{
  "$schema": "https://raw.githubusercontent.com/jsonresume/resume-schema/v1.0.0/schema.json",
  "basics": {
    "name": "Mateus Lazarus",
    "label": "Senior Full-Stack Product Engineer",
    "email": "contateMateusLazarus@gmail.com",
    "url": "https://mateuslazarus.com",
    "summary": "With over 6 years of software engineering experience, I specialize in operating within highly regulated, high-stakes markets where technical reliability directly intersects with core business strategy. I operate with high agency—owning initiatives end-to-end from strategic planning and domain discovery to technical execution and post-implementation metrics.",
    "professional_summary": "With over 6 years of software engineering experience, I specialize in operating within highly regulated, high-stakes markets where technical reliability directly intersects with core business strategy. I operate with high agency—owning initiatives end-to-end from strategic planning and domain discovery to technical execution and post-implementation metrics.",
    "relocation": "Open to Relocation to London, UK / Skilled Worker Visa",
    "about_highlights": [
      {
        "title": "Autonomy with Purpose",
        "text": "I value the trust and responsibility to take ownership of complex, ambiguous challenges. I do my best work when I can develop a deep understanding of the business, shape pragmatic solutions, and carry an initiative from discovery through delivery—always with a clear focus on meaningful outcomes."
      },
      {
        "title": "Engineering Excellence Grounded in the Business",
        "text": "I care deeply about building reliable, thoughtfully designed systems, but I believe technical excellence is most valuable when it is grounded in genuine business understanding. I am at my best in teams that value both engineering craft and domain expertise, using each to strengthen the other."
      },
      {
        "title": "Thoughtful, Diverse Collaboration",
        "text": "I value working with people from different countries, disciplines, and perspectives who care deeply about their craft and the products they build. I contribute particularly well in collaborative, asynchronous environments where thoughtful communication, mutual trust, and a shared standard of excellence are part of the culture."
      }
    ],
    "location": {
      "city": "São Paulo",
      "region": "SP",
      "country": "Brazil"
    },
    "profiles": [
      {
        "network": "GitHub",
        "username": "mateus-lazarus",
        "url": "https://github.com/mateus-lazarus"
      },
      {
        "network": "LinkedIn",
        "username": "mateus-lazarus",
        "url": "https://www.linkedin.com/in/mateus-lazarus/"
      },
      {
        "network": "Website",
        "username": "mateuslazarus",
        "url": "https://mateuslazarus.com"
      }
    ]
  },
  "skills": [
    {
      "name": "TypeScript",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "JavaScript",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "Node.js",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "Python",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "Clojure",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "ClojureScript",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "C#",
      "category": "language",
      "level": "expert"
    },
    {
      "name": "SQL",
      "category": "language",
      "level": "advanced"
    },
    {
      "name": "Next.js",
      "category": "framework",
      "level": "advanced"
    },
    {
      "name": "React.js",
      "category": "framework",
      "level": "advanced"
    },
    {
      "name": "HTML5/CSS3",
      "category": "framework",
      "level": "advanced"
    },
    {
      "name": "TailwindCSS",
      "category": "framework",
      "level": "advanced"
    },
    {
      "name": "Angular",
      "category": "framework",
      "level": "intermediate"
    },
    {
      "name": "Express.js",
      "category": "framework",
      "level": "advanced"
    },
    {
      "name": "PostgreSQL",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "GCP",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "AWS (EKS, Fargate, Lambda, S3)",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Terraform",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Docker",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Kubernetes",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Kafka",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Redis",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Agentic Workflows",
      "category": "domain",
      "level": "advanced"
    },
    {
      "name": "AI Model Context Protocols (MCP)",
      "category": "domain",
      "level": "advanced"
    },
    {
      "name": "LangGraph",
      "category": "domain",
      "level": "intermediate"
    },
    {
      "name": "Claude Code",
      "category": "domain",
      "level": "advanced"
    },
    {
      "name": "Gemini Enterprise Agent Platform",
      "category": "domain",
