Open to opportunities

Sergio Linares Peralta

@sergiolinaresperalta

Message

Senior Software Engineer and Tech Lead building resilient event-driven .NET microservices for SaaS platforms.

Spain

Message

What I'm looking for

I’m looking to lead backend engineering on high-availability SaaS platforms—owning architecture end-to-end, shipping event-driven services, and building world-class observability with OpenTelemetry on Kubernetes.

I’m a Senior Software Engineer / Tech Lead with 12+ years building production SaaS-style platforms, focused on high availability, resilience, and continuous evolution. At Maersk, I currently lead FinOps backend services, delivering a scalable, multi-service invoicing platform for enterprise logistics customers.

Day to day, I work on event-driven .NET microservices running on Kubernetes (AKS), with end-to-end observability using OpenTelemetry and Grafana (Loki, Prometheus, Tempo). I directly own customer-facing systems and the technical decisions needed to align engineering outcomes with business needs.

I’ve led major initiatives like a multi-tenant ingestion and eventing flow (CarrierCostProcessor) and a generic FinOps event-processing platform (Crucible) using layered architecture, CQRS, EF Core migrations, and Kafka-based pipelines with full event lineage. I also modernised CI/CD and drove migrations to Kubernetes, while maintaining a strong quality bar through unit, integration, and E2E testing.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Maersk

Nov 2021 - Present (4 years 7 months)

Led development of a scalable, multi-service FinOps invoicing platform powering enterprise logistics customers. Built event-driven .NET microservices on AKS using Azure Service Bus and Kafka with the Outbox pattern, and owned end-to-end observability with OpenTelemetry and Grafana.

C++Microservices Azure Service Bus Kafka AKS OpenTelemetry Grafana

Senior Web Developer

Babel Sistemas de Información

Feb 2019 - Nov 2021 (2 years 9 months)

Developed and integrated web applications across e-commerce and healthcare domains, including custom REST APIs and CMS-based solutions. Delivered functionality using PHP/JavaScript with Symfony, Prestashop, WordPress, ElasticSearch, and eCommerce integrations.

PHP JavaScript Symfony PrestaShop WordPress REST APIs Elasticsearch E commerce integration API Integration

Web Developer

Voilá Productora

Jan 2013 - Jan 2019 (6 years)

Built and maintained web and interactive products, including proprietary CMS platforms and a Google Maps routing application. Developed multimedia content managers and contributed to a VR interactive game using Unity (.NET) alongside web technologies.