YRYasir.dev
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Available for select projects — 2026

AI automation that answers your leads and grows your sales.

I'm Yasir Rehman, an AI automation & full-stack developer, Top Rated on Upwork & Fiverr. I build WhatsApp & AI lead follow-up, CRM/ERP systems and web apps for real estate, logistics, hospitality and FinTech businesses — so leads get answered in seconds, nothing falls through the cracks and your team spends its time on sales instead of busywork.

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Start a projectView work
  1. 1ReviewWhat slows you down
  2. 2AutomateMake it run itself
  3. 3GrowGet more sales
Built for
  • Real Estate
  • E-commerce & Retail
  • Hospitality & Restaurants
  • Logistics & Transport
  • Healthcare & Clinics
  • Education & Training
  • Labs & Testing
  • FinTech
  • Manufacturing

Your whole business ecosystem, built and connected

One partner from getting found online to more clients and more sales — every piece talks to the next.

  1. 01Get foundLook professional online
    • Business websites
    • E-commerce stores
    • Landing pages
    • Social media pages
    More people find you
  2. 02Get leadsTurn visitors into enquiries
    • Digital marketing
    • SEO & Google ranking
    • WhatsApp & lead forms
    • Booking & quote forms
    More enquiries every week
  3. 03AutomateLet the daily routine run itself
    • AI chatbots
    • WhatsApp follow-up
    • CRM & lead tracking
    • Daily task workflows
    No lead missed, hours saved
  4. 04Grow salesTurn enquiries into paying clients
    • Sales pipeline & quotes
    • Repeat-customer follow-ups
    • Business mobile apps
    • Sales dashboards & reports
    More clients, more sales
Already have a website or software? I can add AI to it — smart replies, automatic reports and chat on your own data.Add AI to my business →
How we work together

From first call to a working system

Four clear steps. You always know what's being built, what it costs and when it's ready.

01
Discover: what you get
  • Free 30-min discovery call
  • Goals, users & budget mapped
  • What to build first
Book a free discovery callFixed price before work starts · weekly demos · a reply within 24 hours
AI Systems — Always On

I build AI-powered systems that run your business while you sleep.

From chatbots to full CRM/ERP platforms — AI woven into systems built for real businesses, not demos.

Explore AI & AutomationStart an AI project
OpenAI APIClaudeAzure OpenAIn8nWhatsApp Cloud API
ai-agent · yasirrehman.dev Online
Autonomous · 24/7No-code handover
Where it shows up in your business

AI Chatbots & Virtual Agents

24/7 agents that qualify leads, answer customer questions and book calls — on your website or WhatsApp.

AI-Powered Mobile Apps

Cross-platform apps with smart search, recommendations and in-app assistants built in from day one.

Smart Business Websites & Tools

SEO-ready sites and internal tools that automate reporting, admin work and daily busywork.

CRM & ERP for FinTech and Real Estate

Lead pipelines, billing and property/lending dashboards tailored to how your business actually runs.

Hospitality & Manufacturing Systems

Booking, inventory and production tracking for hotels, factories and foam/industrial manufacturers.

Workflow & Business Automation

Autonomous pipelines that replace manual spreadsheets, approvals and repetitive data entry.

Workflow Automation

Your busywork, turned into a workflow

A typical lead-automation flow I build with n8n, webhooks and AI — every step runs on its own.

Trigger

New lead arrives

WhatsApp, Facebook, TikTok or your website form

AI

Qualify & reply

AI answers instantly and asks the right questions

Action

Update your CRM

Lead created, scored and assigned to the right person

Notify

Alert your team

Hot leads pushed to WhatsApp or email in real time

Schedule

Follow up automatically

Reminders go out until the lead replies — no one forgets

n8nZapierMakeWebhooksOpenAI APIWhatsApp Cloud API

Real example: PropFlow CRM automates WhatsApp lead capture, replies & follow-ups →

Selected Work

Systems shipped for real businesses

Case Study

POS, Sales, Purchase & Ledger Management System

POS, sales, purchase, and ledger management for small and medium businesses — plus stock, accounts, and team access, all in one dashboard.

