Matheus Mansour El Batti
Verified Expert in Engineering
Full-stack Developer
São Paulo - State of São Paulo, Brazil
Toptal member since May 20, 2022
Matheus is a software developer and industrial engineer who has been coding since he was nine. After completing his degree in engineering, he spent over four years building software for established businesses and helped scale a billion-dollar enterprise from scratch. Matheus is looking for challenging projects in attractive domains that will allow him to expand his technical and business knowledge and deliver at least five times the value to the customer who hires him.
Portfolio
Experience
- Python 3 - 7 years
- SQL - 5 years
- Docker - 3 years
- Data Structures - 3 years
- Django - 2 years
- Microservices Architecture - 2 years
- Kubernetes - 2 years
- Google Cloud Platform (GCP) - 1 year
Availability
Preferred Environment
Windows, Visual Studio Code (VS Code), Python 3, MySQL, Google Cloud Platform (GCP), Linux, Python, Software Architecture, Full-stack, Amazon Web Services (AWS)
The most amazing...
...experience I've had was helping scale a social commerce platform from scratch to number two in Google Play Brazil within three months.
Work Experience
Co-founder
Pix Global
- Engineered all parts of an app that allows Brazilian tourists to pay with their favorite payment system in their local currency in Argentina, where inflation and multiple exchange rates made our products very attractive.
- Engineered 100% of the React Native application, POS integration, and currency conversion system, with immediate payment conciliation for business owners.
- Helped with 50% of the marketing and sales efforts, traveling to the country for the roadshow, printing and designing stickers and flyers, etc.
Software Engineer
Bazaarvoice
- Delivered the migration from a monolith-based architecture to the first three microservices of the company's campaign management system, setting most of the development and infrastructure standards.
- Maintained a large legacy Django codebase by quickly investigating and solving bugs reported by users.
- Deployed, scaled, and built the first eight apps on a low-code front-end platform. The goal was to build a new set of internal tools for the company, previously based on the monolith's Django admin.
- Implemented a database migration service system, including migrating an eight-terabyte Amazon RDS source instance with around 8,000 tables to build a company-wide analytics database. This saved the company $100,000 on yearly service subscriptions.
Software Engineer
Facily
- Built many foundational back-end microservices and functions that helped grow delivered orders by 25x, reaching 500,000 delivered orders per day.
- Led the implementation of an integration service that would listen to the Oracle warehouse management system's order movements and mirror them with messaging technologies, such as Kafka and Pub/Sub, to legacy systems.
- Spearheaded the implementation of infrastructure as code for more than 100 company-wide resources using Terraform.
- Guided the implementation of an authentication system, Keycloak, and role-based access architecture for the entire company, targeting 800+ employees.
Intern Developer
- Developed a pilot project management software with Google App Scripts that allowed managers to keep track of time spent by employees across different projects within the new business sales division.
- Designed the new business sales lead referral system in Latin America using Apex to automate Salesforce communication with more than 100 lead prospectors monthly, which allowed system scaling.
- Used causal inference techniques to identify performance bottleneck behaviors in the sales executives integrating the new business sales division.
Project Lead Developer
Scheid
- Developed the front and back end of an AI-powered web application that enables realtors to get insights about probable property swaps. The application has generated hundreds of successful matches.
- Built the roadmap in collaboration with the real estate firm owner and implemented all technical features.
- Supported and trained dozens of realtors to use the newly-implemented system.
Summer Intern Developer
Banco Itaú
- Implemented a learning algorithm to find possible mistakes for self-reports on business complexity story points from bank departments.
- Optimized the batch script with dynamic programming, then reduced the running time by about 85%.
- Deployed the batch script to run automatically in a scheduler.
Experience
Scheid Permutas
Global PIX
Tech stack: React Native, WebSockets.
Education
Engineer's Degree in Industrial Engineering
Polytechnic School of the University of São Paulo - Sao Paulo, Brazil
Bachelor of Science Degree in Physics
University of Helsinki - Helsinki, Finland
Certifications
TOEFL iBT—Test of English as a Foreign Language (115/120)
ETS | Educational Testing Services
GRE—Graduate Record Examinations (339/340)
ETS | Educational Testing Services
Skills
Libraries/APIs
Python API, API Development, React, Node.js, Asyncio, SQLAlchemy, Django ORM, REST APIs, Python Asyncio
Tools
Terraform, Retool, NPM, Slack, Prisma, CAD, Celery, Helm, Google OR-Tools
Languages
Python 3, SQL, Python, TypeScript, Java, Go, JavaScript, Swift, Apex, HTML, CSS
Frameworks
Django, Angular, Spring Boot, Django REST Framework, Swagger, NestJS, OAuth 2, Next.js, Bootstrap, React Native
Paradigms
Microservices Architecture, Unit Testing, Asynchronous Programming, Database Design, Testing, Microservices, Agile Project Management, Object-relational Mapping (ORM), DevOps, Test-driven Development (TDD), Automated Testing, Continuous Integration (CI)
Platforms
Amazon Web Services (AWS), Windows, Visual Studio Code (VS Code), Google Cloud Platform (GCP), Docker, Apache Kafka, Kubernetes, AWS Lambda, iOS, Heroku, Linux, Databricks, Salesforce, Blockchain
Storage
PostgreSQL, MySQL, Redis
Industry Expertise
Cybersecurity
Other
Physics, Mathematics, Pub/Sub, APIs, Full-stack, Back-end Development, Back-end, FastAPI, Full-stack Development, Authentication, Security, Software Development, Agile Sprints, Logistics, Optimization, Numerical Methods, Calculus, Linear Algebra, Data Structures, Algorithms, Engineering, Computer Science, Statistics, Machine Learning, Software Architecture, API Documentation, Amazon API Gateway, CI/CD Pipelines, Containerization, Technical Leadership, RESTful Services, OAuth, Serverless, Payment Processing, Payment Gateways, Point of Sale, Thermodynamics, Fluid Dynamics, English, WebSockets, Fintech, TypeORM, CTO, Solana, Web Scraping, Linear Optimization, Operations Research
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