Languages & Frameworks.
10 items
- JavaScript
- TypeScript
- Node.js
- NestJS
- Express
- React
- React Native
- Next.js
- Angular
- GraphQL
▮ Transmission // São Paulo, Brazil
00Chapter 00 — AboutGabriel
Gabriel
Ferrari
Software Engineer & Mentor
I turn complex systems into products that run in production.
Software Engineer and Mentor with 9+ years of experience building high-impact digital products. Specialized in fullstack development and cloud-native architectures on AWS, with a proven track record of technical leadership on end-to-end projects — from breaking down epics with AI to running them in production.
01Chapter 01 — Experience
Where I've made impact.
✦ Career route
Zellar RH.
Jul 2019 – Jan 2020Software Engineer
- Designed and implemented features for an HR ERP product, with tests using Angular 2+ and Protractor.
RD.
Jan 2020 – Jul 2021Software Engineer
- Built enterprise systems for RD's mobile e-commerce, contributing to a R$29.06bn-revenue platform using React Native, Node.js, REST and AWS.
- Led a team of 4 trainees on the complete redesign of the corporate benefits card's mobile front-end.
Midway.
Jul 2021 – Sep 2022Software Engineer
- Built multiple enterprise applications for Riachuelo's e-commerce (R$7.2bn in revenue) using React.js, Next.js, Node.js, GraphQL, Feature Toggles and AWS.
- Implemented fraud-prevention mechanisms that reduced card-validation attacks by +50%.
Midway.
Feb 2022 – Sep 2024Senior Software Engineer (Promoted)
- Integrated fraud-prevention systems, reducing static-biometry validation attacks by +90% using React Native, Java, Swift and Node.js.
- Led end-to-end development of digital products, driving requirements gathering, implementation and metrics definition.
Encora Inc..
Oct 2024 – Jul 2025Software Engineer
- After a multitenant security flaw, identified the root cause and implemented automated per-endpoint authorization test generation using GitLab CI/CD, Node.js, TestContainers and Docker.
- Cut MR approval time from 24h to 2h and restored delivery autonomy to international teams.
Mevo.
Oct 2025 – Aug 2026Software Engineer
- Designed and built, as the sole engineer, a fullstack system to manage the REMUME lists, serving 100,000–200,000 requests/day. Stack: Next.js, NestJS, PostgreSQL, AWS Lambda and Redis.
- Owned epics end to end as a solo developer — using generative AI to break deliveries down into granular deliverables.
- Migrated the orders endpoint from a legacy ECS architecture to serverless AWS Lambda, reducing infrastructure costs.
✦ Giving back.
- 2023
Dev JR Br.
São Paulo, SP
- 2024
Campinho Digital.
São Paulo, SP
02Chapter 02 — Projects
Things I build.
✦ Published packages I maintain.
✦ Examples and studies, straight from my GitHub.
View all on GitHubclean-node-file-uploader-api-js
183NodeJS server that exposes a file upload API, built with TDD and DDD along with Clean Architecture.
JavaScript#bdd#clean-architecture#clean-codeclean-node-todolist
171Node.Js API built with Clean Architecture and Design Patterns that runs in REST and Graphql at the same time
TypeScript#clean-architecture#clean-code#coverallsclean-react-todolist
161React.Js WEB APP built with Clean Architecture and Design Patterns that consumes a REST API server response
TypeScript#clean-architecture#clean-code#design-patternsshort-link-with-click-aggregator-python
2URL shortener API (FastAPI) backend by Postgres + Redis, with a batch worker for short-code generation and a Celery-based click aggregation pipeline.
Python#clean-architecture#clean-code#dockerFIFA-score-board-clone
1Node.js API built with Fastify, TypeScript and Clean Architecture, to follow football matches live. State is persisted in PostgreSQL (source of truth) and projected into Redis (read model + pub/sub) by an event-driven pipeline.
TypeScript#aws#clean-architecture#javascriptpaste-bin-go-clone
1Functional PasteBin Clone which exposes a REST API for creating and managing pastes stored in S3-compatible object storage. Paste codes are pre-generated and pooled in Redis to enable fast, conflict-free URL assignment. Users authenticate via JWT.
Go#clean-architecture#clean-code#cloneshort-link-python
1URL shortener API (FastAPI) back-end by Postgres and Redis, with a batch worker that pre-generates short codes into a dedicated Redis instance.
Python#docker#pytest#python
03Chapter 03 — Skills
My toolbox.
Mod · 01 Mod · 02 Cloud & DevOps.
8 items
- AWS Lambda
- RDS
- ECR
- DynamoDB
- Docker
- GitLab CI/CD
- TestContainers
- Localstack
Mod · 03 Architecture & Testing.
8 items
- Microservices
- Distributed Systems
- Unit Testing
- Integration Testing
- E2E Testing
- Jest
- Redux
- Feature Toggles
04Chapter 04 — Education
Where I studied.
Cred · 01 Bachelor's in Information Systems.
USPSão Paulo, SP
Duration · 5 yearsCompleted20162021Cred · 02 MBA in FullCycle Architecture.
FBrBrasília, DF
Duration · 2 yearsCompleted20222024
05Chapter 05 — Let's talk
Got a hard problem? Let's build it.
Open to backend, distributed-systems and cloud-scale opportunities.