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Viver Val P. Bungag

Senior Full-Stack Software Engineer | Java & Spring Boot | AWS | Microservices

Summa Cum Laude Computer Science graduate with more than four years of hands-on experience designing, scaling, and maintaining robust cloud-native enterprise systems. Specialized in Java, microservices architecture, AWS, and modern front-end frameworks. Proven track record of optimizing system performance, leading cross-functional modernization initiatives, and driving CI/CD improvements to accelerate delivery.

LocationDavao City, Philippines
Phone+63 976 123 8892
Emailviverbungag1@gmail.com
GitHubgithub.com/viverbungag
LinkedInlinkedin.com/in/viver-bungag
4 YrsEnterprise Engineering
12%AWS Cost Reduction
30%Batch Runtime Cut
50%API Speed Boost
76%Query Optimization
1 HrSaved per Deployment

Core Competencies & Technology Stack

Backend & Architecture

Java, Spring Boot, Quarkus, Microservices, REST API Design, GraphQL, Spring Security, gRPC, WebSockets

Cloud & Infrastructure

AWS (EC2, RDS, S3, Lambda, SQS, SNS, Cognito), Docker, Kubernetes, Terraform, LocalStack

Data, Security & Observability

PostgreSQL, DB2, Redis, Kafka, Keycloak, OAuth, NextAuth, Grafana, Loki, Promtail, Spring Batch

DevOps & Engineering Practices

CI/CD, GitOps (ArgoCD), GitHub Actions, Azure DevOps, TDD, Distributed Systems, Performance Tuning

Frontend Engineering

React, Next.js, Vue.js, Angular, TypeScript, JavaScript, TailwindCSS, Shadcn UI, React Query

Development Tools

Git, Liquibase, Flyway, SonarQube, Jira, Playwright, GPT Codex, JSoup, Bitbucket, Confluence

Professional Experience

Crescendo Collective
Backend Developer
February 2026 – Present

Connectivity Management Platform — Astronautics

Lead Full-Stack Developer
Tech: Java, Spring Boot, Next.js, PostgreSQL, Flyway, GraphQL, AWS (Lambda, SNS, SQS, EC2, RDS, S3), Terraform, Grafana, Loki
  • Spearheaded the end-to-end modernization of legacy systems, successfully migrating the backend stack to Java 25 and the frontend to Next.js, vastly improving maintainability and developer velocity.
  • Architected and implemented seamless GraphQL communication patterns to optimize data fetching between distributed front-end and back-end systems.
  • Engineered high-performance data export pipelines utilizing database projections, streaming responses, and read-only transactions, slashing query execution time by 76% (from 17s to 4s).
  • Slashed AWS infrastructure costs by 12% through comprehensive architectural reviews and strategic resource right-sizing.
  • Established centralized observability using Grafana, Loki, and Promtail, drastically reducing mean-time-to-resolution (MTTR) for complex distributed production incidents.

Enterprise Compliance Workflow System — MLR Express

Full-Stack Developer
Tech: Java, Quarkus, Next.js, PostgreSQL, Flyway, React Query, TailwindCSS, GPT Codex
  • Architected highly secure RESTful APIs to generate, validate, and inspect deeply nested and complex service request payloads.
  • Developed robust JSON-based import/export workflows featuring advanced conflict detection and transactional persistence to ensure data integrity.
  • Accelerated development cycles by integrating GPT Codex into daily workflows to scaffold secure APIs and interactive UI components rapidly.

Automated SEO & Performance Analysis System — SEO Agent

Lead Full-Stack Developer
Tech: Java, Spring Boot, PostgreSQL, Liquibase, Playwright, Docker, OpenAI API, Google PageSpeed API
  • Designed and built scalable backend services to automate concurrent website crawling, metadata extraction, and performance tracking.
  • Integrated OpenAI and Google PageSpeed APIs to generate AI-driven, actionable metadata optimization recommendations.
  • Boosted system throughput and reliability via asynchronous processing logic and containerized deployments.
Accenture Inc.
Analyst Programmer
June 2025 – December 2025

Public Sector Housing Benefits System

Backend Developer
Tech: Java, Spring Boot, Spring Batch, Angular, TypeScript, DB2 SQL, JCL, SonarQube, Azure DevOps
  • Contributed to the full-stack development and stabilization of a highly regulated public sector housing benefits platform using Spring Boot and Angular.
  • Diagnosed, refactored, and optimized high-volume JCL batch jobs, successfully reducing overall batch processing time by 30%.
  • Built and optimized robust Spring Batch processes to handle massive datasets for complex stakeholder reporting.
Orange and Bronze Software Labs, Inc.
Associate Enterprise Engineer
February 2022 – June 2025

Mobile Banking System

Full-Stack Developer | August 2024 – June 2025
Tech: Java, Spring Boot, Redis, Kafka, PostgreSQL, Docker, Vue.js, Swift, AWS S3
  • Developed and fine-tuned enterprise-grade Spring Boot REST APIs, implementing strategic Redis caching layers to achieve a 50% improvement in API response times.
  • Designed asynchronous, event-driven architectures utilizing Kafka to decouple microservices and guarantee message delivery.
  • Drove feature parity across platforms, spearheading iOS development with Swift while actively maintaining core backend infrastructure.

Financial Presentation System & Work Hours Management

Full-Stack Developer | February 2023 – July 2024
Tech: Java, Spring Boot, Next.js, React, WebSockets, PostgreSQL, Stripe, AWS Cognito, Docker
  • Engineered a real-time WebSocket communication layer using StompJS and Spring Boot for live financial presentations.
  • Integrated mission-critical third-party services including Stripe for payments, AWS Cognito for secure SSO authentication, and JW Player for uninterrupted video streaming.
  • Built responsive, intuitive user interfaces in Next.js and React using Atomic Design principles for seamless data visualization.
Teevision Printing
Lead Full-Stack Developer
June 2024 – June 2025

E-Commerce Platform Modernization

https://teevisionprinting.com
Tech: Java, Spring Boot, Next.js, PostgreSQL, AWS (EC2, S3, RDS, Cognito), GitHub Workflows
  • Directed the end-to-end technical strategy and execution of a full-scale e-commerce platform using Spring Boot and Next.js.
  • Automated CI/CD release pipelines via GitHub Workflows, eliminating manual steps and slashing deployment time by one hour per cycle.
  • Optimized client-side data fetching with React Query, drastically reducing page load times by 5 seconds and improving SEO scores.

Featured Personal Project

Agricommerce Platform

Role: Full-Stack Architect | March 2025 – Present

A robust, scalable online marketplace designed for agricultural vendors to manage and distribute fresh produce inventory (fruits and vegetables).

  • Architected the system from the ground up utilizing Java, Spring Boot, Next.js, GraphQL, and gRPC for high-throughput communication.
  • Implemented a resilient, containerized microservices deployment strategy utilizing Kubernetes and GitOps principles via ArgoCD.
  • Enforced strict security protocols integrating Keycloak and NextAuth.js for localized vendor access.

Education

Ateneo de Davao University

Bachelor of Science in Computer Science

Graduated June 2024

Honors: Summa Cum Laude

Foundation in system design, distributed algorithms, and advanced object-oriented programming.