Senior Full Stack Developer (Backend-Focused) / Python / FastAPI

genieX; Malaysia; On-site; MYR 100,000 - 150,000; Full time

Job summary

A tech company in Malaysia is seeking a Senior Full Stack Developer focused on backend solutions. You will design and develop complex internal platforms such as CRMs and Inventory Systems using Python and FastAPI. Ideal candidates have over 5 years of full stack experience with a strong emphasis on backend architecture. Leadership skills are essential as you will guide a small team while ensuring high code quality and clean architecture. This position offers an exciting opportunity to drive impactful projects.

Qualifications

• 5+ years of full stack experience with emphasis on backend architecture and workflows.
• Strong background in Python backend development with FastAPI preferred.
• Experience with CI/CD pipelines and cloud deployments (AWS, GCP, or Railway).

Responsibilities

• Translate business operations into modular, maintainable backend workflows.
• Architect and build scalable, extensible internal applications and APIs.
• Lead a small engineering team, enforcing clean architecture and code quality.

Skills

Python backend development

Backend architecture

DevOps

Leadership

SQLAlchemy

FastAPI

Task orchestration (Celery/Dramatiq)

Tools

FastAPI

Celery

Pydantic

SQLAlchemy

Task queues (Dramatiq)

Job description

Senior Full Stack Developer (Backend-Focused) - Python / FastAPI

Add expected salary to your profile for insights

We’re looking for a Senior Full Stack Developer (Backend Heavy) to lead the design and development of complex, operations-heavy internal platforms — such as CRMs, Inventory Systems, and Vendor Management Tools.

If you’re strong in backend architecture, Python/FastAPI ecosystems, and asynchronous task orchestration (Celery or Dramatiq) — and can guide a small engineering team f — we’d love to connect.

Key Responsibilities

• Translate business operations into modular, maintainable backend workflows
• Architect and build scalable, extensible internal applications and APIs
• Design and implement robust backend logic using FastAPI, SQLModel/Pydantic, and task queues (Celery/Dramatiq)
• Oversee API integrations, background job orchestration, and workflow automation
• Lead a small engineering team, enforcing clean architecture, code quality, and delivery standards
• Collaborate with UX and frontend teams (React/Next.js) for seamless integration

Requirements

• Strong background in Python backend development (FastAPI preferred)
• 5+ years of full stack experience with emphasis on backend architecture and workflows
• Hands-on experience withFastAPI, Pydantic, SQLAlchemy, Celery/Dramatiq, and task-based architecture
• Solid understanding of database design, optimization, and migrations
• Experience building modular service layers and integrating third-party APIs
• Adept in DevOps, CI/CD pipelines, and cloud deployments (AWS, GCP, or Railway)
• Frontend familiarity — enough to guide React/Next.js developers and review PRs
• Excellent leadership, estimation, and communication skills — comfortable mentoring and unblocking other devs
• Bonus: Experience with Dramatiq and knowledge of refine.dev framework

Preferred Stack

• Backend: Python, FastAPI, SQLAlchemy, Pydantic, Celery/Dramatiq
• Frontend: React, Next.js

To Apply

Please share:

• Links or descriptions of internal tools/platforms you’ve architected or led
• Examples of backend-heavy projects where you designed core workflows or async systems
• Any relevant GitHub, portfolio, or case studies showcasing your Python/FastAPI expertise