May 2024 – May 2025 · 1 yr

• Led Nubank’s Mobile Platform BU (~100 engineers) through a high-growth transformation focused on app performance, platform consolidation, and global readiness. Drove the App Excellence Program, orchestrated enterprise-wide reorgs, and positioned Mobile as a key lever for user experience, product velocity, and platform strategy.
• 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬:
• Designed and executed a multi-quarter org design plan, scaling from 50 → 100 engineers across 4 strategic reorgs.
• Led the company-wide App Excellence Program, engaging 40+ Staff+ engineers across 20+ business units.
• Directed mobile architecture, performance, observability, and developer platforms used by 100M+ customers and Nubank's 2,000+ engineers.
• Partnered with VPs, GMs, and senior leaders across LATAM to standardize engineering practices and scale product velocity.
• 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬:
• Reduced p90 App Ready to Use Time (custom metric) by 65% on Android (26s → 9s), 50% on iOS (10s → 5s); ANRs down from 1.3% → 0.1%.
• Launched App Storage v2: cutting screen load time by 40% and app errors by 5%, generating R$124M NPV in 12 months—proving for the first time in company's history that app performance = business performance.
• Ran App Excellence Program across 20+ BUs, aligning 40+ Staff+ engineers and doubling reliability scores in 5 months.
• Negotiated and closed a $20M SaaS contract, achieving major cost savings and observability standardization.
• Led 4 strategic reorgs with no attrition, increasing team engagement and delivery velocity.
• Built new Nubank’s new real-time analytics platform used for fraud detection and funnel analysis.
• Established Flutter Upgrade and Native Removal initiatives, laying the foundation for international expansion.
• Standardized observability tooling (OpenTelemetry, Instabug), reducing incident resolution time from days to minutes.
• Unified mobile practices across MX, CO, and BR; shifted GMs’ mindset to treat app quality as a business-critical lever.

Jul 2023 – Aug 2024 · 1 yr 1 mo

• Led Nubank’s Mobile Foundations org through a critical consolidation and modernization phase. Unified multiple infra and runtime teams into a single platform group, modernized core pipelines, and delivered major cost and latency improvements. Scoped and staffed foundational programs that would later evolve into company-wide App Excellence efforts.
• 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬:
• Consolidated Mobile Platform, App Core, BDC, App Analytics and CI/CD infra teams into a unified Foundation-aligned org.
• Directed CI/CD infra, observability, and platform architecture, with ownership of app startup, app errors, and latency metrics.
• Acted as final decision-maker for vendor evaluation, infrastructure contracts, and platform-wide system upgrades.
• Improved on-call, release, and incident response processes across BUs; embedded performance accountability across teams.
• Managed platform vendor relationships (Amplitude, Sentry, MacStadium, Apple, Google), partnering with Finance & Legal.
• Mentored 7+ senior leaders; oversaw onboarding and accountability for TPM, Eng Mgr, and Staff+ transitions.
• 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬:
• Achieved 100% BDC adoption for new screens, following BDC’s formal designation as the canonical mobile platform.
• Initiated observability transformation: kicked off OpenTelemetry pilot and hosted book club to shift culture.
• Led company-wide GZIP rollout, saved $2M/year and improved P99 load times by up to 50% in PIX and Shopping flows.
• Completed Homepage-to-BDC (server-driven UI) migration, including experimental rollout, caching infra, and provider governance.
• Reduced hotfix rate from 33% → 15% by implementing automated release gating and incident playbooks.
• Rolled out App Deprecation Policy update, migrating 200k+ legacy users off pre-PIX versions in under 60 days.
• Staffed and launched the new Performance Team by reallocating talent post-Orchestration BU absorption.