All-in-one: POSpurchases & ledger
Read the full breakdown
POS, Sales, Purchase & Ledger Management Systemdashboard · before / after
Services

Engineering across the full stack

From idea to production — backend, frontend, mobile, AI and the business systems that tie it all together.

Backend Architecture

Clean, scalable .NET systems built on solid boundaries — APIs, services and domain logic that hold up under growth.

.NET 8ASP.NET CoreClean Architecture

ERP / CRM Platforms

Custom business systems for logistics, real estate and warehousing — dispatch, inventory, billing and dashboards.

SQL ServerSignalRReporting

Mobile Apps

Cross-platform mobile apps that pair with your backend for field teams, drivers and customer-facing workflows.

React NativeRealtimePush

AI Integrations

Production-grade AI features — chat, drafting, summarisation and automation wired safely into existing systems.

OpenAI APIPrompt DesignAutomation

Payments & Billing

Subscription billing, invoicing and payment flows integrated cleanly with your product and customer records.

StripeInvoicingWebhooks

Data & Cloud

Database design, migrations and cloud deployment so your data stays fast, consistent and easy to scale.

SQL ServerAzureDocker
Explore all services
43 free online tools

Free tools for everyday work

Compress photos to KB, make invoices and quotations, write amounts in words, pick a random winner, plus developer tools. Free, no sign-up, and nothing leaves your device.

Open Tools
Image Compressor (to KB)NEWRun Invoice GeneratorRun Amount in Words ConverterNEWRun GPA / CGPA CalculatorRun Spin the Wheel (Random Picker)NEWRun QR Code GeneratorRun
Popular for businesses

WhatsApp Link Generator

Create a wa.me click-to-chat link with a pre-filled message, QR code and website button.

WhatsAppLinkQR
Try it now
Writing & Video

Technical content for builders

Deep-dives on .NET, architecture and AI — plus walkthroughs on YouTube.

All articles
Tech Stack

Tools I work with every day

A battle-tested stack built for enterprise-grade software.

Core / Backend

APIs, services and the business logic behind them

8
.NET 8C#ASP.NET CoreWeb APISignalREntity FrameworkClean Architecture.NET 10

Frontend

Fast, accessible interfaces people enjoy using

6
ReactNext.jsTypeScriptAngularFramer MotionTailwind CSS

Data & Cloud

Storage, deployment and scaling you can rely on

7
SQL ServerPostgreSQLAzureFirebasePrismaDockerAWS

AI & Integrations

LLMs, messaging, payments and third-party APIs

7
OpenAI APIWhatsApp Cloud APIStripeREST APIsWebhooksMeta Cloud APITikTok API
Why It Works

Built different. Delivered right.

Most freelancers write code. I build systems. Here's what actually makes the difference.

Enterprise-Grade Architecture

I write code that handles 10× the load from day one. Clean architecture, proper separation of concerns, zero technical debt that will bite you 6 months in.

Full-Stack End to End

Backend, frontend, mobile and AI — one engineer who owns the whole product. No handoff gaps, no blame-passing, no coordination overhead.

Business-First Thinking

I understand your workflows before writing a line. The system fits your business, not the other way around. I ask the right questions so you don't have to.

You're Never in the Dark

Weekly demos, transparent milestones and a 24-hour reply guarantee. You always know exactly where your project stands — no radio silence, ever.

Client feedback

What clients say

1 / 7
Fiverr

“Working with Yasir has been a pleasure so far. The team have shown nothing but politeness, professionalism and a real want to ensure what they produce is exactly as requested. I look forward to developing this professional relationship.”

s

shifthappensuk

CEO

Fiverr

“Yasir Rehman's work in software development was EXEMPLARY! His attention to detail and code expertise truly shone through in the delivery, and working with him was a breeze thanks to his quick responsiveness and professional approach. Plus, he went above and beyond expectations, making the entire experience top-notch.”

k

kehaglem

CEO

Fiverr

“I got exactly what I was looking for. Seller is very good at what he does and he responds swiftly to my comments and queries. Very good, i would love to work again with him”

ProjectBug Fixes — Up to $50 • 5 days

v

vusalpashall

Bug Fixes • Azerbaijan

Ready when you are

Let's turn your idea into a
system that scales.

Tell me what slows your business down — I'll reply within 24 hours with a clear plan and an honest quote.

Start your projectTry the tools
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