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Steven Rey Sequeira

@stevenreysequeira

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Results-driven Senior Java Developer with 9+ years of experience.

Costa Rica

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What I'm looking for

I am looking for a role that fosters innovation, collaboration, and continuous learning.

I am a Senior Java Developer with over 9 years of experience in designing and developing scalable applications. My expertise lies in Object-Oriented Programming (OOP), Java SE & EE (Java 8-23), and modern frameworks. I have a strong background in database management, cloud services, and DevOps tools, which allows me to create efficient and high-performing applications.

Throughout my career, I have successfully led multiple projects, focusing on performance optimization and clean code practices. At Moody's, I developed a web application using Vaadin and Java 23, significantly improving system efficiency. My previous roles have equipped me with strong mentoring and leadership skills, and I am passionate about sharing knowledge and best practices with my team.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer

Current

Moody's

May 2024 - Present (1 year 1 month)

Maintained multiple projects, adding new features and resolving bugs. Developed a web application using Vaadin and Java 23 to automate business processes. Led a proof of concept (PoC) to refactor and improve system efficiency, reducing processing times from 6 minutes to 2 minutes, achieving a 67% efficiency improvement.

Java 23 Vaadin Web Application Development Feature Improvement Performance Optimization

Senior Java Developer

DataNeoShore

Nov 2022 - May 2024 (1 year 6 months)

Developed and optimized data import/export processes. Created a tool to compare database records, improving QA efficiency by reducing verification time from 30 minutes to an average of 2 minutes, achieving a 93% efficiency improvement. Implemented performance optimizations and bug fixes.

Data Imports Performance Optimization Java

Senior Java Developer

Prodigious Latin America

Sep 2021 - Nov 2022 (1 year 2 months)

Maintained and enhanced the Bank of America web application using Java 8, AEM, and JSP. Led an internal workshop on Java Streams to enhance team knowledge.

Java 8 JSP Java Streams

Senior Java Developer

Hangar Worldwide

Jun 2019 - Sep 2021 (2 years 3 months)

Developed features for BMW US, Mini Cooper US, and Mitsubishi US websites using Java 8-11, AEM, Spring Boot, AWS Lambda, and Docker. Designed and implemented a QA automation tool, reducing manual testing time by 15%.

Java 8 11 Spring Boot AWS Lambda Docker QA Automation Web Development

Senior Java Developer

Micro Focus

Nov 2017 - Jun 2019 (1 year 7 months)

Migrated Oracle JDK to OpenJDK for ArcSight Logger & Connectors. Led security initiatives, mitigating major vulnerabilities. Automated development environment setup, reducing onboarding time from 2 hours to 30 minutes, achieving a 75% efficiency improvement.

Automation

Front-End Developer

UST Global

Jan 2016 - Jan 2017 (1 year)

Enhanced UI/UX for RapiWeb, focusing on front-end development.

Front End Developer RapiWeb JavaScript HTML CSS UI UX Enhancements

.NET Developer

Mobilize.Net

Jan 2015 - Jan 2016 (1 year)

Led software migration projects as a .NET Developer.

.NET Developer C++VB.NET

Senior Java Developer

OTSI

Jan 2017 - Present (8 years 5 months)

Focused on security and automation for ArcSight Logger.

Security Automation

Education

Degrees, certifications, and relevant coursework

Universidad Latino Americana

Bachelor of Science, Computer Engineering

Completed a Bachelor of Science degree with a focus on Computer Engineering. Gained foundational knowledge in software development, hardware systems, and problem-solving methodologies relevant to the field.

avVenta

Training, Web Development

Participated in a specialized training program focused on Web Development. Acquired practical skills and knowledge in building and maintaining web applications.