Please review some work experience description in my resume

Hi all, I'm going to apply for internship in some foreign company. Needless to say, my resume is not allowed any single grammar mistakes.

Since I'm not a native English speaker, I would really appreciate if you could check some of my sentences below (is it grammatical correct? Does it sound natural? ).

Thank you in advance

1.
• Worked in a team of 5 interns to develop a 3D game using C++ and Object-oriented programming.
• Implemented visual effects and transitions with OpenGL ES 2.0 and OpenGL Shading language.
• Designed and implemented a .obj file reader to load game models and textures.

2.
• Worked in a team of 4 interns to build a website that can generate graphs from given figures using ChartJS framework.

3.
• Worked in a back-end team of 3 interns to design and implement server side for a world clock website using Ruby on Rails 5. Implemented a token-based authentication feature via social network accounts.

4.
• Researched in a team of 2 students/1 supervisor to design a unit testing tool based on static analysis, published a paper in university.
• Implemented a tool that can automatically generate test cases for Java functions using JDT and Z3 SMT