Senior Backend Engineer (Python)

The role

Nebius Billing team implements data streaming, real-time analytics and business logic for managing user accounts. Our tasks include calculating and detailing the cost of the services provided, applying discounts mechanics, working with accounting systems and payment gateways.  

We’re looking for a software developer in Control Plane team to build a billing system that can stand alongside the products of the largest cloud services. 

Control plane is responsible for various client-related business logic like user registration, special offers set up and keeping track of clients’ paid resources. The team is also responsible for processes around products catalogue: providing it to external and internal users, building convenient workflows and processes for various teams, ensuring its integrity, decreasing time-to-market for new products and regions. 

Team's tasks include: 

• development of special offers and discounts engine
• development of products catalogue management system
• development of a partner CRM system
• development of tools for Commercial Operations team  

Control plane has many external dependencies. Most scenarios require data consistency in several different services at the same time so there are a lot of distributed transactions. We also pay attention to fault tolerance – we must keep our services available 24/7. 

Technology 

• Python, SQL Alchemy, Pydantic, Temporal
• YDB as OLTP database
• Our code runs on top of the Nebius infrastructure, using all of its features. 

Team and development approach 

• We use scrum but primarily focus on the effectiveness of the team, not on methodology. Medium-term planning is carried out on the horizon for three months, once a month we compare expectations with our stakeholders 
• We pay great attention to technical debt and infrastructure tasks. Our first priority is the stability of the installation and the readiness to increase the load. We dedicate about 20% of the team's time to working on technical debt 
• Any changes to the code are code-reviewed. We write unit, functional, and integration tests. Each of the supported environments has its own staging.
• We don’t have dedicated SREs and QAs, and we have on-call shifts. We believe that only the creator of the service knows where its weaknesses are and what needs to be done to automate its support.
• We will be glad to see both candidates who prefer to work in the office and those who are ready to consider only working from home.