Mark Vergel Banguis

Full-Stack Developer with 5 years of experience building and maintaining production web and mobile applications. Experienced across React, TypeScript, Node.js, PostgreSQL, background processing, APIs, and distributed systems. Progressed from trainee to leading a team of 7 developers, with hands-on experience taking features and systems from development through production.

Lead Full-stack Developer at Chromelot (2023-04 – 2026-08)

• Led end-to-end development of a B2B automotive platform, establishing coding standards and coordinating development tasks for a team of 7 developers and interns.
• Built automated vehicle inventory synchronization pipelines that processed daily inventory feeds and bulk image uploads from FTP directories, supporting both scheduled and manual processing.
• Designed asynchronous background processing for recurring tasks, system notifications, and long-running workflows using BullMQ, keeping resource-intensive operations outside normal request flows.
• Reduced monthly infrastructure costs from $200+ to $100+ by migrating from DigitalOcean App Platform to a self-hosted Dokploy deployment setup on a VPS.
• Self-hosted staging and production PostgreSQL databases and implemented automated daily backups to DigitalOcean Spaces for both environments.
• Managed isolated staging and production environments across three services using Dokploy.

Full-stack Developer (Part Time) at Itemcount.io (2023-06 – 2023-09)

• Developed and enhanced features for a React Native mobile POS application as part of an early-stage startup.
• Implemented background messaging between microservices using NestJS and Pub/Sub.
• Troubleshot full-stack application issues and contributed to product planning and feature development.
• Collaborated on rapid product iterations across mobile and backend functionality.

Front-end Developer (Part Time) at Mobii Inc (2023-02 – 2023-04)

• Developed and maintained an administrative dashboard using Next.js 13, React Final Form, Chakra UI, and React Query.
• Collaborated with technical and non-technical team members to understand requirements, communicate progress, and resolve development tasks.

Full-stack Developer at Fiddle Inc (2021-11 – 2022-12)

• Developed core application features and resolved software defects for a mobile POS application supporting business operations.
• Migrated legacy JavaScript codebases to TypeScript, improving type safety and maintainability.
• Built reusable UI components with Storybook and published shared components as internal NPM packages.
• Implemented Kafka-based messaging to synchronize background transactions across services.
• Gained hands-on experience with Google Cloud Platform and Kubernetes while working on production applications.

Front-end Developer at Xendit (2021-07 – 2021-12)

• Developed frontend features using React and Xendit's internal UI component library.
• Maintained code quality by following internal testing standards and development practices.
• Collaborated with senior developers to understand and contribute to an existing production codebase.

Trainee at Cauld & Clark IT Solutions (2021-03 – 2021-07)

• Progressed from trainee to full-stack development while contributing to two client-facing production applications.
• Developed web and mobile applications using React, React Native, GraphQL, Kafka, and NestJS, with additional exposure to Go.
• Delivered production application features as a frontend developer based on client requirements.

Bachelor's in Computer Science – Surigao del Norte State University (2020 – 2024)