You will get a REST API backend built with Python FastAPI or Node.js
Project details
You will get a production-ready REST API built with Python FastAPI or Node.js, clean architecture, JWT authentication, optimized PostgreSQL schema, Redis caching, and full documentation delivered with the source code. Every project starts with a written technical plan covering endpoints, database design, and auth flows before any code is written so you know exactly what is being built. I am a Staff-level Backend Engineer with 5 plus years building APIs for SaaS platforms, e-commerce backends, and enterprise systems. Named Employee of the Year 2024 for technical reliability and delivery excellence. No shortcuts, no spaghetti code, just backend systems that hold up when load increases and scale without rearchitecting.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$200
|
Standard
$450
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 4 days | 7 days | 12 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 1 | 1 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$30About Muhammad Massab
Backend Engineer | Python, Node.js, PostgreSQL, Redis, Docker & AWS
Lahore, Pakistan - 2:30 am local time
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BACKEND DEVELOPMENT
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REST API and Microservices Architecture: Production-grade APIs and microservices using Python FastAPI, Django, Node.js Express, and PHP Laravel — clean boundaries, predictable behavior, and proper separation of business logic from infrastructure. Every API designed to handle load increases and upstream changes without breaking.
Multi-Tenant SaaS Backends: Role-based access control, JWT and OAuth authentication flows, WebSocket infrastructure for real-time features, and multi-tenant data isolation, built for SaaS products that need to scale without rearchitecting.
Database Design and Optimization: PostgreSQL and MySQL schema design with complex query optimization, indexing strategies, and zero-downtime migrations. MongoDB for document-based storage, Redis for caching, session management, and queue systems, Celery for background job processing.
Third-Party API Integrations: Payment systems, CRMs, communication platforms, and SaaS tools connected via webhook infrastructure and event-driven architecture — reliable integrations that handle failures gracefully and never lose data.
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AI-POWERED BACKEND SYSTEMS
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LLM Integration and AI Pipelines: OpenAI API and Claude API integrated into backend systems with structured prompt engineering, multi-step orchestration, memory management, and context handling built for production reliability — not chatbot demos.
RAG Architectures: Vector search, chunk-level retrieval, reranking layers, and pgvector integration — document retrieval systems where every AI decision is traceable back to its source context.
AI Agent Workflows: Backend agent systems that take real actions, use tools, and make decisions without breaking business logic — retry handling, fallback logic, and observable failure modes built in from day one.
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CLOUD & DEVOPS
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AWS infrastructure across EC2, RDS, S3, and Lambda with full ownership from provisioning to monitoring. Docker containerization for scalable deployments. CI/CD pipeline setup for automated testing and deployment. Dockerized production environments with proper logging, alerting, and failure recovery.
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TECH STACK
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Backend: Python, FastAPI, Django, Node.js, Express, PHP, Laravel
Frontend: JavaScript, TypeScript
Databases: PostgreSQL, MySQL, MongoDB, Redis, pgvector
AI/LLM: OpenAI API, Claude API, LangChain
Infra: Docker, AWS, GitHub, CI/CD
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PRODUCTION RESULTS
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Built LLM-powered backend for enterprise workforce planning running on Dockerized AWS with PostgreSQL and Redis — multi-step orchestration with retries, observability, and zero silent failures.
Built RAG-based document processing backend with versioned, auditable outputs for regulated enterprise workflows where accuracy is non-negotiable.
Architected AI-powered e-commerce backend handling real-time inventory, order processing, and product recommendations at scale.
Named Employee of the Year 2024 at DevStudio for leading backend development across multiple production platforms and mentoring engineering teams through architecture and code reviews.
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If your project needs a backend engineer who owns the architecture end to end, makes sound technical decisions without hand-holding, and ships systems that do not break when load increases or an upstream API changes, send me a message.
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My Skills:
Python, Node.js, PHP, JavaScript, TypeScript, FastAPI, Django, Flask, Express.js, NestJS, Laravel, REST API, API Development, API Integration, GraphQL, gRPC, WebSocket, Webhooks, OpenAPI, Swagger, PostgreSQL, MySQL, MongoDB, Redis, SQLite, DynamoDB, Elasticsearch, Cassandra, MariaDB, pgvector, Supabase, Backend Development, Backend Architecture, Microservices Architecture, System Design, Database Design, Serverless Architecture, Event-Driven Architecture, Multi-Tenant Architecture, SaaS Backend Development, AWS, Docker, Kubernetes, CI/CD, GitHub Actions, Jenkins, Terraform, Linux, Nginx, DigitalOcean, Railway, JWT, OAuth 2.0, Authentication, Authorization, Role-Based Access Control, API Security, Session Management, Query Optimization, Database Indexing, Redis Caching, Load Balancing, Performance Optimization, Background Jobs, Celery, Message Queues, Rate Limiting, Horizontal Scaling, Stripe, PayPal, Payment Gateway Integration, CRM Integration, Third-Party API Integration, Webhook.
Steps for completing your project
After purchasing the project, send requirements so Muhammad Massab can start the project.
Delivery time starts when Muhammad Massab receives requirements from you.
Muhammad Massab works on your project following the steps below.
Revisions may occur after the delivery date.
API Design, Build & Deployment
Review requirements, design database schema and API contracts, build all endpoints with auth and validation, deploy with Docker and deliver full source code and documentation.