Backend Engineer – Billing Platform

Company Description

Job Description

As a Backend Engineer, you’ll join the team responsible for Wix’s Billing Platform, a core system serving millions of active subscription users at massive scale. Our mission is to build the next-generation billing system at Wix- a flexible and scalable platform that supports multiple verticals, diverse business models, and modern payment and subscription flows.  

In your day-to-day, you will:  

• Design, build, and maintain backend systems that support millions of subscriptions and high-traffic payment flows  
• Take part in shaping the new Wix Billing architecture, supporting multiple verticals and flexible payment models  
• Lead and contribute to architectural and design decisions in a complex distributed microservices environment  
• Improve existing systems by addressing scalability, performance, reliability, and maintainability challenges  
• Build API-first services that integrate with multiple internal platforms and external payment providers  
• Use data and AI-assisted tooling to optimize flows, analyze production behavior, and reduce operational overhead 

  At Wix, we believe our best work happens together. Our work model is fully in person, with 5 days a week from our office. Flexibility remains a core value at Wix and special requests are handled thoughtfully at the team level. 

• 4+ years of experience as a Backend Engineer  
• Strong background in system design and architecture, with hands-on experience building large-scale systems  
• Deep understanding of Object-Oriented Programming and SOLID principles  
• Experience working with microservices architectures and distributed systems  
• Passion for clean code, design quality, and Test-Driven Development  
• Experience working on high-scale, high-availability production systems  
• Curiosity and openness to using AI tools to improve development workflows, debugging, and system understanding  
• Strong communication skills in English; Hebrew is an advantage  
• A team player with a strong sense of ownership and responsibility  

We are Wix's Backend Engineering Guild. We provide integrated tools for microservice development within Wix to help improve developer productivity and best practices. These tools streamline the development process and reduce cognitive load allowing Wix Engineers to concentrate on their domain, architecture, and business logic. To handle high-scale traffic (over 500B HTTP requests per day) and 500+ daily deployments, our team of 500 Backend Engineers runs production across 19 distributed data centers and cloud vendors worldwide.