Mario N Júnior - Profile Picture

Mário N Júnior

Software Developer | Problem Solver

I currently work remotely at Go Ponto a Ponto and Four Devs 4 mainly as a back-end developer. Among many experiences, the one I highlight most is the development of a system to process images from four cameras simultaneously and extract people counting, facial and object recognition, and other metrics from a Raspberry Pi. Also, the experience as a tech lead of a project to manage employee schedules integrated with a third-party system. My focus is to build intelligent and secure systems that are fault-tolerant, scalable, and have low latency in the face of access spikes and DDoS attempts.

Work Experience

Go favicon
2019 - Present

Systems Analyst (Back-End) at Go Ponto a Ponto

Working here has been great. Developers are truly treated as devs. I have the opportunity to take responsibility for projects, collaborate across teams, and contribute to solutions throughout the company. The company’s emphasis on technical excellence and trust makes it a great place to grow. The ability to work remotely adds flexibility to an already rewarding environment.

  • Find solutions for interoperability between specific MSSQL Server tables and systems using MySQL via RabbitMQ messaging.
  • Started and actively participate in the image processing project with Raspberry Pi using Python and AI, generating various metrics and reports.
  • Maintainer and developer of HR system in Laravel.
  • Creation of robust, documented, and scalable APIs that support web systems and mobile apps.
  • Tech Stack: Scala, Docker, Linux, NestJS, Digital Ocean, PostgreSQL, Redis, RabbitMQ, CI/CD, MySQL, Laravel, Git Flow, Git Actions, etc...
Gemini favicon
2022 - 2025

Back-End Developer at FourDevs

FourDev represents technological creativity. The work experience has been amazing. The developer’s voice is heard and many fantastic projects have emerged and/or improved from briefings. The team challenges itself to use innovative technologies to meet expected demands. The commitment to continuous delivery and process improvement has created great opportunities for every developer to grow.

  • Pensapovo project that scrapes and queries third-party APIs and provides job and course listings in a single mobile app.
  • Messaging system for mass deletion.
  • AI Chatbot API
  • Microservice that queries and downloads NF-e and NFC-e from SEFAZ WS and makes them available in a database for integration with third-party systems.
  • Tech Stack: FastAPI, Python, NestJS, Typescript, Docker, Redis, Mongo, Prometheus, IA, RabbitMQ.

Education

Bachelor - Information Systems

2015 - 2019

Bachelor - Information Systems

Estácio University

Junior Analyst - Genexus Evolution X3

2016 - 2016

Junior Analyst - Genexus Evolution X3

GeneXus Training

Volunteer Projects

EGeu - Smart Education System

EGeu - Smart Education System

API - Application Programming Interface for the EGeu Education System.

NestJSTypeScriptNode.jsTypeORMPostgreSQLSwaggerScalarDocker
IAM - Identity and Access Management

IAM - Identity and Access Management

Manage user identity and access securely and efficiently based on roles and permissions.

NestJSTypeScriptNode.jsTypeORMPostgreSQLSwaggerScalarDocker
e-CEP - 10Envolv

e-CEP - 10Envolv

Searches for ZIP codes in the local MongoDB database. If not found, fetches from the open API and inserts the result into MongoDB.

FastAPIPythonPyTestMongoDBSwaggerDocker

Technical Skills

Frontend

Frontend

Html
Html
Css
Css
Javascript
Javascript
ReactJS
ReactJS
Backend

Backend

FastAPI
FastAPI
Django
Django
NestJS
NestJS
Laravel
Laravel
Database

Database

MySql
MySql
PostgreSQL
PostgreSQL
MsSql
MsSql
MongoDB
MongoDB
DevOps

DevOps

Linux
Linux
DigitalOcean
DigitalOcean
Docker
Docker
CI/CD
CI/CD

Behavioral Skills

  • Innovation
  • I use creativity together with the ability to meet client needs, connected to cutting-edge technologies.

  • Communication
  • I exchange information clearly, empathetically, and receptively (oral or written) to maintain harmony in the work environment.

  • Proactivity
  • I try to anticipate some demands to present viable solutions.

  • Autonomy
  • I am able to learn what I need to start an open task without waiting for orders, when my scope is clear.

  • Resilience
  • I adapt to deal with adverse situations, pressure, changes, and challenges, even when I do not know how to handle them, overcoming my failures and focusing on work towards objectives.

  • Collaboration
  • I am able to work in a team, sharing knowledge and meeting new people.

  • Adaptability
  • I observe context changes and adapt to different daily situations, both technically and personally.

  • Commitment
  • I try to stay attentive and aligned with deadlines and the goals of the organization and clients.

  • Continuous Improvement
  • I am able to learn and grow, always seeking to improve my skills and knowledge.

  • Problem Solving
  • I act directly, getting my "hands dirty"—or rather, my "hands on the code"—to solve problems and inconvenient situations.