Senior Server Engineer

About Wix

Wix makes it possible for anyone to succeed online. Since 2006, we’ve grown to around 5,300 employees in 22 countries, launched over 40 products, and serve over 282 million users and their visitors worldwide. At Wix, we push you to innovate, evolve in non-traditional ways, and collaborate. We operate in small teams that work closely together at a high level. 

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.

We're proud to be an equal opportunity employer. Wix was built around the idea that everyone has the right to be successful, online. This same vision defines us as a company: creating a work environment where everyone is welcome, and anyone has the right to succeed.

Job Description

As a Senior Server Engineer, you'll design, develop, and optimize scalable server solutions, collaborate with cross-functional teams, and implement cutting-edge AI methodologies to enhance customer care products. In your day-to-day, you will: 

• Conduct research and experiments to explore innovative AI methodologies and incorporate cutting-edge models into customer care products
• Take responsibility for the entire lifecycle of feature developments, from initial discussions with product teams, defining requirements and providing estimates, to actual coding in collaboration with the team, monitoring performance and delivering robust solutions to end-users
• Optimize system performance, reliability, and stability, ensuring our service remains seamless and accessible 24/7
• Participate in technical discussions to improve existing architecture and developer experience
• Collaborate extensively with Business Analysts, Data, Product, and Platform teams, utilizing a data-driven approach to solve ambiguous user problems and ensure the server infrastructure optimally supports product features and user experience

Requirements

• 5+ years of experience as a Server Engineer
• Experience in designing and maintaining highly scalable, loosely coupled server solutions, following best practices and standards
• Proven experience leading technical discussions, conducting design reviews, and collaborating effectively with cross-functional teams to drive architectural decisions and resolve complex engineering challenges
• Experience with Vespa or similar large-scale search and ranking engines (e.g., Elasticsearch, Solr, Weaviate) for real-time data retrieval, vector search, or personalized content delivery
• Proficiency with Large Language Models, including prompt engineering, fine-tuning, automatic evaluation, and Retrieval-Augmented Generation (RAG) – an advantage
• Passion for product development and understanding of business objectives and goals
• Advanced English proficiency

About the Team

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.