Head of Engineering
SuperSummary Lift Ventures
Mar 2026 – Present
- Next.js
- Rails
- Flutter
Lead a 17-person engineering org supporting product development across a range of stacks; built the AI and engineering culture and workflows from scratch.
system: portfolio // online
RafaelEiki
I lead engineering teams and still write the code that matters. Eleven years taking products from first sketch to shipped — as a founder, and now leading a 17-person engineering org.
nowHead of Engineering · SuperSummary
- Engineering Leadership
- Former Startup Founder
- HCI Researcher
Selected work
03 entriesSoftware Engineer III
QuintoAndar
Apr 2021 – Dec 2021
- Java
- React
Co-developed the portfolio-houses model that moved the segment from the company's lowest to highest conversion rate and multiplied visit availability.
Co-founder
Vivros
Dec 2017 – Mar 2021
- Rails
- React
- Kotlin
Founded an EdTech startup that produced interactive pop-up books with a companion AR app, reaching NPS 90 with a team of seven.
Companies I worked with
06 marks
Lift Ventures
QuintoAndar
Vivros
Microsoft
Instituto Claro
PlayKids
Independent projects
04 projectsPersonal projects I built independently, outside of client work.
Research
My research is in Human-Computer Interaction and EdTech: how people and technology co-construct meaning, and how to design systems that support it.
Advised by
M. Cecília C. Baranauskas
Full professor at UNICAMP, co-founder of NIED, co-author of the first HCI book in Portuguese, and winner of the ACM SIGDOC Rigo Award and the first SBC-HCI Career Award.
- A framework for socio-enactive educational systems: linking learning, design, and technologyIHC ’19 · ACM
- Reading as a Collaborative Construction: supporting the design of physico-virtual environmentsTISE ’18 · Nuevas Ideas en Informática Educativa
- Criando uma experiência de leitura colaborativa de histórias fictícias físico-virtuais com realidade aumentadaSBIE ’18 · Brazilian Symposium on Computers in Education
- Collaborative reading in the physical-virtual environmentPIBIC · UNICAMP ’19
Awards & honors
a selection
FacebookHackathon Brazil — 1st, 2018
IntelISEF — 4th, Systems Software, 2016- MicrosoftCollege Coding Competition — 2nd
UNICAMPBest Undergraduate Research, 2018- First AscentTop 20 engineers worldwide, 2019
Mentorship
200+ engineers and founders mentored through university, accelerator and mentorship programs.
Also ran programs for junior engineers and young researchers, and judged startup, research and hackathon competitions.