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Usman F
@usman_choudhary
Level 2
Senior Backend and AI Engineer: FastAPI, AWS, RAG, LLM Solutions
Pakistan
English, Urdu, Arabic
About me
I’m a Senior Backend & AI Engineer specializing in FastAPI, AWS, and production-grade LLM systems.
I build scalable APIs, AI agents, RAG pipelines, and automation tools using Python, LangChain, and vector databases—with a strong focus on reliability, performance, and security.
Engineering-first approach:
Clean architecture, cloud-native deployment, clear documentation, and maintainable code. If you’re building AI-powered infrastructure, I’ll help you ship it the right way—from MVP to production.
Skills
Usman F
$30/hour
Offline •
Average response time: 1 hour
See my services
AI Integrations
I will build production ready ai agents, rag systems and llm saas apps
Troubleshooting & Improvements
I will rescue, fix and secure your vibe coded app built with lovable, bolt or cursor
Want to work on an hourly basis?
Tell Usman F what you need.
$30
/
hourPortfolio
Work experience
Senior Backend / AI Engineer
Disoriti • Full-time
Jan 2025 - Dec 2025 • 11 mos
Designed and launched Disoriti, an AI-powered ad generation SaaS for SMEs. ● Built a vision-aware dynamic layout system integrating CV + LLM pipelines for ad text placement. ● Developed multi-tenant backend architecture with secure API Gateway and JWT-based RBAC. ● Integrated LangChain-based orchestration for prompt enhancement, layout generation, and image generation (SDXL). ● Deployed production-grade services on AWS Fargate + Lambda with serverless triggers for usage-based pricing. ● Delivered a scalable pipeline capable of generating thousands of ads per day, reducing manual creative work by 70%.
Senior Software Engineer
BleedAi • Full-time
Jan 2024 - Dec 2024 • 11 mos
● Led backend development of SaaS product Upautomate, leveraging serverless + event-driven architecture. ● Built reusable microservice templates adopted company-wide, cutting dev time by 30%. ● Implemented FastAPI-based REST APIs with TDD, reducing post-deployment bugs by 40%. ● Automated workflows with AI integrations, boosting internal efficiency by 25%. ● Mentored junior engineers and introduced best practices for scalable AI backend development.
140 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 140 Reviews
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benoitpecqueur
Repeat Client
United States
Ursam delivered clean, reliable work on a complex project. Strong technical skills, communicates clearly, and hits deadlines without hand-holding. Exactly what you want in a developer. Will work with him again.
Helpful?
mbulandr
Repeat Client
United States
Usman represents the best in communication, delivery and understanding. He is shaping the work that I am doing in unbelievable ways, and I cannot express enough my deep appreciation for his thought leadership, partnership, and technical acumen. He has my highest recommendation!
Helpful?
bchua08
Singapore
Enjoyed working with Usman. He understood the project requirements very quickly and able to show results.
Helpful?
petersaur
United States
Helpful?
benoitpecqueur
Repeat Client
United States
Helpful?
