Hi, I'mDiogo Santos
I'm a Software Engineer with expertise on SaaS development, modern web technologies, and large-scale enterprise architecture.
About Me
I'm a passionate software engineer with 4+ years of experience building scalable SaaS platforms and large-scale enterprise projects, delivering high-performance backends with Node.js, Java and cloud databases, alongside responsive cross-device compatible React frontends.
My journey in tech started with a strong foundation in software development, at the university. Since then, I've worked with various companies to build and maintain great products.
When I'm not working, you can likely find me reading about finance and investments, doing sports or playing video games.
Work Experience
Full-stack Developer
Core developer for DeepSkill's SaaS Ed-Tech platform • Designed and implemented high-performance backend services for user analytics • Leveraged optimized data structures and streamlined code • Reduced processing time by 30% • Achieved 99.9% application uptime
Spearheaded end-to-end development • Collaborated with product managers • Delivered 10+ key OKRs from concept to production • Met all business objectives
Frontend Development Excellence • Developed 80+ responsive frontend components from Figma designs • Used React, Next.js, and Tailwind • Ensured cross-device compatibility • Reduced design-to-deployment time by 25%
CI/CD and Testing Improvements • Integrated GitHub CI/CD pipelines with automated tests • Set up custom Cypress and Jest testing environments • Reduced reported bugs by 80%
AI Integration and Leadership • Led AI-driven feature development • Integrated custom models and OpenAI API • Launched 5 innovative Web App functionalities • Increased user retention by 20% • Mentored interns through pair programming and code reviews
Junior Full-stack Developer
Junior developer of DeepSkill's SaaS Ed-Tech platform • Devweloped and maintained back-end services for efficient data retrieval and storage • Assisted in establishing core back-end infrastructure • Enhanced application scalability and reliability
Frontend Development • Built and enhanced user interfaces using modern tech stack: • React and Next.js • TypeScript • Tailwind CSS • Material UI • Delivered responsive and user-friendly designs
System Integration • Integrated external calendar systems • Implemented online conference embeds • Customized and maintained Strapi services (Node.js CMS) • Ensured seamless third-party integrations
Full-stack Engineer
Backend Development • Worked with Java and Spring Boot for backend services • Optimized architecture and data structures • Applied design patterns for improved efficiency • Wrote and optimized Oracle SQL database queries • Utilized AWS cloud services for deployments
Quality Assurance • Resolved critical bugs and performance issues • Ensured application stability in production • Implemented comprehensive unit tests • Enhanced overall code reliability
Frontend Development • Built React-based UI components • Developed RESTful APIs for user data • Supported core backend infrastructure setup • Ensured seamless frontend-backend integration
Computer Science Engineering Student
Core Computer Science • Mastered Object-Oriented Programming principles • Studied fundamental data structures and algorithms • Learned software development lifecycle and best practices
Programming Languages & Technologies • Java - Primary programming language • C - System programming and memory management • SQL - Database design and management • Web Technologies - HTML, CSS, JavaScript basics
Software Engineering Fundamentals • Software architecture and design patterns • Version control systems and collaborative development • Testing methodologies and debugging practices • Problem-solving and analytical thinking
My Skills
Frontend Development
Backend Development
Database Technologies
DevOps & Tools
Personal Projects
E-commerce Frontend
The frontend for my full-stack e-commerce platform built with Next.js, Typescript and React. I use this project as a template every time I need to create a new E-Commerce project for my clients.
E-commerce Backend
The backend for my full-stack e-commerce platform built with Strapi.js, Node.js and Stripe. I use this project as a template every time I need to create a new E-Commerce project for my clients.
Lineage 2 - Game Files
Lineage 2 is a MMORPG game that I've been playing since I'm a kid. I've always wanted to create my own private server, so I decided to do it. I created new features and improvements simultaneously improving my Java skills too.
Telegram Automated Messaging
During the 2021 Crypto boom, the many memecoin founders needed a way to share their memecoin in dozens of telegram groups. I built a telegram bot that would send automated messages to a group of telegram users. I used python and bash to automate this process.
Responsive Landing Page
I've created a responsive landing page for my tile business. I used React, Typescript and Next.js to create this project where I can showcase my tiles and services. It has multiple languages using Next-Intl and it's deployed on Vercel.
AI Insight Dashboard Prototype
The AI Insight Dashboard is a prototype of a dashboard that would help users get insights from their data. Together with AI, we would be able to create a dashboard that would help users get insights by integrating their apps or documents into one place.