I have multiple years of senior developer and architect experience, with the last 6 years on full-stack cloud microservices architecture with Docker / Kubernetes.
I bring a solid mix of non-freelancing and freelancing experience working with multi-national teams from across the globe on both private and government sectors.
A highlight during my pre-freelancing days was leading a team that migrated a universal bank's 17-year-old Trade Finance System (a.k.a. SWIFT "MT700 - MTxxx" series) from COBOL + Oracle to Groovy Grails + IBM DB2.
I am also a Board-certified Electronics and Communications Engineer in the Philippines (PRC ECE License # xx876), and aside from software, I also have interests in hardware (gaming / server rigs, overclocking), electronics (IoT / embedded), and solar power.
I am constantly learning to innovate.
Some of my core domains:
- Fintech / financial services
- ERP / CRM
- Blockchains / cryptocurrencies
- Telecoms software engineering (GSM Parlay X / OneAPI)
I have worked on projects for Accenture, Huawei Technologies, Deutsche Bank, Morgan Stanley Asia-Pacific (Hong Kong), Banco de Oro Universal Bank, UCPB Universal Bank, PDex (Philippine Dealing & Exchange Corp.), and Bureau of Treasury of the Philippines and GSIS (gov't. financial agencies), among others.
JVM languages (Java, Kotlin, Scala, Groovy)
.NET / C#
Cloud microservices, serverless
Clean (Hexagonal) Architecture
Functional Reactive (FRP), ReactiveX: RxJava, RxGo, RxKotlin, RxJS
"The 12-Factor App"
API patterns: Gateway, BFF ("Backends for Frontends")
API-first development with OpenAPI: Swagger, NSwag
DDD / CQRS
Agile / Scrum / Kanban
Dockerfiles, Docker Compose, Docker cloud registries (Docker Hub, AWS ECR, GCP Container Registry, Azure Container Registry, MicroK8s registry), Google jib
AWS Kubernetes (EKS), GKE (GCP), AKS (Azure), Canonical MicroK8s, Helm, minikube, kubectl, Google Skaffold
AWS, Microsoft Azure, Google Cloud Platform (GCP), GCP IoT Core, Heroku
JUnit 5 (Jupiter), TestNG, Mockito, Spring Test, JBoss Arquillian, Testcontainers, testify (Go), DATA-DOG/go-sqlmock, xUnit / NUnit, Cypress, Jest, Spock, Spek, Webtau, RestAssured
Vue, Nuxt, Quasar
Angular, React / Preact
Tailwind CSS / Flowbite
JSF, PrimeFaces + OmniFaces
GSP (Groovy Server Pages)
ASP.NET Core / Razor Pages
Other top skills:
gRPC + protobuf
Spring Boot, Spring Boot Kotlin
Jakarta EE / Java EE
Play! Framework, Akka, ScalaTags
Envoy / Ocelot API Gateway, IdentityServer4
NoSQL: Apache Cassandra / ScyllaDB, MongoDB, Elasticsearch, Redis, Firebase
LDAP: OpenDJ, OpenLDAP, Active Directory
SQL: too many to mention
Bitcoin, Ethereum, Stellar, Ardor / NXT, IPFS
GitHub, GitLab, Bitbucket, Jira, Trello, Redmine, Mercurial
Valentino did well and provided an application that performed AI tasks as we specified. However, his level of experience with more complicated AI and ML was not enough to be able to get us all the way where we need to be at this point.
We where looking for an Middleware for an existing protect with Golang. Valentino understood very fast our requirements and delivered an excellent, easy to read and good documented code. He is very professional and has excellent communication skills. We would definitely hire him again.
Multi-tenant, multi-channel e-commerce ERP+CRM system in Java EE (EJB v3.0+) with Vaadin frontend and microservices in Go.
The Go microservices are called via gRPC + protobuf by EJBs. Database in PostgreSQL and hosted in JBoss / WildFly.
Blockchain / Cryptocurrency Consultant
QuantaLoop Technologies (USA)
Aug. 2017 - Dez. 2018 (1 Jahr, 4 Monate)
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
Bachelor of Science in Electronics and Communications Engineering
University of Santo Tomas,
Philippines 1993 - 1998
Board-Certified / Licensed Electronics and Communications Engineer
Professional Regulation Commission, Republic of the Philippines
Board passer, November 1998 ECE Licensure Examination
Huawei SDP / SAG Developer Manual (2012)
Huawei Technologies Philippines, Inc.
Manual handbook I wrote for the two-week training where I was also the instructor, for developing applications using Huawei's Service Delivery Platform (SDP) / Service Access Gateway (SAG), a Java EE and C++ OSGi-based framework implementing GSM (Global System for Mobile) Parlay X / OneAPI, for the biggest telco in the Philippines.
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