St1 Car Wash – Modernizing E-commerce with HiQ

St1 set out to improve its digital services, and the car wash e-commerce platform became a top priority. The old solution was outdated and difficult to maintain. Together with HiQ, St1 built a new platform that uses modern technology, creates a smoother customer experience, and simplifies management.

Client: St1
Industry: Energy products / fuels
Solutions Area: Digital Commerce

A digital car wash store consolidated on St1.fi

Previously, the car wash store operated on a separate website. As a result, customers had to navigate between different platforms, which made the process confusing. Today everything is integrated under St1.fi – including wash codes, receipts, purchase history, and user details. By consolidating into one platform, St1 made the customer journey easier and streamlined operations.

Microservice architecture for scalable e-commerce

St1 replaced its old monolithic system with a microservice-based architecture. This active step created a platform that is flexible, scalable, and ready for future business needs. In addition, the new architecture allows the team to add and adjust features quickly whenever requirements change.

Headless solution with Nuxt3 and Contentful CMS

The new platform relies on a headless front-end built with Nuxt3 and Contentful CMS for content management. Along with St1’s design system, these tools speed up development and ensure consistency across services.

With Contentful CMS and a shared design system, development becomes both faster and simpler. Components can be reused across multiple services, and thanks to the solution’s multichannel capability, the same backend works seamlessly across all platforms. Integration was also a key factor. Payment solutions and product information were seamlessly connected, resulting in a smooth shopping experience for customers and easier management for St1.

Service design with the customer in focus

Customer needs guided the entire project. St1 and HiQ used service design and workshops to map the purchase journey step by step. This process provided early insights into payment methods, technical requirements, and integration needs. Therefore, the team could remove obstacles, make faster decisions, and ensure the solution met real customer expectations.

Results: Faster, more secure, and customer-friendly

With the new platform, St1 can launch campaigns and services much faster than before. At the same time, the solution is easier to maintain, more flexible, and has passed an external security audit with excellent results.

For St1, this means a car wash e-commerce platform that is secure, scalable, and ready for future digital growth.

Key success factors

Everything consolidated on St1.fi – a simpler customer journey
Microservice architecture – flexible and scalable solution
Headless front-end (Nuxt3) – modern and adaptable user interface
Contentful CMS + design system – efficient development and reusable components
Seamless integrations – smooth payments and product information
Service design – solution based on real customer needs
Strong partnership – HiQ’s expertise combined with St1’s business knowledge