Leonardo D.
Full-stack Product Engineer

Skills

Java

Javascript

Php

Python

Amazon Aws

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Bio

Diligent professional with 15 years of experience in information technology and internet solutions, commencing a career as a systems programmer. Possesses foundational and advanced knowledge in IT, complemented by strong communication skills. Demonstrates a high level of ethics and responsibility, particularly in entrepreneurial activities within the IT sector. Experience spans major organizations and public agencies, including federal judicial entities, aviation authorities, education ministries, defense advocacy groups, and financial institutions.

Development Analyst
1/1/2023 - Present

Developed and supported pension systems, notably the PARTICIPANT ROOM, a Management System designed to offer support and assistance to workers and their families at the end of the working life. Utilized JAVA/Spring Boot for development and integrated services through API Gateway and SSO. Employed SQLServer for database management. Demonstrated extensive knowledge of process aggregators, edge patterns, and logging mechanisms. Applied Scrum methodology for project management and utilized Docker for containerization. Leveraged AWS for cloud services, managed version control using GitLab, tracked issues with JIRA, tested APIs with Postman, and automated deployments with Jenkins.
Development Analyst
12/1/2021 - 1/1/2023

Specialized in the development and maintenance of financial systems using PHP and Python, with extensive work on TRITON, a North American loan financial system. Leveraged frameworks such as Django REST Framework (DRF) in conjunction with PostgreSQL and React for robust system architecture. Demonstrated strong proficiency in Scrum methodologies, containerization with Docker, and cloud services through AWS. Practiced effective version control and collaborative coding using GitHub, while efficiently managing project tasks with JIRA. Utilized Postman for API testing, Openreplay for real-time monitoring, Sentry for error tracking, and Slack for team communication. Successfully developed an AWS Lambda function employing artificial intelligence to accurately calculate risk scores.
Developer
4/1/2014 - 11/1/2022

Developed systems and microservices utilizing the Spring Boot/Java framework and Angular/TypeScript. Created a monolithic system for the prevention of critical incidents and events using Django/Python and artificial intelligence libraries. Produced artifacts through reverse engineering of various legacy and new systems. Conducted function point counting for improvement and development projects. Engaged in the development and maintenance of systems using Java, Python, and PHP, enhancing technical expertise in these programming languages.
Full Stack Developer
8/1/2011 - 11/1/2012

Reviewed business proposals, conducted project estimations, and performed requirements analysis. Worked on the ICMBio project crafting artifacts using UML and RUP methodologies, and measured software using the NESMA method (indicative, estimated, and detailed counts) in accordance with IFPUG standards. Developed software utilizing Laravel and PostgreSQL, adhering to RUP methodology with tools such as Enterprise Architect, SVN, and Jenkins.
Development Analyst
6/1/2010 - 7/1/2011

Developed artifacts and data models while gaining a deep understanding of business rules. Specialized in system development using the ZEND Framework. Devised comprehensive test plans and use cases, and conducted integrated tests on various systems. Led the development and deployment of modules for Fies, Sisu, and Prouni systems.
Development Analyst
10/1/2005 - 1/1/2010

Facilitated problem-solving and remained current with industry trends to enhance project execution in PHP and Java. Developed the integration of air navigation systems INFOMET and INFRAEROCOM using Java and the Spring framework, which positively impacted over 67 airports in Brazil.
Development Analyst
2/1/2003 - 10/1/2005

Gained significant expertise in reverse engineering a management system initially developed in Java, and subsequently redeveloped the same system using PHP and MySQL. Worked extensively on the development and maintenance of Java-based systems within a federal agency, ensuring system functions were precisely mirrored in the new environment.
Software Development Analyst
1/1/2001 - 1/1/2003

Developed systems using PHP and MySQL, with a focus on creating efficient and robust web applications. Undertook significant responsibilities for the development and maintenance of the Directorate's Decision System (OLAP), ensuring the system's reliability and performance. Managed and updated the CASSI portal on the internet, utilizing a combination of JavaScript and PHP to enhance user experience and functionality.
Developer
1/1/2000 - 1/1/2001

Developed systems using Java and PHP, with a particular focus on creating the Occupational Health System (OHS) utilizing object-oriented PHP. This system efficiently captured data based on the International Classification of Diseases (ICD) to document the reasons for employee leave and provided recommendations for possible preventative measures. The implementation of OHS led to a significant reduction in the absenteeism rate of federal justice employees by 28%.