Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m a full-stack software engineer with a B.S. in Computer Science and hands-on experience building data-driven applications using Java, Spring Boot, React, and PostgreSQL. I focus on clean REST API design, reliable persistence with JPA/Hibernate, and thorough testing using JUnit/Jacoco and TDD practices. I’ve developed multiple full-stack projects—ranging from an investment research and portfolio platform with valuation/recommendation logic to a multi-developer web app featuring interactive maps and live data integration. I also bring cross-functional analytical experience from professional roles in quality analysis and KPI/dashboard development, collaborating effectively with global teams in English, Indonesian, and Chinese.…I’m a full-stack software engineer with a B.S. in Computer Science and hands-on experience building data-driven applications using Java, Spring Boot, React, and PostgreSQL. I focus on clean REST API design, reliable persistence with JPA/Hibernate, and thorough testing using JUnit/Jacoco and TDD practices. I’ve developed multiple full-stack projects—ranging from an investment research and portfolio platform with valuation/recommendation logic to a multi-developer web app featuring interactive maps and live data integration. I also bring cross-functional analytical experience from professional roles in quality analysis and KPI/dashboard development, collaborating effectively with global teams in English, Indonesian, and Chinese.

Michael Giovanni Sie

Full Stack Developer, Software Engineer, Back-End Developer, +2





I’m a full-stack software engineer with a B.S. in Computer Science and hands-on experience building data-driven applications using Java, Spring Boot, React, and PostgreSQL. I focus on clean REST API design, reliable persistence with JPA/Hibernate, and thorough testing using JUnit/Jacoco and TDD practices. I’ve developed multiple full-stack projects—ranging from an investment research and portfolio platform with valuation/recommendation logic to a multi-developer web app featuring interactive maps and live data integration. I also bring cross-functional analytical experience from professional roles in quality analysis and KPI/dashboard development, collaborating effectively with global teams in English, Indonesian, and Chinese.…I’m a full-stack software engineer with a B.S. in Computer Science and hands-on experience building data-driven applications using Java, Spring Boot, React, and PostgreSQL. I focus on clean REST API design, reliable persistence with JPA/Hibernate, and thorough testing using JUnit/Jacoco and TDD practices. I’ve developed multiple full-stack projects—ranging from an investment research and portfolio platform with valuation/recommendation logic to a multi-developer web app featuring interactive maps and live data integration. I also bring cross-functional analytical experience from professional roles in quality analysis and KPI/dashboard development, collaborating effectively with global teams in English, Indonesian, and Chinese.

Available to hire

I’m a full-stack software engineer with a B.S. in Computer Science and hands-on experience building data-driven applications using Java, Spring Boot, React, and PostgreSQL. I focus on clean REST API design, reliable persistence with JPA/Hibernate, and thorough testing using JUnit/Jacoco and TDD practices.

I’ve developed multiple full-stack projects—ranging from an investment research and portfolio platform with valuation/recommendation logic to a multi-developer web app featuring interactive maps and live data integration. I also bring cross-functional analytical experience from professional roles in quality analysis and KPI/dashboard development, collaborating effectively with global teams in English, Indonesian, and Chinese.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Advanced

Indonesian

Fluent

Chinese

Fluent

Work Experience

Full-Stack Software Developer Intensive (Training) at Zip Code Wilmington

April 1, 2026 - June 1, 2026

Completed an intensive full-stack training program with 1,000+ hours of project-based development using Agile/Scrum and TDD. Built full-stack applications using Java, SQL, and Spring Boot, including projects such as an investment research/portfolio platform and a FIFA venues web app with interactive map search/filtering.

Credit Analyst at Barclays

February 1, 2026 - April 1, 2026

Evaluated consumer credit profiles and financial datasets to support judgment-based lending decisions. Validated applicant data against complex policy constraints to ensure data consistency and regulatory compliance, using careful analysis of risks and discrepancies within structured financial information.

Sales and Operations Management at Penske

July 1, 2025 - February 1, 2026

Increased customer engagement and supported business growth by developing tailored consumer and commercial solutions. Strengthened client relationships and managed fleet operations across local and district accounts, coordinating operational execution and performance to meet business needs.

Quality Assurance at Under Armour

September 1, 2021 - June 1, 2025

Managed product quality performance dashboards to track defect data and identify reporting trends. Conducted systems audits to isolate anomalies, communicated regression risks, and implemented corrective actions to improve quality outcomes.

Manufacturing Excellence at Adidas

March 1, 2020 - December 1, 2020

Led KPI tracking and dashboard development across global footwear factories. Analyzed operational performance data to identify inefficiencies, mitigate risks, and support data-driven improvements across production processes.

IT Support, Translator (Chinese) at PT. Grolen New Building Material

July 1, 2019 - January 1, 2020

Delivered end-to-end IT support across factory systems while enabling cross-border operations. Translated technical and business communications between English, Chinese, and Indonesian to support operations and collaboration.