6.4mediumCONDITIONAL GO

GhostJob Detector

Browser extension that scores job listings on likelihood of being real vs. fake/internal-only postings

SaaSMid-to-senior tech professionals actively job searching, especially in Europe...
The Gap

Job seekers waste months applying to and interviewing for positions that don't actually exist — posted only for HR optics, investor reports, or internal compliance

Solution

Aggregate signals (posting age, repost frequency, company hiring velocity, Glassdoor/LinkedIn data, user reports) to assign a 'realness score' to each job listing; flag likely ghost jobs before candidates invest time

Revenue Model

Freemium — free browser extension with basic scores, $9.99/mo premium for detailed analytics, company-level hiring pattern reports, and alert filters

Feasibility Scores
Pain Intensity8/10

Job seekers routinely report spending 3-6 months applying to positions that never existed. The emotional toll — wasted interview prep, ghosted after rounds, false hope — is severe. The HN thread sentiment ('most of them have dummy openings') reflects widespread frustration. This is a top-3 pain point for anyone actively job searching.

Market Size6/10

US alone has ~6M active job seekers at any time, EU adds another ~10M+. Mid-to-senior tech professionals are a subset (~2-3M addressable). At $9.99/mo with even 1% penetration of addressable market, that is ~$2.5-3M ARR. TAM is meaningful but niche — this is not a billion-dollar market unless it expands beyond tech or adds B2B employer-facing products.

Willingness to Pay5/10

Job seekers are historically reluctant to pay for job search tools — LinkedIn Premium being the notable exception and even that sees high churn. The $9.99/mo price point is reasonable but competes with free alternatives (Reddit communities, manual checking). Best signal: LinkedIn Premium proves some WTP exists. Conversion will likely be low (2-5%) unless the accuracy is demonstrably high. European markets may be slightly more WTP-friendly.

Technical Feasibility6/10

A solo dev can build a basic browser extension MVP in 4-8 weeks, BUT accuracy is the hard part. Aggregating signals from LinkedIn, Glassdoor, and company career pages requires scraping that violates most ToS and is subject to breakage. Building a reliable multi-signal scoring model needs training data that does not cleanly exist — there is no labeled dataset of confirmed ghost vs real jobs. The extension shell is easy; the intelligence layer is genuinely hard to get right.

Competition Gap8/10

No dominant player exists. The space is fragmented with tiny indie tools. LinkedIn/Indeed are structurally misaligned (ghost jobs boost their metrics). Glassdoor has the data but not the product. This is a clear whitespace where the first well-executed product wins. The browser extension overlay approach — scoring jobs on any platform — is particularly unaddressed.

Recurring Potential5/10

Job searching is inherently episodic, not continuous. A user might subscribe for 3-6 months during active search, then churn. This creates a high-churn subscription model unless you add always-on value (market monitoring, passive opportunity alerts, salary benchmarking). Compare to LinkedIn Premium which has the same problem — most users subscribe during job search then cancel. LTV will be capped by search duration.

Strengths
  • +Clear whitespace — no dominant competitor and structural misalignment prevents incumbents from building this
  • +Strong emotional resonance — ghost jobs are a visceral frustration with growing media/regulatory attention
  • +Browser extension distribution model is proven (Honey, Grammarly) and has low CAC via Chrome Web Store
  • +European market focus is smart — less competitive than US, strong privacy/worker-protection regulatory tailwinds
  • +Community/crowdsource layer creates a data moat that improves with scale
Risks
  • !Accuracy is existential — false positives (flagging real jobs) will destroy trust faster than false negatives. Without a labeled training dataset, building reliable scoring is the core technical risk
  • !Scraping dependency — LinkedIn, Glassdoor, and Indeed actively fight scrapers. A ToS violation or API lockout could break the product overnight
  • !Episodic usage = high churn — job seekers subscribe during search then cancel, capping LTV at ~$30-60 per user
  • !Legal risk — companies whose listings get flagged as ghost jobs may push back legally, especially in EU jurisdictions
  • !Feature, not product — any major job platform could add a 'listing freshness/realness' score as a feature, commoditizing the standalone tool
Competition
GhostJobs.com / Ghost Job Buster

Community-driven platform where job seekers crowdsource reports of suspected ghost job listings. Users flag listings they believe are fake, building a shared database of questionable postings.

Pricing: Free
Gap: No real-time detection, no browser extension, relies entirely on user reports so coverage is sparse, no algorithmic scoring or multi-signal analysis
LinkedIn (Premium + Hiring Signals)

Shows 'actively hiring' badges, application counts, posting age, and recruiter responsiveness indicators. Premium tier adds insights on who viewed your profile and how you compare to other applicants.

Pricing: Free basic / $29.99/mo Premium
Gap: Structurally incentivized NOT to flag ghost jobs (more listings = more traffic/revenue). No ghost job scoring. Criticized as one of the biggest hosts of ghost job listings.
Glassdoor (Interview & Company Reviews)

Provides company reviews, interview experience reports, salary data, and hiring process transparency. Job seekers can indirectly assess legitimacy by reading interview reviews and company ratings.

Pricing: Free (ad-supported
Gap: No dedicated ghost job detection feature, reviews can be gamed/manipulated, no real-time scoring on job listings, data is retrospective not predictive
Otta (now Welcome to the Jungle)

Curated job platform that vets companies before listing positions. Focuses on quality over quantity, primarily serving tech/startup ecosystem with hand-picked job listings.

Pricing: Free for job seekers
Gap: Limited to tech/startup niche, much smaller volume than major boards, no scoring or transparency into why a listing is trusted, not available as a browser extension overlay on other platforms
Simplify / Teal / Huntr (Job Search Management Tools)

Job search productivity suites that help track applications, optimize resumes, manage pipelines, and organize the job hunt. Some are beginning to add basic job quality signals.

Pricing: Freemium, $10-30/mo premium tiers
Gap: Zero ghost job detection capability, focused on resume optimization and tracking rather than listing quality, could easily add ghost detection as a feature and commoditize a standalone tool
MVP Suggestion

Chrome/Firefox extension that overlays a simple red/yellow/green 'realness score' on LinkedIn and Indeed job listings. V1 signals: posting age, repost frequency, number of applicants vs. company size, and a community report button. Skip company-level analytics for MVP — just nail the per-listing score. Add a simple feedback loop where users report outcomes (got interview, got ghosted, position filled) to train the model over time.

Monetization Path

Free extension with basic red/yellow/green scores (drives installs and data collection) → $9.99/mo premium for detailed breakdowns, company hiring pattern reports, and ghost job alerts → $29.99/mo pro tier with API access and bulk analysis for recruiters/career coaches → B2B pivot: sell anonymized hiring signal data to workforce analytics firms or job boards wanting to differentiate on quality

Time to Revenue

8-12 weeks to MVP launch, 3-4 months to first paying users. Realistic path: weeks 1-6 build extension + basic scoring, weeks 7-8 beta with HN/Reddit job seeker communities, weeks 9-12 iterate on accuracy based on feedback, month 4 launch premium tier. First meaningful revenue ($1K MRR) likely at month 5-6. The long pole is accuracy — launching too early with bad scores will poison the well.

What people are saying
  • most of them have just dummy openings for internal procedures/investor reports
  • No companies are hiring and all jobs are fake
  • HR wants you to think so, otherwise even they are not safe
  • jobs and interviews for vacancies that don't exist so those still left in HR can seem busy
  • Agencies simply collect data and will consume your time with intake interviews