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Mostafa Shafaei

@mostafashafaei

Full-Stack Generative AI Engineer who built a hotel contract intelligence platform with RAG and validated extraction pipelines.

Turkey

Message

I built a hotel contract intelligence platform end to end, turning complex PDF and Excel contracts into structured, validated data. Its extraction pipelines combine RAG, embeddings, vector search, and multi-turn LLM processing.

I evaluated extracted fields against reviewed ground truth, improving accuracy from 84.9% to 87.2% across 1,100 fields. Prompt caching cut token usage by about 45% on a held-out test document.

At VeriPark, I built backend services and RESTful APIs, along with Angular features, for Internet and Mobile Banking products. I also co-developed an AI-assisted code migration tool and contributed to an AI-powered unit test creator.

At Tadkar, I led two development teams and developed enterprise systems, including an EPMS and an Angular workflow engine using Camunda and Form.io. Earlier, at Nezaja, I built a SQL Server data warehouse-based decision-support system and optimized queries and backend logic, reducing response times by 40%.

Experience

Work history, roles, and key accomplishments

Full-Stack Generative AI Engineer

Hotel Contract Intelligence Platform

Apr 2026 - Oct 2026 (6 months)

Designed and built a multi-tenant generative AI platform end to end, turning complex hotel contracts into structured data. Implemented RAG pipelines, evaluation against ground truth, and cost/reliability controls.

.NET Angular PostgreSQL Pgvector RabbitMQ Azure Document Intelligence OpenAI GPTs Docker AWS Python SignalR RAG Embeddings Vector Search Structured Outputs

Full-Stack Developer

VeriPark

Jan 2024 - Apr 2026 (2 years 3 months)

Built backend services and RESTful APIs in ASP.NET Core and SQL Server, plus Angular front-end features, for Internet and Mobile Banking products supporting 50,000+ concurrent users. Reduced backend response times by ~20% and contributed to AI-assisted code migration and unit test generation tools.

C#.NET Core ASP.NET Core SQL Server Angular TypeScript REST APIs Agile Scrum Azure OpenAI xUnit Coverlet OpenHands Aider

Full-Stack Developer

IranHotel

May 2023 - Dec 2023 (7 months)

Designed and built Scheduling and Pricing microservices with .NET Core and DDD, including a dual-calendar scheduler. Built an integration microservice for synchronous and asynchronous communication, contributing to an 18% reduction in data errors.

.NET Core DDD Microservices Mass Transit Event Driven Architecture SQL Server

Full-Stack Developer

Tadkar

Jun 2019 - May 2023 (3 years 11 months)

Led two development teams, mentored junior developers, and made key architecture decisions. Developed an Enterprise Project Management System on microservices and an Angular-based workflow engine with Camunda and Form.io.

.NET Angular EXT JS Razor SQL Server Camunda Formio Microservices DDD Code Review Mentorship

Backend Developer

Nezaja

Sep 2017 - May 2019 (1 year 8 months)

Designed and built a decision-support system based on a SQL Server data warehouse architecture. Optimized SQL queries and backend logic, reducing response times by 40% and supporting analytical reporting across 50+ departments.

SQL Server Data Warehouse Query Optimization Backend Development