Portfolio

John Chamver Puno

Senior Fullstack Engineer

Philippines

Senior Fullstack Engineer with 10+ years of experience building production-grade web applications across fintech, edtech, and Web3. Specializes in JavaScript/TypeScript end-to-end, from React/Vue frontends to Node.js/NestJS backends, serverless microservices on AWS, and event-driven systems with Kafka. Active practitioner of AI-assisted development, working daily with Claude Code, Cursor, GitHub Copilot, ChatGPT, and Codex. Currently driving AI tooling adoption and automation workflows across engineering teams, achieving 95% automation utilization with human-in-the-loop oversight.

Selected Experience

Senior Software Engineer (Fullstack) at Reap

October 2025 – Present

Platform team scope – Build and ship cross-department features while resolving high-impact bugs, refactoring legacy systems, and migrating deprecated endpoints that other teams deprioritize • Full-stack feature delivery – Design and deliver production-grade features end-to-end using React.js, Node.js, and RESTful APIs, including HubSpot API integrations for automated user provisioning and bi-directional data synchronization • Serverless microservices – Architect and operate cloud-native services on AWS using Lambda, S3, SNS, SQS, EventBridge, and the Serverless Framework, with Aurora (PostgreSQL/MySQL) and TypeORM for schema migrations and query optimization; CI/CD via Git and GitHub Actions • AI tooling adoption – Drive AI and automation workflows across the organization, from product requirements documents and RFCs to code reviews, achieving 95% automation utilization with human-in-the-loop oversight • Daily AI development stack – Work across Claude Code, Cursor, VS Code + Copilot, ChatGPT, and OpenAI Codex for code generation, test scaffolding, technical documentation, and pair programming

Fullstack Engineer at Forgd

April 2025 – September 2025

Email notification overhaul – Audited and rebuilt the SendGrid notification system, eliminating redundant and duplicate emails for internal and external users and cutting duplicate sends by 90% • Admin dashboard – Built a new notification configuration component from scratch, enabling administrators to manage recipients per RFQ (request for quotation) without requiring code changes • Notification matrix – Documented the full email notification matrix for the application and deprecated obsolete notification types, making the system easier to maintain and extend • Bug reduction – Identified and resolved root causes across the stack, improving application stability and end-user reliability • Codebase cleanup – Refactored outdated components and streamlined the broader codebase, improving maintainability, scalability, and developer productivity • Test coverage – Implemented end-to-end testing with Playwright, validating critical features automatically and reducing regressions across deployments

Key Skills

  • Software Engineering
  • Web Applications
  • JavaScript
  • TypeScript
  • Agile Methodologies
  • Node.js
  • React.js
  • Vue.js
  • Microservices
  • REST APIs
  • Event-Driven Architecture
  • AI-Assisted Development

Featured Projects

Cube by SatLayer (Web3)

Frontend implementation using React and Next.js for a Bitcoin restaking platform, building responsive UIs for staking/unstaking, TVL/APY metrics display, and user position management.

SatLayer (Web3)

Built the marketing website using Framer CMS and integrated React components for real-time interactivity on a next-generation Bitcoin economic layer platform.

Odinswap / Valhalla (Web3 DeFi)

Contributed to a decentralized exchange on Bitcoin with token swaps, yield farming, and staking. Also built Valhalla, a gamified platform for launching and trading Bitcoin Runes.

Contact

Email: personal.chamver@gmail.com

GitHub: https://github.com/jcjp

GitLab: https://gitlab.com/jcjp