# Erion Criscente

> Senior Software Engineer at Pearson Education do Brasil LTDA, based in Monte Alto, São Paulo, Brazil.

I build web platforms with Django, React, Next.js, and AWS serverless — from serverless microservices in production to the platforms they run on.

- Email: me@erion.dev
- LinkedIn: https://www.linkedin.com/in/erioncriscente/
- Github: https://github.com/ecriscente

## Now

Updated Q3 2026.

- **Working** — Senior Software Engineer at Pearson, building education software.
- **Learning** — Putting my postgraduate ML/AI studies (Faculdade XP Educação / IGTI) to work on practical projects.

## Selected work

### Course completion, more than doubled

**30% → 70%** · Django · AWS · Microservices

I built an engagement microservice for an education platform that helped raise student course completion from 30% to 70%.

### Educational portal and virtual classroom platform

**Serverless in production** · Lambda · DynamoDB · S3 · SQS

I built serverless microservices — Lambda, DynamoDB, S3, SQS — behind a new educational portal and a virtual classroom platform for a large user base.

### Founding engineer on a decentralized identity platform

**Acquired** · Founding engineer · 2021–2023

I helped build a decentralized social-network identity hosting service whose delivery quality led to its acquisition by a major company in the same segment.

## Let's connect

Interested in discussing technology, swapping engineering stories, or asking about something I've built? I'd love to hear from you.

Reach me directly at me@erion.dev, or through the profiles listed above. Contact is welcome for networking and knowledge exchange.

## Frequently asked questions

### What programming languages and frameworks does Erion Criscente specialize in?

Erion Criscente specializes in Python (Django), JavaScript/TypeScript (React, Next.js, Node.js), cloud technologies (AWS Lambda, DynamoDB, S3), containerization (Docker), and holds a postgraduate certificate in Machine Learning and Artificial Intelligence from Faculdade XP Educação (IGTI). He has professional experience building scalable web applications and business platforms.

### What kind of projects has Erion Criscente worked on?

Erion has extensive experience building scalable web applications, including interactive platforms, user engagement systems, and microservices architecture. He has developed serverless applications using AWS Lambda, DynamoDB, and SQS queues in production environments. He specializes in secure API authentication (JWT, OAuth2) and full-stack web applications.

### How can I connect with Erion Criscente professionally?

You can connect with Erion through his LinkedIn profile or via the contact form at erion.dev. He's interested in discussing technology trends, sharing knowledge about web development, cloud architecture, and machine learning. He enjoys connecting with fellow developers and tech professionals globally, communicating in English and Portuguese.

### What is Erion Criscente's experience with cloud technologies and AWS?

Erion has hands-on experience with AWS serverless architecture, including Lambda functions, DynamoDB databases, S3 storage, and SQS message queues. He has built production-scale web applications using these technologies in professional environments, focusing on scalability, cost optimization, and performance. He also implements CI/CD pipelines and infrastructure as code.

### Does Erion Criscente have experience with AI and Machine Learning?

Yes, Erion holds a postgraduate certificate in Machine Learning and Artificial Intelligence from Faculdade XP Educação (IGTI), covering modern AI technologies and their practical applications, including Generative AI, LLM operations, and Advanced Data Engineering. This enables him to integrate AI capabilities into web applications and work with emerging AI technologies.

### What makes Erion Criscente different from other full-stack developers?

Erion combines technical expertise with real business impact - he significantly increased student engagement from 30% to 70% completion rate through microservice development and played key roles in building educational platforms used by large user bases. His focus on performance optimization (Core Web Vitals), security (JWT/OAuth2), and modern development practices (Docker, serverless) ensures production-ready solutions. He also stays current with emerging technologies like Machine Learning and AI.

### Where is Erion Criscente located and does he work remotely?

Erion is based in Monte Alto, São Paulo, Brazil, and has worked on internationally distributed teams. He has experience with remote collaboration and can work across different time zones. He communicates fluently in English and Portuguese.

### What is Erion Criscente's approach to web performance optimization?

Erion follows modern web performance best practices, focusing on Core Web Vitals optimization (LCP, CLS, INP). He implements techniques like image optimization, code splitting, lazy loading, resource preloading, and performance monitoring. His recent work achieved excellent Core Web Vitals scores with LCP of 1.2s and minimal layout shifts, demonstrating expertise in creating fast, user-friendly websites.

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