Muhammad is available for hire
Hire MuhammadMuhammad Asad Fayyaz
Verified Expert in Engineering
Back-end AI Engineer and Developer
Lahore, Pakistan
Toptal member since September 21, 2026
Bio
Muhammad is a back-end AI engineer and solutions architect with 8+ years of experience building production AI/LLM systems and scalable back-end platforms. He specializes in Python, FastAPI, OpenAI APIs, RAG, AI agents, Celery, Redis, PostgreSQL, AWS, vector search, and microservices. Muhammad is experienced across healthcare, legaltech, eCommerce, and SaaS, from architecture and API design to deployment and automation.
Portfolio
Thryve Tech
FastAPI, Django, Amazon Web Services (AWS), LangChain, Microservices...
Optimal Health Network
Django, Amazon Web Services (AWS), Django Ninja, FastAPI, Amazon Aurora...
Code Athenes
FastAPI, Django, React, OpenAI APIs, LangChain, CI/CD Pipelines, Pytest...
Experience
- Artificial Intelligence (AI) - 8 years
- Python - 8 years
- System Design - 7 years
- Microservices Architecture - 7 years
- FastAPI - 6 years
- Large Language Models (LLMs) - 5 years
- AI Agents - 2 years
- RAG Pipelines - 2 years
Preferred Environment
Amazon Web Services (AWS), Python, FastAPI, Large Language Models (LLMs), AI Automation, Artificial Intelligence (AI), System Architecture, PostgreSQL, RAG Pipelines, AI Agents
The most amazing...
...multi-state US telehealth platform I've built verified insurance and automated prior authorization in seconds, not hours.
Work Experience
Solutions Architect
2025 - PRESENT
Thryve Tech
- Architected production AI/LLM platforms using Python, FastAPI, OpenAI APIs, RAG pipelines, vector databases, and cloud-native infrastructure.
- Designed and implemented LLM workflows, AI agents, semantic search, embeddings, and retrieval pipelines using LangChain, Pinecone, FAISS, and ChromaDB.
- Built scalable asynchronous back-end systems using FastAPI, Celery, microservices, and distributed task processing.
- Designed high-performance REST APIs and multi-tenant SaaS architectures supporting AI-powered applications and marketplace platforms.
- Engineered scalable AWS infrastructure using Docker, CI/CD pipelines, and cloud-native deployment patterns.
- Built ETL and document-processing pipelines for AI workflows, structured data extraction, and downstream analytics.
- Led architecture decisions, technical strategy, and proof-of-concept development for AI and back-end systems.
Technologies: FastAPI, Django, Amazon Web Services (AWS), LangChain, Microservices, Vector Search, RAG Pipelines, Celery, AI Agents, Large Language Models (LLMs), Artificial Intelligence (AI), Embedding Models, OpenAI APIs, Docker Compose, ECS, Auto-scaling Cloud Infrastructure, Redis Cache, Software System Architecture Development, Amazon Elastic Container Service (ECS), Query Optimization, System Architecture, Claude, API Integration, APIs, Technical Leadership, Back-end APIs, Back-end Development, AI Tools, AI-generated Code, AI Code, User Roles, Agentic AI, Model Context Protocol (MCP), AI-assisted Development, AI Voice Agents, LangGraph, Workflow Automation, Azure, Microsoft Azure, Coding, DevOps, Web Applications, Base44, RAG Systems, Dashboards, Scalability, Best Practices, Data Architecture, Data Security, Maintainability, Security, LLM Agents, Performance, Reliability, Auditing, Audits, Google BigQuery, BigQuery, Google Cloud, Solution Architecture, Software Architecture, Integrations, MySQL, DigitalOcean, Webhooks, SOC 2, Linux, AI Engineering, Claude API, Codex, Machine Learning
Senior AI Software Engineer
2023 - PRESENT
Optimal Health Network
- Built a real-time patient routing system using Celery Beat, Redis, Django Channels, and WebSockets, automatically assigning patients to available doctors and delivering near real-time notifications.
- Designed a configurable multi-state telemedicine architecture that allowed new states, patient types, and workflows to be launched through configuration instead of code changes.
- Built insurance eligibility and classification pipelines across Medicaid, Medicare, commercial insurance, PBM policies, pharmacy BIN/RX BIN mappings, anti-gaming rules, and automated escalation workflows.
- Designed scalable back-end services and asynchronous processing pipelines using Python, FastAPI, Django, Celery, Redis, PostgreSQL, and microservices architecture.
- Built data ingestion and ETL workflows for healthcare, insurance, and pharmacy data, supporting automated decision-making and operational workflows.
- Designed and deployed scalable AWS infrastructure using ECS, Aurora, S3, ALB, Terraform, Docker, Redis, and CI/CD pipelines.
