Database Administrator
You keep the database fast, backed up, and awake at three in the morning.
No degree needed Hard, and the consequences of getting it wrong are permanent in a way most software is not.
Can I actually do this?
Open without a degree and often entered from sysadmin work. Fewer pure DBA roles exist than a decade ago because cloud managed services absorbed much of the routine work — we would rather say that plainly. What remains is deeper: performance, recovery, and the databases too critical to hand to a managed service. The documentation below is free and unusually good.
Who it suits. People who take backups seriously and find performance puzzles satisfying.
Runway. A year or more. The failure modes take time to meet.
Coming from sysadmin work? You already understand backups, monitoring and being on call. The database is the new part. Systems Administrator Data Engineer Backend Developer
Also advertised as
The route
Four stations, in order. Each one is a thing you finish before the next matters.
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Station one
Learn it free
Only the best few, deliberately. Every one of these is free to use — the pill on each card says exactly what is and isn't free.
PostgreSQL — server administration
Free to learn · no certificate
Configuration, backup, recovery, monitoring and tuning, from the project itself. Free, thorough, and the best free database administration text we know of.
Verified 2026-07-28
PostgreSQL — the official tutorial
Free to learn · no certificate
Start here if SQL is not yet second nature.
Verified 2026-07-27
Site Reliability Engineering (the Google SRE book)
Free to learn · no certificate
Modern database work is reliability work. Free in full.
Verified 2026-07-27
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Station two
Attest strategically
Nothing worth buying speculatively. Database certifications are strongly vendor-specific, so which one is worth anything depends entirely on what your employer runs — and buying the wrong one is money gone. A restore you can prove works is a better argument than any of them.
Nothing here is worth paying for
No credential needed
Nothing worth buying speculatively. Database certifications are strongly vendor-specific, so which one is worth anything depends entirely on what your employer runs — and buying the wrong one is money gone. A restore you can prove works is a better argument than any of them.
Checked 2026-07-28
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Station three
Prove it
A certificate says you passed a test. These say you can do the job.
A restore you actually performed
Not a backup — a restore, timed, from scratch. Anyone can take backups. The job is proving they work.
A slow query you made fast
Show the plan before, what you changed, the plan after, and the numbers.
A failover you rehearsed
Break it deliberately in a lab and document what happened. The first time should not be in production.
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Station four
Get hired
Search these exact titles
Who hires for this. Banks, health systems, government, large retailers — anywhere the data is too critical or too large to leave entirely to a managed service.
Interviews here dwell on recovery scenarios, which rewards people who have actually restored something. That is our reading of the field, not a verified hiring statistic.
On salaryWe don't publish salary estimates. Numbers copied between blogs drift from reality, and a wrong number costs you real negotiating power. When we have a verified public source, it goes here with its date.
Where this route continues
- Site Reliability Engineer — reliability work more broadly
- Data Engineer — toward pipelines
- Systems Administrator — sideways move
- Data Engineer — sideways move
- Site Reliability Engineer — sideways move
This page last verified 2026-07-28 · How we verify
PostgreSQL server administration (5,675 chars) fetched and READ 2026-07-28. PostgreSQL tutorial and the Google SRE book carried from 2026-07-27.