Rafael Oliveira
I build high-performance dashboards and AI-powered features for SaaS products
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About Rafael
Fullstack Product Engineer with 10+ years building high-performance dashboards, real-time systems, and AI-powered features for SaaS platforms. Specialized in Angular and Node.js, with a strong focus on performance optimization, UX, and turning complex data into actionable products. Proven track record delivering enterprise systems across healthcare, media, and engineering sectors, working remotely with international teams.
Education
Bachelor's Degree in Computer Science
UNIFESO - 2014 - 2018
Experience
+10 Years
Projects
Medisigh CRM & BI
Medisigh LTDA - 2026
End-to-end CRM and Business Intelligence platform built from scratch to streamline clinic operations, recover lost leads, and surface actionable revenue metrics — driving profit growth of up to 50%.
vProMedia
vCreative - 2023
Multimedia Radio and TV Managing system, focused on spot creation, scripiting, and organization for several US-based Radio Companies.
Medisigh CRM & BI
Medisigh LTDA - 2026
End-to-end CRM and Business Intelligence platform built from scratch to streamline clinic operations, recover lost leads, and surface actionable revenue metrics — driving profit growth of up to 50%.
vProMedia
vCreative - 2023
Multimedia Radio and TV Managing system, focused on spot creation, scripiting, and organization for several US-based Radio Companies.
Design+
Project Mark - 2022
Canva-like collaborative tool to craft proposals, including images and exportation to PDF. An innovative design platform that empowers creative teams with advanced collaboration features.
Patient Evolution
Medisigh LTDA - 2025
AI-powered feature integrated into Medisigh, enabling real-time audio transcription of patient-doctor conversations and automatic extraction of clinical data such as allergies, complaints, and objectives.
Medisigh
Medisigh LTDA - 2020
Multifunction healthcare managing system, targeting plastic surgeons and other asthetic professionals. Includes patient, document, appointment handling, as well as advanced attendance systems that integrate with modern AI technologies.
SojaVR Experience
Imago 360 - 2019
Immersive VR experience built in Unity and C# for agricultural education, letting users explore soybean farming through interactive simulations and real-time data visualization.
AirTouch
UNIFESO (College) - 2018
Software + Hardware haptics kit, developed combining Arduino with Unity Engine to deliver interactive experiences with gaming and computer applications overall
Social Maps
(College Project) - 2017
Interactive Web Application using Google Maps API, Facebook Graph API, Data Scrapping and other technologies to display events and interesting to-dos in a map interface.
Timeline
2026
Developed CRM & BI Platform for Medisigh
Medisigh • 2026
Architected and delivered a full CRM and Business Intelligence suite from the ground up, purpose-built to address critical pain points in clinic day-to-day operations and management workflows. The CRM streamlined patient pipelines, enabling teams to identify and re-engage patients who dropped off mid-way through surgical hiring processes. The BI layer surfaced real-time metrics across revenue, conversion, and retention — providing leadership with data-driven insights that contributed to profit growth of up to 50%.
2025
Developed Patient Evolution at Medisigh
Medisigh • February 2025
Built Patient Evolution. Integrated with OpenAI API to introduce advanced AI-powered healthcare features. Enabled real-time audio transcription of patient-doctor conversations and automatic extraction of relevant details (allergies, complaints, objectives). Marked a major milestone in applying AI for transcription and semantic identification in healthcare applications.
2023
Founded Ninestacks project
Ninestacks • 2023 - current
Founded Ninestacks, a Duolingo-like app designed to teach programming through gamified exercises. Built the system foundation and managed branding.
2022
Started at vCreative as Software Engineer
vCreative • 2022 - 2025
Contributed to the development of media and advertising workflow solutions. Worked on improving system performance and integrating new features.
Worked on DesignPlus at Project Mark
Project Mark • May 2022
Worked on DesignPlus, an interactive Canva-like web app with real-time collaboration on PDFs, allowing multiple users to edit simultaneously. First exposure to Redux-based approaches and component stores. Considered a major milestone in expanding frontend expertise and handling complex collaborative design systems.
Joined Project Mark as Full-Stack Developer
Project Mark • 2022
Joined Project Mark, my first US-based company (San Francisco Bay Area), working in the AEC (Architecture, Engineering & Construction) / Civil Construction industry. Contributed as a Full-Stack Developer across multiple projects. Frontend focused on React, Vue.js, Vuex, and Redux. Backend experience with Node.js and TypeORM.
