Engineering Design

Hi Aditya,
You can start your career by learning different software. The mechanical design engineers have to learn different software, because not every company uses the same software for CAD, CAM or CAE. There are many software that can be helpful to find jobs for mechanical design engineers like:
1. Autocad - this is a basic and must learn software, AutoCAD draughtsman jobs are plenty in the market. 2. Solidworks - The best 3D modelling software, very useful and dynamic. Jobs opportunities are very high
3. Catia - Most complex software, useful where there needs to be precise surface finishing such as in aerospace engineering or creating aerodynamic / aerofoil structures
4. Solidedge - Used in Medium scale industries, biomedical tools manufacturing, Lifts manufacturing industries. This software is a product of Seimens and works very efficiently.
5. Inventor / Fusion 360 - This software are generally used at the institutional level, The inventor Professor are paid a high salary at institutes. The Fusion 360 helps you learn CAD, CAM and CAE at one place.
6. Seimens Nx - Formerly known as Nxcad or Ugnx, a great product of Seimens used at medium scale or small scale industries.
7. Creo - Highly Agile, assembly properties and Analysis is very advance. This is all in one package for modelling, creo is difficult to learn but once you learn it; you will find ease in learning other software. Very high in demand nowadays. Start your career with Internship, so they will teach you all the basics of designing and detailing. In this way, you will work independently when it comes at the industrial job.

Interior designis the art and scienceof enhancing the interior of a building achieve a healthier and more aesthetically pleasing environment for the people using the space. Aninterior designeris someone who plans, researches, coordinates, and manages such projects. Interior design is a multifaceted profession that includes conceptual development, space planning, site inspections, programming, research, communicating with the stakeholders of a project, construction management, and execution of the design. Engineering is the creative application of Science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations. Both are different fields, one is based on complete creativity and on the other hand engineering is totally technical and scientific. Its upto you if you want to choose a creative field or technical one.