Feb 2022 – Jun 2023 · 1 yr 4 mos

• Led Nubank’s Global App Experience org, growing the team from 30 to 50+ engineers across Brazil, Mexico, and Colombia. Scope included BDC (Server-Driven UI Platform), NuDS (Design System), entire App Homepage platform & experience, and overall App Performance.
• 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬:
• Responsible for scaling a global product org delivering mobile performance, UI architecture, and developer tooling at Nubank scale.
• Defined strategic direction for Server-Driven platform adoption and front-end (web & mobile) modernization.
• Partnered with VPs, GMs, Design, Product and InfoSec to deliver business-critical app features and infra programs including developer experience, cross-BU integrations, and customer-facing stability.
• Set performance direction for Nubank’s super app, formalizing the app performance program and building the first dedicated team.
• Mentored and sponsored rising technical leaders, re-established cultural and executional clarity post-IPO.
• 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬:
• Hired 20+ in 4 months (12 engineers, 2 EMs, PMs, BAs, AEs); rebuilt team for scale and delivery.
• Delivered Homepage Tabs (+R$125M NPV), enabling 11M+ cross-sell conversions across BUs.
• Scaled BDC (our internal Server-Driven UI platform) to become the canonical mobile development platform—91% organic new-screen adoption across all 20+ Business Units.
• Launched Dark Mode to 100% of BR, MX, CO customers, fully powered by our Design System platform.
• Launched company-wide App Performance Vision and staffed first dedicated performance squad. Drove 18% reduction in p99 homepage latency.
• Shipped NuBolão, Nu's first in-app social feature, to 8.2M customers in 5 months with 6 engineers, growing app traffic by 6x during 2022 FIFA World Cup period and earning Guinness World Record for the Largest number of people playing a Predictor game within a month: +298M predictions and achieving a peak of 305k App opens/minute (highest in Nubank history) without any high-severity incidents.

Mar 2021 – Jan 2022 · 10 mos · New York City Metropolitan Area

• Pay Later

Jul 2019 – Mar 2021 · 1 yr 8 mos · On-site

Dec 2016 – Jul 2019 · 2 yrs 7 mos · On-site

Oct 2016 – Dec 2016 · 2 mos · On-site

Dec 2013 – Oct 2016 · 2 yrs 10 mos · Greater New York City Area · On-site

• Stack: Python, Django, Bottle, Backbone.js, RequireJS, and CoffeeScript. MongoDB and PostgreSQL. Android and iOS native apps. Extensive use of AWS services (EC2, RDS, EMR..) for the whole infrastructure. Luigi, Hadoop, Pig and Redshift for the Data Pipeline.
• Other tools: Jenkins, PyCharm, Fabric and Puppet
• Started as a QA Engineer with the mission of bringing the best Software Testing, Test Automation/Continuous Integration and Agile practices from ThoughtWorks to Voxy. In less than two weeks in the company, started to be involved in calls with our top partners in Brazil facilitating bilingual meetings and requirements gathering sessions for integrations.
• Designed and implemented our CI/CD Pipeline on Jenkins.
• Launched Voxy's Engineering Book Club.
• Proposed and helped to implement Daily Standups using the WalkTheWall format.
• Advocated for more frequent and better-structured Retrospectives as a way to drive our continuous improvement flow
• Implemented the culture of Pair Programming, advocated BDD/TDD and Continuous Delivery.
• Helped to design and develop our REST API for external integrations/SSO.
• Moved from QA to a Full Stack Engineer role while supporting Voxy on a massive transformation with Pivotal Labs in our engineering practices and processes to XP (Extreme Programming) over a period of 9 months.
• Helped to build our engineering team in São Paulo. Spent 3 months in Brazil and hired the Lead Engineer.
• As a Sales Engineer, I have supported more than 30 partners to integrate successfully with Voxy via our REST API. Including in this list, one of the largest web portals in Latin America, Brazil's largest Private University, and largest Private English School.
• Played the DevOps/Backend/Data Engineer role, focusing on solving some of our scalability issues, making our data pipeline more reliable, speeding up our CI test suite, improving our deployment pipeline and production environment monitoring on AWS.

