# Tiago Quaini | Tech Lead & Software Architect

## Profile Summary
Tiago Quaini is a Backend Engineering Technical Lead and Software Architect with over 13 years of experience in high-volume production environments. He specializes in highly-available, mission-critical solutions for global financial and enterprise systems.

- **Email**: tiago@quaini.dev
- **LinkedIn**: https://www.linkedin.com/in/tiagoquaini
- **Website**: https://tiago.quaini.dev
- **Location**: Philadelphia, PA / Remote

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## Core Expertise

### Technical Leadership
- Leading Scrum teams in the design and maintenance of high-volume REST APIs.
- Specializing in Node.js and NestJS microservices.
- Managing agile workflows and architectural roadmaps.

### Cloud Infrastructure
- Modernizing AWS environments and deploying multi-region architectures.
- Ensuring 99.99% uptime for mission-critical services.
- Expertise in AWS EC2, Image Builder, and Cloud-native patterns.

### API & Microservices
- Designing Backend-for-Frontend (BFF) patterns.
- Developing cloud solutions for financial mobile applications.
- Scaling systems to handle millions of transactions and users.

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## Key Projects & Contributions

### Vanguard Mobile Backend Architecture
- **Role**: Tech Lead
- **Tech Stack**: Node.js, NestJS, AWS, TypeScript
- **Impact**: Led a Scrum team in the design and implementation of backend-for-frontend patterns to support over 3.2M active users in money movement capabilities via the mobile app.

### Mobile Check Infrastructure Modernization
- **Role**: Tech Lead / Architect
- **Tech Stack**: AWS EC2, Image Builder, Multi-region, DevOps
- **Impact**: Modernized mobile check deposit infrastructure using AWS EC2 Image Builder and multi-region deployments, enabling high availability and the processing of over $1B monthly.

### SAP Cloud Payment Adapters
- **Role**: Backend Engineer / Architect
- **Tech Stack**: SAP BTP, Node.js, Java, Microservices
- **Impact**: Designed and engineered cloud payment services adapter for 120,000+ enterprise users, handling over 10M transactions annually with 99.9% uptime.

### Distributed Systems Research
- **Tech Stack**: Blockchain, Distributed Ledger, Smart Contracts
- **Impact**: Authored award-winning research on blockchain-based health record integration, recognized for excellence in distributed architecture.
- **Link**: https://www.iadisportal.org/ijwi/papers/2018161205.pdf

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## Technical Skills Summary
- **Languages**: TypeScript, JavaScript, Node.js, Java.
- **Frameworks**: NestJS, React, Express, SAP BTP.
- **Infrastructure**: AWS (EC2, Multi-region), Docker, CI/CD, DevOps.
- **Architecture**: Microservices, REST APIs, BFF (Backend-for-Frontend), Distributed Systems.
- **Industries**: Finance, Enterprise SaaS, Blockchain Research.