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Vinícius Baptista
PT

CTO · RMF Inteligência Estratégica · São Paulo, Brazil

Vinícius Miranda Baptista

Teams that grow, systems that stay up.

Today I lead engineering, data and AI. From apprentice in 2020 to leading 4 teams at Certacon.

Get in touchSee 4 decisions

At Certacon · 2023–2026

  • 18

    people led across 4 teams

  • 10

    people hired and trained

  • −66%

    external-vendor cost

  • 99.5%

    SLA across 60+ microservices

* Figures for the teams and systems I worked on: as an engineer (2023–2025) and as technology lead (2025–2026). source: LinkedIn (sign-in required) (opens in a new tab)

  1. 2020Apprentice
  2. 2021Front-end
  3. 2022Full-stack
  4. 2023Engineer
  5. 2025Lead
  6. 2026CTO
01Career

Six roles, from 2020 to 2026.

From my first line of code to leading engineering. Where there’s a case study, the link opens it.

  1. 2026currentCTORMF Inteligência EstratégicaLeading engineering, data and AI since June 2026.
  2. 2025Technology LeadCertaconOwned IT strategy and budget for a group of 5+ companies. Whole team certified.Read the case study
  3. 2023Full-Stack EngineerCertaconCut 1 GB file processing to 2–5 minutes and moved operations 100% onto the in-house system.Read the case study
  4. 2022Full-Stack Developer (Mid-level)Timeware.NET, React and React Native for multiple clients on Azure and AWS. Mentored junior developers.
  5. 2021Front-end DeveloperOK EntregaResponsive interfaces and front-end business logic.
  6. 2020Apprentice · Software DevelopmentSESI · SENAIBuilt the prototype of “Cloud Studies”, an education platform, from scratch.

Public code on GitHub since Feb 2020, from SENAI coursework to microservices. (opens in a new tab)

People I’ve worked with

  • Managed me

    “I mentored him as he grew into the Technical Coordinator role, and I can say with complete certainty that he is a rare, committed professional with great leadership potential.”
    Read the original in Portuguese
    “Atuei como seu mentor durante sua evolução para o cargo de Coordenador Técnico, e posso afirmar com total certeza que ele é um profissional raro, comprometido e com grande potencial de liderança.”

    Tiago Kazuo Lino · AI Solutions Architect · 2025.04 · translated from Portuguese

  • Reported to me

    “His leadership combines efficient team management, confident decision-making even under pressure, and a genuine commitment to developing the people around him through constant mentoring.”
    Read the original in Portuguese
    “Sua liderança combina gestão de equipe eficiente, tomada de decisão segura mesmo sob pressão, e um compromisso genuíno com o desenvolvimento de quem está ao seu redor através de mentoria constante.”

    Juan Marini · AI Engineer · 2026.07 · translated from Portuguese

  • Teammate

    “An incredible leadership profile, always knowing the next step. Impressive teaching skills and full command of the technologies.”
    Read the original in Portuguese
    “Incrível perfil de liderança, sabendo sempre qual o próximo passo. Didática impressionante, mostrando pleno domínio sobre as tecnologias.”

    Murilo Ribeiro · Software Engineer · 2024.05 · translated from Portuguese

Read the recommendations on LinkedIn (sign-in required) (opens in a new tab)
02Work

Four decisions, from problem to outcome.

Each case study shows the problem, the decision and the outcome, with its source listed. Three are from Certacon (2023–2026); one is from a FIAP project.

60+microservices in production. Each cell in the grid is one service.

  • −66%

    external-vendor spend, cut by switching to in-house automation

  • up to 80%

    of business processes automated

  • −20%

    Azure infrastructure cost

* Certacon figures, 2023–2026. source: LinkedIn (sign-in required) (opens in a new tab)

Decisions

  1. 2025–2026A 100% certified teamCertaconFour teams at different levels became a 100% certified team, with 10 people hired and trained.
  2. 2023–20261 GB in 2 to 5 minutesCertaconIntake and processing centralized on a platform of 60+ microservices with a 99.5% SLA.
  3. 2023From 10 seconds to under 20 millisecondsCertaconRedis caching in a Python app: queries roughly 500× faster.
  4. 2026AURA Care-ChainFIAP · Enterprise Challenge 2026A voice-first assistant for older adults with Parkinson’s: three apps on a single API.

Also built

  • P_01

    Booking marketplace with a partner dashboard

    I led engineering for a live marketplace: customers search, compare and book; partner companies manage their listings and bookings from their own dashboard. Row-level security on every table and phased releases behind feature flags.

    • Next.js
    • NestJS
    • Postgres
    • Docker

  • P_02

    A SaaS product that replaced a legacy desktop system

    I rewrote a desktop management system from scratch. I chose a modular monolith because the workflow needs transactional consistency, and isolated each customer’s data at two layers in the database. I migrated all historical data with no loss, backed by daily backups and tested restores.

    • TypeScript
    • Postgres
    • Docker
    • CI

  • P_03

    On-premises BI for a manufacturer’s ERP

    Working solo, I built an end-to-end BI platform on top of the ERP database the company already used, with a Windows installer, licensing and versioned releases. Decisions are documented in architecture decision records (ADRs).