2021
Started at Radix as Software Engineer
Radix • 2021 - 2022
Joined Radix to work on enterprise systems and software development. Focused on scalable backend solutions and modern frontend stacks.
2020
Started in Medisigh project
Medisigh • 2020 - current
Created the brand and initial system. Led frontend development, implemented Scrum, and contributed to product decisions balancing client expectations and deliverables.
Started Digicriativa collaboration
Digicriativa •
Worked on digital solutions and consulting projects for local clients. Contributed to web development and UI design initiatives.
2019
Created Joe Immortal (platformer game)
Personal Project •
Developed Joe Immortal, a 2D platformer built in Unity. Focused on level design, platforming mechanics, combat systems, and character progression.
Started Soja VR project
Tecnomyl • 2019
Developed Soja VR, a Unity VR simulation for agronomy training where users spray weeds in a soy field. Showcased at an agronomics convention in 2020.
2018
Graduated in Computer Science
UNIFESO • 2018
Graduated with a Bachelor's Degree in Computer Science. Presented thesis project demonstrating full-stack development and modern web technologies.
Created Animal Protection Report App (AmarPet)
Personal Project • 2018
Built AmarPet, an MVP application to raise awareness about animal mistreatment. Focused on mobile UX and backend integration.
Created AirTouch project
UNIFESO • 2018
Developed AirTouch, a hardware + software haptic device for hand-movement interactions using Arduino sensors and Unity desktop application.
Started freelancing career
Freelancer • 2018 - Current
Delivered web and mobile applications for various clients. Specialized in Angular, React, and Node.js solutions with focus on performance and UX.
2017
Left internship at Alterdata Software
Alterdata Software • 2017
Concluded internship after 1 year of hands-on experience with professional development practices.
Developed SocialMaps project
UNIFESO • 2017
Created SocialMaps, integrating Google Maps API and Facebook Graph API to show nearby events on an interactive map.
2016
Started Orbtask project
(Personal Project) • 2016
Designed and developed Orbtask, a task management and productivity tool concept with clean UX, modular architecture, and experiments in real-time features.
Created first game: Pac-Man clone
Personal Project • 2016
Built a Pac-Man clone in C++ using GLUT (OpenGL). Learned about game loops, graphics rendering, and memory management.
Started internship at Mark Software
Alterdata Software • 2016
Joined as an intern developer, working on software development and internal systems while studying Computer Science.
2014
Started Computer Science degree at UNIFESO
UNIFESO • 2014
Began Computer Science studies. Built strong foundations in programming, algorithms, and software engineering principles.
How I Can Help You
Clear, high-impact services designed to solve real product and engineering problems — fast.
Landing Page
Need a professional landing page for your product, startup, or campaign?
I design and build fast, conversion-focused landing pages that make great first impressions — delivered quickly.
- Custom design & development
- Mobile-responsive & fast-loading
- SEO-ready structure
Starting at $100
Get started
Get startedFix My Slow App
Is your app slow, laggy, or struggling under real usage?
I identify performance bottlenecks and optimize your application for speed, responsiveness, and scalability — often within days.
- Angular change detection optimization
- API & data flow improvements
- Rendering & UI performance fixes
Starting at $200Get started
Get startedAdd AI to Your Product
Turn your product into an AI-powered experience.
I integrate practical AI features that improve usability, automation, and user engagement — without overengineering.
- AI chat & assistants
- Transcription + smart data extraction
- Workflow automation with AI
Starting at $300Get started
Get startedReal-Time Dashboards
Build powerful dashboards that turn data into decisions.
I create fast, scalable, real-time interfaces for monitoring, analytics, and internal tools.
- Live data updates (WebSockets)
- Admin panels & analytics tools
- Data-heavy UI systems
Starting at $800Get started
Get startedBuild Your MVP Fast
Have an idea? Let's turn it into a working product — quickly.
I build production-ready MVPs focused on speed, usability, and real-world validation.
- Fullstack development (Angular + Node.js)
- Scalable architecture from day one
- Clean UX focused on user adoption
Starting at $1,000Get started
Get startedModernize Your System
Stuck with messy or outdated code?
I refactor and modernize existing systems to improve performance, maintainability, and scalability.
- Codebase cleanup & restructuring
- Tech debt reduction
- Framework upgrades (Angular, Node)
Starting at $400Get started
Get started