Candidate Portfolio — HiringFunnel
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MarkAnthony Alejo

Backend Engineer · AI/LLM integration (GPT-4, OpenAI API) into production applications · Performance optimization (30% latency reduction, load time improvements)

San Diego, USOn-sitehiringfunnel.com/u/mark-anthony-alejo
Book intro with MarkView conversion kit
Backend EngineerFrontend EngineerFull Stack Software Engineer
01 — Positioning

Where Mark is headed.

Mark is a full-stack engineer who pivoted from firefighting into software development, bringing discipline and high-pressure problem-solving to architecting AI-powered developer tools. He specializes in shipping production-grade applications that combine modern frontend frameworks with robust backend systems, with proven expertise in performance optimization and code quality automation.

What Mark brings
  1. 01AI/LLM integration (GPT-4, OpenAI API) into production applications
  2. 02Performance optimization (30% latency reduction, load time improvements)
  3. 03Full-stack development across React, Node.js, Python with secure API design
  4. 04Code quality automation and technical debt analysis tooling
  5. 05CI/CD pipeline implementation and automated testing frameworks
02 — Proof

The receipts.

Numbers first. Every metric below is something Mark shipped or drove — not a claim, an outcome.

  • Proof 01
    Architected TypeScript/Node.js/LLM integration reducing manual code review time by 15 minutes per session
    AI-powered VS Code extension for technical debt evaluation
  • Proof 02
    Conducted 5+ code reviews weekly for junior and senior engineers, shipping 5+ full-stack applications
    Code review leadership
  • Proof 03
    Reduced page load times and API response latency by 30% through routing optimization and asynchronous workflows
    Full-stack performance optimization across multiple applications
  • Proof 04
    Built React/Flask/PostgreSQL full-stack system with role-based access control for mission-critical hardware chain-of-custody
    QA Audit and Documentation Platform
03 — Role fit

Operating range.

Where Mark plugs in fastest — sorted from strongest fit to adjacent. Not a wishlist; a routing map.

  • primary fit
    Full Stack Engineer
    Mid-level
  • secondary fit
    AI/ML Integration Engineer
    Mid-level
  • secondary fit
    Backend API Developer
    Mid-level
  • adjacent fit
    DevTools Engineer
    Mid-level