- Integrated external APIs, webhooks, automation services, and AI/LLM capabilities into production healthcare workflows.
- Improved reliability and security with structured logging, monitoring, Snyk dependency fixes, role-based access control, and safe-to-rerun seed commands. Documented the work in ADRs, runbooks, and known-issue logs.
Technologies: Django, Amazon Web Services (AWS), Django Ninja, FastAPI, Amazon Aurora, Django Channels, Celery, PostgreSQL, Redis, Terraform, Docker, CI/CD Pipelines, OpenAI APIs, Data Ingestion Pipelines, ETL Pipelines, Prompt Engineering, Microservices Architecture, Large Language Models (LLMs), Artificial Intelligence (AI), Python, Amazon Elastic Container Service (ECS), Elasticsearch, Docker Compose, ECS, Auto-scaling Cloud Infrastructure, Redis Cache, AWS ALB, Software System Architecture Development, Query Optimization, System Architecture, Claude, Real-time Data Pipelines, Automation, API Integration, APIs, JavaScript, Back-end APIs, Full-stack Development, Back-end Development, REST, AI Tools, AI-generated Code, AI Code, Pipelines, Data Processing, User Roles, API Development, Healthcare Software, Healthcare Analytics, HIPAA, HIPAA Compliance, AI-assisted Development, Data Pipelines, Workflow Automation, Beautiful Soup, Full-stack, Coding, Front-end, Front-end Development, Data Engineering, DevOps, Pydantic, Document Parsing, Web Applications, CSV, Gmail, Insurance, ETL, Data Modeling, Data Integration, Dashboards, Scalability, ELT, Best Practices, Data Architecture, Data Security, Maintainability, Security, LLM Agents, Performance, Reliability, Google BigQuery, Software Architecture, Integrations, MySQL, Webhooks, SOC 2, SQL, Linux, AI Engineering, Agentic RAG Systems, Claude API, Codex, Machine Learning
Technical Lead
2023 - 2025
Code Athenes
- Led back-end and AI engineering for production SaaS and marketplace platforms using Python, FastAPI, OpenAI APIs, and scalable cloud architecture.
- Integrated LLM workflows, LangChain agents, RAG pipelines, embeddings, vector search, and AI services into production applications.
- Designed scalable microservices, asynchronous processing systems, and API-first architectures across multiple product domains.
- Built and optimized back-end services using FastAPI, Celery, databases, and distributed task processing for high-volume applications.
- Established CI/CD pipelines, deployment standards, and DevOps practices for reliable production releases.
- Led architecture reviews, technical planning, proof-of-concept development, and mentoring across back-end and AI initiatives.
Technologies: FastAPI, Django, React, OpenAI APIs, LangChain, CI/CD Pipelines, Pytest, Django ORM, Database Schema Design, Prompt Engineering, Vector Search, RAG Pipelines, Microservices Architecture, Celery, AI Agents, Large Language Models (LLMs), Artificial Intelligence (AI), Embedding Models, Query Optimization, ECS, Amazon Elastic Container Service (ECS), System Architecture, Real-time Data Pipelines, Software System Architecture Development, API Integration, APIs, Technical Leadership, JavaScript, Back-end APIs, Full-stack Development, Back-end Development, REST, AI Tools, AI-generated Code, AI Code, API Development, AI-assisted Development, Full-stack, Coding, Front-end, Front-end Development, DevOps, Web Applications, Tailwind CSS, TypeScript, Vite, RAG Systems, Dashboards, Scalability, Best Practices, Data Architecture, Maintainability, Security, LLM Agents, Performance, Reliability, Auditing, Audits, BigQuery, Google Cloud, Solution Architecture, Integrations, MySQL, DigitalOcean, Webhooks, SQL, Linux
Senior Software Engineer
2022 - 2023
Inovaqo
- Designed and developed back-end services, REST APIs, database schemas, and system integrations using Python, Django, PostgreSQL, Redis, and related back-end technologies.
- Implemented authentication protocols such as OAuth2.0 for secure access to 3rd-party services like Google Maps API or Facebook Graph API.
- Designed and implemented RESTful APIs for mobile applications using Django Rest Framework. Created custom database schemas to store application data in an efficient manner.
- Optimized database performance across PostgreSQL, MySQL, and MongoDB. Improved system performance through query optimization and Redis caching strategies.
- Built automated data extraction and ingestion workflows using Python and Scrapy, with configurable proxies, request handling, and structured data processing.
- Collaborated with other developers to debug code and review pull requests on GitHub. Participated in Agile Scrum meetings regularly to discuss progress on current sprints and plan future tasks.
- Performed unit testing of the developed code to ensure quality assurance.
