Sheikh Shapon
AI / LLM & Backend Engineer with 7+ years of experience building scalable backend systems and production-grade AI pipelines
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About
AI / LLM & Backend Engineer with 7+ years of experience building scalable backend systems and production-grade AI pipelines. Specializes in RAG architectures, leveraging vector databases like Pinecone and evaluation frameworks (Ragas) to deliver accurate, context-aware LLM applications and reduce hallucinations. Experienced in orchestrating multi-model LLM systems (OpenAI API, Google Gemini) within FastAPI microservices, backed by cloud-native infrastructure (AWS/GCP), IaC (AWS CDK, Terraform), and automated CI/CD pipelines.
Experience
Lead Freelance AI & Software Engineer at Self-Employed (2026-01 – Present)
- Built agentic AI and RAG pipelines
- Automated data enrichment systems
- Delivered high-accuracy B2B lead systems
AI / LLM Engineer (Backend Focus) — Remote at The Insights Company (New York, USA via Upwork) (2025-05 – 2025-12)
- Built production RAG pipelines
- Developed LLM evaluation frameworks
- Implemented FastAPI AI microservices
- Managed AWS cloud infrastructure
- Developed distributed web search agents
- Created vector retrieval systems
Data Engineer / Backend Lead (remote) at Torrance Analytics LLC (California, USA via Upwork) (2024-10 – 2025-04)
- Developed Elasticsearch search systems
- Built distributed ETL pipelines
- Automated cloud deployments
Python Data / Backend Engineer (remote) at ICS Inc. (Chicago, USA via Upwork) (2023-08 – 2024-09)
- Built secure backend systems
- Implemented CQRS architecture
- Integrated payment systems
Senior Backend Software Developer (onsite) at Yo Tech Ltd. (Sylhet, Bangladesh) (2020-10 – 2023-07)
- Built food delivery backend systems
- Scaled cloud infrastructure
- Developed payment processing systems
Full-Stack Developer (onsite) at Profile Ltd. (Dhaka, Bangladesh) (2018-04 – 2020-09)
- Built full-stack web applications
- Developed scalable backend systems
- Integrated secure payment processing
Education
M.Sc in Big Data Science and Technology – University of Bradford (2025-09)
B.Sc in Information Technology – International Open University, IOU (2018-08)
