Been programming since 2000.
C, C++, Go, Java, PHP, Python, JavaScript, MySQL/NoSQL (e.g., Cassandra).
Proficient on both Windows and Linux.
Nowadays I do web development. Strong focus on backend. Can do front-end (e.g., HTML/CSS, vanilla JavaScript or React) but don't enjoy it as much.
No longer doing OS/phone app as a rule, but may consider depending.