Technologies: Django, Django REST Framework, Scrapy, PostgreSQL, MongoDB, Redis, PostGIS, Azure Database for PostgreSQL, Flask, FastAPI, Software Development Lifecycle (SDLC), React, Unit Testing, Amazon Web Services (AWS), Pytest, Architecture, Technical Documentation, Microservices, Mailgun, Twilio, NumPy, Pandas, ETL Pipelines, Django ORM, Database Schema Design, Query Optimisation, Jira, Scrum, GraphQL, Microservices Architecture, Celery, Next.js, Elasticsearch, Docker Compose, System Architecture, Automation, API Integration, APIs, Technical Leadership, JavaScript, Back-end APIs, Full-stack Development, Back-end Development, REST, Pipelines, Data Processing, User Roles, API Development, Data Pipelines, LangGraph, Node.js, ReportLab, Full-stack, Azure, Microsoft Azure, Coding, Front-end, Front-end Development, Data Engineering, Pydantic, Document Parsing, Web Applications, CSV, Tailwind CSS, TypeScript, Vite, ETL, Data Modeling, Data Integration, Dashboards, Best Practices, Maintainability, Integrations, DigitalOcean, Webhooks, SQL, Linux
Back-end Software Engineer
2019 - 2022
Enmass Energy (US)
- Built a cloud-based SaaS platform for supply chain and energy management.
- Developed REST APIs for logistics, billing, and supplier management systems.
- Designed PostgreSQL schemas for transactional and analytics data.
- Built front-end dashboards and analytics views using React.
- Integrated payment systems and implemented reporting dashboards.
Technologies: Python, REST APIs, PostgreSQL, Django, Django REST Framework, JSON Web Tokens (JWT), Google Cloud Platform (GCP), FastAPI, Mailgun, Twilio, Django ORM, Database Schema Design, Query Optimisation, Jira, Scrum, Celery, Docker Compose, App Development, Back-end Development, REST, API Development, Coding, Web Applications, Dashboards, Google Cloud, Integrations, MySQL, Webhooks, SQL, Linux
Associate Software Engineer
2019 - 2019
Phaedra Solutions
- Developed RESTful APIs using Django Rest Framework for complex data-driven applications.
- Integrated 3rd-party APIs and built webhook-based event systems.
- Collaborated with front-end developers to ensure smooth integration between UI and back-end logic.
- Configured web servers such as Apache, Nginx, and Gunicorn for the deployment of Django applications.
- Wrote reusable, testable, and efficient code using Python.
- Scraped webpages to extract data using Python, the BeautifulSoup library, and the Scrapy framework.
- Developed scripts to automate the process of scraping websites.
- Built back-end APIs, automation workflows, data extraction services, and deployment pipelines using Python, Django REST Framework, PostgreSQL, Nginx, and Gunicorn.
Technologies: Django REST Framework, Scrapy, Python, Django, FastAPI, PostgreSQL, Firebase Web SDK, Django ORM, Database Schema Design, Jira, Scrum, Celery, App Development, Automation, Back-end Development, REST, API Development, Beautiful Soup, Node.js, ReportLab, Coding, Web Applications, TypeScript, Integrations, Webhooks, Linux
Experience
AI Grading Platform
I architected and built a production AI grading platform for the automated evaluation of long-form legal essays, using OpenAI's GPT-4, structured grading rubrics, semantic analysis, and automated feedback generation. I designed scalable Python/FastAPI processing pipelines with asynchronous workers for large documents and multi-stage AI evaluation. I also implemented LLM workflows, prompt engineering, structured outputs, semantic comparison, and distributed processing using FastAPI, Celery, Redis, PostgreSQL, and AWS.
Smart Security Camera System
I built an AI-powered real-time security monitoring platform for multi-camera environments with human classification, configurable security zones, threat detection, video processing, and low-latency alerts. I designed high-concurrency back-end services using Python, FastAPI, Docker, and Supabase for real-time event processing and automated notifications. I integrated AI-driven detection workflows with scalable back-end APIs and cloud infrastructure.
AI Dog Marketplace
I built an AI-powered pet marketplace using lifestyle questionnaires and OpenAI-based breed matching to generate intelligent recommendations for prospective owners. I designed scalable back-end services using Python, FastAPI, PostgreSQL, and OpenAI APIs, along with marketplace workflows for wallet balances, moderation, secure payments, and Stripe Connect. I architected recommendation, transaction, and automation workflows for a multi-sided marketplace.
Telehealth Platform
I built a multi-state telemedicine back-end platform supporting the complete patient journey, including intake, insurance eligibility, provider routing, consultation workflows, prescription processing, pharmacy fulfillment, and prior authorization. I designed real-time and asynchronous services using Python, FastAPI, Celery, Redis, PostgreSQL, WebSockets, and a microservices architecture. I built configurable, state-based workflows, ETL pipelines, automated decision systems, external API integrations, and scalable AWS infrastructure, all managed with Terraform.
