Anthony Oppus

Results-driven Software Developer with 2+ years of hands-on full-stack development experience across four companies, building production-grade web applications with React, TypeScript, Spring Boot, and NestJS. Skilled in responsive UI development, REST APIs, JWT authentication, database optimization, Docker, and Azure deployment, with a strong record of improving maintainability, performance, and system stability. Experienced in Agile collaboration and delivering clean, user-focused solutions.

SOFTWARE DEVELOPER at Alliance Software Inc. (2024-08 – Present)

• Independently implemented 10+ new features and Client Request for Change (RFC) tickets across Spring Boot and React applications with TypeScript, consistently meeting sprint deadlines and contributing to a 25% improvement in release velocity.
• Supported team members by sharing code review best practices and Root Cause Analysis (RCA) frameworks, contributing to an approximately 40% reduction in team-wide bug recurrence.
• Spearheaded database performance initiatives through in-depth code analysis, query optimization, and strategic indexing, reducing average query response times by 35% and improving overall system throughput.
• Collaborated with System Analysts (SA) and 3+ cross-functional teams daily to align technical implementation with business requirements, delivering 20+ features and resolving numerous bugs with minimal requirement-related rework.
• Managed end-to-end production deployment of features and hotfixes on Microsoft Azure, conducting regression testing suites and validating system stability to sustain 99%+ uptime across releases.
• Coordinated with the Technical Lead on full-stack architecture and RESTAPI integration across 5+ interconnected systems, ensuring backend and frontend alignment with client requirements and reducing integration issues by an estimated 30%.

SOFTWARE DEVELOPER at zongHa Technology (2024-03 – 2025-09)

• Independently architected and developed the full frontend application from scratch using React, Next.js, and TypeScript, delivering fully responsive UIs across 5+ device breakpoints and achieving zero design-deviation defects at launch.
• Defined scalable folder structures and coding conventions for the frontend codebase, ensuring alignment with the backend developer and Technical Lead for a more maintainable and consistent codebase.
• Independently integrated Internationalization (i18n) to support multi-language functionality across 3+ locales, expanding the application's reach to international markets.
• Engineered a complete JWT-based authentication system using NestJS, with automated email notifications via SMTP and Mailgun, reducing manual user onboarding effort by approximately 60%.
• Integrated interactive 3D models and GSAP animations to enhance user engagement, delivering a richer, more interactive product experience that received positive client feedback.
• Implemented production-level monitoring and alerting system using Prometheus, Grafana, Loki, and Promtail to track PostgreSQL slow queries and service downtime, configuring multi-severity alert rules with automated Slack and email notifications for real-time incident detection
• Reduced bug recurrence rate by ~40% by applying RCA-driven debugging practices and structured fix documentation, improving overall code quality and system stability.
• Improved database query response time by ~35% through strategic indexing and query optimization, directly enhancing system performance for end users.
• Improved frontend codebase maintainability by establishing folder structure conventions and coding standards, ensuring consistency across the development team.
• Delivered pixel-accurate, fully compliant UI screens with 100% design fidelity across multiple projects, earning client sign-off on every submission with zero revision cycles.
• Supported 99%+ production uptime by conducting rigorous regression testing and deploying hotfixs to Azure with minimal lead time.

BACHELOR OF SCIENCE in COMPUTER SCIENCE – Bohol Island State University (2019 – 2023)