Senior Python Backend Engineer for AI-Powered SaaS

JobCubby; Abu Dhabi; On-site; AED 360,000 - 600,000; Full time

Job summary

JobCubby is seeking a seasoned Python Backend Engineer to design, develop, and maintain scalable backend systems powering our AI-driven SaaS platform. You will build secure APIs, optimize databases, and contribute to high-availability architectures in a fast-paced product environment.

Responsibilities include implementing REST and GraphQL APIs, building microservices, integrating third-party services, and ensuring robust testing and security.

Qualifications

• 5+ years of professional Python backend development.
• Strong proficiency in Python programming.
• Solid experience with FastAPI, Flask, or Django.
• Strong understanding of REST API and GraphQL design principles.
• 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 and containerized applications.
• Understanding of CI/CD pipelines.
• 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, or Django.
• 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, MongoDB, 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 programming

REST API design

GraphQL design

Software architecture (OOP/SOLID)

Unit/Integration testing (PyTest)

CI/CD pipelines

Debugging and performance optimization

Git collaboration

Problem solving

Communication skills

Tools

Docker

Kubernetes

Git

Redis

MongoDB

PostgreSQL

MySQL

Job description

JobCubby is seeking a seasoned Python Backend Engineer to design, develop, and maintain scalable backend systems powering our AI-driven SaaS platform. You will build secure APIs, optimize databases, and contribute to high-availability architectures in a fast-paced product environment.

Responsibilities include implementing REST and GraphQL APIs, building microservices, integrating third-party services, and ensuring robust testing and security.