Diogo Cezar - Portfolio

01About Me

Diogo Cezar

Technology and Leadership

From my first steps in development, I found in technology a way to turn ideas into reality and help people. My journey has been guided by curiosity and a constant desire to learn and share knowledge, leading me to specialize in Artificial Intelligence and lead technology teams.

I believe that technology gives people superpowers, and with great power comes great responsibility. This vision inspires me to wake up every day excited to think about how I can use my skills to make a difference. Creating innovative solutions, especially using AI, is one of my main areas of interest and continuous study.

My commitment to technology goes beyond tools and programming languages; it is about building a culture where collaboration and mutual assistance are fundamental pillars. I believe in the importance of happy and engaged teams, and I strive to create environments where autonomy and trust are essential values.

Seeking new opportunities, I am looking for leadership roles in technology that allow me to apply my experience to build high-performance teams, always focusing on innovation and customer satisfaction. My goal is to grow in technology leadership and continue delivering results that make a difference, always guided by honesty, respect, and passion for what I do.

02Education

  • PHD COMPUTER ENGINEERING - CREDITS ONLY

    2020~2021 - UFPR

    I have completed the credits in the subjects of Machine Learning, Seminars, and Topics in HCI.

  • MASTER DEGREE COMPUTER SCIENCE

    2010~2012 - UFPR

    A model for execution of scientific workflows using automatic planning techniques.
    LIAMF - Laboratório de Inteligência Artificial e Métodos Formais.

  • TECHNOLOGY INFORMATION SYSTEM DEVELOPMENT

    2004~2007 - UTFPR

    Adaptative hypermedia approach based on optimisation by any colony.

03Professional

  • V3 Technology

    AUG 2024~PRESENT / HEAD OF TECHNOLOGY

    Drove the evolution of the tech team, creating a collaborative environment with talented professionals. Established new processes and documentation, building a multidisciplinary, engaged team. Led V3's strategic organization, defining goals, priorities, and roadmaps. Promoted a new development process with clear objectives.

    Worked hands-on polishing the product, building new architecture, and implementing a robust infrastructure with significant improvements in security, scalability, maintainability, and operational visibility. Built and led a high-performance team delivering a robust video-telemetry solution with over 3,000 active devices in the field.

    • AWS
    • MariaDB
    • GoLang
    • Docker
    • Kubernetes
    • ReactJS
    • Sentry
    • NATS
    • CI/CD
    • GitOps
    • ArgoCD

  • Typper

    FEB 2023~JUN 2025 / CO-FOUNDER AND ADVISOR

    As Co-founder and Advisor of Typper, one of the top 100 technology startups in Brazil (by F6S), achieved a user base of over 50k, with more than 15k images, 17k texts, and 35k codes generated using AI. Positioned the startup among Brazil's Top 100 AI companies, reaching 50k users and generating 15k+ images, 17k+ texts, and 35k+ code snippets through AI.

    My responsibilities include setting the strategic direction of the company, overseeing product development, managing the team, ensuring financial stability, and building partnerships. I am committed to fostering a culture of innovation and driving the company towards long-term success.

    Typper.io was born from the collective energy of four passionate tech enthusiasts who love technology, entrepreneurship, and artificial intelligence. As one of the founders and CEO, I am proud to say that Typper was an evolution of our previous venture.

    In a remarkably short time, we have achieved incredible milestones, continuously growing and gaining visibility. Our team is dedicated to developing products that simplify the most tedious tasks, making daily routines more efficient and productive.

    • Team Leadership
    • Strategic Planning
    • Process Improvement
    • Culture
    • Career Counseling
    • Financial Analysis
    • Artificial Intelligence
    • Team Management
    • Task Prioritization
    • Strategic Partnerships
    • Personal Development Plan
    • Usability
    • Metabase

  • BANKME

    SEP 2022~MAI 2024 / HEAD OF TECHNOLOGY

    Built a solid and scalable tech structure, defining and supervising key rituals such as dailies, technical refinements, planning, estimates, retrospectives, and weekly product/tech meetings. Standardized development tools and methods focusing on quality and predictability, establishing conventions, commit standards, automated tests, branch organization, and technical documentation.

    Developed a guide for roles, responsibilities, and career paths emphasizing technical skills, deliveries, soft skills, leadership, and strategic impact. Directly contributed to conception, planning, and execution of projects like Bank Credit Certificates (CCB), ERP integrations, Leverage System, Rediscount System, Ledger structure, platform experience improvements, and API integrations.

    Also contributed to technical improvements such as a new authentication module architecture, migrating monolithic to modular architecture, ETL implementations, design system, monitoring, SOLID principles, front-end migration, and infrastructure migration from AWS to GCP. Successfully doubled the velocity of technology teams and fostered a strong tech culture.