      "level": "advanced"
    },
    {
      "name": "Grafana",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Datadog",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Prometheus",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Splunk",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "New Relic",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Playwright",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "Reqnroll",
      "category": "tool",
      "level": "advanced"
    },
    {
      "name": "SpecFlow",
      "category": "tool",
      "level": "advanced"
    }
  ],
  "experience": [
    {
      "id": "nubank-2026",
      "company": "Nubank",
      "role": "Software Engineer",
      "location": "São Paulo, Brazil",
      "date": {
        "start": "2025-10"
      },
      "description": "Largest digital bank in Latin America (BR, CO, MX, US)",
      "highlights": [
        {
          "text": "Co-founded the Reconciliation team within Global Platforms & Core Banking, operating in an English-first, async international team across 4+ time zones.",
          "tags": [
            "reconciliation",
            "core-banking",
            "international"
          ]
        },
        {
          "text": "Led the end-to-end discovery and architecture for expanding reconciliation pipelines to support global debit products, collaborating directly with cross-functional stakeholders across four countries.",
          "tags": [
            "discovery",
            "architecture",
            "debit"
          ]
        },
        {
          "text": "Re-engineered 2 legacy services processing 100M+ daily transactions, achieving 100% observability, refactoring model designs, and enabling automated, real-time tracking of core operational KPIs.",
          "tags": [
            "legacy-modernization",
            "observability",
            "kpis"
          ]
        },
        {
          "text": "Accelerated engineering throughput across the team to 6–8 PRs per engineer weekly with <1 day review turnaround time by optimizing development workflows.",
          "tags": [
            "developer-productivity",
            "engineering-culture"
          ]
        }
      ],
      "technologies": [
        "Clojure",
        "ClojureScript",
        "Python",
        "Distributed Systems",
        "Microservices",
        "Kubernetes",
        "Kafka",
        "Grafana",
        "Prometheus",
        "AWS",
        "LangGraph",
        "Claude Code"
      ]
    },
    {
      "id": "stone-2022",
      "company": "Stone Co.",
      "role": "Software Engineer",
      "location": "São Paulo, Brazil",
      "date": {
        "start": "2022-04",
        "end": "2025-08"
      },
      "description": "Nasdaq-listed payment fintech (similar to Stripe/Adyen)",
      "highlights": [
        {
          "text": "Architected high-scale full-stack applications and microservices handling 12B+ annual requests while maintaining 99.95%+ uptime and >95% unit test coverage.",
          "tags": [
            "high-scale",
            "reliability",
            "testing"
          ]
        },
        {
          "text": "Designed and launched an internal Next.js/TypeScript application for risk analysts, turning a complex 10-page manual workflow into a streamlined UI that cut processing time by 50% and removed user errors.",
          "tags": [
            "nextjs",
            "typescript",
            "workflow-optimization"
          ]
        },
        {
          "text": "Provisioned and managed cloud infrastructure using Terraform, Docker, and Kubernetes, implementing CI/CD pipelines via GitHub Actions and Azure Pipelines.",
          "tags": [
            "cloud",
            "iac",
            "ci-cd"
          ]
        },
        {
          "text": "Integrated observability, logging, and data analytics solutions utilizing Datadog, Grafana, Splunk, and Google BigQuery.",
          "tags": [
            "observability",
            "analytics"
          ]
        }
      ],
      "technologies": [
        "C#",
        ".NET",
        "Next.js",
        "TypeScript",
        "Azure",
        "Kafka",
        "Docker",
        "Kubernetes",
        "Terraform",
        "Datadog",
        "Grafana",
        "Splunk",
        "Google BigQuery"
      ]
    },
    {
      "id": "freelance-2019",
      "company": "Freelance / Independent Contractor",
      "role": "Full-Stack Software Engineer",
      "date": {
        "start": "2019-01",
        "end": "2022-04"
      },
      "description": "Independent full-stack product engineering for commercial clients",
      "highlights": [
        {
          "text": "Delivered bespoke full-stack web platforms using Node.js, TypeScript, React, Express, and PostgreSQL/MySQL for commercial clients.",
          "tags": [
            "full-stack",
            "product-engineering"
          ]
        },
        {
          "text": "Built end-to-end CRM and access control systems for Atenas Fit, automating membership monitoring, entry security, and unpaid customer tracking to improve retention and operational efficiency.",
