Full Stack Developer & Technical Leader — 10+ years
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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.
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Accomplishments
- Built high-performance APIs handling 300 concurrent requests per second with sub-200ms response times, processing high-volume affiliate events through event-driven architecture with AWS SQS/SNS, Redis/ElastiCache, PostgreSQL, and worker consumers.
- Rebuilt CryptoBack from Laravel/Livewire into a canonical Next.js 16 application with React 19, Drizzle ORM, PostgreSQL, Clerk, Vercel, i18n, dashboards, offer wall, referrals, payment/withdrawal flows, and automated tests.
- Built partner and tracking platforms for affiliate operations, including postback APIs, role-based dashboards, traffic reports, statement PDFs, payout callbacks, cron jobs, reconciliation workflows, and observability.
- 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.
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Experience
Full work history — every company, position, and the projects shipped inside each.
TheWorkPlace Inc.
Baguio, PH • Jun 2026 – Present
Jun 2026 – Present
Co-founder
- Co-founding a virtual office and business center for Baguio City: registered business address plus bundled setup services — registration paperwork, bookkeeping, web, and design
- Authored the feasibility study (market gap, PH regulatory basis, unit economics) and the v1 product requirements for the client portal
- Architecting the platform on Next.js 16, React 19, Drizzle, and Neon PostgreSQL with Auth.js, Vercel Blob, and Resend
tiffanydecastro.com
Baguio, PH • Nov 2025 – Present
Nov 2025 – Present
CTO and Co-founder
- Co-founded an event design business platform and built it end-to-end: public marketing site, client-facing estimator and booking flow, and a full admin back office covering inquiries, bookings, payments, contracts, calendar, and accounting
- Shipped on Next.js 16, React 19, TypeScript, Prisma 7, and PostgreSQL with Clerk auth, Vercel Blob storage, and Resend transactional email
- Established production-grade engineering practices from day one: unit tests, Playwright E2E and visual regression suites, CI checks, and containerized local infrastructure
Spike Up Media, LLC
Los Angeles, CA, USA • Nov 2024 – Present
Nov 2024 – Present
Lead Full Stack Developer
- Led full-stack delivery across CryptoBack, partners.cryptoback.club, and event-tracker platforms, translating ambiguous business requirements into production-ready systems
- Rebuilt the canonical CryptoBack product from Laravel/Livewire into a modern Next.js 16, React 19, Drizzle, PostgreSQL, Clerk, and Vercel application with tests, i18n, dashboards, payments, attribution, and deployment workflows
- Built the CryptoBack partner portal from scratch with Next.js, Auth.js, Drizzle, PostgreSQL, role-based dashboards, partner onboarding, postback APIs, reporting, statements, and payout/reconciliation workflows
- Designed and built track.bankrolls.tools as a high-volume affiliate tracking system using Next.js, PostgreSQL, Redis/ElastiCache, AWS SQS/SNS, workers, postbacks, health checks, and CI/CD automation
- Introduced Vercel and Next.js as the standard delivery stack for new projects while maintaining Laravel systems where they remained the right operational fit
Asuene Inc.
Tokyo, Japan • May 2024 – Nov 2024
May 2024 – Nov 2024
Senior Full Stack Developer
- 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, PH • Nov 2023 – May 2024
Nov 2023 – May 2024
CTO and Co-founder
- 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, USA • Apr 2022 – Nov 2023
May 2022 – Nov 2023
Head of IT
- 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
Apr 2022 – May 2022
Lead Developer
- 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, PH • Oct 2021 – Apr 2022
Nov 2021 – Apr 2022
Interim CTO
- 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
Oct 2021 – Nov 2021
Lead Developer
- 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, USA • Apr 2018 – Oct 2021
Mar 2019 – Oct 2021
Lead Developer
- 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
Jan 2019 – Mar 2019
Senior Web Developer
- 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
Apr 2018 – Jan 2019
Full Stack Web Developer
- 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 Kong • Apr 2016 – Apr 2018
Apr 2016 – Apr 2018
Web Developer
- 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
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Education
Jan 2020 – Jan 2022
MS in Information Technology (PSM Track)
University of the Cordilleras
- 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.
Jan 2011 – Jan 2015
BS in Aircraft Maintenance Technology
PATTS College of Aeronautics
- 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.
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Skills
Languages
Libraries
Bootstrap10yrsjQuery10yrsTailwind CSS8yrsAlpine.js8yrsLivewire8yrsLaravel Echo8yrsshadcn/ui2yrsPrisma2yrsDrizzle ORM2yrs
Databases
AWS
Infrastructure
Tools
Excel10yrsDocker8yrsDocker Compose8yrsGitHub Actions8yrsWebpack8yrsnpm8yrsyarn8yrsBitbucket Pipelines4yrspnpm4yrsPM22yrsSystemd2yrsExcalidraw2yrs
Practices
REST APIs10yrsOAuth210yrsJWT10yrsAgile10yrsKanban10yrsSDLC10yrsWebSockets8yrsTDD8yrsSOLID Principles8yrsScrum5yrs
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Languages
English (Fluent)Filipino (Native)German (Basic)
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