Python Backend Engineer - FastAPI

BNCW Enterprises; Dwarka; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

BNCW Enterprises, a SaaS-focused digital services company, seeks a Backend Engineer to own and build the backend of a subscription-based platform. You’ll work across content APIs, payments, user management, and AI integrations, leveraging Python/FastAPI on AWS.

You will read existing code, take ownership, and drive improvements independently while collaborating with project managers and international stakeholders. This is a hands-on, building role.

Qualifications

• 4+ years of professional backend engineering experience in Python.
• Strong FastAPI skills with async patterns and dependency injection.
• Solid PostgreSQL knowledge: schema design, migrations, indexing.
• Experience with Stripe or similar payment and subscription APIs.
• Experience with AWS, Docker, and backend deployment workflows.
• Comfortable taking ownership of an existing codebase and improving it independently.
• Strong English communication for international clients.

Responsibilities

• Build and own backend services and APIs using Python and FastAPI.
• Develop content APIs, admin tooling, onboarding pipelines, and migrations.
• Integrate AI systems, including LLM APIs and knowledge retrieval.
• Implement real-time features with WebSocket-based messaging.
• Design and optimize PostgreSQL schemas, migrations, and queries.
• Manage AWS infrastructure (EC2, RDS, SES) and deployment workflows.
• Ensure production reliability with observability and Sentry.
• Focus on performance, scalability, and API hardening.

Skills

Backend development

English communication

Tools

Python

FastAPI

PostgreSQL

AWS

Docker

Stripe/Payments APIs

WebSocket

Sentry

CI/CD

LLM / AI APIs

Job description

We're hiring a Backend Engineer to own and build the backend of a subscription-based SaaS platform. The product includes gated content, video courses, AI-powered features, research tools, and real-time systems, built on Python/FastAPI with PostgreSQL on AWS. This is a hands-on, building role. You'll work across content APIs, payment integrations, user management, backend infrastructure, and AI system integrations.

You'll communicate directly with project managers and occasionally with technical stakeholders.

We need someone who can read an existing codebase, take ownership, improve systems proactively, and drive decisions independently. Not someone who waits to be told what to do next.

What You'll Work On

• Backend services and APIs built with Python and FastAPI
• Content management systems: gated libraries, video courses, and admin tooling
• User migration and onboarding pipelines
• AI system integrations: LLM APIs, context management, usage controls, and knowledge retrieval
• Real-time features using WebSocket-based messaging and community systems
• Database design, migrations, and query optimization in PostgreSQL
• AWS infrastructure: EC2, RDS, SES, Docker, and deployment workflows
• Backend reliability and production monitoring using Sentry, logging systems, and analytics tooling
• Backend scalability, performance optimization, and API hardening

Requirements

• 4+ years of professional backend engineering experience in Python
• Strong FastAPI skills including async patterns and dependency injection
• Solid PostgreSQL knowledge: schema design, migrations, query optimization, and indexing
• Experience with Stripe or similar payment and subscription APIs
• Experience with AWS, Docker, and backend deployment workflows
• Comfortable working with existing production systems and improving them incrementally
• Comfortable writing migration scripts that safely handle production data
• Familiarity with observability and debugging tools: Sentry, logging systems, analytics platforms
• Understanding of backend security best practices, authentication flows, and API hardening
• Strong English communication. You will work directly with international clients
• Comfortable taking ownership of an existing codebase and improving it without hand-holding.

Preferred

• Experience integrating LLM and AI APIs (OpenAI, Anthropic, or similar)
• WebSocket or real-time messaging experience
• Experience with fintech, SaaS, or content platforms
• Exposure to subscription or membership-based products
• Experience with CI/CD pipelines and deployment automation
• Worked with international teams across time zones

WORKING WITH US

We believe good work doesn't require burning people out. We respect boundaries, trust the people we hire. What we do expect is ownership. When something is yours, you care about it.

Work Location

Next to NSUT, Dwarka, Delhi 110059

ABOUT US

BNCW Enterprises is a digital services and SaaS-focused company building scalable websites, SEO systems, and AI products for startups, SMEs, and global clients. We’re a small, focused team, which means when you own something here, it actually matters.