How can you be sure?

A list of experiences that boosted my confidence.


Usually developers don’t go through the whole stack of experience.

They only gather smaller parts, and never level up.

Here’s a list of a senior developer needs to level up in terms of WORK EXPERIENCE.

A list of experiences that boosted my confidence.

Project delivered

just on time (Vaccination center), and actually seeing it being used.

Own project done

from scratch to production, incl. deployment (

Done a rebase

of code in a complex project.

Wrote my first “gem” - a piece of software with versioning, used by other devs.

Created my first integration spec with time travel. Found that I could test anything now.

Did my first hire of a dev who was better than me (there’s a video online about it)

Shipped a project after estimating it correctly.

1 min read

Till Carlos

I'm Till, a senior developer who started a software company. I explain software concepts for people in leading roles.