Our Team

Senior engineers and consultants from LATAM.

/// SECTION — PERSONNEL

9 UNITS
  • Beatriz Chiarelli

    Beatriz Chiarelli

    Frontend Engineer

    • 8+ years
    • Brazil

    Crafts polished, accessible user interfaces with React, TypeScript, and Tailwind CSS. Specializes in mobile-first responsive design, component architecture, and design-system implementation. Writes comprehensive test suites with Playwright and Vitest. Integrates AI-driven features using OpenAI APIs. Strong eye for UX detail — animations, micro-interactions, and layout precision. Builds interfaces that feel fast, look sharp, and work everywhere.

  • Bruno Magrini

    Bruno Magrini

    Senior UI/UX Designer

    • 24+ years
    • Brazil

    Shapes product experiences from first sketch to final screen. Expert in Figma-based design workflows, interactive prototyping, and design-system architecture. Creates cohesive visual languages that scale across products. Uses Claude Design alongside traditional tools for rapid concept exploration and iteration. Focused on usability, accessibility, and designs that engineers can implement without guesswork.

  • Cesar Marzullo

    Cesar Marzullo

    Principal UI/UX Designer

    • 30+ years
    • Brazil

    Three decades of design expertise spanning brand identity, interaction design, and design systems. Works in Figma to produce production-ready interfaces — from wireframes and prototypes to pixel-perfect developer handoff. Defines visual language, component libraries, and design tokens that engineering implements directly. Bridges design and code with Claude Design for rapid iteration. Every screen ships with intent.

  • Diogo Dias

    Diogo Dias

    Founder & CEO

    • 27+ years
    • Wyoming, USA

    Full-stack architect spanning backend, data, DevOps, and frontend. Leads technical strategy across Python, Django, PostgreSQL, and AWS infrastructure. Designs multi-tenant SaaS architectures with Django REST Framework, Celery, Redis, and pgvector. Orchestrates CI/CD pipelines, containerized deployments, and infrastructure-as-code on AWS (ECS, EKS, RDS, Aurora, Terraform). Bridges engineering and product — writes code, reviews architecture, and steers the technical direction of every DHDTech.io project.

  • Guilherme Gonçalves

    Guilherme Gonçalves

    Staff Engineer

    • 12+ years
    • Brazil

    Operates across the full stack — from React and TypeScript on the frontend to Django, PostgreSQL, and Redis on the backend, plus AWS infrastructure. Architects scalable systems with Docker, Celery, and message-driven workflows. Deep experience with Terraform and CloudFormation for infrastructure-as-code on ECS and EKS. Moves fluidly between building features, hardening infrastructure, and mentoring engineers. The engineer you call when the problem spans three layers and nobody else knows where to start.

  • Lucas Lira

    Lucas Lira

    Senior Data Engineer

    • 7+ years
    • Brazil

    Designs and operates data pipelines and analytics infrastructure. Works with Databricks, PySpark, and PostgreSQL to transform raw data into structured, queryable datasets. Builds ETL workflows, data warehousing solutions, and real-time streaming pipelines. Bridges the gap between raw data and business intelligence — engineers the infrastructure that powers dashboards, reports, and machine learning workloads.

  • Mario Jimeno

    Mario Jimeno

    Senior Data Engineer

    • 18+ years
    • Guatemala City, Guatemala

    Builds and maintains production data infrastructure behind analytics, dashboards, and billing. Works across the AWS stack, orchestrating pipelines with Airflow and doing the heavy lifting with Spark, Snowflake, and Python. The results show up in real numbers. Cut cloud spend by 95 percent on one engagement and brought tenant onboarding down from three days to about twenty minutes on another. Moved analytics jobs that once needed a single server with 300GB of RAM onto EMR clusters, so the heavy work now runs on managed instances. Keeps hundreds of Airflow DAGs healthy each day and treats a silently failing pipeline as a bug worth chasing, not something to wait out. Has shipped data work for retail, advertising, and job platforms across the US and LATAM.

  • Rafael Brant

    Rafael Brant

    Senior Backend Engineer

    • 15+ years
    • Brazil

    Backend specialist focused on Django, PostgreSQL, and distributed systems. Designs and optimizes complex data models, high-throughput APIs with Django REST Framework, and asynchronous task pipelines with Celery and Redis. Works extensively with pgvector for semantic search and Stripe for billing infrastructure. Implements Google OAuth and Twilio integrations. Deep experience debugging performance bottlenecks in production — query plans, cache strategies, and database indexing are second nature.

  • Victor Requena

    Victor Requena

    Frontend Engineer

    • 6+ years
    • Uruguay

    Builds responsive, type-safe frontends with React, TypeScript, and Tailwind CSS. Focused on mobile-first architecture, component-driven design systems, and end-to-end testing with Playwright and Vitest. Works with OpenAI APIs to build AI-augmented user interfaces. Ships fast, tests thoroughly — every component gets a test suite. Experienced with Vite tooling and modern build pipelines.

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