What I build
Internal tools: what your team does by hand today in spreadsheets, with the human error that carries and the time it consumes.
Integrations: making the systems you already pay for talk to each other, instead of someone copying data from one to the other every Friday.
Automation of operational processes, with the business logic inside the system rather than spread across three people's heads.
And technical audits: reviewing what you have already had built and telling you what holds up, what has to be redone and what you are being overcharged for.