Senior Full-Stack Engineer — React/Java/AWS SaaS

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

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.