Lucas Queiroz

Lucas Queiroz

Backend Developer

Software Engineer with over 6 years of experience on developing backend solutions, integrating with third-party APIs and building internal and external RESTful APIs.


Software Engineer

Pagefreezer, Inc.
July 2021 - Present
Job Description

At Pagefreezer, I develop, design and maintain services to enable social media archiving, connecting with social media APIs.


Python, Celery, PostgreSQL, Cassandra, Docker, RabbitMQ.

Software Engineer

Argyle Systems, Inc.
October 2020 - July 2021
Job Description

Argyle aims to help other companies access employment data.
My responsibilities included building an internal system to help the HR team with automated services, as well as participating in the API team, adding new features and updating existing ones.


Python, Django, MySQL, PostgreSQL, Docker, Google Cloud.

Software Engineer II

September 2019 - October 2020
Job Description

At Creditas, I was part of the communications team, responsible to develop and maintain a platform to help other teams reach our customers through phone calls, e-mails, SMS, Push Notifications and WhatsApp messages, through an API used by other teams at Creditas.
To make this possible, the team integrates with third-party solutions, including SendGrid, Twilio and others.


Python, Flask, SQLAlchemy, Kotlin, Sprint Boot, PostgreSQL, Docker, AWS.

Software Engineer

Wirecard Brasil
June 2017 - May 2019
Job Description

While working at Wirecard Brasil, I was part of the payouts team, developing and maintaining bank account transfers, and developing the bill payments system, with over R$ 1 million in paid bills in the first 3 months, while in the beta phase.
The team used a micro-services architecture to connect with the user interface, allowing clients to withdraw money and pay bills using their Wirecard balance.


Java, Kotlin, Sprint Boot, Ruby, Rails, MySQL, RabbitMQ, Docker, AWS.


MBA in Information Security

March 2023 - March 2024

1-year MBA focused on Information Security. Cybersecurity, Endpoint Security, Networking Essentials, Network Defense, Cyber Threat Management, CyberOps, Network Security, Cloud Security, IoT Security, Computer Security Incident Response Teams, Privacy and Data Protection, Data Mapping and Privacy Governance.

Associate's Degree in System Analysis and Development

January 2017 - December 2018

This 2-year Associate's Degree has its emphasis placed on practical application of techniques toward the development of business applications.
Through this course, I learnt how to design, develop and maintain softwares and evaluate and design databases, as well as the development best practices.
At the end of the program, I developed along with my team a Health Tracking application, which included developing a full-stack application, designing and implementing a database and deployment.


Java, Sprint Boot, Ruby, Rails, MySQL, Heroku.


Using Fuel for HTTP Requests

Creditas Webinar
November 2020

Fuel is a HTTP request library for Kotlin. In this talk, I explained how to implement and use this library inside a Spring project, receiving the results as objects.

Feature Flags and controlled releases

TDC São Paulo
July 2018

How to be agile and implement continuous delivery with quality and security?
In this talk, me and Eduardo Colabardini present how to enable and disable features, products and pieces of code using feature flags. We also show the best practices and challenges we faced at Wirecard Brasil, using an open-source tool called IfMan, developed during a Hackday.