Senior Python Developer (Remote- Contract)

Senior Python Developer (Remote- Contract)

Company:

Minimum Experience -

Start Date

Job Type:

Working Days -

Annual Paid Leave:

Company’s India HQ:

Company’s Global HQ:

Company’s Main Client Base:

Key Contacts: CEO, Head of Web Development

Blurn/Bismath

About the Project

AI-driven analytics and marketing information serving platform

Key Responsibilities

• Architect and develop a scalable Python backend for API integrations, AI workflows, and chatbot functionality.
• Implement

  LangChain

  and

  LangGraph

  for AI orchestration and multi-agent workflows.
• Integrate with

  n8n

  (or similar) for workflow automation.
• Build and secure

  RESTful APIs

  connecting backend services, frontend, and external platforms.
• Design, optimise, and manage

  PostgreSQL

  (advanced queries, indexing, partitioning) and

  MongoDB

  databases.
• Develop data pipelines and normalisation workflows for multiple marketing and analytics APIs.
• Implement containerisation strategies using

  Docker

  for consistent deployments.
• Deploy and manage applications across

  AWS, GCP, and Azure

  .
• Ensure application security, performance optimisation, and scalability.
• Collaborate with frontend developers to ensure smooth integration.
• Stay updated with

  LLM advancements, RAG, and AI workflow orchestration

  .

Tech Stack

Core Platform for the Whole Project:

• WordPress (PHP) – Authentication layer
• React – User dashboard (frontend)
• Python – Backend AI processing & orchestration
• PostgreSQL & MongoDB – Structured & unstructured data storage
• n8n – Workflow automation
• ChatGPT API – AI analytics & insight generation
  

Languages & Frameworks:

• Python 3.11+
• FastAPI (preferred) / Flask (for legacy services)
• Pydantic v2
• Celery or Dramatiq (async tasks)
• httpx or aiohttp (async API calls)
  

Databases & Storage:

• PostgreSQL (indexing, materialised views, JSONB, partitioning)
• MongoDB for unstructured data
• Redis (caching, rate limits, queues)
• S3 or object storage
  

Security:

• cryptography, pyjwt, passlib
• OAuth2 / JWT / token rotation
• Secrets management (HashiCorp Vault / AWS Secrets Manager)
• HTTPS / SSL certificate handling
  

DevOps & Deployment:

• Docker, Docker Compose
• GitHub Actions / GitLab CI
• AWS, GCP, Azure
• Load balancing, failover, auto-scaling
  

Data & AI Integration:

• pandas, polars, Dask
• ChatGPT API with function calling
• Prompt engineering & caching
• Data normalisation from APIs
  

Testing & QA:

• pytest, pytest-asyncio
• httpx, TestClient (FastAPI)
• Contract testing for APIs
  

Requirements

• 10+ years of hands-on Python backend development.
• Proven expertise in LLM Powered Apps, using

  LangChain

  ,

  LangGraph

  , etc.
• Strong understanding of

  RAG

  and multi-agent AI systems.
• Experience with

  n8n

  or similar automation tools.
• Advanced PostgreSQL and MongoDB skills.
• Strong REST API development and integration experience (OAuth2, JWT).
• Proficiency in containerisation (Docker); Kubernetes a plus.
• Good working knowledge of React to collaborate with frontend teams.
• Experience integrating external marketing and analytics APIs.
• Cloud deployment experience (AWS, GCP, Azure).
• Strong understanding of application security best practices.
  

Preferred Skills

• AI-powered SaaS product experience.
• ChatGPT API & prompt engineering.
• Familiarity with GDPR, CCPA compliance.
• Marketing analytics or ad tech platform experience.