Pedro Mafra Email & Phone Number

State Of São Paulo, Brazil

Rio De Janeiro, Brasil

Achievements:▪️ Reduced annual expenses by R$100,000 by migrating the backend solution for platform's transactional events and marketing streams▪️ Facilitated a 100% increase in marketing campaigns by integrating both the backend and frontend with multiple CRM platforms for user events analysis using the Adapter Pattern, AWS EventBridge, Lambdas, SQS▪️ Gained 4,000+ potential future customers by enabling registration and login from users outside Loggi's freight coverage▪️ Architected a microservice to handle 120,000+ daily requests as the new orchestrator for freight and coupon calculations using FastAPI, REST, gRPC, Redis, and Unleash for A/B testing▪️ Fixed a longstanding authorization bug affecting 2,000+ users due to data inconsistencies between the database and AWS Cognito user-poolContext:Loggi is a technology unicorn in the logistics sector, handling over 300,000 packages daily and serving more than 1MM customers.I was part of the Acquisition, Registration, and Activation teams, working on solutions for onboarding, registration, and access flows for apps serving local and national shipments (B2B and B2C). I closely collaborated with the POs to enhance the app's conversion and was involved in architecting, securing, and maintaining microservices and APIs that serve thousands of users.Technologies:- Python / Django / FastAPI- React- Docker- Redis- PostgreSQL- AWS Cognito, Lambdas, EventBridge, SQS, CloudWatch, EKS- Kibana, Grafana, Sentry- REST / GraphQL / gRPC- Tests functional / unitary / integration- ArgoCD- Github Actions- UnleashActivities:- Architected and developed microservices in FastAPI with Hexagonal Architecture and dependency injection- Produced spikes, POCs, and design documents, along with stories and tasks for the sprint initiatives- Created Python scripts to automate processes and resolve customer support tickets- Developed and maintained the frontend for the business account registration flow in Loggi's main app

Rio De Janeiro, Brasil

Achievements:▪️ Reduced login issues by 20% through enhancing error handling for login and password recovery flows integrated to AWS Cognito and Lambda▪️ Increased the invitation speed to new users by 60x from the company's administrative panel by fixing an old bug that was blocking the batch sending of invitations using Excel spreadsheets▪️ Increased CSAT by 15% by implementing the first onboarding modal for the platform using Appcues▪️ Successfully resolved 50+ user tickets reporting issues with registration and access to the platform through the creation of python automation scripts and bug fixesContext:Worked with Loggi's B2B application (Loggi Envios) for package collection, shipping, and management across the entire national territory. I was part of the team responsible for the package collection scheduling service, ensuring stability and implementing new features to the app's core. My main focus was on enhancing and expanding the scheduling usage flow.Technologies:- Python / Django- React / MUI / AWS Amplify- Firebase (Remote Configs)- AWS Cognito, Lambdas, CloudWatch- Docker- PostgreSQL- Kibana, Grafana, Sentry- REST / gRPC- Tests functional / unitary / integration- CircleCI- RundeckActivities:- Developed new APIs in Django- Fixed responsiveness across multiple app routes to ensure functionality on all screen sizes- Enhanced the permission system for business accounts within the app- Created and improved monitoring dashboards using Grafana, alert integration, and service documentation

Bachelor Of Mechanical Engineering, Mechanical Engineering

Thermodynamics monitor (Sep/2019 - Oct/2019) • Contributed to the research and testing of new online platforms for students to carry out.

Professionalization, Full-Stack Web Development, Software Engineering

• Intensive training of +800 hours focused on applications and websites development • Created +25 projects from scratch using Javascript.

Bachelor'S Degree, Computer Engineering