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Milian Lastre ZequeiraEN
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Résumé

Milian Lastre Zequeira

Software & Systems Engineer · Web Developer · Offensive Security

Denver, CO · hola@saintmilian.com

Profile

Software engineer in Denver, Colorado. I build fast bilingual sites and test their security. Born in Cuba.

Competencies

  1. 01

    Software architecture

    Type-safe system design, domain modeling, and APIs that age well.

    TypeScriptNext.js App RouterReact 19 / RSCREST / JSON-RPCDomain modeling
  2. 02

    Distributed systems & scalability

    Edge and serverless, caching, queues, and rate-limiting under real load.

    Edge / serverlessCachingQueues & jobsRate limitingIdempotency
  3. 03

    Web engineering & performance

    Bilingual, accessible sites with Core Web Vitals in the green.

    i18n / hreflangSEO técnicoCore Web VitalsTailwind CSS v4Accesibilidad (a11y)
  4. 04

    Application security & pentesting

    Threat modeling and offensive testing — I build, and I also break.

    OWASP Top 10Burp Suitenmap / reconThreat modelingCTF / HTB
  5. 05

    DevOps · CI/CD · infrastructure

    Pipelines that fail loud, reproducible deploys, infrastructure as code.

    GitHub ActionsVercel / CloudflareDockerTerraformObservability
  6. 06

    Data engineering & persistence

    Schemas that respect invariants; SQL that doesn't surprise in production.

    PostgreSQLSQL tuningDuckDB / polarsZod validationMigrations
  7. 07

    Testing, quality & verification

    Red-green-refactor, property-based testing, and gates that catch regressions.

    Vitest / pytestPlaywrightType-safetyCI gatesCode review
  8. 08

    Technical & product leadership

    Deciding what to build, not just building it well.

    Decisiones de arquitecturaMentoríaScoping / specsProduct senseDocumentación

Experience

  1. 2023 — presente

    Founder · Full-stack engineer

    Drippin Society · Denver, CO

    I build and operate a portfolio of production web properties — from architecture to deploy.

    • Bilingual (ES/EN) Next.js 16 sites with hreflang, technical SEO, and green Core Web Vitals.
    • In-house pipeline: type-safe content layer (Velite), transactional email (Resend), and CI on GitHub Actions.
    TypeScriptNext.jsReactTailwind CSSVercelPostgreSQL

  2. 2022 — presente

    Web engineer · Consulting

    Freelance · Remoto

    I design and build performant sites and apps for clients — focused on SEO and conversion.

    • The whole thing: design, code, deploy and measurement.
    TypeScriptReactNext.jsNode.jsVercel / Cloudflare

  3. En curso

    Security research · CTF

    Offensive security practice

    Ongoing offensive practice — recon, web exploitation, and sanitized CTF/HTB writeups.

    • Scope-first methodology, traceable evidence, and reports with CVSS and mitigation.
    • Responsible disclosure via HackerOne (@saintmilian13).
    Kali LinuxBurp Suitenmapffufpwntools

Education

  • Self-directed training

    Software engineering and offensive security, evidenced by portfolio and production work.

  • Ongoing CTF practice

    Hack The Box and CTF challenges, with sanitized public writeups.

  • HackerOne researcher

    Public profile @saintmilian13 — responsible vulnerability disclosure, verifiable on hackerone.com.

Contact