Basically the title says everything. I came from a very low ranked university outside the UK (Africa). During my PHD, I worked as a part time lecturer at another University in my home country for 1 year and I have a lot of experience in supervising and a very good research background with good publication output (7 papers in moderate journals).
I say this first because it had a lot with how I handled my salary negotiation: 1) I received a feedback that I need to start on higher quality journals (at least Impact factor 4 or more). The best journal I published in was IF 1.1 and that phd students in that new university could easily get a journal with IF 3. This clearly hit my self confidence and I know it does because I am a bit nervous although EVERYONE in my new team are really really satisfied with my current progress and results. 2) The second issue is that I read everyone that postdoc salary are simply not negotiable. A recently graduated PHD will start at the lowest scale point.
So during the meeting with HR officer, she basically asked if I am working right now and I simply replied "no" and she said "Ok, you don't have experience so you will start with this" and quickly moved to other things. I was nervous to bring the issue so I just went a long with it. Now, 5 months later in my postdoc, I know that my PI is really good at bringing money and he has a lot of project working on. So money is not an issue. I recently learned that the project I'm working on had a higher budget allocated to the researcher to be recruited (and that's me) but I started at the lowest pay scale. I really think I deserve more but I really don't know if I should bring this or maybe I missed my chance.
I still have one probation meeting where I will talk to the PI. What do you think? Is this too late? If you think I could try, how can I approach the situation with the PI? At first, I knew that I can't justify why I need more because I come from another country, so I decided to wait and let them see how I work to bring it.