[Resume] Grammar for describing my former job

[Hulio943]

I plan to write the following paragraph in my resume, for describing my former job as a Software Developer.
Note that I wrote "Y" below for not exposing the company I work (refer to "Y" as the name of the company).
Please tell me if I have grammar mistakes here:

July 2017 – October 2018: Software Developer, Y:

• Development of the firmware's simulations environment.
• Worked with Linux and Cygwin environments.
• Created feature for providing information about the firmware’s test coverage.

*Another question related - maybe it will look better to write the first dot like what I wrote below?

• Develop the firmware's simulations environment.

(Not sure if I can write "Develop" when describing a job I did in the past).

 

[Tarheel]

I plan to write the following paragraph in my resume, for describing my former job as a Software Developer.
Note that I wrote "Y" below for not exposing the company I work (refer to "Y" as the name of the company).
Please tell me if I have grammar mistakes here:

July 2017 – October 2018: Software Developer, Y:

• Development of the firmware's simulations environment.
• Worked with Linux and Cygwin environments.
• Created feature for providing information about the firmware’s test coverage.

A related question. Maybe it will look better to write the bullet point like what I wrote below?

• Developed the firmware's simulations environment.

(Not sure if I can write "Develop" when describing a job I did in the past).

My suggestions.