Senior Python Engineer (Backend and Data)

GSSTech Group

📍 UAE

💼 Full-time

🕒 Posted 11 days ago

Job description

Role Overview

Senior Python Engineer (Backend and Data) at GSSTech Group. Design, build and run scalable backend systems that power data-driven applications.

Role Purpose

This role exists to develop secure, high-performance APIs and microservices, build backend services that serve datasets efficiently, and own data transformation pipelines from ingestion to delivery. The ideal candidate writes clean production code and takes ownership of how that code is tested, deployed and run in production.

Key Responsibilities

Backend and API Development

Design, develop and maintain RESTful APIs and microservices using Python (FastAPI, Flask, Django).
Build asynchronous, high concurrency services using asyncio and optimise I/O operations for performance.
Design and maintain scalable internal web frameworks and take them to production.
Work with front-end teams to integrate user-facing features with server-side logic.
Write clean, efficient, well-documented code that follows coding standards.

API Security

Implement authentication, authorisation and encryption across microservices.
Secure APIs using OAuth 2.0, JWT and API gateways.

Data Access and Database Management

Build backend systems that serve datasets through APIs and other interfaces.
Implement data access layers using ORMs such as SQLAlchemy and Django ORM (models, CRUD, querying, transactions).
Design and optimise database schemas for relational and NoSQL stores.
Tune query and database performance for fast, reliable data retrieval.

Data Transformation and ETL

Design and maintain ETL pipelines to extract, clean, aggregate and enrich data.
Ensure data integrity, quality and consistency across all transformation processes.
Work with big data and streaming technologies such as Spark, Kafka and Hadoop.

Engineering Practices and DevOps

Build and maintain CI/CD pipelines for automated testing and deployment.
Write unit and integration tests and debug production issues using logging and profiling tools.
Use Git for version control, branching, code reviews and pull requests.
Produce clear technical documentation and contribute to code reviews.

Qualifications & Experience

Bachelor's degree in Computer Science, Information Technology or a related field.
5+ years of professional experience in Python backend development.
Strong hands-on experience with FastAPI and/or Flask, plus working knowledge of Django.
Proven experience with asyncio and concurrent programming.
Experience building ETL or data transformation pipelines.
Experience building and maintaining CI/CD pipelines (Jenkins, GitLab CI, GitHub Actions, Azure DevOps).
Strong Git and collaborative development experience.

Skills & Competencies

Solid understanding of microservices architecture.
Experience securing APIs with OAuth, JWT and API gateways.
Strong SQL skills and experience with SQLAlchemy or Django ORM.
Experience with relational databases (PostgreSQL, MySQL, Oracle) and NoSQL databases (MongoDB, Redis, Cassandra).
Familiarity with big data technologies (Spark, Kafka, Hadoop) and data warehousing concepts.
Proficiency in Shell scripting.
Strong problem-solving skills and attention to detail.
Excellent communication skills with technical and business stakeholders.