Hashir Ahmed Khan

Hashir Ahmed Khan

CTO & Full-Stack Engineer specializing in AI-driven Backend Systems

Based in: PakistanCurrently: Senior Lead Engineer, Parchi PakistanExperience: 3 years

Hire me

Experienced CTO and backend-focused engineer with a strong background in building scalable NestJS systems and AI-powered applications using RAG and LLMs. He has successfully delivered over 50 projects, ranging from ride-hailing platforms to AI recruitment coordinators and complex ERP systems.

Experience

Senior Lead Engineer

Parchi Pakistanwork2026 – Present

Summary

Primary backend engineer on a student loyalty platform (live on the App Store); built NestJS + Prisma/PostgreSQL APIs covering student KYC, Parchi ID, merchant/offers, redemptions, notifications, auditing, and admin analytics

What I did

  • Secured APIs with JWT, rate limiting, Helmet, and audit logs; collaborated with Flutter and Next.js teams on API contracts

Results

  • Improved transaction integrity and reliability for the loyalty platform backend.
  • Scaled the API to handle 10,000 users.
NestJSPrismaPostgreSQLJWTHelmetFlutterNext.js

Chief Technology Officer

Cort TechnologiesfounderDec 2025 – Present

Summary

Early-stage startup CTO leading product engineering for Cort Technologies and its subsidiary Traflinq - a full-stack ride-hailing and smart-routing platform (NestJS backend, Next.js dashboard, Expo mobile app)

What I did

  • Shipped background location tracking, server-side geofencing, Redis deduplication, and FCM/APNs push for shuttle and chauffeur services; published Traflinq to the App Store
  • Own architecture, database design, auth, integrations, and production deployment across AWS and DigitalOcean
  • Balanced real-time tracking with database write frequency by keeping WebSocket updates lightweight
  • Throttled route and ETA recalculations to maintain responsive tracking without overloading the backend

Results

  • Reached around 10k users
  • Supported around 50-60 drivers sharing their locations simultaneously
NestJSNext.jsExpoRedisFCMAPNsAWSDigitalOcean

Freelance Full-Stack Developer

IndependentfreelanceOct 2022 – 2025

Summary

Delivered 50+ projects: web apps (Flask, Node.js, Hono.js), ETL pipelines, ML model deployments, data visualisation (Matplotlib), and web scraping (BeautifulSoup, Selenium, PySpark)

Results

  • Delivered 50+ projects
FlaskNode.jsHono.jsMatplotlibBeautifulSoupSeleniumPySpark

Skills

Technical

REST APIs
NestJS
Node.jsNode.js
Next.jsNext.js
React.jsReact.js
Express.jsExpress.js
TailwindTailwind
LLM API Integration
Prisma ORM
PostgreSQLPostgreSQL
RAG
JWT
OpenAI
Swagger/OpenAPI
DockerDocker
Claude
AI Agents
Embeddings
Vector Search
NLP
Hono.js
FlaskFlask
Socket.IO
WebSockets
React NativeReact Native
Expo
Shadcn
VectorDB
FirebaseFirebase
SupabaseSupabase
RedisRedis
VercelVercel
CASL RBAC
Tool Calling
Material-UI
Ant Design
JestJest
MongoDBMongoDB
MySQLMySQL
SQLiteSQLite
AWS
DigitalOceanDigitalOcean
Railway
DjangoDjango
CI/CD
FastAPIFastAPI
Helmet
MCP
PythonAnywherePythonAnywhere
Prompt optimization
Information Extraction
Ollama
Structured outputs

Projects

TAFS School ERP

professional
Modular NestJS backend (Auth, Students, Fees/Vouchers, Attendance, HR, Analytics, Chat) with CASL RBAC, JWT rotation, httpOnly cookies, and structured exception handling. Real-time messaging via Socket.IO + Redis adapter; FCM push via Firebase Admin; complex billing workflows (vouchers, deposits, installments, bulk jobs); Swagger docs and Jest coverage.
NestJSTypeScriptPrismaPostgreSQLSocket.IORedisFirebase FCMDockerJest

Tutorly

professional
Role-based platform (students/teachers/admin) with scheduling, contracts, Stripe payments, notifications, and a Gemini chatbot.
Next.jsTypeScriptNode.jsPostgreSQLStripeWhatsApp APIVercelRailwayGemini

HRMony AI

Final Year Project Leadacademic
Built an AI-powered HRMS with an LLM-based HR assistant for employee self-service and recruitment workflows. Developed a Retrieval-Augmented Generation (RAG) pipeline for answering HR policy questions from internal documents using document ingestion, embeddings, and vector search. Implemented an AI recruitment coordinator agent for candidate communication and interview scheduling. Built NLP-based resume screening to parse and rank candidates, and a virtual HR chatbot for employee queries.
NestJSTypeScriptPrismaPostgreSQLSupabaseJWTOpenAIDockerSwaggerRAGStructured outputsTool calling

Education

Bachelor of Science

FAST-NUCESComputer Science2022 – 2026

Thesis. HRMony AI

A-Levels

Highbrow College2020 – 2022

Recognition

Certifications

Generative AI Concepts

DataCamp

Large Language Models (LLMs) Concepts

DataCamp

Developing LLM Applications with LangChain

DataCamp

Complete Python Developer

Udemy

Complete Web Development Bootcamp

Udemy

Docker for the Absolute Beginner

KodeKloud

JavaScript Algorithms & Data Structures

freeCodeCamp

Responsive Web Design

freeCodeCamp
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