          "tags": [
            "crm",
            "access-control",
            "automation"
          ]
        }
      ],
      "technologies": [
        "Node.js",
        "TypeScript",
        "React",
        "Express",
        "PostgreSQL",
        "MySQL"
      ]
    }
  ],
  "projects": [
    {
      "id": "stone-specialized-risk-credit",
      "title": "Specialized Risk & Credit Analysis Platform",
      "subtitle": "at Stone Co.",
      "description": "Led and built an internal web platform for risk analysts using Next.js, TypeScript, and Google Scripts to streamline complex business registration and risk assessment workflows.",
      "highlights": [
        {
          "text": "Reduced a tedious 10-page, 40-minute manual process by 50%, drastically improving operational agility, user satisfaction, and eliminating human data-entry errors.",
          "tags": [
            "operational-impact",
            "workflow-optimization"
          ]
        },
        {
          "text": "Modernized Stone's core risk analysis infrastructure, replacing a legacy monolith with scalable microservices supporting high-value assessments exceeding R$20M (~USD 5M) per evaluation.",
          "tags": [
            "system-redesign",
            "microservices"
          ]
        }
      ],
      "technologies": [
        "Next.js",
        "TypeScript",
        "Google Scripts",
        "Microservices"
      ],
      "links": [
        {
          "label": "site",
          "url": "https://www.stone.com.br"
        }
      ],
      "featured": true,
      "detailed": true
    },
    {
      "id": "nubank-reconciliation",
      "title": "Global Core Reconciliation & Operations Platform",
      "subtitle": "at Nubank",
      "description": "Architected and scaled the global reconciliation platform governing Mastercard clearing, settlement, chargebacks, and fee collections across BR, CO, MX, and US, processing 100M+ customer transactions daily.",
      "highlights": [
        {
          "text": "Improved platform accuracy to reduce annual financial exposure from ~USD 240M to under USD 12K within 12 months, providing executive leadership with near-real-time balances.",
          "tags": [
            "risk-reduction",
            "financial-integrity"
          ]
        },
        {
          "text": "Spearheaded company-wide AI adoption by authoring internal AI Model Context Protocol (MCP) guides (+3,350 users, +10,000 views) and hosting hackathons, raising business unit AI engagement from 33% to 86%.",
          "tags": [
            "ai-tooling",
            "developer-enablement"
          ]
        }
      ],
      "technologies": [
        "Clojure",
        "Distributed Systems",
        "Microservices",
        "Kubernetes",
        "Kafka",
        "Grafana",
        "Prometheus",
        "AWS",
        "MCP"
      ],
      "links": [],
      "featured": true,
      "detailed": true
    },
    {
      "id": "stone-credit-products",
      "title": "Credit Product Platform & Short-Term Credit",
      "subtitle": "at Stone Co.",
      "description": "Built and scaled core credit systems from scratch to R$1B+ in portfolio value, increasing capacity from 10K to 1M+ requests per day while maintaining 99.95%+ uptime.",
      "highlights": [
        {
          "text": "Engineered automated approval and repayment pipelines managing R$50M+ in short-term credit, delivering sub-2-minute customer approvals.",
          "tags": [
            "automated-risk",
            "origination"
          ]
        }
      ],
      "technologies": [
        "C#",
        ".NET",
        "Azure",
        "Kafka",
        "Docker",
        "Kubernetes",
        "Terraform"
      ],
      "links": [
        {
          "label": "site",
          "url": "https://www.stone.com.br/capital-de-giro"
        },
        {
          "label": "site",
          "url": "https://www.stone.com.br/limite-da-conta"
        }
      ],
      "featured": true,
      "detailed": true
    }
  ],
  "education": [
    {
      "id": "cs-degree",
      "institution": "Universidade Estácio de Sá",
      "degree": "Bachelor of Science",
      "field": "Computer Science",
      "date": {
        "start": "2022-01",
        "end": "2025-12"
      },
      "highlights": [
        "GPA: 9.6 / 10.0"
      ]
    }
  ],
  "certifications": [],
  "languages": [
    {
      "language": "English",
      "fluency": "Professional / Fluent"
    },
    {
      "language": "Portuguese",
      "fluency": "Native"
    },
    {
      "language": "Spanish",
      "fluency": "Conversational"
    }
  ],
  "interests": [
    {
      "name": "High-Scale Financial Systems",
      "keywords": [
        "Distributed Systems",
        "Reliability",
        "Core Banking"
      ]
    },
    {
      "name": "AI & Automation",
      "keywords": [
        "Agentic Workflows",
        "MCP",
        "LangGraph",
        "Claude Code"
      ]
    }
  ]
}