# Software Development

Senior engineers from LATAM, embedded into your team via The Density Method. AI engineering as the wedge, full stack and infra underneath.

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<!-- HERO -->
<section class="sw-hero">
  <div class="container">
    <div class="sw-breadcrumb">
      <a href="/">Density Labs</a> <span>/</span> Practices <span>/</span> Software Development
    </div>
    <h1>Engineering that <em>ships</em>.</h1>
    <p class="lede"><strong>Senior engineers from LATAM, embedded into your team via The Density Method.</strong> AI engineering is the wedge. The full stack and infrastructure underneath are why the wedge actually lands.</p>
  </div>
</section>

<!-- WHAT WE BUILD -->
<section class="sw-section">
  <div class="container">
    <div class="sw-header">
      <div class="section-eyebrow">What we build</div>
      <h2 class="section-h2">AI engineering. <em>Plus the rest of the stack</em>.</h2>
      <p class="section-sub">The AI work is new. The shipping discipline is not. Since 2016, we have shipped Rails, React, Node, Python, React Native, and cloud infrastructure for mid market US product teams.</p>
    </div>

    <div class="build-grid">
      <div class="build-card primary">
        <div class="build-tag">AI Engineering</div>
        <h3>Production AI features inside real products.</h3>
        <p>RAG systems wired into existing codebases. Agent architectures with eval infrastructure. LLM workflows that survive real users. Observability, fallbacks, and the unglamorous reliability work.</p>
        <div class="stack">RAG · Agents · Evals · MLOps · LLM UX</div>
      </div>
      <div class="build-card">
        <div class="build-tag">Full Stack Engineering</div>
        <h3>The product engineering work that already worked.</h3>
        <p>Web and mobile, frontend and backend, the whole loop. Same engineers that ship AI features ship the surrounding product. No hand offs between specialties.</p>
        <div class="stack">Rails · React · Node · Python · React Native</div>
      </div>
      <div class="build-card">
        <div class="build-tag">Cloud Infrastructure</div>
        <h3>The boring foundations AI features need.</h3>
        <p>Inference infrastructure, queues, vector stores, edge functions, CI/CD, cost monitoring. The plumbing that turns demos into systems your team can run on Monday.</p>
        <div class="stack">AWS · GCP · Cloudflare · Terraform · Docker</div>
      </div>
    </div>
  </div>
</section>

<!-- HOW WE ENGAGE -->
<section class="sw-section alt">
  <div class="container">
    <div class="sw-header">
      <div class="section-eyebrow">How we engage</div>
      <h2 class="section-h2">One framework. <em>Every engagement.</em></h2>
      <p class="section-sub">The Density Method is the operating system that runs every placement. Four phases, each with measurable exit criteria.</p>
    </div>

    <div class="method-phases">
      <div class="phase-card">
        <div class="phase-num">01</div>
        <div class="phase-name">Diagnose</div>
        <div class="phase-dur">2 weeks · fixed</div>
        <div class="phase-desc">Paid written diagnostic. Capability gap analysis, architecture audit, 90 day plan. Yours to keep regardless of what comes next.</div>
      </div>
      <div class="phase-card">
        <div class="phase-num">02</div>
        <div class="phase-name">Match</div>
        <div class="phase-dur">7–10 days</div>
        <div class="phase-desc">Two to three vetted candidates from a 2% acceptance pool. You meet them, you decide. No body shopping.</div>
      </div>
      <div class="phase-card">
        <div class="phase-num">03</div>
        <div class="phase-name">Embed</div>
        <div class="phase-dur">30 / 60 / 90</div>
        <div class="phase-desc">Structured 30/60/90 plan with weekly tech lead 1:1s, monthly architecture review, and AI playbook access.</div>
      </div>
      <div class="phase-card">
        <div class="phase-num">04</div>
        <div class="phase-name">Retain</div>
        <div class="phase-dur">Multi-year</div>
        <div class="phase-desc">The years long arc that makes operational density compound. Tenure is the input. Compounding context is the output.</div>
      </div>
    </div>

    <div style="text-align: center; margin-top: 60px;">
      <a href="/method/" class="btn-primary">Read how the Method works →</a>
    </div>
  </div>
</section>

<!-- STATS BAND -->
<section class="stats-band">
  <div class="container">
    <div class="sw-header">
      <div class="section-eyebrow">By the numbers</div>
      <h2 class="section-h2">A decade of <em>shipping</em>.</h2>
      <p class="section-sub">Not a pitch. The actual numbers, drawn from the engagements we are running today.</p>
    </div>
    <div class="stats-grid">
      <div class="stat-cell">
        <div class="stat-num">96%</div>
        <div class="stat-label">Client retention</div>
      </div>
      <div class="stat-cell">
        <div class="stat-num">100%</div>
        <div class="stat-label">Success rate · 6 yrs</div>
      </div>
      <div class="stat-cell">
        <div class="stat-num">120 day</div>
        <div class="stat-label">Replacement guarantee</div>
      </div>
      <div class="stat-cell">
        <div class="stat-num">7–10</div>
        <div class="stat-label">Days to match</div>
      </div>
    </div>
  </div>
</section>

<!-- STACK TABLE -->
<section class="sw-section">
  <div class="container">
    <div class="sw-header">
      <div class="section-eyebrow">Stack</div>
      <h2 class="section-h2">What our engineers <em>actually run</em>.</h2>
      <p class="section-sub">The languages, frameworks, and infrastructure our team has shipped in production. Not a list of buzzwords, things we have on the bench right now.</p>
    </div>

    <div class="stack-table">
      <div class="stack-row head">
        <div class="stack-cat">Layer</div>
        <div class="stack-list">Production capabilities</div>
      </div>
      <div class="stack-row">
        <div class="stack-cat">AI / ML</div>
        <div class="stack-list">OpenAI · Anthropic · LangGraph · pgvector · Pinecone · Weaviate · Custom evals</div>
      </div>
      <div class="stack-row">
        <div class="stack-cat">Backend</div>
        <div class="stack-list">Ruby on Rails · Node.js · Python · FastAPI · Postgres · Redis</div>
      </div>
      <div class="stack-row">
        <div class="stack-cat">Frontend</div>
        <div class="stack-list">React · Next.js · TypeScript · Tailwind · Streaming UIs</div>
      </div>
      <div class="stack-row">
        <div class="stack-cat">Mobile</div>
        <div class="stack-list">React Native · Native bridges · App Store / Play deployment</div>
      </div>
      <div class="stack-row">
        <div class="stack-cat">Infrastructure</div>
        <div class="stack-list">AWS · GCP · Cloudflare · Terraform · Docker · GitHub Actions</div>
      </div>
      <div class="stack-row">
        <div class="stack-cat">Observability</div>
        <div class="stack-list">Datadog · Sentry · OpenTelemetry · Custom eval dashboards</div>
      </div>
    </div>
  </div>
</section>

<!-- CTA -->
<section class="sw-cta">
  <div class="container">
    <h2>Need senior engineers <em>that actually ship</em>?</h2>
    <p>30 minutes. No deck. We figure out together whether the work is real and whether we are the right partner.</p>
    <a href="" class="btn-primary">Book a 30 min call →</a>
  </div>
</section>