Apr 2012 – Nov 2013 · 1 yr 7 mos · Porto Alegre Area, Brazil

• Worked with manual and automated functional and performance testing for large Ruby on Rails, Java and Android applications.
• Consultancy and software development work for companies from US and Brazil with distributed teams and on-site with the client.
• On my day-to-day job: Extreme Programming, BDD/Specification by Example, Kanban, Continuous Integration/Deployment/Delivery, Contract Tests and a lot of Pair Programming and automated tests always trying to follow the test pyramid guidelines.
• Some Tools: Selenium Webdriver, Cucumber, JMeter, Jenkins, RSpec, UIAutomator, rake-jmeter and honeydew.

Jul 2011 – Apr 2012 · 9 mos

• Java Software Engineer and QA on a project with a software partner in Germany.(SOFTPRO).
• Major project topics: Java, Oracle, Biometric Signatures with Verification (using SOFTPRO APIs), Digital Signature of Electronic Documents (Security, Digital Certificate, Timestamp, Hash...).

Sep 2009 – Jul 2011 · 1 yr 10 mos

• Primary position: SEPG (Software Engineering Process Group) Lead. We were responsible to bring new technologies, methods and tools to the organization.
• Responsible for implementation the processes of the MPS.BR (Brazilian Process Improvement Model, CMMI compatible) Level F and CMMI ML2 at Nexxera Techpeople in Tubarão, SC, Brazil:
• On December 9 2010, Nexxera Techpeople was successfully evaluated in MPS.BR Level F. (http://www.softex.br/mpsbr/_avaliacoes/avaliacao.asp?id=3323)
• On May 27 2011, thanks to our dedicated preparation, Nexxera Techpeople successfully passed in official evaluation CMMI ML2 (SCAMPI Class A). (http://sas.sei.cmu.edu/pars/pars_detail.aspx?a=16355)
• Direct activities to improve Techpeople's Software Development Process focused on MPS.BR (Brazilian Process Improvement Model) Level F and CMMI ML2, including:
• Process Analyst: Modeled and helped to implement the 6 processes of the MPS.BR maturity level F (GPP, GPR, GRE, GQA, GCO and MED);
• Researched and adapted different open-source tools to support the Software Development Process defined.
• Product Manager: Managed/Prioritized the backlog of a Internal Java Webapp focused in automated areas of our process that could not be fully automated just using open source tools.
• J2EE Software Developer: Responsible for developing some features for our Internal Intranet Webapp)
• Trained Project Managers, Quality Assurance (PPQA) and Configuration Manager (CM) for work on the process with open source tools chosen and our Internal apps.
• MPS.BR Level F Appraisal (MA-MPS) Team Member. (11-12 Nov and 8-9 Dec 2010)
• CMMI ML2 Appraisal Team Member. (23-27 May/2011)

Jun 2009 – Feb 2010 · 8 mos

• Worked as a Project Manager in a project to create an standard API to facilitate the development of J2ME Mobile apps. This project was funded by FINEP (Research and Projects Financing, also known as the Brazilian Innovation Agency).
• Responsible for Planning and Project Monitoring and Control;
• Responsible for the Management of Project Infrastructure;
• Responsible for the preparation of technical reports for accountability FINEP;
• Assistant in Project Portfolio Management at Nexxera Techpeople;

Dec 2007 – Jun 2009 · 1 yr 6 mos

• Development and testing with Java SE (importers) and Java EE (web) applications based on frameworks Java Server Faces (JSF) and JBoss Seam with JBoss RichFaces on JBoss Application Server.
• HTML, CSS, Javascript/AJAX, XHTML, XSTL
• Expertise in Apache ANT Build Tool and CVS/SVN
• Persistence with Hibernate / JPA.
• EJB 3.0.
• Databases: Oracle, PostgreSQL, HSQLDB and MySQL.
• Unit (TDD), Integration and Acceptance testing with: JUnit, TestNG, Selenium, DBUnit, Mock Objects, FIT and Fitnesse.
• Performance testing with: JMeter.
• Operating Systems: Linux Ubuntu (Gnome) and Slackware (KDE).

