Java Developer for Billing Market

Billing is one of Yandex Market's internal services that helps businesses calculate service costs for our partners, manages payments to partners, couriers, employees of sorting centers and pick-up points, and works on the transparency and verifiability of calculations.

The number of our partners, the services provided to them, and the data collected are growing rapidly—and simultaneously, the load on the service is increasing. Therefore, we are looking for a great Java developer who will strengthen our team and help make our service even better.

Some interesting facts about us:

• We work with terabytes of data in PG and YT * Our codebase has minimal legacy, and we actively fight the remnants * We write in Java 17–21 and also in Kotlin * We constantly expand the supported functionality: over the last two years, we have taken over payment management, offsetting, logistics billing, vendor billing * We work in a distributed format, but in Moscow and St. Petersburg, there is an established core team that regularly visits the offices

What tasks await you

Development and optimization of the core billing calculations You will be involved in implementing the logic for calculating the cost of new service types. Optimizing calculation performance for millions of transactions. Developing a system for adjustments and recalculations. Integrating with data sources (logistics, order processing, analytical systems, etc.—virtually all Market systems become data sources for Billing). Ensuring the integrity and accuracy of financial data. Developing mechanisms for verifying calculations, including using LLM.

Development of the pricing system You will support and develop the Tariffnitsa—the tariff management system. Implementing complex tariff models and discounts. Automating tariff update processes.

Support for financial reporting This includes generating transaction logs for accounting systems, preparing data for the partner dashboard, preparing data and developing tools for financial analysts.

More about backend at Yandex—in the channel Yandex for Backend

We expect that you

• Have real experience in industrial development of commercial services
• Have been involved in development with Java, know Java Core well
• Know how to test your code
• Have conducted code reviews
• Know classical algorithms and data structures
• Work effectively in a team