Safiullah Rattar

Full Stack & AI Engineer | React, Angular, Spring Boot & AWS

Full-stack products in React, Angular & Spring Boot, powered by AI workflows: RAG pipelines, LLM orchestration, and production AWS deployments.

Project Archive

Parhako

EdTech Platform

AI study platform with RAG pipelines, structured output parsing, mock tests, and exam workflows. 2,500+ active users. Processes 20,000+ practice questions. Built with Next.js, PostgreSQL, LangChain, and AWS: EC2, ECS, SQS, S3, SES, CloudWatch.

View Project →

Contract Work

Trading data pipeline. Automated news gathering, market scanning, statistical analysis for real-time trading. Python, WebSocket, PostgreSQL, AWS ECS with CloudWatch monitoring. Circuit breakers, risk checks, position tracking.
University LMS. Course registration, student/instructor/admin workflows, assignments, exams, grading, dashboards, WCAG-aware forms. React, Node.js, PostgreSQL, Prisma.
Patient management platform. Django app embedded into healthcare SaaS with JWT iframe sessions, RBAC, patient records, appointments, billing, and PostgreSQL APIs.
Warehouse terminal. Legacy terminal interfaces rebuilt in Angular, Java/Spring Boot with REST APIs, WebSocket streaming, PostgreSQL, and Dockerized deployments. Offline-capable mobile interfaces.
Client-screening app. React Native app with QuickBooks financial data, background checks, contractor risk scoring, reporting workflows, TypeScript, and PostgreSQL.
Operations dashboards. Admin workflows that moved spreadsheet/manual processes into web forms, REST API flows, PostgreSQL-backed records, and status tracking screens.

Skills

Java
Python
TypeScript
React
Angular
Spring Boot
Next.js
Node.js
Django
Express
MongoDB
PostgreSQL
AWS
Docker
Terraform
CI/CD
LLMs
RAG
LangChain
Vector Search

Contact