Need help with identifying my NOC code

[civilunderstanding]

I am confused to what my NOC code is, my most general job responsibilities are mentioned below: -

• Identification of new business opportunities in the project engineering, procurement, construction and/or other services in the Oil & Gas sector
• Market research, market scanning, newsletters for effectively tracking current & future projects as well as business opportunities
• Preparation of a business plan for target & potential projects for large scale capital projects
• Interaction with key clients to further business development objectives.
• Preparation of Expression of Interest and Prequalification documents.
• Participate in Oil & Gas industry tradeshows, conferences, seminars, and organizations to develop new business opportunities the company.
• Networking: Positions the incumbent needs to interact with internal and externally as a part of the job.
• Develop both short-term and long-term new business and revenue generation opportunities
• Expertise in tendering and Pre-contracts
• Willingness / flexibility for extreme travelling (if necessary)
• Experience in dealing with complex environments and should have worked in a large Corporations.
• Excellent people handing and communication abilities

My job designation was mostly business development manager but my duties are not very similar to NOC 4163.

I checked CIC codes and i have a mix of many NOC codes but i cant identify which one is correct among the following:-

• 6221 Technical sales specialists - wholesale trade
• 0601 Corporate sales managers
• 6411 Sales and account representatives - wholesale trade (non-technical)
• 4163 Business development officers and marketing researchers and consultants

My companies were all project services provider such as engineering, construction, procurement & installation. what is my NOC !!