A teammate wants to transition from our current team to another team while there was an ongoing project.

Ended up leaving the whole project to me. FML

What can I do when my boss tells me to guide the “Senior Software Engineer” while I am just a “Software Engineer”?

Also, the SSE just asked me to help him/her with his/her project coz he/she forgot the skill that he/she was hired for.

I opened this up to my boss, he just told me to guide and not spoonfeed her.

So, questions:
I really find it unfair that we have different job titles, how can I tell my boss that the SSE doesn’t really have the skills to proceed with the project?

Second, do I also need to define and establish the criteria for Lead, SSE and SE within the company? (My boss scheduled a meeting for this exclusively)

Being a developer means...
- Writing code
- Fixing bugs and issues
- Impromptu project manager to current project
- Making coffee
- Seeing unicorns
- Listening to the boss' suggestion that goes horribly wrong
- Contemplate