Senior Backend Engineer for Scalable SaaS Platform

Catonetworks; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Cato Networks is seeking an intelligent and passionate Software Engineer to join a team expanding our cloud-native platform and backend services. You will design and build scalable systems that process data across distributed networks and power new product capabilities.

The role requires 6+ years backend experience (Java/Go), strong data stores, and SaaS microservices know-how, plus collaboration with product, research, and automation teams.

Qualifications

• 6+ years of backend development experience in Java, Go, or similar.
• Experience with relational and NoSQL databases and production SaaS microservices.
• Strong knowledge of system design, scalability, and security.
• CI pipelines, testing, and monitoring experience.
• Familiarity with frontend tech (React/TypeScript) is a plus.

Responsibilities

• End-to-end development of backend services and APIs for scalable SaaS.
• Design and implement platform capabilities for growth initiatives.
• Build reliable systems for data collection, aggregation, and analysis.
• Collaborate with product, research, and automation teams.
• Evaluate new technologies to accelerate product evolution.

Skills

Backend development

Java

Go

Play Framework

Spring Boot

Relational databases

NoSQL databases

SaaS microservices

System design

Security

CI pipelines

Testing/Monitoring

React

TypeScript

BSc Computer Science

Education

BSc Computer Science

Tools

PostgreSQL

MySQL

MongoDB

Redis

Job description

Cato Networks is seeking an intelligent and passionate Software Engineer to join a team expanding our cloud-native platform and backend services. You will design and build scalable systems that process data across distributed networks and power new product capabilities.

The role requires 6+ years backend experience (Java/Go), strong data stores, and SaaS microservices know-how, plus collaboration with product, research, and automation teams.