Vergílio Loureiro

Led a multi-disciplinary team on business-critical services. Owned architecture and technical guidance; oversaw integration across API, web and mobile; guided development of CI/CD pipelines and infrastructure as code; set priorities with Product to hit deadlines. Delivered database improvements that significantly raised performance and ended a run of incidents; standardised code and pipeline policies adopted company-wide; led migration of databases and services to cloud. Stack: latest .NET, AWS, GCP, Terraform.

Backend engineer on the financial-transactions platform; designed and shipped features against high-stakes correctness and reliability requirements.

• • Improved reliability of a business-critical service by introducing standardised retry and resilience patterns.

• • Identified and proposed a fix for a storage issue that would have made disaster-recovery times unacceptable.

• • Mentored team colleagues; drove cross-cutting design decisions and service-level architecture.

Stack: .NET Core 2.1 / 3.1, .NET Standard 2.0, SQL Server, MongoDB, Kafka, Docker, Kubernetes, Logz.io

Led a squad of 4 (engineers and automation QAs) on telematics and vehicle-tracking systems handling ~5k messages/sec.

• • Designed and implemented changes that reduced per-transaction time by 75% in a service handling ~1,000 req/sec.

• • Drastically reduced high-impact incidents in core business services through targeted refactoring and SLO work.

• • Led legacy decomposition and modernisation, including migration to AWS (ECS, Lambda, CloudWatch).

• • Defined and tracked engineering KPIs; established code, performance, and IPC standards adopted across the squad.

• • Owned root-cause analysis on cross-team incidents; rebuilt the team's automation test estate.

Stack: .NET Framework / Core / Standard, ASP.NET Core, AWS (ECS, Lambda, CloudWatch), RabbitMQ, SQL Server, ELK, AppDynamics