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Backend Developer @ Crescendo Collective
Full-Stack Software Engineer

Viver Val P. Bungag

I design cloud-native systems that stay fast, observable, and calm under real-world load.

4+ yrs
Enterprise engineering
76%
Faster systems
Summa Cum Laude
Computer Science
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4+

Years building enterprise systems

76%

Faster data-export queries

50%

Improvement in API response time

30%

Reduction in batch runtime

12%

Lower AWS infrastructure cost

1hr

Saved on every deployment

01About

I build cloud-native systems teams can rely on.

I'm a full-stack software engineer based in Davao City, Philippines, with more than four years designing, scaling, and maintaining cloud-native enterprise systems — the kind that have to stay fast and reliable while handling real production load.

My home turf is Java and Spring Boot on the backend, paired with React and Next.js on the front. I've shipped across banking, aerospace, public-sector, and e-commerce domains, and I care most about the unglamorous things that make software durable: clean architecture, performance, and observability.

I graduated Summa Cum Laude in Computer Science from Ateneo de Davao University. I like taking tangled legacy code and turning it into systems teams actually enjoy operating — shaving seconds off queries, decoupling services with events, and making failure modes visible before they page someone at 3am.

Viver Val P. Bungag

Davao City, Philippines

Experience
4+ years
Education
Summa Cum Laude, CS
Currently
Crescendo Collective
Core stack
Java · Spring · AWS · Next.js

Backend & Architecture

Java, Spring Boot, and microservices designed to scale cleanly and stay maintainable.

Cloud & Delivery

AWS, Docker, Kubernetes, and CI/CD pipelines that ship safely and often.

Performance & Observability

Query tuning, caching, and Grafana/Loki so systems stay fast and debuggable.

02Experience

Where I've shipped

Four years across banking, aerospace, public-sector, and e-commerce — building and modernizing systems end to end.

  1. Crescendo Collective

    Feb 2026 — Present

    Full-Stack Software Engineer

    Modernizing connectivity, compliance, and SEO platforms for aerospace and enterprise clients.

    • Led the end-to-end modernization of legacy services — migrating the backend to Java 25 and the frontend to Next.js — lifting maintainability and team velocity.
    • Cut data-export query time by 76% (17s → 4s) using database projections, streaming responses, and read-only transactions.
    • Reduced AWS infrastructure spend by 12% through architecture reviews and strategic resource right-sizing.
    • Established centralized observability with Grafana, Loki, and Promtail, sharply reducing mean-time-to-resolution on distributed incidents.
    JavaSpring BootQuarkusNext.jsGraphQLPostgreSQLAWSTerraformGrafana / Loki

  2. Accenture Inc.

    Jun 2025 — Dec 2025

    Analyst Programmer

    Stabilizing a highly regulated public-sector housing-benefits platform.

    • Delivered and stabilized full-stack features for a regulated housing-benefits system built on Spring Boot and Angular.
    • Diagnosed and refactored high-volume JCL batch jobs, reducing overall batch processing time by 30%.
    • Engineered robust Spring Batch pipelines to handle massive datasets for complex stakeholder reporting.
    JavaSpring BootSpring BatchAngularTypeScriptDB2 SQLAzure DevOps

  3. Teevision Printing

    Jun 2024 — Jun 2025

    Lead Full-Stack Developer

    Owning the end-to-end modernization of a production e-commerce platform.

    teevisionprinting.com
    • Directed the technical strategy and execution of a full-scale e-commerce platform on Spring Boot and Next.js.
    • Automated CI/CD release pipelines with GitHub Workflows, eliminating manual steps and saving an hour per deployment.
    • Optimized client-side data fetching with React Query, cutting page load times by ~5 seconds and improving SEO scores.
    JavaSpring BootNext.jsPostgreSQLAWSGitHub Actions

  4. Orange and Bronze Software Labs, Inc.

    Feb 2022 — Jun 2025

    Associate Enterprise Engineer

    Enterprise banking and fintech systems, from REST APIs to real-time UIs.

    • Tuned enterprise Spring Boot REST APIs with strategic Redis caching, achieving a 50% improvement in response times on a mobile banking platform.
    • Designed asynchronous, event-driven architecture with Kafka to decouple microservices and guarantee message delivery.
    • Built a real-time WebSocket layer (StompJS + Spring Boot) for live financial presentations, integrating Stripe, AWS Cognito SSO, and JW Player.
    • Drove cross-platform feature parity, shipping iOS features in Swift alongside core backend work.
    JavaSpring BootRedisKafkaPostgreSQLVue.jsNext.jsWebSocketsSwift
03Selected Work

Things I've built

A selection of platforms and systems — from enterprise engagements to personal R&D — chosen for range and real-world impact.

Astronautics · Crescendo Collective

Featured

Connectivity Management Platform

Aerospace connectivity, re-platformed.

A legacy aerospace connectivity system rebuilt as a modern, observable, cloud-native stack with GraphQL between a distributed front and back end.

