Ismael Medeiros
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Ismael Medeiros

Ismael Medeiros

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Senior software engineer | Node.js/TypeScript
Federal District, Brazil

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Résumé

Jobs verified_user 0% verified
  • A
    Back end developer
    All Blocks Group
    Sep 2022 - Jan 2023 (5 months)
    - Planned, designed, and published a secure and scalable TypeScript backend for an NFT marketplace that facilitated the buying and selling of digital assets - Integrated the backend with AWS S3 for efficient storage, PostgreSQL for reliable data management, and Kafka for real-time messaging
  • L
    Senior software developer
    Lacuna Software
    Jul 2022 - Current (3 years)
    - Successfully migrated a Node.js project to use TypeScript and implemented enhanced logging logic, resulting in improved network governance - This increased the efficiency in solving problems by up to 20% and received positive feedback from stakeholders - Proactively identified and solved issues related to the VPN connection and DNS resolution between peers to garantee securing connection, improving reliability of the network Conceptualized a smart contract for physical asset tokenization based on EIP-20 and ERC-721 standards on a Hyperledger Fabric network, enabling clients to digitize their assets and securely manage them on a permissioned blockchain controlled by Brazilian notary authorities. Streamlined the automation scripts for four
  • AvantStay
    Back end developer
    AvantStay
    Feb 2022 - Jun 2022 (5 months)
    - Deconstructed a complex synchronization problem in a event-based pipeline, and crafted an effective action plan to solve the issue without impacting user experience - Divided the problem into four manageable sub-tasks, and collaborated closely with team members to ensure timely resolution - Architected a robust invitation system capable of handling parallel invitations to tens of homeowners, while ensuring that no duplicate emails were sent by implementing idempotent events
  • L
    Senior software developer
    Lacuna Software
    Jun 2019 - Jun 2021 (2 years 1 month)
    - Successfully deployed a Spring Boot backend and an Angular website inside a NGINX reverse proxy running inside a highly available AWS EC2 machine Led the full stack project from its conception to delivery to the client, managing a team of developers throughout the development lifecycle. This involved overseeing the design and architecture of the project, as well as ensuring timely delivery of milestones and adherence to quality standards. Created a robust authentication and authorization system using Spring Security to handle users belonging to multiple organizations with varying permissions. This involved implementing custom authentication providers, authorization rules, and integrating with external identity providers. Implemented a se
  • L
    Software developer
    Lacuna Software
    Mar 2018 - Jun 2019 (1 year 4 months)
    - Developed and tested client libraries written in C#, Java, Node.js, Python, and PHP to support communication with a REST API - This allowed clients to easily integrate the product with their existing systems, resulting in a 40% increase in product adoption - Monitored API issues in Azure and quickly created solutions to minimize downtime and reduce the impact on clients. Used my strong problem-solving skills to identify the root cause of issues Developed and implemented integration between a .NET Core application and external services such as timestamp providers and CRLs storage cache provider, which resulted in a 50% reduction in reliability and downtime problems and made the digital signature process up to 15% lighter. Delivered a relia
  • L
    Software Developer Junior
    Lacuna Software
    Mar 2016 - Mar 2018 (2 years 1 month)
Education verified_user 0% verified
  • Universidade de Brasília
    Master of science, computer science
    Universidade de Brasília
    Mar 2020 - Dec 2022 (2 years 10 months)
  • Universidade de Brasília
    Bachelor of science, computer engineering
    Universidade de Brasília
    Mar 2014 - Dec 2018 (4 years 10 months)
Projects verified_user 0% verified
  • Universidade de Brasília
    DogeFuzz - A Flexible Fuzzer for Smart Contracts
    Universidade de Brasília
    Jan 2022 - Current (3 years 6 months)
    Crafted a Golang project that generates random inputs using different strategies to test the security of Ethereum smart contracts in a local node using Go-Ethereum and tracing the execution of the smart contracts to identify possible weaknesses