Paulo Silva

I’m a Senior Software Engineer focused on designing and delivering cloud-native, testable systems—especially where identity, reliability, and scalability matter. I enjoy turning complex requirements into well-structured APIs and services that teams can confidently build on.

At Certisign (Dec 2020 – Present), I architected and developed a brand new digital identity mobile product for Android. I integrated external services such as Firebase, Cloud Functions, biometric REST APIs, and SDKs, and I designed and deployed REST APIs with Docker containers on Google Cloud Platform (GCP). I also built a messenger architecture using Firebase Cloud Message and a NodeJs API via HTTP Cloud Functions.

In parallel, I created a testable Backend for Frontend (BFF) REST API using NestJs and SOLID principles to serve a Flutter mobile application, and I served as the primary technical guide for mobile development in an Agile/SCRUM environment. Before that, at Indra Company (2018 – 2020), I worked on government systems used by ~4 million citizens, including citizen search and process flows with Red Hat JBPM using Spring Boot, Java, Oracle database, Angular, and TypeScript.

Earlier, at Dock (2017 – 2018), I delivered integrations and performance-focused backend work, including webhook integration using Redis and a Java/Spring Boot master-slave architecture. I also authored plugins for high-volume processing and optimized concurrency with highly tuned Microsoft SQL Server queries—experiences that shape how I think about engineering excellence, mentorship, and sustainable delivery.