  • 76% faster data exports via projections, streaming, and read-only transactions
  • 12% lower AWS spend through architecture review and right-sizing
  • Centralized observability cut incident MTTR significantly
Java 25Spring BootNext.jsGraphQLPostgreSQLAWSTerraformGrafana / Loki

Personal Project · Full-Stack Architect

Featured

Agricommerce Platform

A cloud-native marketplace for fresh produce.

A scalable online marketplace that lets agricultural vendors manage and distribute fresh produce inventory — architected from the ground up for high-throughput, secure, multi-vendor commerce.

  • Resilient containerized microservices on Kubernetes with GitOps via ArgoCD
  • High-throughput service communication over GraphQL and gRPC
  • Localized vendor access secured with Keycloak and NextAuth.js
JavaSpring BootNext.jsGraphQLgRPCKubernetesArgoCDKeycloak

Orange and Bronze Software Labs

Mobile Banking System

Low-latency banking APIs at scale.

Enterprise-grade banking services with a strategic caching layer and an event-driven backbone, delivered across web and iOS.

  • 50% improvement in API response times with Redis caching
  • Kafka-based event-driven architecture guaranteeing message delivery
  • Cross-platform parity with native iOS features in Swift
JavaSpring BootRedisKafkaPostgreSQLVue.jsSwift

SEO Agent · Crescendo Collective

Automated SEO & Performance Analysis

AI-driven crawling and optimization.

Backend services that crawl sites concurrently, extract metadata, and turn raw signals into AI-generated, actionable optimization recommendations.

  • Concurrent crawling and metadata extraction at scale
  • OpenAI + Google PageSpeed APIs for actionable recommendations
  • Higher throughput via async processing and containerized deploys
JavaSpring BootPlaywrightOpenAI APIGoogle PageSpeedDocker

Orange and Bronze Software Labs

Real-Time Financial Presentations

Live data, payments, and streaming in one app.

A real-time platform for live financial presentations with synchronized data, secure payments, single sign-on, and uninterrupted video streaming.

  • Real-time WebSocket layer with StompJS and Spring Boot
  • Stripe payments, AWS Cognito SSO, and JW Player streaming
  • Atomic-Design UIs in Next.js & React for clean data visualization
JavaSpring BootNext.jsWebSocketsStripeAWS Cognito

Teevision Printing

E-Commerce Platform Modernization

Faster store, automated releases.

End-to-end modernization of a production e-commerce store, with automated delivery and a measurable lift in performance and SEO.

  • CI/CD via GitHub Workflows saving an hour per deployment
  • ~5s faster page loads through React Query data fetching
  • Improved SEO scores and a smoother storefront experience
JavaSpring BootNext.jsPostgreSQLAWSGitHub Actions
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04Capabilities

The toolbox

Grouped by where each tool lives in the stack — not an exhaustive dump, just what I reach for most.

Backend & APIs

Service design, contracts, and the layer that has to never go down.

  • Java
  • Spring Boot
  • Quarkus
  • Microservices
  • REST API Design
  • GraphQL
  • gRPC
  • WebSockets
  • Spring Batch

Frontend

Interfaces that stay fast, accessible, and pleasant to maintain.

  • React
  • Next.js
  • Vue.js
  • Angular
  • TypeScript
  • JavaScript
  • Tailwind CSS
  • Shadcn UI
  • React Query

Cloud & DevOps

Shipping to AWS with infrastructure as code and automated delivery.

  • AWS
  • Docker
  • Kubernetes
  • Terraform
  • ArgoCD (GitOps)
  • GitHub Actions
  • Azure DevOps
  • CI/CD
  • LocalStack

Data & Messaging

Storage, caching, and event streams tuned for throughput.

  • PostgreSQL
  • DB2
  • Redis
  • Apache Kafka
  • Liquibase
  • Flyway

AI & Automation

Pragmatic AI in the loop — for product features and developer velocity.

  • OpenAI API
  • GPT Codex
  • Google PageSpeed API
  • Playwright
  • AI-assisted Development

Security, Observability & Tooling

Auth, monitoring, and the practices that keep delivery healthy.

  • Keycloak
  • OAuth / NextAuth
  • Spring Security
  • Grafana
  • Loki & Promtail
  • SonarQube
  • TDD
  • Git
05Background

Education & recognition

Where the fundamentals come from, and a few results I'm proud of.

Ateneo de Davao University

B.S. in Computer Science

Graduated June 2024

Summa Cum Laude

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

Summa Cum Laude

Top academic distinction in Computer Science, Ateneo de Davao University.

76% Query Optimization

Re-engineered data-export pipelines from 17 seconds down to 4 seconds.

Cross-Domain Delivery

Shipped production systems across banking, aerospace, public sector, and e-commerce.

Modernization Lead

Drove legacy-to-cloud-native migrations spanning Java 25, Next.js, and AWS.

06Contact

Let's build something.

Have a role, a project, or just want to talk shop about distributed systems? The fastest way to reach me is email — I read every message.

Email meDownload résumé

Based in Davao City, Philippines · open to remote.

Email

viverbungag1@gmail.com

GitHub

github.com/viverbungag

LinkedIn

linkedin.com/in/viver-bungag

Location

Davao City, Philippines