Hire full stack developers by skill

Which screening questions work for full stack roles?

Screening questions go out by email right after a candidate enters the pipeline. Answers are scored against the skill matrix, with a written reason. Here are three from the full stack library.

1. Q1 Tell us about a feature you shipped from database to UI. What would you change now?
2. Q2 Where do you put validation, in the browser, the API or both, and why?
3. Q3 How do you split time between frontend and backend when both are behind?

What does the full stack coding task look like?

Team invites feature. Add a feature where an admin invites a teammate by email, the invite expires in 7 days and the list updates live. Time limit 90 minutes.

1. Create the invites table and migration
2. Build the API with validation and an expiry rule
3. Build the admin screen with pending and expired states
4. Test the expiry rule and the main user flow

export async function createInvite(req: Req) {
  const input = InviteSchema.parse(req.body)
  await requireRole(req.user, 'admin')
  return db.invites.insert({ ...input, expiresAt: addDays(now(), 7) })
}

Running hidden tests
passed 9 of 11
failed invite_expires_after_7_days, non_admin_gets_403

How much does a full stack developer cost?

Pay varies a lot by country, city, seniority and company. Public salary surveys show broad yearly ranges like these for mid-level to senior full stack developers. Treat them as a starting point and check current surveys for your market.

Full stack salaries depend on which side is deeper. Strong backend plus product UI skills usually sit in the upper half of the range.