About Big Oh Notation Private Limited
Data last updated: 06 February 2026
Big Oh Notation Private Limited is a private limited company based in Delhi, Delhi, India. It specialises in application development and software solutions, a part of the broader technology and IT services sector. Incorporated on 18 February 2021, the company has been in operation for over 5 years.
Registered with ROC Delhi under CIN U72900DL2021PTC377209.
Capital: an authorised share capital of ₹1 Lakh and a paid-up capital of ₹1 Lakh. Formerly known as Big Oh Notation (Opc) Private Limited. It is led by directors Vijay Kumar Rustogi and Imran Khan.
Last AGM: 30 September 2025. Financial statements filed for year ended 31 March 2025. Office: Flat No. 805 Type – A 8Th Floor Pocket – B Motia Khan Pahar Ganj, Delhi, Delhi, India – 110055.
As per the financials filed for FY 2025, the company reported a revenue of ₹14.21 Cr, a growth of 14% compared to the previous year.
The company has a workforce of approximately 79 employees as per the latest available data.
The company is associated with 1 brand - Big Oh. As per MCA filings, the company has open charges of ₹1.28 Cr on record.
For more details, the company can be reached via its website bigohtech.com.
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Registered AddressFlat No. 805 Type – A 8Th Floor Pocket – B Motia Khan Pahar Ganj, Delhi, Delhi, India – 110055
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IndustryInformation Technology, Application Development & Software Solutions
- Historical Financials and ratios
- Shareholding pattern and group structure
- Charges with holder and property details
- Litigation, compliance and MCA filings
- PDF report delivered after checkout
CIN History of Big Oh Notation Private Limited
Big Oh Notation Private Limited has one previous CIN (Corporate Identification Number): U72900DL2021OPC377209. The current CIN is U72900DL2021PTC377209, which is the unique identifier assigned by the Registrar of Companies.
| CIN | Status |
|---|---|
| U72900DL2021PTC377209 | Current |
| U72900DL2021OPC377209 | Previous |
Associated Brands with Big Oh Notation Private Limited
Big Oh Notation Private Limited operates one associated brand: Big Oh. These brands represent Big Oh Notation Private Limited's diversified market presence and brand portfolio.
| Brand | Description | Website |
|---|---|---|
| Big Oh delivers comprehensive mobile application and web development services to clients. | bigohtech.com |
Competitors & Alternatives of Big Oh Notation Private Limited
Brands and companies operating in the same space as Big Oh Notation Private Limited include Hedgehog lab, AlmavivA, AKQA and 7 more.
| Competitor | Description | Location | Founded |
|---|---|---|---|
Hedgehog lab
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Mobile application development and UX design services are provided. | Newcastle Upon Tyne, United Kingdom, United Kingdom | 2007 |
AlmavivA
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IT services suite solutions are provided globally by AlmavivA. | Rome, Italy, Italy | 2005 |
AKQA
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Integrated digital marketing campaigns are developed and executed across channels. | Riyadh, Saudi Arabia, Saudi Arabia | 1994 |
Fresche Solutions
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IT services for application modernization and development are offered. | Montreal, Canada, Canada | 1976 |
GlowTouch
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Technology services are provided to mid-sized businesses across multiple regions. | Louisville, United States, United States | 2002 |
Hancom
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Technology conglomerate spanning AI, blockchain, IoT, and mobility solutions. | Seongnam-si, South Korea, South Korea | 1990 |
Sierra Atlantic
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Offshore enterprise application development and IT consulting services are provided. | Newark, United States, United States | 1993 |
Sylogist
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Software solutions are delivered to public sector and business clients. | Calgary, Canada, Canada | 1993 |
Waracle
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Mobile apps and IoT solutions are developed across platforms. | Dundee, United Kingdom, United Kingdom | 2007 |
Brightspot
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CMS solutions for digital publishers are provided and managed. | Reston, United States, United States | 2008 |
Business Activity of Big Oh Notation Private Limited
Big Oh Notation Private Limited is engaged in the principal business activity of information and communication, with detailed activities including publishing of computer operating systems, system software, application software, games, etc..
| Main Activity Group Code | Description of Main Activity | Business Activity Code | Description of Business Activity | Turnover Percentage |
|---|---|---|---|---|
| J | Information and communication | J2 | Publishing of computer operating systems, system software, application software, games, etc. | Locked |
Business activity turnover details for Big Oh Notation Private Limited
Turnover contribution percentages and historical activity changes require an active report plan.
- Turnover contribution
- Historical classifications
- Filing-level activity changes
Verified entity values are shown only after access is granted.
