About HLDHub

We Build the Growth Stack. Then We Run It.

HLDHub is a Northeast-based growth and technology agency for service businesses. We are operators and engineers — we build and run the systems ourselves, across 10 live franchise sites, every day.

An HLDHub engineer building the production stack — hands on a mechanical keyboard with PHP and schema on screen
The same stack we ship to clients — built in-house, in the open.
1,700+Ranked URLs live across the fleet
10Franchise sites built and operated in under a year
~95%Average Semrush Site Health across the fleet
$0.04–$0.18Median AI content cost per page

What We Actually Believe

  • Build, don't advise.

    Every service we sell, we run on our own properties first. The programmatic SEO system powering 1,700+ ranked URLs? We built it. The Claude API agent fleet generating and auditing content on cron? We wrote it. We don't sell slides — we ship code.

  • Measurement kills guesswork.

    We pull Google Ads, Meta, and TikTok into a single command center. We have GSC, Core Web Vitals, Semrush, and an internal uptime monitor running across all 10 sites. If something breaks or regresses, we see it before a customer does.

  • Security is infrastructure, not an afterthought.

    Every site we operate runs Cloudflare Turnstile, WAF, DKIM/SPF/DMARC email auth, AES-256-GCM secrets encryption, HMAC-signed APIs, and hardened .env files. We do not bolt security on at the end.

  • Automation compounds.

    An AI agent running on a cron job works while you sleep. We build content agents, indexing agents, social analysts, and ads analysts that compound output over time — without compounding your payroll.

What We Do

  1. PHASE 1

    Programmatic SEO & GEO Citability. We architect city-page systems, service clusters, and schema-rich content at scale — then wire in automatic Google Indexing and IndexNow so new pages reach search engines within minutes, not weeks. GEO citability layers in structured speakable markup, FAQ schema, and AI-search-ready content so your business gets cited in ChatGPT, Perplexity, and Google AI Overviews.

  2. PHASE 2

    Paid Ads Command Center. We build and manage a unified dashboard pulling Google Ads, Meta (Facebook/Instagram), and TikTok into one view — per-campaign metrics, AI-generated recommendations, anomaly alerts, and an autonomy ladder that tells you exactly where the machine is running and where a human is deciding. Management fee covers strategy and execution; ad spend is billed directly by the platforms.

  3. PHASE 3

    AI Agent Fleet. Custom Claude API agents on cron: content generation, SEO audits, city-page production, social media analysis, indexing retries, and cart recovery — all headless, all logged, all observable. Median per-page cost of $0.04–$0.18 versus the $80–$200 a freelance writer charges. Agents don't call in sick.

  4. PHASE 4

    Web Engineering & Security. We build on lean MVC PHP with direct SQL — no page builders, no bloat, full control over every URL and render path. That means CWV scores in the top 10% and zero mystery performance regressions. Security hardening (Turnstile, WAF, encrypted secrets, HMAC APIs) ships with every build, not as an optional upgrade.

HLDHub operations — a wall of live SEO analytics and campaign dashboards monitored in real time
Ten live markets, monitored from one room — the systems run whether or not anyone is watching.

Who runs HLDHub

  • Felipe Campos — Founder & Principal Engineer

    Built the programmatic SEO stack that powers Holiday Lights Decor across NJ, MA, CT, NH, RI, NY, PA, ME, DE and FL — ten state franchises, 1,700+ indexed URLs, 95% average Semrush Site Health. Also the architect behind AminoCore Research (peptide e-commerce, six AI agents, three-language pipeline), HLLLC franchisor (corporate site + CRM bridge), the Ads Command Center (Google / Meta / TikTok) and the RouterPay payments hub. Reachable at [email protected].

The Stack We Ship On

MVC PHP with direct SQL for the web layer — fast, SEO-controllable, no licensing fees. Claude API for every AI agent. Cloudflare for edge delivery, WAF, and FLUX AI image generation. Semrush + Google Search Console + Core Web Vitals for measurement. Stripe for billing with automatic state sales tax and card-processing-fee handling. Windsor.ai for unified paid-ads data ingestion. This is not a stack we assembled for a pitch deck — it is the stack running under our own revenue-generating sites right now, in production, in the Northeast US.

  • Application layer

    PHP 8.3 / MVC on nginx + PHP-FPM with OPcache + JIT. Sub-100ms TTFB at the edge. Full control over markup, schema, hreflang, canonical and pagination — none of the WordPress plugin tax. The same architecture we ship to clients.

  • AI & automation

    Claude API agents (Sonnet 4.6 for production, Haiku 4.5 for stubs/validation) with prompt caching, running on cron. JSON-output, schema-aware, voice-tuned. Median per-page generation cost across the portfolio: $0.04–$0.18.

  • Paid media & measurement

    Google Ads, Meta and TikTok unified in our Ads Command Center via Windsor.ai — per-campaign metrics, recommendations and alerts. Semrush Site Audit + Position Tracking cross-referenced with Google Search Console and Core Web Vitals.

  • Security & edge

    Cloudflare WAF + Turnstile, DKIM/SPF/DMARC email auth, AES-256-GCM secret encryption, hardened .env, HMAC-signed APIs and HLD OPS Monitor uptime alerting. AVIF/WebP media generated with Cloudflare FLUX — every image is original, not licensed.

The services we run on this stack

Everything above is productized. Browse the full catalog, or jump straight to a discipline.

Programmatic SEO GEO Citability Local SEO + GBP Paid Media AI Automation & Agents Web Engineering Security & Compliance All 14 services →

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