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// work

17 years in technology, 11 building software

Ordered by what's most relevant to a contract engagement rather than strictly by date. The CTO role overlaps the current one because it did.

  1. Senior .NET Engineer / Software Architect

    Aug 2022 — Present

    Velosi Philippines, Inc.

    Current engagement. Event-driven microservices at enterprise scale, including SWIFT and SAP traffic — the high-assurance end of integration work.

    • Design and deliver event-driven microservices in .NET, with quality gates enforced through xUnit and SonarQube rather than good intentions
    • Wire Kafka topics between teams that do not share a database, so services stay decoupled at the data layer
    • Own infrastructure as code in Terraform across Lambda, ElastiCache, and Kubernetes, deployed through Buildkite
    • Instrument systems in Datadog and CloudTrail so failures surface before support tickets do
    • Review code and mentor junior to mid-level engineers; reduce key-person risk by documenting and automating
    • .NET 6-10
    • Kafka
    • Terraform
    • Kubernetes
    • AWS Lambda
    • Datadog
    • SWIFT
    • SAP
    • React / Next.js

  2. CTO / Lead Developer

    Aug 2022 — Jan 2024

    Zaige Technologies ↗

    Owned technical direction for a product end to end, reporting to a CEO and dealing directly with merchants. The closest analogue to a fractional lead engagement.

    • Architected and delivered a loyalty and marketing platform from first commit to production
    • Integrated ManyChat, Make, Wix, SMS and email gateways, Google services, and OpenAI behind one coherent API
    • Ran deployments across both AWS (EC2, Lambda, S3, RDS) and Azure (SQL Database, App Service)
    • Migrated the interface off a CMS (Wix) onto Flutter for web and mobile without stopping delivery
    • Led the SCRUM team and handled technical conversations with the CEO, partners, and merchants directly
    • C# .NET 6–8
    • MS SQL
    • Flutter
    • AWS
    • Azure
    • OpenAI
    • ManyChat
    • Make

  3. Software Development Engineer

    Jun 2021 — Aug 2022

    FPT Software Philippines Corp.

    Delivery inside a large outsourcing consultancy — the exact environment most subcontracting engagements run in.

    • Built and maintained client web applications on ASP.NET 6, ReactJS, PostgreSQL, and MartenDB
    • Delivered Web APIs, REST APIs, and microservices with unit tests and CI/CD workflows
    • Wrote technical spikes and documentation to de-risk future implementations
    • Consulted for junior and mid-level developers on an internal tool using the repository pattern
    • ASP.NET 6
    • ReactJS
    • PostgreSQL
    • MartenDB
    • AngularJS

  4. Backend Web Developer (ERP) / Assistant Technical Lead

    May 2019 — Jul 2021

    Cody Web Development Inc.

    Legacy modernisation and team coordination — inheriting ASP Classic and moving it forward without a big-bang rewrite.

    • Maintained and extended client systems spanning ASP Classic through to ASP.NET Core Web API and React
    • Built internal developer tooling in .NET Windows Forms and internal apps in Laravel and WordPress
    • Reviewed engineers' implementations, coordinated work, and assigned tasks
    • ASP Classic
    • ASP.NET Core
    • React
    • MS SQL
    • Laravel

  5. Solution Engineer

    Jan 2017 — May 2019

    TecSurge Pte. Ltd

    Automating specialist engineering software — domain-heavy work where the constraint is the domain, not the code.

    • Developed custom Hangers & Supports tooling in VB.NET and C#.NET
    • Automated plant design tasks and troubleshot issues across Smart3D and Everything3D
    • Ran Smart3D administration: database maintenance, integrity checking, backup and restore
    • VB.NET
    • C#.NET
    • Smart3D

  6. DMS Application Specialist · SP3D Administrator · Web Development

    Aug 2014 — Jan 2017

    Fluor Corporation

    Where the software career started: data migration, application administration, and internal web tooling for a global engineering firm.

    • Migrated triggers, reports, and stored procedures from Oracle to SQL Server
    • Configured and administered the project Document Management System, including user access control
    • Built internal web utilities: department portal, issues log, and project portal
    • Executed SP3D administration — project setup, database integrity, backups, and reporting
    • Oracle
    • MS SQL
    • Web development

  7. Technical / Customer Support Representative

    Jul 2009 — Aug 2014

    Convergys Philippines Inc.

    Five years diagnosing other people's systems under time pressure. It is where the debugging instinct came from.

    • Supported an ISP's customers on connectivity, access, and software faults

// stack

Everything, grouped like a runbook

What I build, organised by what it does rather than by how it looked on a job description.

svc/backendcore

Backend

Service layer, business logic, contract-first APIs.

  • C# .NET 6 / 7 / 8 / 9 / 10
  • ASP.NET Core
  • Entity Framework 6
  • Python
  • FastAPI
  • Laravel / PHP
  • xUnit / Moq
  • SonarQube
svc/integrationcore

Integration

Third-party APIs, webhooks, and the failure handling they require.

  • REST / contract-first design
  • Webhooks & idempotency
  • OAuth 2.0
  • SWIFT
  • SAP
  • Shopify / Loyverse / Paymongo
  • OpenAI / Google APIs
svc/eventingcore

Event-Driven

Async messaging backbone between services that share no database.

  • Apache Kafka
  • Event-driven architecture
  • Microservices
svc/datacore

Data

Relational, document, and key-value stores, tuned for read/write mix.

  • MS SQL Server
  • PostgreSQL / Supabase
  • MySQL
  • Amazon DynamoDB
  • MartenDB
  • Firebase
  • Oracle → SQL migration
svc/cloudcore

Cloud

Both major clouds, on-premise when the client's constraints demand it.

  • AWS: Lambda, EC2, S3, RDS, ElastiCache
  • Azure: App Service, SQL Database, APIM
  • On-premise deployment
svc/deployactive

Delivery

Pipelines and infra-as-code shipping to production without drama.

  • Buildkite CI/CD
  • Terraform
  • Kubernetes
  • Docker
  • WSL
  • Cloudflare Pages
  • Vercel
svc/observabilityactive

Observability

Tracing and monitoring that surface failures before support does.

  • Datadog
  • AWS CloudTrail
svc/frontendactive

Frontend

Client applications consuming the service layer.

  • React / Next.js
  • TypeScript
  • Flutter (web & mobile)
  • Vue / Nuxt
  • Telerik / Kendo UI
  • Material UI
svc/legacystable

Legacy & Modernisation

Inherited systems moved forward without a big-bang rewrite.

  • ASP Classic
  • VB.NET
  • Windows Forms
  • WordPress
  • jQuery

// education

B.S. Physics, with emphasis on Computer Applications

Silliman University, Dumaguete City, Philippines

2005–2009

  • DOST Scholarship (2005–2009)
  • Dean's Lister (2006–2009)
  • University Honor (2009)
  • SU Portal Scholarship (2005–2007)

// languages

  • English
  • Filipino
  • Cebuano
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