Lucas Martins

Lucas Martins

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Senior Backend / Platform Engineer | Distributed Systems | ML-Powered Products
Rio de Janeiro, Brazil
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Résumé

Jobs verified_user 0% verified
  • Globo
    Senior Software Engineer
    Globo
    Jun 2025 - Current (11 months)
    Developed a new whole ecosystem using Java 17, Spring Boot, MySQL to orchestrate the deliveries of Advertisements sent by clients to will be shown on Globo Channels, affiliates and portals. Currently the project is already in production. Developed a set of functions and microservices using Python to integrate AI Models and Tools to the workflow of Advertisement delivery. Those functions and microservices are responsible for leading the advertisement material to an analysis flow. It is responsible to extract critical information that is required to classify materials and check whether they are compliant with Globo Policies. These services were responsible for speed-up advertisement evaluation, leading to a huge boost of productivity and allo
  • Bradesco
    Senior Software Engineer
    Bradesco
    Apr 2024 - May 2025 (1 year 2 months)
    Developed a new microservice using Java 17, Spring Boot, and MongoDB to integrate with mainframe systems and the FICO credit scoring engine, enabling automated loan interest rate calculations. The project is currently in the homologation phase, supporting Bradesco’s cloud migration strategy. Diagnosed and resolved critical issues in legacy Java 6 and 8 applications, delivering performance improvements and ensuring uninterrupted business operations. Led the migration of monolithic legacy services to Azure cloud environments, enhancing scalability, reducing technical debt, and improving deployment pipelines. Designed and implemented new Java microservices, empowering bank managers to offer more flexible and competitive loan products. Resolved
  • Nubank
    Software Engineer
    Nubank
    Jan 2023 - Mar 2024 (1 year 3 months)
    During my time at Nubank, I held a software engineering role where I specialized in Clojure and worked with a microservices setup that utilized Apache Kafka for messaging and Datomic as the database. My primary responsibility involved creating services that facilitated credit card bill payments, which are components of any functioning credit card system catering to a large number of users who pay their bills daily. Moreover, I was actively involved in on-call duties to ensure the operation of the card services. Additionally, I employed automation testing tools to write unit and integration tests, ensuring that my modifications were functioning correctly. I also developed Canary tests, Chaos tests, and Stress tests to verify that my applicat
  • Amazon
    Software Development Engineer I
    Amazon
    Dec 2021 - Dec 2022 (1 year 1 month)
    During my time as a Software Development Engineer I at Amazon, I heavily utilized Java as the programming language within a microservices framework that leveraged AWS tools like EC2, DynamoDB, SQS, and SNS. My primary responsibility revolved around creating and maintaining applications for generating invoices for items sold on Amazon's online marketplace, which handled millions of requests daily. In addition to coding, I participated in on-call duties to ensure smooth operations and promptly address any system issues. To guarantee application resilience, I implemented various automation testing tools, creating different types of tests throughout the development process, including unit and integration tests, as well as canary, stress, and ch
  • Radix Engenharia e Software
    Software Developer II
    Radix Engenharia e Software
    Mar 2018 - Dec 2021 (3 years 10 months)
    At Radix I started as Administrative Assistant. However because of my Computer Technician degree and my in progress graduation in Computer Science, they gave me the opportunity to work with TI Projects starting as QA and progressing to Software Developer. As a Software Developer II: Delivered end-to-end applications using different stack of technologies such as Java, JavaScript/TypeScript, C#, and React for distinct players of O&G market including Petrobras, Chevron, ExxonMobil and more, achieving customer satisfaction and the opening of new projects. Developed internal applications responsible to automatize internal processes using C#, TypeScript, React, MongoDB and Azure Devops, leading to an improvement in operational efficiency. Migra
Education verified_user 0% verified
  • UERJ
    Bacharelado em Ciência da Computação
    UERJ
    Aug 2017 - Dec 2024 (7 years 5 months)
  • F
    Técnico em Informática, Programação de Computadores
    FAETEC – FUNDAÇÃO DE APOIO A ESCOLA TÉCNICA
    Jan 2014 - Jan 2015 (1 year 1 month)
  • Microlins
    Montagem e Manutenção de Computadores e Rede, Instalação e Manutenção de Computadores
    Microlins
    Jan 2009 - Jan 2010 (1 year 1 month)
Projects (professional or personal) verified_user 0% verified
  • Universidade do Estado do Rio de Janeiro UERJ
    Apprenticeship Machine Learning Engineer
    Universidade do Estado do Rio de Janeiro UERJ
    May 2025 - Current (1 year)
    Partnering with my college professor, a doctor completing his fourth gastroenterology residency and a clinic specialized in gastroenterology. I'm developing a CNN Model that will be responsible for analyzing and identifying on photos taken on endoscopy procedures whether the patient has some kinds of injuries on his oesophagus at first the model will identify Barretts, Short Barretts, Oesophagitis and Oesophagitis B. I'm using python and tools like tensorflow, torchvision, pandas, matplotlib, sklearn and numpy to code the model. About techniques, transfer-learning with VGG 16 has been used to speed-up the learning process and augmentation to mitigate the small quantity of data that I have at the moment. At the moment the model is in develo