Historical model audit

Forecast Replay

Return to a historical cutoff and reconstruct what 1stSeen could have predicted, using only the evidence it held by then. Every run is computed by the worker’s leak-safe backtest when you ask for it.

Future evidence is sealed

The held-out opening and every post-cutoff observation are scoring data only. They cannot enter the forecasting component.

What can be replayed

Held-out targets with a defensible actual interval

Roles with two or more recorded openings: 179
Excluded: only observed-by evidence: 26
Replay candidates: 153
held out on an exact opening: 153
held out on a bounded opening: 0

An archive capture proves a role was visible by then, not that it opened then, so an observed-by opening is never scored as ground truth.

Latest backtest

Why targets could not be scored

Finished Oct 3, 2026 · cutoff 60 days before each target · 890 targets, 0 scored, 890 skipped

no temporal evidence was available by the forecast cutoff689
held-out opening is observed-by only and has no scoreable actual interval201

Counted over every reconstructed cycle the backtest evaluated, which is more than the replay candidates above. Reasons are the backtest’s own words.

Choose a held-out target

Showing 21–40 of 153

Databricks
Software Engineering Intern Start Berlin
Held outOct 2, 2026exactexact
Not in the latest backtest run
Anduril
Industrial Engineer Intern
Held outOct 2, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Pinterest
Grad Software Engineer Usa
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Varda Space
Guidance Navigation Controls Gnc Intern Summer
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Pinterest
Grad Software Engineer Toronto
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Tower Research Capital
Software Engineer C++ Graduate Opportunity
Held outOct 1, 2026exactexact
Latest backtest held out another posting of this role that year
Pinterest
Software Engineering Intern Toronto
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Pinterest
Grad Software Engineer Dublin
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Varda Space
Flight Software Intern Summer
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Varda Space
Manufacturing Engineering Intern Summer
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Pinterest
Machine Learning Intern Zurich
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Pinterest
UX Engineering Intern San Francisco
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Old Mission
Junior Quantitative Trader Asian Market Hours
Held outOct 1, 2026exactexact
Latest backtest held out another posting of this role that year
Pinterest
Grad Machine Learning Engineer Toronto
Held outOct 1, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
IMC
Software Engineer
Held outSep 30, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Anduril
Guidance Navigation Control Engineer Intern
Held outSep 30, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Notion
Software Engineer Intern Mobile Winter
Held outSep 24, 2026exactexact
Skipped in the latest backtest
no temporal evidence was available by the forecast cutoff
Ramp
Software Engineering Intern Android
Held outSep 24, 2026exactexact
Latest backtest held out another posting of this role that year
Optiver
Graduate Quantitative Researcher PhD Start
Held outSep 23, 2026exactexact
Latest backtest held out another posting of this role that year
Scale AI
Software Engineer Public Sector New Grad
Held outSep 23, 2026exactexact
Latest backtest held out another posting of this role that year

Choose the historical vantage point

Databricks · Software Engineering Intern Start Berlin · held out Oct 2, 2026 exact

Forecast cutoff

Why targets could not be scored

Finished Oct 3, 2026 · cutoff 60 days before each target · 890 targets, 0 scored, 890 skipped

no temporal evidence was available by the forecast cutoff689

held-out opening is observed-by only and has no scoreable actual interval201

Counted over every reconstructed cycle the backtest evaluated, which is more than the replay candidates above. Reasons are the backtest’s own words.