Auditor Details of Big Oh Notation Private Limited
Big Oh Notation Private Limited is audited by K.K. JOHARI AND CO. for the financial year 2023. The auditor plays a crucial role in ensuring financial transparency and compliance with accounting standards.
| Name | Status | Appointment Date | Cessation Date |
|---|---|---|---|
| K.K. JOHARI AND CO. | Locked | Locked | Locked |
Complete auditor history for Big Oh Notation Private Limited
Appointment status, appointment dates, cessation dates, and historical auditor changes require an active report plan.
- Appointment status
- Appointment dates
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Board of Directors of Big Oh Notation Private Limited
Big Oh Notation Private Limited is governed by 2 directors who oversee the company's operations and strategic decisions.
| Name | Designation | Appointment Date | Tenure | Status |
|---|---|---|---|---|
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Vijay Kumar Rustogi
Also directs:
Flair Agri Tech Private Limited, Big Oh Notation Private Limited
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Director | 18 Feb 2021 | 5 Years 5 Months | Current |
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Imran Khan
Also directs:
Big Oh Notation Private Limited
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Director | 08 Oct 2022 | 3 Years 10 Months | Current |
Financials of Big Oh Notation Private Limited FY 2025 filings available
Big Oh Notation Private Limited reported revenue of ₹14.21 Cr (up 14.00% YoY) for FY 2025.
Ten-year financial statements for Big Oh Notation Private Limited
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Ownership and Shareholding of Big Oh Notation Private Limited
Shareholding and ownership data for Big Oh Notation Private Limited
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- Ownership categories
- Historical changes
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- FII and DII holdings
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Charges & Borrowings of Big Oh Notation Private Limited
| Date | Lender | Amount | Status |
|---|---|---|---|
| 12 Mar 2025 | Others | ₹28 Lakh | Open |
| 11 Nov 2024 | Others | ₹1 Cr | Open |
Total charge records: 2 View all charges
Employees and EPFO Compliance at Big Oh Notation Private Limited
Big Oh Notation Private Limited has a workforce of 79 employees as of Apr 10, 2024.
Employee and EPFO history for Big Oh Notation Private Limited
Monthly headcount, contribution history, establishment records, and filing compliance require an active report plan.
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GST Compliance of Big Oh Notation Private Limited
GST registrations and filing compliance for Big Oh Notation Private Limited
State-wise registrations, return filing status, HSN and SAC details, and jurisdiction records require an active report plan.
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Credit Ratings, Litigation & Regulatory Alerts for Big Oh Notation Private Limited
Credit ratings, litigation, and regulatory alerts for Big Oh Notation Private Limited
Agency ratings, court records, regulatory events, and entity-specific compliance alerts require an active report plan.
- Rating history
- Court and tribunal cases
- Regulatory alerts
- Director-linked violations
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MSME Payment Delays by Big Oh Notation Private Limited
MSME payment history for Big Oh Notation Private Limited
Amounts outstanding to micro and small suppliers, delay reasons, and MSME-1 filing history require an active report plan.
- Outstanding amounts
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Subsidiaries & Group Companies of Big Oh Notation Private Limited
Corporate group structure for Big Oh Notation Private Limited
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MCA Filings & Documents of Big Oh Notation Private Limited
MCA filings and documents for Big Oh Notation Private Limited
Official forms, annual returns, financial statements, charge filings, and document dates require an active report plan.
- Incorporation documents
- Annual returns and statements
- Charge filings
- Complete filing index
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Recent Activity on Big Oh Notation Private Limited
Frequently Asked Questions about Big Oh Notation Private Limited
Big Oh Notation Private Limited is an active private limited company in the information technology sector based in Delhi, Delhi, India. It was incorporated on 18 February 2021 (5+ years old) and is registered under CIN U72900DL2021PTC377209. The company has 79 employees.
Big Oh Notation Private Limited reported revenue of ₹14.21 Cr for FY 2025 (up 14.00% YoY).
The current directors of Big Oh Notation Private Limited are:
- Vijay Kumar Rustogi - Director
- Imran Khan - Director
The primary industry of Big Oh Notation Private Limited is information technology. The company specifically operates in application development and software solutions. The company is currently active in this sector.
Big Oh Notation Private Limited can be reached at the registered office: Flat No. 805 Type – A 8Th Floor Pocket – B Motia Khan Pahar Ganj, Delhi, Delhi, India – 110055, or through the website bigohtech.com.
The authorised capital is ₹1 Lakh, and the paid-up capital is ₹1 Lakh.