401K Plan

You can select any combination of pre-tax (up to 80% gross income), roth contributions, after-tax contributions (up to 10% gross income). Unlimited in-service withdrawals for after-tax so mega backdoor roth is possible. Wide variety of investment options especially low-fee index funds. After 1 year of service, they give you 1% and match 5% for total of 6%. The match is paid once at the very end of the year and you have to be still employed as of Dec 15 to receive it.