# Allyson David

Allyson David is a remote worker on Himalayas, Senior Software Engineer at Freelance / Self-Employed, based in Brazil.

Source: https://himalayas.app/@allysondavid1999

```text
Full-Stack Software Engineer building SaaS at Brex, VTEX and CI&T; created hospital software with AI diagnosis support and RAG.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Brazil |
| Authorized to work in | Brazil |
| Salary expectations | 50k+ USD |
| Job categories | Full Stack Engineer |
| Skills | Fullstack Development, SaaS architecture, Multi tenant architecture, Role Based Access Control, Subscription Management, Usage Metering, REST APIs, GraphQL, System Integration, E commerce integration, Payment Integration, CRM Integration, ERP Integration, Data Synchronization, Idempotency |
| LinkedIn | https://linkedin.com/in/allyson-david |

## About

```text
At Brex, I shipped React and TypeScript features for the travel and expense system, giving employees one place to request, book and track company travel and spend. I also automated approval and policy checks with Python workflows.

At VTEX, I built catalog, search, checkout and account experiences, along with custom apps and integrations for commerce services. At CI&T, I built a CRM application and secure e-commerce integrations between storefront and back-office systems.

As a freelancer, I delivered a hospital management platform with AI diagnosis support and AI search over hospital records. I also enabled real-time doctor collaboration through surgical video conferencing and video super-resolution.

I built a resort management application and an EdTech e-library with real-time chat, and enabled multiple organizations to share a SaaS platform with independent access, billing and integrations. My work spans full-stack product development across SaaS, e-commerce, fintech and healthcare.
```

## Experience

### Senior Software Engineer

Freelance / Self-Employed. Dec 2024 - Nov 2026

```text
Delivered a hospital management platform with AI diagnosis support and RAG over hospital records, a resort management platform, and an EdTech e-library with real-time chat. Built multi-tenant SaaS with RBAC, billing, and integrations.
```

Skills: Angular, Java, Spring-Boot, PyTorch, RAG, C++, Qt-Framework, WebRTC, Next.js, NestJS, React, Ruby-on-Rails, MERN-Stack, Multi-tenant-architecture, RBAC, Billing, Usage-Metering, E-commerce-integration, Payment-Integration, CRM-Integration, ERP-Integration

### Mid-level Software Engineer

[Brex](https://himalayas.app/companies/brex). Dec 2022 - Nov 2024

```text
Shipped React and TypeScript features for Brex's travel and expense system, automated approvals and policy checks with business-rule workflows, and ensured data consistency with Django and FastAPI REST services.
```

Skills: React, TypeScript, Python, Django, fastAPI, PostgreSQL, OAuth, Go, Event-Processing, Service-To-Service-Communication

### Junior Software Engineer

[VTEX](https://himalayas.app/companies/vtex). Nov 2020 - Nov 2022

```text
Built catalog, category, and search experiences, checkout customizations, and order-management integrations as VTEX IO apps. Enabled marketplace selling with synchronized stock and order data.
```

Skills: React, TypeScript, NodeJS, GraphQL, C#, .NET, VTEX, E-commerce-integration

### Junior Software Engineer

[CI&T](https://himalayas.app/companies/ci-t). Jan 2020 - Oct 2020

```text
Built a CRM application for customer account and contact management, synchronized e-commerce data with back-office systems, and stabilized releases with automated tests and CI.
```

Skills: Angular, Java, Spring-Boot, PostgreSQL, PHP, Laravel, Vue.Js, MySQL, OAuth, Testing-Automation, CI-CD

## Education

### Federal University of Maranhão (UFMA)

Master of Science, Computer Science. 2016 - 2019

```text
Master of Science in Computer Science from the Federal University of Maranhão, completed from May 2016 to December 2019.
```

## Tech stack

- Kubernetes
- MySQL
- PostgreSQL
- MongoDB
- Node.js
- Django
- Laravel
- Spring Boot
- Ruby on Rails
- Next.js
- NestJS
- .NET
- Redis
- Vue.js
- JavaScript
- Python
- Java
- PHP
- C#
- Ruby
- Go
- C++
- PyTorch
- FastAPI
- GraphQL
- TypeScript
- Docker
- WebRTC
- SQL
- OpenAI API
- Retrieval-Augmented Generation (RAG)
- Apache Kafka
- AWS
- REST APIs
- Angular

To contact Allyson, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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