    I mentored various areas of Bankme in leadership, organization, processes and OKRs.

    • Team Leadership
    • Strategic Planning
    • AWS
    • MongoDB
    • Process Improvement
    • PostgreSQL
    • Continuous Integration/Continuous Delivery (CI/CD)
    • Team Building
    • AWS Lambda
    • Hiring
    • NestJS
    • Career Counseling
    • Docker
    • AngularJS
    • Information Security
    • npm
    • MySQL
    • GitHub
    • Technology Team Culture
    • RabbitMQ
    • Amazon RDS
    • Express.js
    • Design Patterns
    • Next.js
    • CSS
    • Design Documentation
    • Node.js
    • Artificial Intelligence
    • Git
    • ETL (Extraction, Transformation, Loading)
    • Team Management
    • Amazon EC2
    • Solid Principles
    • Full Stack Development
    • Task Prioritization
    • HTML 5
    • React.js
    • Architecture
    • Google Cloud Platform (GCP)
    • JavaScript
    • Web Crawling
    • Personal Development Plan
    • Amazon Route 53
    • Usability
    • Metabase
    • Datadog

  • BANKME

    MAR 2023~MAI 2023 / HEAD OF PRODUCT

    Took over the leadership of the Product team during a critical phase when our processes were undefined and demand management was chaotic. The team faced a lack of clarity in task prioritization and visibility of deliveries.

    Implemented new processes for the product team to improve roadmap clarity, feature collection, prioritization, and visibility of completed deliveries. Additionally, introduced Personal Development Plans (PDP) for each team member.

    • Team Leadership
    • Strategic Planning
    • MongoDB
    • Process Improvement
    • Team Building
    • Career Counseling
    • GitHub
    • Team Management
    • Design Patterns
    • Git
    • Team Management
    • Full Stack Development
    • Task Prioritization
    • Product Roadmap
    • Node.js
    • Personal Development Plan
    • Usability

  • PROVI

    MAI 2022~SEP 2022 / ENGINEER MANAGER

    Restructured existing processes introducing documentation, estimates, detailed technical tasks, incident investigations, and improved monitoring. Focused on keeping the team happy and engaged, achieving this through 1:1 meetings that allowed identification of the team's strengths and weaknesses, resulting in a more motivated and confident team.

    Contributed to the conception, documentation, and migration to a monorepo. Participated actively in deliveries with the team using MOB Programming technique. Was responsible for the development and implementation of a microservice that centralizes all external integrations, including communications via SMS, email, and WhatsApp, as well as integrations with partners (Billing System).

    • Team Leadership
    • AWS
    • MongoDB
    • Process Improvement
    • PostgreSQL
    • Continuous Integration/Continuous Delivery (CI/CD)
    • Team Building
    • Hiring
    • Career Counseling
    • Docker
    • npm
    • GitHub
    • Technology Team Culture
    • Express.js
    • Design Patterns
    • CSS
    • Node.js
    • Git
    • ETL (Extraction, Transformation, Loading)
    • Team Management
    • Solid Principles
    • Full Stack Development
    • Task Prioritization
    • HTML 5
    • React.js
    • Architecture
    • JavaScript
    • Node.js
    • Personal Development Plan
    • Usability

  • LUIZALABS

    2021~2022 / TECH LEAD

    Led multiple squads in MagaluPay tribe, improving and expanding fintech products. Managed Black Friday readiness with stress tests, infrastructure projection, and cost reduction. Identified infrastructure improvements applying cluster resizing.

    Served as technical reference, supporting solution design, POCs, deployments, and incident resolution. Led technical conception and implementation of MagaluPay Wallet.

    • Team Leadership
    • Strategic Planning
    • MongoDB
    • Process Improvement
    • Continuous Integration/Continuous Delivery (CI/CD)
    • Team Building
    • Career Counseling
    • Information Security
    • npm
    • GitHub
    • Technology Team Culture
    • RabbitMQ
    • Express.js
    • New Relic
    • Design Patterns
    • Next.js
    • CSS
    • Design Documentation
    • Node.js
    • Git
    • Team Management
    • Kong
    • Full Stack Development
    • Task Prioritization
    • HTML 5
    • Architecture
    • C4 Model
    • Google Cloud Platform (GCP)
    • JavaScript
    • Node.js
    • Personal Development Plan
    • Apigee
    • Usability

  • NEON

    2019~2021 / Back End Coordinator

    Technically led a team that created a digital account for microentrepreneurs. After initial delivery, the product split into 10 teams.

    Led planning and execution of MEI Fácil app integration with Neon's banking infrastructure using BFF architecture to orchestrate microservice calls. Structured and implemented services enabling smooth onboarding, resulting in 200k new customers in the first year.

