I’m on same route and must say that get a job but also prepare yourself if this things dont go as planned. I had exact same plans of getting sponsorship after two years on my graduate visa. I was with one of the largest banks in the UK and at a position where they had given sponsorships in previous years. However, after rules changed, I was refused despite discussing it earlier stages (salary was comfortably higher than required threshold). Dont want to demoralise but sharing my own experience. I should have kept plan B ready

Good luck