AI Agents & Workflow Automation
WhatsApp booking bots, n8n qualifier workflows, lead scoring and auto-publishing pipelines, wired into the tools you already run.
Arnab Builds — high-reliability tech lab
Automate, Build, Scale — With AI That Works
From flight emergencies to digital transformation. Aviation taught me what reliability costs when it fails. That discipline now runs on AI agents, automation pipelines and code I audit myself.
Custom AI automation, conversion websites and web applications for businesses that cannot afford downtime.
- Aviation-trained
- Purser, live emergency response
- AI & automation
- Agents, LLM workflows, n8n pipelines
- Security-minded
- Site audits and vulnerability checks
Meet the founder
Arnab Aditya Das
I build AI agents and LLM workflows, automation pipelines that wire a business’s existing tools together, conversion websites and custom web applications. Alongside that I run security audits — vulnerability checks on sites I ship and sites I am asked to look at — because it is the part of the craft I find hardest to put down.
The discipline came from somewhere unusual. I spent nine years in commercial aviation, ending as a purser: live cabin emergencies, crisis response, crews led through an evacuation, a crash landing and an in-cabin fire. Aviation teaches that a system is only as good as what it does on its worst day, and that checklists exist because memory fails.
The route between the two ran through a BBA in Marketing, commercial roles at Nestlé and Apex Leathercraft, and freelance work advising clients on what to build before building it — small design jobs through to full-stack software.
Background
Aviation and commercial
Purser; Nestlé, Apex Leathercraft
Focus now
AI, automation, security
Next.js, Supabase, n8n, LLM tooling
Four pillars of service
Custom solutions built around reliability, precision and the outcome you are actually paying for.
Conversion Websites
Fast, mobile-first business sites and booking engines on Next.js and Tailwind, built to load in under three seconds on 3G.
Social Media Automation
Captions written in your brand voice, graphics generated on brand, and a full month of posts scheduled across Facebook, Instagram and LinkedIn — so the feed never goes quiet.
Custom Web Apps & Internal Tools
CRMs, inventory managers, project trackers and client portals on Supabase and PostgreSQL — built to survive real operational load.
Swipe through all four
A transparent four-step process
From discovery to launch, you are never guessing where the project stands.
1
Discovery Call
A personal, non-transactional audit of where your business actually loses time and money.
2
Strategy & Proposal
Collaborative scoping, then one fixed-price quote. No hourly surprises.
3
Build & Iterate
Agile weekly staging previews. You see progress every single week.
4
Launch & Support
Deployment, documentation and ongoing maintenance included.
Dual market
Built in Dhaka. Shipped to any time zone.
Local rates and a WhatsApp line for Bangladesh. Async delivery and overlapping hours for everyone else.
Builds you can walk through
Concept products, built end to end. Open any of them and use it — these are whole pages, not screenshots.
PostPilot
Writes captions in your brand voice, designs the graphic and publishes on schedule.
- Social automation
- AI copy
- Scheduling
PostPilot — Gen-Z cut
The same product, pitched to a younger audience. Same engine, different voice.
- Brand voice
- Art direction
- Positioning
LaunchDesk
Business setup and automation packaged as a done-for-you service.
- Productised service
- Onboarding
- Ops
Each of these is a concept build made to demonstrate an approach. None is a live commercial product.
Portfolio & proof
Recent work across tourism, retail, e-commerce and automation. Demonstration builds are labelled as such — no borrowed credit.
Boutique
Demonstration build
Boutique Resort Booking System
Rooms were sold over the phone into a paper ledger, so double bookings were routine and nobody could see real availability.
What it does: Live availability, deposit capture and automatic confirmation.
E-Commerce
Demonstration build
E-Commerce + Automation
Stock counts drifted between the shop floor and the online store, and order updates were sent by hand.
Stack: Next.js, Supabase, n8n.
Lead
Demonstration build
Lead Scoring Agent
Enquiries arrived across three channels and were triaged by hand, so the best leads were answered last.
What it does: Scores and routes every enquiry the moment it arrives.
Retail
Demonstration build
Retail Operations Dashboard
Branch figures only met once a month, in a spreadsheet, long after anything could be done about them.
Feature: Live multi-branch data on one screen.
WhatsApp
Demonstration build
WhatsApp Booking Bot
Customers wanted to book on WhatsApp, but every message needed a human to read it and check the diary.
What it does: Books, confirms and reminds entirely inside WhatsApp.
CRM
Demonstration build
CRM & Pipeline Tool
A small sales team had outgrown a shared spreadsheet and kept losing follow-ups between stages.
Stack: Supabase + React.
Tell me what's eating your week
Describe the task you keep repeating. I will tell you whether it is worth automating, and roughly what it would take.
Every message comes to me directly — no form, no inbox rules, no list you get added to. Expect a reply within one working day.
hello@arnabbuilds.comWhatsAppThe fastest route, and the first message is already written. Open it, add a line about your business, send.Book a discovery callThirty minutes on a shared screen. You describe the work; I tell you what it would take and whether it is worth doing.EmailBest when there are attachments, a brief to forward, or a longer story than a chat window suits.
Ready toautomate, build and scale?
Two ways in: an international consultation call, or a direct WhatsApp line for Bangladesh.