Mike Castro

CV

World-Class Full Stack Developer & Technical Leader with 10+ years of experience

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Summary

Full Stack Developer with 10+ years of experience and CTO background. Proven track record building high-performance systems (300+ req/s, sub-200ms), leading teams of up to 12 developers, and achieving PCI DSS/BSP compliance in fintech. Known for transforming complex business requirements into production-ready systems across fintech, enterprise SaaS, and consumer platforms.

Significant Accomplishments

  • Built high-performance APIs handling 300 concurrent requests per second with sub-200ms response times, processing tens of thousands of events daily using event-driven architecture with AWS SQS and SNS, executing 100+ zero-downtime deployments.
  • Led engineering teams of up to 12 developers, hiring and training 4-6 developers, and achieving PCI DSS and BSP regulatory compliance in fintech.
  • Developed GHG Scope 1/2/3 emission tracking, AI/OCR receipt categorization, and PM workflow automations for enterprise environmental compliance SaaS serving dozens of Japanese corporations.
  • Revived abandoned platforms (doubling traffic post-relaunch), fixed critical production bugs causing revenue loss, and modernized legacy systems from Laravel 4.2 to 10.
  • Managed 74 Shopify stores and 10,000+ SKUs, building CLI tooling that saved days of manual work per operation.
  • Deployed and managed cloud infrastructure across AWS and DigitalOcean, integrating automated testing, containerized environments, and CI/CD pipelines.

Work Experience

Spike Up Media, LLC

Los Angeles, CA, USANov 2024 Present

Lead Full Stack Developer

Nov 2024Present

  • Led all project management efforts including estimation, technical scoping, business requirement alignment, stakeholder communication, and documentation
  • Introduced Vercel as the deployment standard, enabling PR preview deployments that catch issues before merge
  • Championed Next.js adoption across new projects, standardizing the frontend stack for faster development
  • Architected and sold AWS event-driven infrastructure (ElastiCache, SNS, SQS with DLQs) using Excalidraw diagrams to align technical vision with stakeholders
  • Built robust CI/CD pipeline with automated backups and rollback mechanisms, modeled after Laravel Forge patterns

Asuene Inc.

Tokyo, JapanMay 2024 Nov 2024

Senior Full Stack Developer

May 2024Nov 2024

  • Spearheaded PM workflow enhancements by replicating Jira-like automations in Notion, implementing custom workflow automations, and setting up sprint/kanban boards with standardized templates for feature requests, bug reports, and sprint planning
  • Created bash tooling for selective linting and testing on the large codebase, reducing feedback loop time for developers
  • Advocated for and secured company Postman account during retros, improving API collaboration across the team

tsikot.com Inc.

Baguio, Benguet, PHNov 2023 May 2024

CTO and Co-founder

Nov 2023May 2024

  • Led product direction by analyzing behavioral data, conducting user interviews, and influencing the roadmap
  • Hired 2 developers and served as de facto HR, building the technical team from scratch
  • Secured $10,000 AWS credits through AWS Activate partnership, reducing infrastructure costs during relaunch
  • Tripled platform traffic from 200k to 600k daily visitors post-relaunch

Xawnatech

Minneapolis, MN, USAApr 2022 Nov 2023

Head of IT

May 2022Nov 2023

  • Introduced Vercel for frontend deployment, enabling preview deployments that streamlined stakeholder feedback loops
  • Led development team while translating stakeholder requirements into prioritized, actionable tasks
  • Architected secure communication between Vercel frontend and EC2 backend infrastructure

Lead Developer

Apr 2022May 2022

  • Converted a conceptual product idea into actionable technical specifications, creating SDLC documentation, ERD, and use case diagrams from scratch
  • Championed and secured stakeholder buy-in for Laravel + React + React Native stack over competing alternatives through prototype demonstrations
  • Established TDD practices with 80%+ code coverage and taught the CTO to contribute to the backend codebase

Lindytech Inc.

