10 Signs Someone Won't Last 6 Months at a Startup

Most founders have made this hire. Someone who looked excellent on paper — right schools, right companies, structured experience — who was gone or disengaged within six months.

In hindsight, the signs were there. Not in a way that would have been obvious at the time, but in patterns that, once you've seen them enough times, become recognisable. Here are the ten most reliable ones.

1. Every achievement is described in passive voice

"Was part of a team that delivered…" "Contributed to a project that achieved…" "Supported the rollout of…"

Startup people own things. They use "I built," "I drove," "I decided." Not because they're taking credit for team effort, but because they've genuinely been accountable for outcomes. Passive framing on a CV often means the person was around when things happened, rather than the person who made them happen.

2. The CV is all large companies, all the time

Ten years of FAANG, Big 4, or global bank experience isn't a red flag by itself. But if there's no exposure at all to an environment where every person counted, it's worth probing. Large companies are optimised for operating within systems. Startups require building them. The skill sets aren't the same.

3. Rapid job changes with no pattern of growth

Frequent moves aren't a problem if each one was a step up. But a pattern of 12–18 month stints with lateral moves, downsized roles, or vague "new challenges" framing is worth exploring. Some people hop because they get bored when the hard part is done and the work becomes operational — a real problem at a startup, where operational work is most of the work.

4. Very clean scope at every role

"Responsible for X function. Managed a team of Y. Delivered Z." Neat, bounded, clear. At a startup, scope is messy and expanding. Someone who's spent their career in clearly defined lanes may not be equipped to operate without them — and may find it deeply uncomfortable.

5. No evidence of building from zero

If every achievement on the CV involves improving, scaling, or optimising something that already existed — and nothing was built from scratch — that's a signal. Building from zero is a fundamentally different skill. It requires making decisions without data, tolerating slow early progress, and operating without the support structures of an established function.

6. The numbers are missing

Startup people tend to know their numbers. They know what they shipped, what it cost, what it moved. CVs with no quantification — only activities and responsibilities — often belong to people who operated in environments where individual impact wasn't tracked or wasn't theirs to claim. That's fine in a large org. It's a problem in a startup where every person is accountable for a metric.

7. Compensation expectations that don't match startup reality

This one shows up in first calls, not CVs. A candidate who's been earning at a senior corporate level and is unwilling to accept any equity offset is either financially constrained (valid — ask) or underestimating how different startup comp structures are. Either way, it's worth resolving early.

8. They've never had a bad experience

Startups are hard. Things break. Strategies fail. Products get killed. Companies fold. A CV with nothing but successes either belongs to someone who's been very lucky or someone who's moved on before things got difficult. Neither is ideal.

Ask about a failure directly. The quality of the answer — whether they own what went wrong, what they learned, whether they stayed through it — tells you more than most of the CV combined.

9. They need to know the answer before they can start

This one is hard to spot in a CV but shows up clearly in interview. Look for framing like "once we had full clarity on the requirements" or "after aligning the stakeholders." Startups rarely have full clarity. The ability to start with incomplete information, learn fast, and correct course is more valuable than the ability to execute perfectly once everything is defined.

10. Their references are all internal peers or direct reports

Strong startup hires tend to have references who are their managers, customers, or people who saw them deliver something hard. References that are all internal peers, junior reports, or people who work alongside rather than above them can indicate someone who is well-liked but hasn't been put in a position where someone senior had to stake something on them.

None of these are disqualifying alone

The point isn't to screen out anyone with one of these signals. It's to know where to probe in the interview.

The best startup hires often have surprising backgrounds. What makes them work isn't the absence of these signals — it's specific evidence that they've operated outside their comfort zone, owned hard things, and come out the other side with something to show for it.

The CV gets you a probability estimate. The interview is where you find out if the signal is real.

GritScore surfaces these signals automatically — scoring CV evidence across 7 startup-readiness dimensions and generating the specific interview probes most likely to test the weak spots. Try it free →