xEngineer (Backend oriented), Premium Billing Platform

Wix makes it possible for anyone to succeed online. Since 2006, we've grown to around 4,400 employees in 22 countries, launched over 40 products, and serve over 299 million users and their visitors worldwide. At Wix, we push you to innovate and evolve in non-traditional ways. We operate in collaborative, high-performing teams, building cutting-edge products and leveraging AI to redefine how our users create, manage and grow their dreams online.

Although we're already industry leaders in web creation and business, our work is nowhere near done. Our goal is to become the main engine of the Internet so we can create a more open web for all.

As a backend engineer at Premium billing platform, you'll play a key role in designing and building scalable backend services for our subscriptions, billing, and payment systems. You'll work on cutting-edge technologies to create resilient, API-first platforms and collaborate closely with cross-functional teams to deliver robust solutions. In your day-to-day, you will:

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.

An advantage

- Experience with billing, subscriptions, fintech, payments, or transaction-heavy systems
- Familiarity with payment providers like Stripe, Adyen, Braintree, PayPal, or similar platforms
- Expertise in high-volume migrations or modernizing large legacy systems
- Knowledge of event-driven systems, workflow orchestration, or distributed transaction patterns
- Hands-on experience with large-scale data and observability platforms

Responsibilities

Design and build backend services for subscriptions, billing, checkout, and payment execution at scale; Develop API-first domain models for subscriptions, orders, invoices, payment intents, and payment methods; Create resilient distributed flows using asynchronous processing, idempotency, retries, and failure-recovery mechanisms; Design systems that work across multiple payment providers while maintaining platform agnosticism; Improve production reliability and observability using metrics, logs, traces, and data-driven insights; Collaborate with Product, Payments, Data, Finance, and other teams to deliver end-to-end solutions

Requirements

4+ years of experience building backend systems in production; Strong software engineering fundamentals with hands-on experience designing complex backend systems; Experience with distributed systems and microservices architectures; In-depth understanding of API design, domain modeling, Object-Oriented Programming, and SOLID principles; Proven experience designing systems for reliability, scalability, consistency, and failure recovery; Expertise in asynchronous and event-driven architectures; Commitment to automated testing, clean code, and maintainable software design; Ability to troubleshoot complex production issues across multiple services and data sources; Strong ownership mindset, taking responsibility for critical systems from design to production; Curiosity and practical experience using modern AI-assisted engineering tools in development workflows; Strong communication and collaboration skills

Benefits

Build the platform that drives one of Wix's most essential business domains; Solve real-world distributed-system challenges involving money, subscriptions, payments, and millions of customers; Shape the architecture of a new billing platform, influencing its design and development; Tackle complex issues like migrations, reliability, consistency, payment routing, and lifecycle management; Collaborate with experienced engineers while having significant ownership and architectural impact; Leverage modern engineering practices, automation, data, and AI to build and operate robust systems; See your work directly impact Wix's products, customers, revenue, and the launch of new business models