[ithilglin909]

1) Propose your ideas in an email, preferable with someone else cc’d on it.

2) Propose your ideas to several people on your team at once.

3) Find someone more trustworthy if you need a sounding board.

4) Talk to your manager.

5) If you don’t have good relationship with your manager AND your tech lead, it’s pretty clearly time to find a new job.