GhostFilter: Real-Time Ghost Job Detector for Tech Roles
Job listings remain open for months or years with no responses or closures, wasting massive application effort on ghost jobs that aren't truly active.
Is the problem real?
Tech job seekers experience ghosting where applications receive no response and job listings remain open for months or years without apparent hiring activity.
EVIDENCE
Show HN: Got ghosted by tech companies so I built a tool to track ghost jobs
Show HN: Got ghosted by tech companies so I built a tool to track ghost jobs
Are you sure these are talent shortages and not H1B postings?
commentAre you sure these are talent shortages and not H1B postings? Are you filtering for changing JDs or taking something like the URL being up as canonical?
Who feels this pain?
TARGET USERS
Mid-to-senior software engineers applying to 30-100+ roles monthly across LinkedIn, Indeed, and company sites while dealing with prolonged silence and stale listings.
Context
Current Workarounds
Where's the gap?
EXISTING SOLUTION GAPS
OPPORTUNITY & VALUE
Strong repetition around long-open listings (700+ days), zero feedback after applications, and skepticism of real hiring activity.
Focuses exclusively on ghost detection and freshness signals rather than matching or resume tools; leverages large-scale posting longevity data.
Browser extension and web app that scores any job posting for ghost probability using age, company patterns, and activity signals, prioritizing real opportunities.
How does it make money?
MONETIZATION
Model
Engineers already invest dozens of hours building custom trackers and applying to dead listings; signals show frustration with wasted effort and users actively seek better filtering to save time, making low monthly fee a clear ROI.
How do you ship it?
MVP PLAN
“Spot real hiring signals and skip ghost jobs before you apply.”
Browser extension and web app that scores any job posting for ghost probability using age, company patterns, and activity signals, prioritizing real opportunities.
Core Features
Weekly Roadmap
- •Build posting age parser and simple decay model
- •Create Chrome extension skeleton with overlay UI
- •Store user-tracked listings in backend
- •Implement LinkedIn DOM injection for scores
- •Add manual URL import and company heatmap
- •User authentication and basic tracking
- •UI refinements and error handling
- •Recruit beta testers from r/cscareerquestions
- •Validate scores against known long-open listings
- •Stripe integration for subscriptions
- •Launch on Product Hunt and relevant subreddits
- •Track conversion from free scans to paid
Launch as Chrome extension on Product Hunt and Reddit (r/cscareerquestions, r/jobs, r/ExperiencedDevs); target tech Twitter/X job hunting threads.
RISKS & ASSUMPTIONS
Top Risks
LinkedIn and Indeed may block or limit automated analysis needed for real-time scoring.
Some long-open roles may still be valid; false positives could erode user trust.
Job seekers in transition may prefer free tools even if frustrated.
Demand may drop significantly outside peak hiring periods.
Should you build it?
Run an Investment Memo to get a structured Go / No-Go verdict, competitor landscape, unit economics, and a 90-day validation roadmap for this opportunity.
Generate an investment memoWhat this score means
This idea scores in the upper-middle range of opportunities surfaced by MonetScope, with a validation sub-score of 8/10 against 3 independently sourced evidence signals. A "promising" rating usually indicates a real pain has been detected and discussed in the open, but the pipeline did not find enough signal to flag it as urgent or high-frequency. These opportunities can still produce excellent businesses — they often correspond to "boring" problems that established players have ignored — but the founder should expect a longer customer-development cycle to confirm willingness to pay.
Why this matters for SaaS founders
It sits at the intersection of "analytics", "automation", "browser-extension", which makes it relevant to a specific subset of founders rather than a generic horizontal opportunity. SaaS opportunities at this stage tend to win on the strength of their initial wedge — a single workflow that the target user runs every week, where the existing solution is either spreadsheets, a clunky incumbent feature, or a manual process they hate. The build cost is moderate; the distribution cost is everything. The MonetScope pipeline surfaces this category alongside other saas signals, which is why it appears here rather than in a generic "trending ideas" feed.
Scores are derived from real forum discussions across Reddit, Hacker News and X, weighted by evidence volume and signal quality. How scoring works
Frequently asked questions
Is "GhostFilter: Real-Time Ghost Job Detector for Tech Roles" a real validated startup idea or just an AI-generated suggestion?
MonetScope does not generate ideas from a language model's imagination. Every opportunity on this site is anchored to specific source posts and comments from real public discussions — typically on Reddit, Hacker News, or X — where actual users describe the pain in their own words. The AI's role is structuring, scoring, and grouping those signals into a navigable opportunity, not inventing the problem.
How recent is the underlying data for analytics?
MonetScope's spider pipeline runs continuously and surfaces opportunities as new evidence accumulates. The "Updated" date in the header reflects the most recent re-scoring of this specific opportunity. Most saas opportunities visible in the public catalog draw from discussions in the last 30-60 days; older signals are de-prioritized because user pain shifts faster than most founders assume.
What's the difference between "overall score" and "validation score"?
Overall score is a composite across six dimensions — pain, urgency, willingness to pay, market size, defensibility, and execution ease — designed to give a single number for triage. Validation score is narrower: it asks "how cleanly does the same signal repeat across independent sources?" An opportunity can score high on overall but lower on validation when one or two large discussions dominate the evidence; conversely, validation can be high on a smaller-overall idea where the signal is consistent but the addressable market is modest.