    • .NET 8
    • Clean Architecture
    • Next.js
    • SQL Server

  • P_04

    HR management platform

    I was the sole architect and developer of a platform covering the whole employee lifecycle, from hiring to offboarding. Database-level security tested for every role, sensitive data masked, and AI with a clear limit: it only extracts and summarizes; people make the decisions.

    • React
    • Postgres
    • pgTAP
    • Playwright

  • P_05

    Field-sales quoting app

    An internal app for a sales team: it works offline, produces PDF proposals and enforces access control verified by tests against the database. The pricing rules stay with the client.

    • React
    • Supabase
    • PWA

  • P_06

    A design system for two products

    I merged two front ends into one design system: tokens, 40+ accessible React components (each tested with keyboard and axe) and transactional emails that only apply the brand color when it passes a contrast check.

    • React
    • Tokens
    • axe
    • Vitest

* The code is private, so I leave out client names, business rules and internal numbers and describe only the technical decisions.

03Leadership

How I lead engineering.

Five principles I use to build teams, grow people and make decisions. They’re opinions, each with an example of where I’ve applied it.

  1. #N-01

    Direction before output.

    Clear architecture and business alignment pay off more than sheer output.

    In practiceOn Certacon’s platform of 60+ microservices with a 99.5% SLA: Clean Architecture and SOLID across every service. source: LinkedIn (sign-in required) (opens in a new tab)

  2. #N-02

    Traceability over magic.

    Every number, decision and score has to show where it came from.

    In practiceIn AURA Care-Chain (a FIAP project), every risk score ships with its factors and weights explained. source (opens in a new tab)

  3. #N-03

    AI suggests, a human signs off.

    AI gets adopted with clear criteria and a named person accountable for the outcome.

    In practiceAt Certacon, I set up AI committees. source: LinkedIn (sign-in required) (opens in a new tab)

  4. #N-04

    A leader can’t be the bottleneck.

    If every decision goes through me, the team stalls. My job is to grow people who can make the call.

    In practiceA leveled career ladder, individual development plans and mentoring. I hired and trained 10 people. source: LinkedIn (sign-in required) (opens in a new tab)

  5. #N-05

    AI agents work under a contract.

    I treat AI agents like a team: every repository spells out what must not change, what “done” means and who reviews the work.

    In practiceEvery plan gets an independent review, nobody approves their own work, and tests run before every merge.

04Stage & community

Six events, 550+ people in the audience.

Careers, technology, AI and purpose, for students, young apprentices, Rotarians and professionals.

Where I’ve spoken

  1. 2026.05Casa Dom MacárioCareer, technology, courage and AI · Speaker · Projeto RUMO · 150 people
  2. 2026.05Estácio · Projeto RUMO · Rotary PerdizesTechnology and careers · Moderator · 100 students
  3. 2026.03ASIS Chapter SP Brasil · Google Cloud, São PauloPurpose and accountability at work · Speaker · corporate event
  4. no published dateRotary Butantã · evento “Perfume de Mulher”The essence of Rotary · Speaker · 300+ people
  5. no published dateEtec Guaracy SilveiraTechnology, AI and software development · Speaker · Projeto RUMO · 5 classes
  6. no published dateCAMP Pinheiros · Projeto RUMOTechnology with purpose · Speaker · young apprentices

Speaker kit

Name, bio and photo ready for your event program. Feel free to copy and shorten.

Formats
talks · panel moderation
Photo (640 × 800 px)
Invite me to speak

Short bio

Vinícius Miranda Baptista is CTO at RMF Inteligência Estratégica. He started in 2020 as an apprentice through SESI/SENAI, Brazil’s industry-run training and education network, and speaks about tech careers, leading teams and using AI with good judgment.

Medium bio

Vinícius Miranda Baptista is CTO at RMF Inteligência Estratégica in São Paulo, Brazil. He started in 2020 as an apprentice through SESI/SENAI, Brazil’s industry-run training and education network, and rose to Technology Lead at Certacon, leading 18 people across four teams. He serves as Technology Director for the Rotary Foundation in District 4563, gives career talks through Projeto RUMO and studies Information Systems at FIAP, where his team took first place in a NEXT 2025 challenge.

05Credentials & writing

Everything here has a source.

Each item links to where it was published.

Award

1st place · NEXT 2025 challenge

First place, as part of a five-person team, in the Delfia Tech | Oracle Go Digital Challenge at FIAP’s NEXT 2025. The brief: an accessible management system for small businesses, covering inventory, logistics and operations.

FIAP · official list (opens in a new tab)

Certifications & courses

Show more (6)

Technical articles, 2022–2023 (Medium)

  1. Python: Using Redis with Docker2023.10 (opens in a new tab)
  2. S.O.L.I.D Principles2023.08 (opens in a new tab)
  3. TDD With .NET C# — Part 12023.03 (opens in a new tab)
All articles on Medium (opens in a new tab)
06Contact

Three ways to get in touch.

Each option tells you what to include. I reply personally.

I take speaking invitations on careers and technology, and I answer questions from people starting out in tech.

Recruiters and press, via LinkedIn (opens in a new tab)

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