Senior Python Backend Engineer | FastAPI & Microservices

List International Group; Abu Dhabi; On-site; AED 250,000 - 450,000; Full time

Job summary

List International Group seeks a Senior Python Backend Engineer to design, develop and maintain scalable backend systems powering an AI-driven SaaS platform. You will build secure APIs, integrate third-party services, and optimize databases while embracing clean architecture in a fast-paced product environment.

Responsibilities include building microservices, implementing authentication, and collaborating with cross-functional teams to ensure high availability and robust security in production.

Qualifications

• Minimum 3 years of professional experience in Python backend development.
• Strong proficiency in Python programming.
• Solid experience with FastAPI or Flask.
• Strong understanding of REST API and GraphQL design principles.
• Must know to design and implement event-driven Architecture Structure.
• Must know to implement Clean Architecture and established software design principles to create modular, maintainable, testable, and scalable backend systems.
• Experience building scalable backend architectures.
• Excellent knowledge of PostgreSQL and/or MySQL.
• Experience with NoSQL databases such as MongoDB or Redis.
• Strong understanding of software architecture, OOP, SOLID Principles, and Design Patterns.
• Experience with Git and collaborative development workflows.
• Knowledge of asynchronous programming (async/await).
• Familiarity with Docker, K8s and containerized applications.
• Understanding of CI/CD pipelines using Github Actions or Jenkins.
• Experience writing automated tests (PyTest, Unit Testing, Integration Testing).
• Strong debugging and performance optimization skills.
• Excellent analytical, communication, and problem-solving abilities.

Responsibilities

• Design, develop, and maintain scalable backend services using Python.
• Build production-ready applications using FastAPI, Flask.
• Design and implement secure RESTful APIs and GraphQL APIs.
• Develop scalable microservices and distributed backend systems.
• Integrate third-party APIs including payment gateways, CRM systems, AI platforms, communication services, and external SaaS providers.
• Design efficient database schemas and optimize complex SQL queries.
• Work with PostgreSQL, MySQL, Redis, RabbitMQ, MongoDB, Clickhouse, Typesense and other data storage technologies.
• Implement authentication and authorization mechanisms (JWT, OAuth2, API Keys).
• Write reusable, maintainable, and well-documented code following clean architecture principles.
• Build unit, integration, and API tests to ensure application reliability.
• Monitor, troubleshoot, and optimize backend performance in production environments.
• Collaborate closely with Frontend Engineers, DevOps Engineers, QA Engineers, Product Managers, and AI Engineers.
• Participate in architecture discussions, code reviews, and technical planning.
• Maintain high standards for security, scalability, and code quality.

Skills

Python

Backend development

API design

Async programming

Git workflows

SOLID principles

Clean Architecture

Unit testing

Performance optimization

Debugging

Communication

Tools

FastAPI

Flask

PostgreSQL

MySQL

MongoDB

Redis

RabbitMQ

Clickhouse

Typesense

GraphQL

Docker

Kubernetes

GitHub Actions

Jenkins

PyTest

Elasticsearch

Nginx

Job description

List International Group seeks a Senior Python Backend Engineer to design, develop and maintain scalable backend systems powering an AI-driven SaaS platform. You will build secure APIs, integrate third-party services, and optimize databases while embracing clean architecture in a fast-paced product environment.

Responsibilities include building microservices, implementing authentication, and collaborating with cross-functional teams to ensure high availability and robust security in production.