front end, you work with JavaScript, React, Redux Saga, HTML and CSS. On the back end, you use Java/J2EE, Maven, jOOQ and MySQL, with Docker and AWS forming part of the wider development environment.

Alongside building new functionality, you improve what is already there. You investigate application issues, resolve bugs and identify performance bottlenecks. You follow sound development practices and take responsibility for writing code that is secure, maintainable and reliable.

You work closely with fellow developers and colleagues across the business to understand requirements and translate them into practical solutions. Whether you are exploring a new feature or troubleshooting an existing one, you combine technical curiosity with attention to detail.

Key about your team

You join a small team of experienced developers working on SiteView. Together, you build secure, scalable SaaS software for enterprise customers.

Collaboration is an important part of the role. You discuss technical challenges, share knowledge and work with colleagues from other departments. You are comfortable progressing your own work independently, while knowing when to involve others and work through a problem together.

About Keylane Property & Casualty

Keylane develops SaaS platforms that help insurers modernise their operations and improve the service they provide to customers. Our Property & Casualty portfolio includes Axon and SiteView, bringing together core insurance software and digital claims capabilities. SiteView works alongside existing core systems, helping insurers improve their claims processes without replacing their entire technology landscape.