    Later, assumed technical leadership of Activation and Onboarding squads.

    • Team Leadership
    • Bitbucket
    • Strategic Planning
    • Prometheus
    • AWS
    • MongoDB
    • Process Improvement
    • Continuous Integration/Continuous Delivery (CI/CD)
    • Team Building
    • NestJS
    • Career Counseling
    • React Native
    • npm
    • GitHub
    • Technology Team Culture
    • RabbitMQ
    • C#
    • Express.js
    • Design Patterns
    • CSS
    • Node.js
    • Graylog
    • Git
    • Team Management
    • Full Stack Development
    • Task Prioritization
    • HTML 5
    • React.js
    • Architecture
    • Kubernetes
    • JavaScript
    • Node.js
    • Personal Development Plan
    • Usability

  • MEI FÁCIL

    2018~2019 / Tech Lead and Back End Cordinator

    Focused on innovation and real impact simplifying life for Brazilian microentrepreneurs. Co-created MEI Fácil digital account, a market-leading product culminating in integration with Banco Neon.

    The initial concept of the MEI Fácil digital account was crucial in supporting our integration with Banco Neon. We began developing the entire product journey and integrating with external partners (Conductor).

    Was responsible for designing and implementing the backend structures using NodeJS, Express, and NestJS to provide customer data for the digital account. Structured and implemented services enabling smooth onboarding, resulting in 200k new customers in the first year.

    • Team Leadership
    • Strategic Planning
    • AWS
    • MongoDB
    • Process Improvement
    • Continuous Integration/Continuous Delivery (CI/CD)
    • Team Building
    • Hiring
    • NestJS
    • Career Counseling
    • npm
    • GitHub
    • Technology Team Culture
    • Express.js
    • Design Patterns
    • CSS
    • Node.js
    • Git
    • Team Management
    • Full Stack Development
    • Task Prioritization
    • HTML 5
    • React.js
    • Architecture
    • JavaScript
    • Node.js
    • Web Crawling
    • Personal Development Plan
    • Usability

  • UTFPR TEACHER

    2017~2019 / GRADUATION TEACHER

    At UTFPR, taught core courses for the Technology in Systems Analysis and Development and Computer Engineering programs.

    Responsibilities: Preparing and delivering lectures, Creating, administering, and grading exams, Conducting tutoring sessions, Supervising internships, Guiding final projects

    Courses Taught: Web Programming: HTML, CSS, JS, ReactJS, Data Structures: Arrays, Lists, Stacks, Queues, Hash Tables, Trees, Desktop Programming: Visual programming concepts, interface development, component libraries, property and event control, data input/output handling, Integrator Project: Applying knowledge from various courses to develop an integrated computing system, including research methodology and final report presentation, Algorithms: Basics, language evaluation criteria, implementation methods, language evolution, syntax and semantics, data types, control structures, subprograms, arrays, structures, pointers, object-oriented concepts, Introduction to Software Engineering: System, software, and software engineering definitions, social and business context, software product and process concepts, software engineering knowledge areas, development methods, applications, and tools

    • Laravel
    • Student Assessment and Feedback
    • Teaching
    • PHP
    • Curriculum and Instruction Development
    • GitHub
    • Research Methodology and Communication
    • CSS
    • Git
    • Technical Proficiency
    • HTML 5
    • React.js
    • Project Supervision
    • Node.js
    • Usability

    2013~2013 / POSTGRADUATE TEACHER

    For the Postgraduate Java course, taught Java with a focus on web development, covering HTML, CSS, JavaScript, Servlets, and JSP.

    • Student Assessment and Feedback
    • Teaching
    • GitHub
    • Vue.js
    • CSS
    • HTML 5
    • Java
    • JavaScript
    • Usability

    2008~2009 / GRADUATION TEACHER

    Responsibilities: Preparing and delivering lectures, Creating, administering, and grading exams, Conducting tutoring sessions

    Courses Taught: Business Programming - Microsoft .NET with C#, Web Programming - HTML 5, CSS, Javascript, Basic Informatics - Word, Excel, Powerpoint, Access, Database Integrator Project - PostgreSQL

    • PostgreSQL
    • Microsoft Access
    • Teaching
    • GitHub
    • Microsoft PowerPoint
    • C#
    • CSS
    • Microsoft Excel
    • HTML 5
    • JavaScript
    • Microsoft Word
    • Usability

04Hobbies

05Awards

  • 14º APPMARKMIDIA - 2018

    CREATIVITY AWARD

    Second Place - Category: Website / Agency: Boyband / Customer: Tintas Kokar

  • UTFPR - 2007

    Award of the best undergraduate student.