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Flag of Philippines Quezon City, Philippines
Member since June 7, 2017
4 Recommendations


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20 years architect/developer experience, with the last 3 years on containerized microservices architecture. Some of my core domains are banking, fintech, financial services, blockchains, and e-commerce. Methodologies: Clean code, cloud microservices, "The Twelve-Factor App" ([login to view URL]), serverless, ReactiveX, BFF API Pattern, API-first (Swagger/OpenAPI), Agile, TDD. Top skills: Go/Golang, gRPC, protobuf Vue, Nuxt, Quasar MicroProfile, GraalVM Micronaut, Quarkus, Microsoft Dapr Kotlin, Vert.x, TornadoFX Scala, Play!, Akka, Scalatags .NET Core/C#, Razor Pages, Ocelot, IdentityServer4 LoopBack v4, Moleculer JS ES6+ JavaScript/TypeScript, Node.js Docker, Kubernetes NoSQL: Apache Cassandra, MongoDB, Elasticsearch, Redis, Firebase LDAP: OpenDJ, OpenLDAP, AD SQL Cloud: AWS: Kubernetes, Lambda, API Gateway Microsoft Azure, AKS, Azure Functions GCP, GKE, GCP IoT Core Historical: Groovy, Grails, GSP React, Angular, Meteor Java EE, Spring Boot JHipster, CUBA Platform, Vaadin
$40 USD/hr
11 reviews
  • 100%Jobs Completed
  • 69%On Budget
  • 69%On Time
  • 6%Repeat Hire Rate


Recent Reviews


Java/Go E-commerce and Microservices Developer

May 2018 - Dec 2018 (7 months)

Multi-tenant, multi-channel e-commerce ERP+CRM system in Java EE (EJB3+) with Vaadin frontend and microservices in Go, calling them from EJBs via gRPC and protobuf. Database in PostgreSQL and hosted in JBoss/WildFly.

Contributing Blockchain/Cryptocurrency Consultant

Aug 2017 - Dec 2018 (1 year)

DApps and smart contracts developer mainly concentrating on Ardor, Nxt, Stellar, Ethereum, IPFS, Mobius, and VeChain. Also provided research studies into DApp models and ICOs.

Full-stack Java E-commerce and Microservices Architect/Developer

Jan 2017 - Jun 2017 (5 months)

Multi-channel seller integration (eBay, Amazon, etc.) software-as-a-service (SaaS) on JHipster, Spring Microservices, JHipster Registry, Angular 2, Bootstrap, Metronic admin theme, Webpack, SASS, Gradle, Apache Cassandra, Docker, Docker Compose, Docker Swarm, Akka clusters, RancherOS, and Amazon Web Services.

Java Developer

Dec 2015 - Feb 2017 (1 year)

* Lead SCIM (System for Cross-domain Identity Management) Developer. * Shibboleth SAML 2.0 IdP upgrade from v2 to v3 - upgraded Gluu’s IdP to the latest v3 version with backward compatibility to v2. * Gluu Server migration from v0.1 to v2.4.2 - Developed the migration strategy and helped the client (Toshiba) upgrade libraries and create use case unit tests in OpenID Connect and SCIM. Wrote the Groovy script that migrated the OpenDJ LDAP delta schema and data.


Bachelor of Science in Electronics and Communications Engineering

1993 - 1998 (5 years)


Certified Electronics and Communications Engineer (1998)

Professional Regulation Commission, Republic of the Philippines

Board passer, November 1998 Licensure Examination


Huawei SDP/SAG Training Manual (2012)

Manual I wrote for the two-week training I also conducted on Huawei's Service Delivery Platform (SDP) / Service Access Gateway (SAG), a Java and C++ OSGi-based framework implementing GSM (Global System for Mobile) Parlay X / OneAPI, for the biggest telco provider in the Philippines.


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