About
TypeScript-first backend engineer with 8+ years building distributed systems and high-traffic microservices. Specialized in Node.js, ETL/event-driven pipelines, cloud architectures, and measurable reliability impact.
Core Skills
Backend & Languages
Node.js, TypeScript, PHP, Go, Python
Cloud Platforms
AWS, Azure, Google Cloud, Kubernetes, Docker
AI & Integration
LangChain, OpenAI API, RAG, Prompt Engineering
Databases
PostgreSQL, MongoDB, Redis, Elasticsearch
Professional Experience
Backend Engineer - Linx
Feb 2022 – Present | Remote (Brazil)
- Owned and evolved omnichannel OMS microservices (freight quotation, inventory, routing logic, custom freight rules) within SCRUM squads
- Refactored freight-quotation domain into dedicated CRUD microservice (13 entities, 40+ endpoints) using Node.js 22+, Express 5, MySQL 8, Redis, Elasticsearch, AWS S3/SQS/SNS
- Designed async data pipelines with SQS workers, SNS notifications, and S3 streaming validators; automated OpenAPI 3.0 documentation
- Performance program: Node clustering + library optimization → avg latency ~600 ms → 194 ms (−68%), p99 3.6 s → 446 ms (−88%), 5xx 4% → 0.1% (−97.5%)
- Cross-team contributor across Go Freight Cost API, PHP Inventory API, and Azure AKS platform with rollout runbooks, rollback planning, and observability improvements
Independent Developer (Self-Employed)
2016 – Present | Remote
- Delivered backend systems and automation projects across distributed systems and data APIs
- Brazilian Companies Data API: Designed cron-scheduled ETL ingestion of official public datasets with PostgreSQL/MySQL + Redis, achieving ~95% fewer repeat queries and sub-second cached responses
- Legal Document Automation: Integrated scraping APIs and ETL-fed RAG pipelines with LangChain/OpenAI, achieving up to ~80% API cost reduction and ~10x faster preparation
- WhatsApp to AI Assistant Gateway: Built event-driven BullMQ/Redis/Auth0/MongoDB architecture; token caching cut auth overhead by ~95%
Backend Developer - Screencorp
Nov 2020 – Feb 2022 | Remote (Sao Paulo, Brazil)
- Led features for a corporate communications/TV CMS platform; owned production triage and delivery
- Extracted push notifications into a dedicated Node.js microservice with queueing for improved stability and throughput
- Implemented WebSocket real-time communication features
Technical Lead (Contract) - Global MKT
Aug 2016 – Sep 2019 | Hybrid
- Led team of 4–6 developers building e-commerce and marketing solutions
- Managed server infrastructure and deployment pipelines
- Achieved ~US$ 56k/year infrastructure cost savings through optimization
Key Projects & Metrics
- Freight CRUD Microservice: −97.5% 5xx errors through distributed tracing and retry mechanisms
- Performance Optimization: −68% avg latency (600ms → 194ms), −88% p99 latency on critical endpoints
- Brazilian API Gateway: 95% cache hit rate with Redis optimization, sub-second responses
- AI Legal Assistant: up to −80% LLM API costs via caching and prompt optimization, with ~10x faster legal preparation
- WhatsApp Integration: −95% auth overhead through token caching, event-driven architecture
- Infrastructure Optimization: $56k annual savings through cost analysis and resource optimization
Education, Certifications & Languages
Education
UniBF - Technology Degree (Technologist) in Systems Analysis and Development (Expected Aug 2027)
Certifications
LPI Linux Essentials (LE-1) - November 2021
Languages
- Portuguese: Native
- English: Full Professional Proficiency
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