Senior Python Backend Engineer, Remote, Scalable APIs

Blackfluo.ai; Medellín; Remote; COP 380,409,000 - 570,613,000; Full time

Job summary

Blackfluo.ai is seeking a Senior Full-Stack Developer with a strong backend focus on Python to drive design and development of web and mobile applications.

You will primarily work on backend development (70%) with Python and Django/FastAPI, PostgreSQL, Redis, and cloud infrastructure (AWS), while contributing to frontend tasks (30%) using React and React Native. Join a fast-growing, remote-first startup and help turn business needs into scalable tech solutions.

Qualifications

• 5+ years in software development with strong backend in Python and a solid grasp of frontend technologies.
• Proficiency with Python, Django/FastAPI, PostgreSQL, Redis, and cloud infrastructure (preferably AWS).
• AI tools to support dev productivity and automation.
• Strong analytical mindset with a track record of solving complex issues and delivering high-quality results.
• Excellent written and verbal communication in English, ability to collaborate in a remote setup.
• Product mindset focused on user experience and scalable tech solutions.
• Self-driven, proactive, and comfortable in a distributed, agile startup environment.
• Bonus: experience in fintech, marketplaces, or scaling products in high-growth startups.

Responsibilities

• Lead the design and development of innovative web and mobile applications.
• Focus 70% backend development in Python, 30% frontend tasks using React and React Native.
• Architect scalable and reusable backend systems using Django or FastAPI.
• Build robust APIs with high performance, reliability, and security.
• Collaborate cross-functionally with product managers, designers, and stakeholders from concept to deployment.
• Optimize application performance and handle data processing and system integrations.
• Conduct code reviews and mentor junior developers; promote best practices.
• Use AI tools to streamline development workflows and enhance product features.

Skills

Python

Django/FastAPI

PostgreSQL

Redis

AWS

REST APIs

React/React Native

Job description

Blackfluo.ai is seeking a Senior Full-Stack Developer with a strong backend focus on Python to drive design and development of web and mobile applications.

You will primarily work on backend development (70%) with Python and Django/FastAPI, PostgreSQL, Redis, and cloud infrastructure (AWS), while contributing to frontend tasks (30%) using React and React Native. Join a fast-growing, remote-first startup and help turn business needs into scalable tech solutions.