Drone Pilot Marketplace
I designed and built a scalable on-demand drone pilot marketplace with project matching, skill verification, real-time messaging, secure multi-party payments, and automated marketplace workflows. I developed back-end APIs and matching services using Python, Django, PostgreSQL, AWS, Stripe, and Stripe Connect, with secure webhooks and scalable cloud deployment.
Amazon FBA Inventory SaaS
https://ventory.one/I built an Amazon FBA inventory SaaS platform for multichannel inventory tracking, demand forecasting, warehouse synchronization, supplier planning, reorder automation, and cash-flow analytics. I designed back-end APIs, data synchronization workflows, and automation services using Python, Django, PostgreSQL, and cloud infrastructure. I built data pipelines supporting inventory forecasting, warehouse operations, and automated replenishment workflows.
Renewable Energy Platform
I built a cloud-based renewable energy SaaS platform for waste-to-energy logistics, live operational metrics, billing, analytics, and offline-capable mobile workflows. I designed back-end services and data pipelines using Python, Django, PostgreSQL, Celery, Redis, and cloud infrastructure. I supported scalable deployments using AWS, Docker, containerized services, and secure authentication workflows.
Education
2013 - 2018
Bachelor's Degree in Computer Science
Information Technology University - Lahore, Pakistan
Skills
Libraries/APIs
REST APIs, Back-end APIs, API Development, React, Stripe, Node.js, Pydantic, Claude API, Stripe Connect, Django ORM, Pandas, NumPy, Firebase Web SDK, ReportLab, Beautiful Soup
Tools
Celery, Claude Code, BigQuery, Codex, Jira, Docker Compose, Pytest, Terraform, Claude, Amazon Elastic Container Service (ECS)
Languages
Python, Python 3, JavaScript, TypeScript, SQL, GraphQL, HTML, CSS
Frameworks
Django, Django REST Framework, Django Ninja, Scrapy, LangGraph, Tailwind CSS, Agentic Frameworks, Flask, Next.js, JSON Web Tokens (JWT), Django Channels, React Native
Paradigms
Microservices Architecture, REST, Best Practices, Real-time Systems, DevOps, ETL, Maintainability, Scrum, Microservices, Unit Testing, App Development, Object-oriented Programming (OOP), Automation, Model Context Protocol (MCP), HIPAA Compliance
Platforms
Software Design Patterns, Grok, DigitalOcean, Linux, Amazon Web Services (AWS), Docker, Twilio, Mailgun, Google Cloud Platform (GCP), AWS ALB, Azure
Storage
PostgreSQL, MySQL, Data Pipelines, Data Integration, Google Cloud, MongoDB, Redis, Elasticsearch, PostGIS, Auto-scaling Cloud Infrastructure, Amazon Aurora, Redis Cache, Amazon S3 (AWS S3)
Industry Expertise
Insurance
Other
FastAPI, Database Schema Design, System Design, Architecture, Software Engineering, API Integration, Artificial Intelligence (AI), APIs, Back-end Development, Coding, Web Applications, Dashboards, Multi-tenant Architecture, Multi-tenant SaaS, SaaS, Solution Architecture, Startups, LLM Integration, Integrations, Webhooks, OpenAI APIs, ETL Pipelines, Real-time Data Pipelines, System Architecture, Query Optimization, Technical Leadership, Cursor AI, Full-stack Development, AI Tools, AI-generated Code, AI Code, Pipelines, Data Processing, User Roles, Agentic AI, Healthcare Software, Healthcare Analytics, AI-assisted Development, Workflow Automation, Full-stack, Data Engineering, Document Parsing, CSV, Base44, Data Modeling, Scalability, ELT, Data Architecture, Data Security, Security, LLM Agents, Performance, Reliability, Auditing, Audits, Google BigQuery, Go-to-market (GTM) Strategy, Software Architecture, Product Roadmaps, SOC 2, AI Engineering, Agentic RAG Systems, Machine Learning, RAG Architecture, CI/CD Pipelines, LangChain, OpenAI GPT-4 API, Pinecone, FAISS, RAG Pipelines, Embeddings, Vector Search, ChromaDB, Prompt Engineering, AI Agents, Query Optimisation, Data Ingestion Pipelines, Technical Documentation, Data Structures, Azure Database for PostgreSQL, Software Development Lifecycle (SDLC), ECS, Software System Architecture Development, AI Automation, Large Language Models (LLMs), Embedding Models, HIPAA, AI Voice Agents, Microsoft Azure, Front-end, Front-end Development, Gmail, Vite, Legal, RAG Systems
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