Senior Python Backend Engineer – High-Load Microservices

BETBY; Barcelona; On-site; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Health insurance

Sick leave

Vacation and life events leaves

Learning and growth opportunities

Modern hardware

Job summary

Betby is building a complex, high-load microservice-based backend for risk management in sports betting. We value autonomy, ownership, and scalable engineering as we expand with a small, focused team.

Join our Risk-Management Product Group to develop back-office risk tools, integrate with Kafka and RabbitMQ, and contribute to architecture discussions. We offer modern hardware, international teams, and strong learning opportunities.

Qualifications

• Proven backend development experience with Python and asynchronous programming.
• Extensive microservice architecture experience (REST API, RPC).
• Strong knowledge of algorithms and data structures.
• Experience designing internal libraries / SDKs.
• Solid understanding of SOLID, DRY, KISS, YAGNI principles.
• Experience with stream processing and message queues.
• Experience with Kafka and RabbitMQ integration.

Responsibilities

• Develop and maintain high-load backend services using Python (asyncio).
• Design, support, and optimize microservice architecture components.
• Implement integrations with Kafka, RabbitMQ, and internal RPC services.
• Refactor and improve existing services for scalability and reliability.
• Write tests to ensure system stability.
• Collaborate with cross-functional teams and participate in code reviews.

Skills

Python

Asyncio

Microservice architecture

REST API / RPC

Algorithms & data structures

SOLID / DRY / KISS / YAGNI

SDKs / internal libraries

Stream processing

Tools

Kafka

RabbitMQ

MongoDB

Docker

Kubernetes

Prometheus

Grafana

ELK

Pydantic v2

Job description

Betby is building a complex, high-load microservice-based backend for risk management in sports betting. We value autonomy, ownership, and scalable engineering as we expand with a small, focused team.

Join our Risk-Management Product Group to develop back-office risk tools, integrate with Kafka and RabbitMQ, and contribute to architecture discussions. We offer modern hardware, international teams, and strong learning opportunities.