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bigO

bigO · software studio · Delhi NCR

Every business has a slow part. We write the software that fixes it.

Web apps, client portals, AI assistants and automations for growing businesses that have outgrown spreadsheets and copy-paste. You talk directly to the people writing the code.

Start a projectSee what we've built

O(n) → O(1)In engineering, Big O describes how work grows as a business grows. We take the jobs that grow with every order, client or message, and make them stay small.

example · on new enquiryrunning
  1. +0.4sEmail or form enquiry arrives
  2. AI reads it and sorts it
  3. Contact saved to your CRM
  4. Reply drafted for approval
  5. Right person notified

New enquiry · website form · “Hi, could you quote for 200 lunch boxes next Friday?”

from
type
crm
draft
assigned

An example of the kind of automation we build. Sample data.

Shipped, live, in use.

All projects
nexora-8y5.pages.dev
Nexora home page: Discover the world's next opportunity before everyone else

Nexora

AI data pipeline

An automated pipeline that finds scholarships, grants and fellowships across hundreds of sites and keeps them up to date on its own.

hirearn.com
Hirearn home page: daily wage hiring for employers

Hirearn

Marketplace web app

A two-sided marketplace and installable app that connects people with local jobs and services.

yagyaxsen.github.io/lumora-dental

Lumora Dental

Clinic website with booking

A calm, trustworthy clinic website with treatment pages, online booking and a callback form.

Which one is you?

Most projects start with one sentence.

“Your team copies the same data between spreadsheets, email and other tools.”

Today

  1. 1Order arrives by email
  2. 2Someone copies it into a spreadsheet
  3. 3Then re-types it into invoicing
  4. 4Mistakes are found later, by customers

With bigO

  1. Order arrives by email
  2. Saved to your sheet and invoicing automatically
  3. Checked for missing details
  4. Your team gets a short summary

What we build

Workflow automation and integrations. Data moves between your systems on its own, without retyping or mistakes.

How we build this

Four things, done properly.

We keep a narrow focus so every project gets our full attention. Websites, design and care plans come with them when you need them.

How each one works
  1. 01Web apps and internal toolsCustom systems built around how your business works, replacing spreadsheets and manual steps.Dashboards and admin panels / Order, booking and job management systems / Marketplaces and multi-sided platforms
  2. 02Client portalsA secure place where your customers log in to track progress, share files and pay invoices.Customer accounts with secure login / Project or order status pages / File sharing, approvals and messages
  3. 03AI chatbots and assistantsAssistants that answer questions from your own documents and data, on your website, WhatsApp or inside your product.Website and WhatsApp assistants / Internal assistants that search your documents / Data extraction from PDFs, emails and web pages
  4. 04Workflow automation and integrationsWe connect the tools you already use and automate the manual steps in between.Connections between your CRM, accounting, forms, email and WhatsApp / Automatic order, lead and booking processing / Scheduled reports and alerts

Built like it has to last. Because it does.

Your business will depend on what we build, so every project gets the same engineering basics, from a small automation to a full platform.

  1. 01

    Security from day one

    Logins, role-based access, encrypted connections and secrets kept out of the code. People only see what their role needs.

  2. 02

    Tested before every launch

    Forms, integrations, payments and permissions are checked end to end, on phones, tablets and desktops.

  3. 03

    Fast on real phones

    Server-rendered pages, compressed images and lean code, so it stays quick on mobile data and older devices.

  4. 04

    Every change previewed

    All code lives in Git. Each change gets its own preview link you can try before it goes live, and any release can be rolled back.

  5. 05

    AI with guardrails

    Validation, fallbacks and a hand-off to a person where accuracy matters, with running costs kept visible.

  6. 06

    Yours to keep

    Readable code, written documentation, and every account in your name, so any developer can pick it up later.

The tools we use

Front end
ReactNext.jsTypeScriptTailwind CSS
Back end
Node.jsPythonFastAPIHono
Data
PostgreSQLSupabaseMongoDB
AI and automation
LLM APIsVector searchGitHub Actions
Hosting and payments
VercelStripe
Alok Kumar, Founder, bigO
Alok Kumar · Founder, bigO

A note from the founder

“I started bigO because good software shouldn't need a big agency.”

We keep the team small on purpose. The people on your first call are the people who design and write your code, so nothing gets lost in hand-offs. We agree the scope in writing before we start, we show you progress as we go, and we stay around after launch to keep things working.

Free first call
No set length, no obligation
Scope in writing
Agreed before any work starts
You own the code
Code, designs and accounts are yours once paid
30 days of fixes
Any bug after launch, fixed free

Before you write to us.

More questions
01How long does it take?

That depends on the scope. Your proposal includes the timeline, split into milestones so you can see progress as it happens.

02Who owns the code and designs?

You do. Once the project is paid in full, the code, designs and accounts are yours.

03What happens after launch?

Any bugs are fixed free for 30 days. After that, a monthly care plan covers updates, backups, monitoring and small changes, if you want one.

04Will you sign an NDA?

Yes. We're happy to sign one before you share any details.