Lucas T.

Lucas T.

São Paulo, Brazil
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About Me

Lucas has 8+ years of experience developing performant, concise back-end applications and usable, minimalist front-end solutions for clients. He specializes in Python, Java, and React/JavaScript to build back-end business logic, design services, and data layers of applications. Lucas is a strong advocate of mentoring young engineers, sharing best practices, and promoting the best technical solutions on client projects.

Backend

Database

DevOps

Other

Work history

UpStack
UpStack
Senior Full-stack Engineer
2018 - Present (7 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Karat
Karat
Interview Engineer
2021 - Present (4 years)
Remote
  • Conducting technical interviews, mentoring 900+ interview engineers, and training new engineers.

  • Revising interviews conducted by other engineers as part of the Quality Control’s Mentor Team.

  • Conducted 500+ technical interviews.

Full Stack DevelopmentInterviewing Mentorship Technical Training Quality Control
Avanoo
Avanoo
Software Engineering Manager | Director Of Engineering
2018 - 2022 (4 years)
Remote
  • Led the entire software engineering team, including Platform, Infrastructure, and Data Science.

  • Led the migration of main platform features to a new front-end architecture using React/TypeScript.

  • Created a data engineering framework for future Data Science initiatives.

  • Developed the company's IaC architecture using Terraform, optimized the front-end build pipeline, and built the platform's CI/CD workflow.

  • Built a serverless architecture using AWS services (Lambda, SQS, SNS) and the Serverless framework.

  • Led the back-end development using Ruby on Rails, MySQL, and Elasticsearch to maintain the platform and to create admin-focused data visualization features.

React TypescriptLeadershipData ScienceGoMicroservicesInfrastructure as Code (IaC) TerraformCI/CD AWS ServerlessAWSAWS SNSAWS Lambda AWS SQSRuby on RailsMySQLElasticsearch Data VisualizationBack-end Development
Freelance
Freelance
Senior Full-stack Engineer
2017 - 2018 (1 year)
Remote
  • Augmented and tuned a new Data Science solution to assist a large agricultural producer with irrigation planning processes.

  • Built a robust reporting and monitoring infrastructure using Machine Learning algorithms, processing historical, geographic, and meteorological data for the system.

  • Developed web and mobile dashboard platforms to visualize the results of the irrigation planning system.

Petrobras
Petrobras
Full-stack Engineer
2012 - 2017 (5 years)
Rio de Janeiro, Brazil
  • Steered the architecture system for a financial dashboard that integrated with 20+ internal and external applications.

  • Provided input and support for the development of an application to automate the estimation of new technology contracts (the solution crossed information from previous bidding processes with external sources of information to generate new estimations).

  • Developed a next-gen application to manage the operational costs of offshore and onshore production platforms, combining features of the two existing solutions for efficiency.

Cetip
Cetip
Software Engineer
2009 - 2012 (3 years)
São Paulo, Brazil
  • Improved the performance, scalability, and reliability of a new version of the swap and currency forward contracts applications, both types of financial instruments with billions of transactions per year.

  • Developed and managed a high-performance derivative financial instrument application, previously built with legacy technologies, and supervised the whole change process.

  • Developed and executed improvements to existing systems and created new ones for optimum efficiency.

Showcase

Full-stack Engineer - Irrigation Planning
Full-stack Engineer - Irrigation Planning
  • Utilized historical and meteorological data to optimize irrigation in the company's production areas

  • Successfully reduced water usage by 28% within the first three months of 2018

  • Implemented a stream architecture to allow real-time updates on the system

Full-stack Engineer - Board of Directors’ Financial Dashboard
Full-stack Engineer - Board of Directors’ Financial Dashboard
  • Implemented a messaging architecture to facilitate communication with other services

  • Developed and managed the integration with SAP applications

  • Designed authentication features, including a two-factor biometric requirement

Back-end Engineer | Machine Learning Engineer - Technology Contracts
Back-end Engineer | Machine Learning Engineer - Technology Contracts
  • Developed a Machine Learning algorithm for generating more accurate estimations, reducing deviance by 55% between internal estimations and business proposals

  • Conducted seminars to educate other company divisions about the solution

  • Presented the solution to the Information Technology Secretary of Brazil’s Federal Government outlining the use of Data Science in public contracts

Back-end Engineer - Production Platforms Operational Cost
Back-end Engineer - Production Platforms Operational Cost
  • Developed service architecture for synchronizing information with all production platforms, enabling offline activity

  • Created an accounting feature that integrated systems with the company's annual planning process

  • Application resulted in approximately $2.5M yearly savings, serving over 100,000 active users

Back-end Engineer - Pre-Salt Logistic Planning
Back-end Engineer - Pre-Salt Logistic Planning
  • Developed an algorithm for scoring logistic scenarios

  • Constructed features linked to pipe infrastructure planning

  • Solutions contributed to generating over $20B in 2017 revenue

Back-end Engineer - Derivative Financial Instruments
Back-end Engineer - Derivative Financial Instruments
  • Developed a feature for daily synchronization of all financial institutions concerning new financial instruments

  • Successfully deployed new applications with zero downtime

  • Implemented changes with no negative impact on the company

Education

BSc Information Technology
BSc Information Technology
Pontificia Universidade Catolica do Rio de Janeiro - Brazil
2007 - 2010 (3 years)