Browse categories
Explore
Fiverr Pro
English
$
USD
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
| (133) | ||
| (4) | ||
| (1) | ||
| (1) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 140 Reviews
Sort By
Most relevant
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.
6 days
Duration
AI Integrations
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!
1 day
Duration
AI Integrations
Helpful?
bchua08
Singapore
Enjoyed working with Usman. He understood the project requirements very quickly and able to show results.
2 weeks
Duration
AI Integrations
Helpful?
petersaur
United States
Helpful?
benoitpecqueur
Repeat Client
United States
Helpful?
