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Avenga

Senior Python Developer

Avenga Banja Luka, Republika Srpska, Bosnia and Herzegovina

IT Services and IT Consulting · 5,001-10,000 employees

7 h ago
python Senior (5-10 yrs) Full-time Serbia
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About the role

Develop and optimize backend services and APIs using Python, FastAPI, and SQLAlchemy. Design event-driven integrations and modernize backend architecture to ensure scalability and maintainability.

What they look for

Python FastAPI SQLAlchemy REST APIs RabbitMQ Event-driven architecture SQL Microservices Distributed systems Git CI/CD Docker Kubernetes OpenShift RBAC JWT

Requirements

Requires 7+ years of backend engineering experience with strong Python expertise. Candidates must have proficiency in microservices, distributed systems, and modern DevOps tools like Docker and Kubernetes.

Benefits

Collaborative team environment Professional growth opportunities Long-term project engagement

Full description

Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets.

At the core of the role

We are looking for a Senior Python Developer to join a long-term ERP modernization project in the retail domain. You will build and optimize backend services, improve system architecture, and develop integrations supporting operations across multiple European markets.

You will collaborate with a cross-functional Scrum team of developers, QA engineers, Product Owners, and Operations specialists, contributing to technical decisions and scalable solutions.

Core skills you’ll bring

  • 7+ years of backend engineering experience with strong Python expertise
  • Strong knowledge of FastAPI, SQLAlchemy, and REST APIs
  • Experience with RabbitMQ, event-driven architecture, and asynchronous communication
  • Strong SQL skills, including ORM performance and query optimization
  • Experience with microservices, distributed systems, and service decomposition
  • Knowledge of Git, CI/CD, Docker, and Kubernetes/OpenShift
  • Understanding of authentication and authorization (RBAC, ABAC, JWT)
  • Advanced English and strong communication skills

Nice-to-have

  • GitLab CI/CD, GitOps, and monitoring tools (Prometheus, Grafana, Sentry)
  • Microsoft/Azure identity and access management experience
  • Experience with AI-assisted development tools

The impact you'll create

  • Develop and optimize backend services and APIs using Python, FastAPI, and SQLAlchemy
  • Design event-driven integrations and modernize backend architecture for scalability and maintainability
  • Improve database performance, security, and system reliability
  • Support CI/CD, deployments, and production troubleshooting while collaborating with cross-functional teams

 What supports your journey

  • Long-term project with meaningful technical challenges
  • Opportunity to influence architectural decisions
  • Collaborative team environment and continuous professional growth

People are at the core of Avenga. We provide equal opportunities regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. We are committed to a respectful environment where everyone can be themselves, share their ideas, and feel that they belong.

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