| 1982 | First generation entrepreneurs Ashank Desai, R. Sundar and Ketan Mehta established Mastek in Mumbai, India. |
| 1982 | Becomes one of the first IT / software companies in India. |
| 1984 | Sudhakar Ram joins the team. |
| 1990 | Singapore subsidiary is established. |
| 1992 | First company to develop ERP in India. |
| 1992 | First Indian IT company to issue shares at a premium price in the IT sector. |
| 1992 | Mastek USA (now known as MajescoMastek) is founded. |
| 1992 | Mastek UK is established. |
| 1993 | First Indian IT company to offer ESOPs (Employee Stock Option Plan). |
| 1994 | Malaysia subsidiary is established. |
| 1997 | One of the first to venture into CRM services globally. |
| 2000 | First IT Solutions company in the world to be assessed at P-CMM Level 3. |
| 2000 | Ranked 7th by AsiaMoney in the category of "Overall Best Managed Companies in the Asia Pacific Region". |
| 2000 | Among the first to be chosen by Microsoft for .NET beta. |
| 2002 | Chosen by Forbes as one of the "200 Fastest Growing Companies in Asia Pacific". |
| 2002 | Launches state-of-the-art campus at Millennium Park in Navi Mumbai. |
| 2003 | Successfully completes the world's largest .NET project – London Congestion Charge. |
| 2005 | Signs the memorandum of agreement to acquire 15.5 acres of land at Mahindra City in Chennai – Mastek's first development centre outside Maharashtra, India. |
| 2006 | Consistently ranked among technology companies in a "CLSA Study on Corporate Governance" for four consecutive years from 2001-2004 among 25 emerging markets including Asia, Eastern Europe, Latin America and South Africa. |
| 2007 | Ranked first in Insurance Outsourcing by the Black Book of Outsourcing. |
| 2007 | Achieves CMMi Level 3 appraisal by Software Engineering Institute (SEI) - the 5th organisation from the NASSCOM Top 20 IT companies to get appraised under version 1.2. |
| 2007 | Ranked 11th among the leaders of "Global Outsourcing 100 Companies 2007" by the International Association of Outsourcing Professionals, published in Fortune magazine (April 2007) – Recognition for "Methodologies and Innovation" adopted by Mastek. |
| 2007 | MajescoMastek acquires Vector Technologies. |
| 2008 | MajescoMastek acquires System Task Group (STG). |
| 2008 | Successfully certified on ISO 9001:2008. |
| 2008 / 2009 | Ranked among the Top 50 leaders of "Global Outsourcing 100 Companies" by the International Association of Outsourcing Professionals, published in Fortune magazine (2008, 2009). |
| 2009 | Ranked amongst the Top 50 global outsourcing providers in "The Black Book of Outsourcing" published by the Brown-Wilson Group. |
| 2009 | MajescoMastek enters Canadian market. |
| 2009 | Recognised among the Best 20 Leaders by industry focus: Financial Services - Banking, Capital Markets and Insurance (2009 Global Outsourcing 100 by IAOP). |
| 2010 | Achieves CMMi Level 5 (version1.2) appraisal by Software Engineering Institute (SEI). |