Rony D.

Back-end and Systems Engineer

Backend Developer
11/1/2022 - Present

Maintained and evolved the parliamentary management system and legislative decision-making processes. Developed proficiency using the Java stack, Hibernate, and the Mentawai MVC framework. Leveraged PostgreSQL for database management and Memcached for caching. Utilized Grafana for monitoring and app insights for performance tracking and analytics.

Blockchain Developer
9/1/2022 - Present

Gained expertise in developing smart contracts on Ethereum, ensuring secure and efficient decentralized applications. Engaged in the implementation and study of automatic trading strategies, demonstrating proficiency in creating trading robots utilizing Ethers.js and Web3.js with NodeJS, Python, and Solidity. Successfully implemented an NFT marketplace using NextJS, showcasing front-end development skills and enhancing user experience in blockchain-based commerce platforms.

Backend Developer
3/1/2022 - 9/1/2022

Developed comprehensive API services utilizing NestJS and TypeScript, while effectively managing database interactions with TypeORM and PostgreSQL. Created robust smart contracts in Solidity, leveraging Hardhat and Ethers for deployment and testing. Engineered detailed reports through integration with Alchemy and Etherscan APIs, ensuring seamless data retrieval and accurate analytics.

Senior Fullstack Analyst
8/1/2020 - 6/1/2021

Gained extensive experience in Java backend development and Dotnet Core while working on an institutional portal project. Contributed to backend development using Python with Flask and enhanced frontend capabilities utilizing Node.js and React on a product metrics project. Developed robust technical expertise across multiple frameworks and languages, focusing on both backend and frontend systems for high-demand environments.

Architecture and Software Development
2/1/2018 - 4/1/2018

Gained experience in the Rio de Janeiro area, Brazil, working on a project integrating hospital units to provide enhanced user outcomes. Designed architecture for new features and developed using technologies such as WSO2, Java, Grails, Spring Boot, JMS Messaging, Hibernate, and Quartz.

Software DevOps Engineer
7/1/2017 - 9/1/2017

Specialized in quality assurance and software safety by consistently applying and seeking out the most effective techniques in software automation and processes. Demonstrated expertise in implementing DevOps principles to enhance the delivery speed of applications and services. Leveraged cultural philosophies, practices, and tools designed to optimize and improve products more efficiently than traditional software development and infrastructure management methodologies. Utilized a range of automation frameworks and continuous integration/continuous delivery (CI/CD) tools to streamline development workflows, ensuring rapid deployment and consistent performance. Proficiency in containerization and orchestration technologies, such as Docker and Kubernetes, facilitated scalable and reliable software distribution. Employed advanced monitoring and logging solutions to maintain system health and quickly address issues, ensuring a stable and secure production environment.

Senior Systems Analyst
10/1/2016 - 11/1/2016

Worked as a systems analyst specializing in Java, Grails, Node.js, and Ionic to develop an innovative product aimed at the global hotel and independent lodging sector. Overcame significant deadline challenges through meticulous planning and execution. Developed technical proficiency in both front-end and back-end technologies, contributing to all phases of the software development lifecycle. Applied skills in system design, coding, and debugging to ensure the timely delivery of high-quality software solutions.

Senior Java Developer/ Software Architect
8/1/2013 - 1/1/2016

Contributed to the Rio Classifieds project by implementing architecture and services for applications and integrating these with client applications. Managed the development of SEO and SITEMAP functionalities, alongside building a core for advertisement capture. Developed an intelligent search system utilizing Elastic Search and enhanced the advertisement web portal for better public display. Gained technical proficiency in Java, Python, and Grails, while actively employing Rest, Solr, and Elastic Search for various project components.

Senior Developer Analyst
4/1/2010 - 1/1/2013

Contributed to the development of a content portal, leveraging technologies and methodologies such as Kanban, Java, Spring, and SOA. Employed Informatica Power Center and ETI to integrate and automate batch systems, enhancing operational efficiency. Served as an instructor for Vignette CMS in Asia, providing necessary support to developers involved in concurrent product development efforts.

Software Developer
12/1/2009 - 6/1/2020

Oversaw the development of products and solutions for an online classifieds platform, focusing on software architecture and development. Served as Product Owner, leading the conceptualization and execution of innovative services aimed at connecting users and enhancing their experience. Specialized in identifying inefficiencies and advocating for process automation to continually elevate societal quality of life. Utilized extensive skills in software engineering and project management to deliver robust, user-centric solutions.

Owner
12/1/2009 - 12/1/2010

Led architecture, survey, and implementation of systems focused on e-commerce and B2C and C2C services. Emphasized leadership, deadline compliance, organization, code quality, and the implementation of solutions using good development practices and Design Patterns. Developed technical expertise in Spring MVC, Hibernate, Json, Jquery, and Webservices. Gained proficiency in Groove, Grails, and Oracle 9i, while ensuring efficient deployment and functionality on Glassfish. Additionally, contributed to mobile development projects using Android.

Systems Analyst
1/1/2008 - 3/1/2010

Based in the Rio de Janeiro region, demonstrated expertise in the analysis and development of J2EE systems using Weblogic and Aqualogic. Proficient in BPM, BPEL, Java, and Grails, applied comprehensive knowledge of frameworks including Beehive, Struts, Wicket, Hibernate, Spring JDBC, Spring MVC, and SOA. Effectively managed JMS (Queues) and developed WebServices. Showcased proficiency in tools such as SoapUI, Ant, and Maven, and executed tests using JUnit and DBUnit. Contributed to integration, front-end, and back-end applications, particularly in the B2W process area for platforms like americanas.com, submarino.com, and shoptime.com.

Systems Analyst
2/1/2007 - 1/1/2008

Spearheaded the development of systems using Java J2EE and J2SE to address the requirements of a SUS project. Delivered a robust J2EE application focused on managing the student registration module for the Rio de Janeiro Distance Education Center (CEDERJ). Ensured the systems met project specifications and user needs through rigorous coding practices and comprehensive system testing.

Java Developer
1/1/2005 - 2/1/2007

Developed systems utilizing Java J2EE and J2SE, along with .NET languages. Specialized in using Struts and servlets for J2EE applications. Demonstrated a strong grasp of enterprise-level application development and deployment.

Information Technology at Estácio de Sá University
2003 - 2008

MITx - uINOV8x User Innovation at Massachusetts Institute of Technology (MIT)
5/1/2016

MITx: 6.BAx Tackling the Challenges of Big Data at Massachusetts Institute of Technology (MIT)
7/1/2015

Java Career at Alura Cursos Online
12/1/2014

IBM: Technical Introduction to IBM MQ (WM102) at IBM
7/1/2014