Java Developer Senior

Renato Bacelar da Silveira

Senior Java Developer

Professional Summary

Senior Java Developer with over 20 years of experience specializing in backend systems, with more recent cloud-based solutions, and IoT development. Proficient in Java (J2SE, J2EE), SpringBoot, and microservices architecture, with a proven track record in optimizing performance and enhancing system structures. Experienced in delivering high-impact solutions across various industries, including legal services, agriculture, and healthcare, while collaborating effectively within cross-functional teams. Adept at mentoring junior developers and contributing to complex problem-solving, with a strong focus on scalable and sustainable technology solutions. Key Skills

• Languages: Java (J2SE, J2EE), Python, PHP 7.x

• Frameworks: SpringBoot, SpringBatch, Hibernate, Apache Camel

• Web Technologies: JavaScript, TypeScript, Angular, JAX-WS, SOAP, REST

• Databases: MySQL, PostgreSQL, Cassandra, Hibernate, JPA

• Tools: Maven, Jenkins, Docker, WildFly, Git, SVN

• Cloud & IoT: Heroku, AWS S3, Google Earth Engine API, Raspberry Pi

• Security: AES Encryption, Bouncy Castle Crypto, Secret Sharing

• Project Management: Jira, Agile Sprints

Pofessional Experience

Senior Java Developer – Legal Sight / Sun IP

Aug 2022 – Sep 2024

• Contributed to the development and maintenance of a Patent Registration website by supporting feature implementation using PHP 7, JavaScript, and TypeScript.

• Assisted in backend development for a patent translation platform using Java 11, SpringBoot, and JPA.

• Key Achievement: Implemented over 100 country rules for patent annuities and trademark renewals, enabling the platform to scale internationally. Senior Developer – Eden Grow Systems

May 2021 – May 2022

• Worked collaboratively with the development team, implementing key features of the Eden app in PHP7 and Python.

• Assisted with database structure design and contributed to automated data synchronization between systems.

• Key Achievement: Played a key role in the development of a robotic plant-growing platform, enhancing sustainable food production in remote and off-planet environments. Senior Java Developer (Ad-hoc Projects) – Self-Employed Feb 2020 – Mar 2021

• Performed ad-hoc development tasks for clients using SpringBoot, JPA, and MySQL.

• Focus: Provided technical support and solutions for various small-scale projects, primarily in backend development.

Senior Java Developer – Project “Flow Back” / Water Conservation Dec 2018 – Nov 2019

• Contributed to the development of IoT systems for smart irrigation, utilizing Raspberry Pi and Apache Camel for real-time data processing.

• Key Achievement: Supported the creation of a water conservation system that reduced pump usage by 14%, optimizing irrigation based on sensor data. Senior Java Developer – Helios ITS

Nov 2017 – Oct 2018

• Supported the enhancement of legacy claims authorization systems and developed a password encryption module for WildFly servers.

• Regularly provided guidance to junior developers when needed, contributing to collaborative problem-solving.

• Key Achievement: Successfully migrated projects to WildFly 12 and improved server security by implementing secret-sharing encryption. Senior Java Developer – CompuGroup Medical

Feb 2017 – Aug 2017

• Developed claim-switch wrappers and worked on web interfaces using Angular and proprietary frameworks.

• Assisted junior team members in resolving complex issues during development cycles.

• Key Achievement: Identified and resolved key authentication and database issues, improving system functionality across multiple regions. Senior Java Developer – Deloitte Digital

Oct 2016 – Feb 2017

• Assisted with the transformation of backend systems by implementing Java modules and advising on best practices for code separation.

• Provided informal mentoring and troubleshooting support to junior developers in the team.

• Key Achievement: Helped reduce the application size by 80% and introduced “in-team DevOps” processes to streamline development timelines. Senior Java Developer / Consultant – Fluidity Solutions Apr 2016 – Oct 2016

• Consulted on backup and recovery systems and assisted with supporting student systems.

• Frequently collaborated with junior team members to troubleshoot and optimize code.

• Key Achievement: Recommended and influenced to a more concrete proposition, the implementation of a ransomware recovery system, expanding the company’s client base. Brief Skills Matrix

Skill Category Technology Proficiency Months

Programming Languages Java (J2SE, J2EE) 5/5 60

Python 3/5 24

PHP 7.x 4/5 12

Frameworks SpringBoot 5/5 48

SpringBatch 4/5 24

Hibernate 4/5 36

Apache Camel 4/5 36

Web Technologies JavaScript 3/5 24

TypeScript 3/5 12

Angular 3/5 12

Database Technologies MySQL 5/5 36

PostgreSQL 4/5 18

Tools & Environments Docker 2/5 24

Jenkins 4/5 36

WildFly 4/5 12

Cloud & IoT AWS S3 3/5 12

Raspberry Pi 5/5 24

Security AES Encryption 4/5 12

Methodologies Agile (Scrum) 5/5 48

Test-Driven Development 4/5 36

Domain-Driven Design 4/5 24

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