Lucas Queiroz

Lucas Queiroz

Backend Developer

Experienced Software Engineer proficient in enterprise-level social media archiving, internal and external API development, customer messaging solutions, and robust financial and payment systems. Broad knowledge of Feature Flags, RESTful APIs, and webhook implementations.


Software Engineer

Pagefreezer, Inc.
July 2021 - Present
Job Description

- Development and maintenance of social media archiving systems, integrating with third-party APIs and webhook processing
- Design and implementation of enterprise social media archiving systems, processing and storage of data
- Maintenance of systems to alert customers through e-mail when specific words and keywords were detected


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

Software Engineer

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

- Development of HR tools for internal usage
- Maintenance and development along with the API team, adding new features and improving performance-related issues


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

Software Engineer II

September 2019 - October 2020
Job Description

- Design and implementation of NPS system from scratch, automating a task that was run manually by other teams
- Development and maintenance of customer communications, integrating with third-party APIs to send e-mails, SMS and WhatsApp messages, connecting with Twilio, SendGrid, Zapier and more
- Working along with external systems to receive and process phone calls with interactive voice response


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

Software Engineer

Wirecard Brasil
June 2017 - May 2019
Job Description

- Responsible to maintain and develop new features on micro-services, mainly for transferring money from the virtual account to the customer's bank account
- Design, implementation and maintenance of a widely used system of bill payments, allowing customers to use their virtual balance to pay bills, transactioning over R$ 1 million in the first 3 months
- Work on the open-source feature flag system IfMan, used in the company


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


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 improved my knowledge on designing, developing and maintaining softwares and evaluating and modelling databases, as well as the development best practices.
At the end of the program, I developed along with a 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.