Jun 2011 – Apr 2012 · 10 mos · Tubarão Area, Brazil

• Founding member, Organizer and Moderator of this user group about Coding Dojo for Tubarão (Santa Catarina, Brazil) Region.
• The group meets every two weeks (on Saturday morning) to practice the Coding Dojo and discuss issues such as:
• Programming Languages ​​and Paradigms Programming Language;
• Test-driven development (TDD) and other engineering practices of Extreme Programming (XP);
• Agile;
• Workplace;
• Design Patterns;
• Software Architecture;
• Take a look at:
• #DojoTuba Blog: http://dojotuba.wordpress.com
• #DojoTuba Google Groups: https://groups.google.com/group/dojotuba
• My talks - 2011 (pt-br):
• 1) Minha Carreira em TI: Algumas lições aprendidas (Senai - Junho/2011)
• Link: http://prezi.com/gtaycltthgbr/minha-carreira-em-ti-algumas-licoes-aprendidas/
• 2) Introdução a Testes Automatizados (1º ForkInTuba - Novembro/2011)
• Link: http://www.slideshare.net/thiagoghisi/introduo-a-testes-automatizados
• 3) Coding kata: Refatorando aplicações web legadas sem medo (1º UnisulTechDay - Novembro/2011)
• Link: https://gist.github.com/1395707
• 4) Formatando o código do seu jeito no Eclipse (1º UnisulTechDay - Novembro/2011)
• Link: http://prezi.com/pgdjv8sttxw6/formatando-o-codigo-do-seu-jeito-no-eclipse/

Sep 2008 – Apr 2009 · 7 mos

• My startup with three partners: Israel Fonseca, Jean Baldessar and Rafael Meyer.
• Development and testing Java Web Applications based on frameworks Java Server Faces (JSF) and JBoss Seam with JBoss RichFaces on Tomcat Applications Server.
• HTML, CSS, Javascript/AJAX, XHTML, XSTL
• Apache ANT Build Tool and CVS/SVN
• Persistence with Hibernate / JPA.
• Databases: HSQLDB and MySQL.
• Unit (TDD), Integration and Acceptance testing with: JUnit, TestNG, Selenium, DBUnit, Mock Objects, FIT and Fitnesse.
• Stress testing with: JMeter.
• Operating Systems: Linux Ubuntu (Gnome).
• Our Products developed:
• SGA: Web Application for Management Generic Appraisals (In Brazilian Portuguese SGA is "Sistema Gerenciador de Avaliações").

Jul 2008 – Jun 2009 · 11 mos · Tubarão Area, Brazil

• One year research project through the program "PUIC - Programa Unisul de Iniciação Científica":
• Thiago da Rosa Ghisi. Análise de Redes Sociais Aplicada no Ensino a Distância. 2009. Iniciação Científica. (Graduando em Ciência da Computação) - Universidade do Sul de Santa Catarina. Orientador: Rafael Ávila Faraco. Carga horária: 360 horas

Jul 2007 – Jun 2008 · 11 mos · Tubarão Area, Brazil

• One year research project through the program "PUIC - Programa Unisul de Iniciação Científica":
• Thiago da Rosa Ghisi. Recomendações de Qualidade de Software baseado no modelo CMMi para o Processo da Fábrica de Software Techpeople. 2008. Iniciação Científica. (Graduando em Ciência da Computação) - Universidade do Sul de Santa Catarina. Orientador: Rafael Avila Faraco. Carga horária: 360 horas
• Link para notícia relacionada: http://portal2.unisul.br/content/jornalunisulhoje/home/integradanoticia.cfm?objectid=4049BFCE-3048-6857-883889BC431A07FA&secao=Pesquisa

Jul 2006 – Jan 2008 · 1 yr 6 mos · Capiravi de Baixo, SC, Brazil

• Location: Jorge Lacerda Thermoelectric Complex (Tractebel SA) - Capivari de Baixo/SC.
• Identification and resolution of problems in operating systems, networks and PC hardware.
• Installation, configuration and maintenance of operating systems (Windows and Linux), basic software, LAN networks and PC hardware.
• Automation of Network Tasks.

Mar 2006 – Jun 2006 · 3 mos · Tubarão Area, Brazil