EXPERIENCE

A career in fintech & platforms

I have led authorization, data, and platform teams in PCI/LGPD environments — now I help founders align engineering with business outcomes.

  • CompliancePCI DSS · LGPD · regulated domains
  • Operations99.99% availability · incident governance
  • LeadershipTeams up to 12 engineers · board-aligned OKRs
12+
Years in engineering
17
Roles on this timeline
6+
Years Fintech

Roles most relevant to regulated fintech, payments, and data leadership.

  1. Technical Co-founder

    Current

    Pedido Digital

    Aug 2026 – Present

    Co-founded and lead technical development of a B2B ordering platform that lets retail store owners place purchase orders directly with brand sales representatives, with AI-assisted workflows throughout. Own the full technical build—architecture, backend, and product engineering—from the ordering workflow to the operational tooling that keeps the business running, while a co-founder leads the business and domain strategy.

    Multi-tenant web application · AI-assisted ordering workflow · security and reliability for non-technical retail staff in the field.

  2. Technical Co-founder

    Current

    CartaSegura

    Aug 2026 – Present

    Co-founded CartaSegura, a Brazilian marketplace connecting buyers and sellers of already-awarded consortium quotas ("cartas contempladas"), live in production since August 2026. As lead/founding engineer, designed and built nearly the entire technical product—a web marketplace and an AI-powered conversational agent, containerized and deployed together on a single production server.

    Infrastructure-as-code deployment pipeline with encrypted secrets · full observability stack built from scratch (centralized logging, dashboards, custom alerting) · end-to-end product and architecture ownership, including a documented pivot in the primary customer contact channel · LGPD data-privacy compliance by design.

  3. Senior Staff Software Engineer

    Current

    Intelie

    Jun 2026 – Present

    Intelie bridges the gap between real-time data and AI workflows, cleansing and transforming high-frequency operational data into contextualized intelligence that powers engineering models, workflow automation, and AI agents.

    Go · Java · TypeScript · distributed systems · technical leadership

  4. Lead Software Engineer

    Dock

    Jun 2023 – Jun 2026

    Lead Authorization & Clearing for one of Latin America's largest fintech enablers—millions of private-label, debit, and credit transactions across the region.

    99.99% availability · PCI DSS · backlog and risk alignment · on-call and incident response · cross-functional SWE and QA teams.

"João is the kind of professional that mixes outstanding technical skills with a lot of business knowledge and curiosity. I learned a lot from him during the time we worked together."

Raphael Zagrajsek
Growth & CRM @ Neon
via LinkedIn

More in fintech & platforms

Earlier roles building data pipelines, cloud platforms, and high-traffic systems.

  1. Head of Data

    Quanto

    Sep 2021 – Apr 2023

    Built the Data department from 2 to 12 engineers across Governance, Platform, and Insights.

    Legacy-debt roadmap · individual development plans · translated board goals into technical OKRs aligned with company strategy.

  2. Tech Manager | Platform

    Pagar.me

    Feb 2021 – Jul 2021

    Managed PCI DSS platform infrastructure and API Gateway security for high-volume payments.

    Flight Levels cadence with executives—aligned infrastructure investment with business value and strategy.

  3. Software Engineer

    Pagar.me

    Nov 2019 – Feb 2021

    Evolved PCI DSS environments in Go; owned API Gateway on OpenResty/Lua.

    HashiCorp stack (Nomad, Consul, Vault) on AWS with IaC · incident response with DevOps for reliability.

  4. Solutions Architect

    pag!

    Jun 2019 – Oct 2019

    Led migration from on-prem and Oracle Cloud to AWS; introduced DevOps and containers on ECS.

    Network and account design · Terraform, Ansible, Packer, and Python for repeatable deployments.

  5. Data Engineer

    pag!

    Jul 2018 – Jun 2019

    Modernized BI: Pentaho pipelines from Oracle to AWS Redshift; data lake for fraud, AML, and customer behavior.

    Replaced Tableau with Metabase for self-serve analytics · Jenkins, Lambda, Jupyter in the stack.

Foundation roles (2007–2016)8 roles

  1. Software Engineer

    Wine.com.br

    Feb 2018 – Jul 2018

    Ruby web crawlers and Python notebooks for merchandising and operations insights.

    Dockerized Jupyter Lab · microservices on API Gateway, Lambda, Cognito, and DynamoDB.

  2. Software Engineer

    B2W Digital

    Aug 2016 – Jan 2018

    Microservices in Go and Java; customer-facing web apps in Node.js and React.

    Spark on AWS EMR · MongoDB and Cassandra · Kibana dashboards · Mesos/Marathon deploys with Bamboo CI and New Relic.

  3. Software Engineer

    Intelie

    May 2013 – Aug 2016

    Rails/JRuby products, Linux/AWS provisioning (Vagrant, Puppet, Ansible), and polyglot delivery.

    Integrations from Analytics, Zendesk, SNMP, and more · Selenium Grid on Docker · monitoring collectors in Go.

  4. Software Engineer

    Giran Ecommerce Solutions

    Apr 2012 – Jan 2013

    Ruby on Rails e-commerce features and jQuery frontends.

    Linode provisioning with Bash · MySQL operations, backups, and complex queries.

  5. Community Manager

    iMasters

    Sep 2011 – Apr 2012

    Developer support for PayPal, MoIP, and Buscapé payment APIs.

    Technical writing, article review, and translations for the developer portal.

  6. System Admin

    UFES

    Apr 2010 – Mar 2011

    Ethernet and wireless networks · Linux services at LPRM lab.

    MediaWiki and Drupal sites · MySQL administration and tuning.

  7. Research Student

    UFES

    Jul 2008 – Jul 2009

    Multiplatform Python applications · Oracle Grid Engine for HPC scheduling.

    Matlab for digital image processing · LDAP directory services.

  8. System Admin

    UFES

    Apr 2007 – Jul 2008

    Linux, FreeBSD, and OpenBSD servers · Iptables, Bind, DHCP, Apache, Squid.

    MySQL and PostgreSQL · Xen virtualization · System Imager for machine cloning.

ANY INDUSTRY

Payment and data leadership in fintech is the proof — the same patterns apply wherever compliance, scale, and reliability matter.

How I work across domains →

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