Senior Backend Engineer - Billing & Commerce (Remote UK)

8x8, Inc.; United Kingdom; On-site; GBP 90,000 - 125,000; Full time

Job summary

8x8, Inc. in the United Kingdom is seeking a Senior Software Developer to help build reliable, scalable billing and commerce systems within a distributed backend stack. You’ll own components from day one and collaborate with product, design, operations, and finance teams.

The role is remote, full-time, and requires strong Java/Python experience, plus Spring Boot and cloud technologies. You’ll work on real problems like customer hierarchy, billing lifecycles, and integrations.

Qualifications

• 8+ years of experience designing and developing scalable backend
• BS/MS in Computer Science or equivalent technical field
• Proficient in Java or Python with focus on backend systems

Responsibilities

• Build and maintain scalable billing and commerce systems
• Collaborate with cross-functional teams across product, design, operations, finance
• Develop reusable backend components interfacing with other platforms
• Analyze and optimize code for quality, performance, and scalability
• Provide technical guidance and lead complex initiatives
• Architect efficient, scalable systems handling complex applications
• Identify and resolve performance bottlenecks

Skills

Backend engineering

Java

Python

Spring Boot

Spring Cloud

API design

OAuth security

Distributed systems

SQL databases

CI/CD

Education

BS/MS in Computer Science

Tools

Docker

Kubernetes

RabbitMQ

Kafka

OpenAPI/Swagger

Job description

8x8, Inc. in the United Kingdom is seeking a Senior Software Developer to help build reliable, scalable billing and commerce systems within a distributed backend stack. You’ll own components from day one and collaborate with product, design, operations, and finance teams.

The role is remote, full-time, and requires strong Java/Python experience, plus Spring Boot and cloud technologies. You’ll work on real problems like customer hierarchy, billing lifecycles, and integrations.