Makati, NCR, PHOct 2021 Apr 2022

Interim CTO

Nov 2021Apr 2022

  • Coordinated across compliance, product, operations, and customer support departments
  • Hired developers and engaged penetration testers to strengthen the engineering and security teams
  • Implemented CI/CD pipeline with Cypress E2E testing, reducing QA and UAT cycles and boosting team deployment confidence

Lead Developer

Oct 2021Nov 2021

  • Onboarded rapidly and delivered first PR within 48 hours of joining
  • Identified leadership gap and proactively assumed CTO responsibilities, later negotiating formal role transition
  • Established coding standards and began cross-departmental coordination to align engineering with business needs

Casting Calls America LLC

Roseville, CA, USAApr 2018 Oct 2021

Lead Developer

Mar 2019Oct 2021

  • Hired and trained 4-6 developers over tenure, leading onboarding sessions on the tech stack, best practices, and architecture patterns
  • Took charge of project management responsibilities, including timeline estimation, task delegation, and cross-functional coordination with stakeholders
  • Served as intermediary between developers and stakeholders, converting business needs into technical specifications and prioritizing tasks
  • Participated in compensation discussions and team structuring during periods of organizational growth and contraction
  • Authored and maintained development documentation and engineering best practices across the team

Senior Web Developer

Jan 2019Mar 2019

  • Led the hiring and training of a diverse development team
  • Introduced Paratest company-wide, reducing CI feedback loops from minutes to seconds
  • Established linting, coding standards, and best practices documentation for the engineering team

Full Stack Web Developer

Apr 2018Jan 2019

  • Advocated for and implemented Laravel Shift, adding comprehensive test coverage to ensure safe framework upgrades
  • Volunteered to take on developer management responsibilities, enrolling in Master's program to strengthen leadership skills
  • Negotiated flexible work schedules enabling PH developers to work local hours while maintaining California-time stakeholder communication as the intermediary

Milkyway Distribution Ltd.

Kowloon, Hong KongApr 2016 Apr 2018

Web Developer

Apr 2016Apr 2018

  • Transitioned from data-entry role by automating product listings with Excel VBA, reducing an 8-hour daily task to 20 minutes and earning promotion to IT department
  • Built company-wide translation system enabling international market expansion across multiple regions
  • Improved data-entry team efficiency by replacing manual text input with dropdown interfaces and training staff on product photography standards

Education

MS in Information Technology (PSM Track)

University of the Cordilleras

Jan 2020Jan 2022

  • Led multiple graduate-level research initiatives, including topics in Human Behavior in Organizations, Supply Chain Management, IT Security, and Advanced Information Management.
  • Developed a time-series product demand predictor using an LSTM neural network.
  • Designed and built a scalable Internet of Things (IoT) solution integrated with an online monitoring dashboard.
  • Produced a working prototype using the Design Thinking methodology, focusing on practical innovation.
  • Authored a capstone on IT Innovation and Emerging Technologies, emphasizing real-world applications in tech advancement.

BS in Aircraft Maintenance Technology

PATTS College of Aeronautics

Jan 2011Jan 2015

  • Founder & President, Basic-Engineering Pioneers of Innovative Construction.
  • Technical Head, Alliance of Aircraft Mechanics and Troubleshooters.
  • Elected Student Government Representative, Basic Engineering.
  • Academic scholar throughout the program.
  • Built CRUD systems for automating aircraft reports and school event forms.

Skills

Languages

JavaScript10yrsPHP10yrsSQL10yrsVBA10yrsPython8yrsC++8yrsShell8yrsTypeScript5yrs

Frameworks

Laravel10yrsNode.js10yrsVue.js8yrsDjango8yrsReact5yrsNext.js2yrs

Testing

Databases

AWS

EC28yrsS38yrsSQS8yrsSNS8yrsElastiCache8yrsRDS8yrsCloudWatch8yrsCloudFront8yrsRoute538yrsIAM8yrs

Infrastructure

Services

Practices

REST APIs10yrsOAuth210yrsJWT10yrsAgile10yrsKanban10yrsSDLC10yrsWebSockets8yrsTDD8yrsSOLID Principles8yrsScrum5yrs

Languages

English (Fluent)Filipino (Native)German (Basic)

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