Senior Software Engineer @ Fever

Fernando Astorga Cobos

Backend engineer passionate about building scalable systems, clean architecture, and high-availability services. Turning complex problems into elegant, robust solutions.

About Me

A little about who I am

I'm a Backend Engineer passionate about learning new technologies, architecture patterns, and DevOps practices. I specialize in building high-availability systems that can support millions of users worldwide.

I hold a Bachelor's degree in Computer Engineering from the University of Málaga, with a specialization in Information Systems. I'm committed to clean code, clean architecture, and Domain-Driven Design principles.

50+

APIs Built

1000s

Requests/sec Handled

Coffees Drunk

Career Journey

Where I've been building

Senior Software Engineer

Fever

Current

Building the future of live entertainment experiences with Python. Developing core functionality to expand partner acquisition and working on scalable systems that power millions of users discovering and booking events worldwide.

PythonPartner AcquisitionHigh AvailabilityGlobal Scale

Backend Engineer

Seedtag

Contributed to the product core, developing new features and architecting real-time analytics services. Built Express microservices handling thousands of requests per second. Managed event streams with Kafka, established monitoring with Prometheus and Grafana, and mentored the engineering team.

MicroservicesKafkaPrometheusGrafanaMentoring

Junior Backend Developer

sync.

Contributed to migrating a legacy Java 8 monolith to a modern Event-Driven Architecture using AWS Lambda. Developed APIs with serverless technologies, applied DDD principles, and built microservices with Java and Spring Boot.

AWS LambdaSpring BootDDDTypeScriptJava

Problem Solving

Challenges I overcame

Seedtag — Real-Time Analytics
Problem

The business required a real-time analytics service where accurate data from multiple third-party sources was critical. Complex business logic depended on live data aggregation, and any delays or inconsistencies would directly impact decision-making and revenue.

Solution

Architected and built a real-time analytics pipeline integrating multiple third-party data sources. Implemented event-driven processing with Kafka, designed resilient data fetching mechanisms with fallbacks, and created Express microservices with horizontal scaling. Established comprehensive monitoring with Prometheus and Grafana for full observability.

Impact:Delivered accurate real-time analytics reducing data latency by 60%, enabled data-driven business decisions, and the platform scaled to handle 3x more traffic with the same infrastructure.
Seedtag — Technical Leadership
Problem

Knowledge gaps across the engineering team in modern infrastructure and backend technologies were slowing down development velocity and architectural decisions.

Solution

Took ownership of technical mentoring across frontend, backend, and systems engineering. Designed and delivered hands-on workshops covering Kubernetes orchestration, Terraform infrastructure-as-code, and backend service patterns. Created internal documentation and best practices guides.

Impact:Elevated team capabilities, reduced onboarding time for new engineers, and established a culture of continuous learning that improved overall code quality and deployment confidence.
sync.
Problem

Legacy monolithic architecture built on Java 8 with deprecated patterns was accumulating technical debt. The tightly coupled codebase made it difficult to add features, scale individual components, or deploy updates safely.

Solution

Participated in migrating the monolith to a modern Event-Driven Architecture using AWS Lambda. Helped refactor services into independent, event-driven microservices with TypeScript and Spring Boot. Contributed to implementing Domain-Driven Design principles, testing strategies, and CI/CD pipelines.

Impact:Deployment frequency improved from monthly to daily releases, bug rate decreased by 70%, and services could scale independently. The new architecture significantly improved developer productivity and system maintainability.

Tech Stack

Tools of the trade

Languages

TypeScriptJavaScriptPythonJavaScalaSQL

Backend & Frameworks

Spring BootExpressNode.jsDjangoFlaskMicroservicesREST APIs

Cloud & DevOps

AWSGCPDockerKubernetesServerless

Data & Monitoring

KafkaPrometheusGrafanaPostgreSQLEvent Processing

Architecture

Clean ArchitectureDDDSOLIDEvent-DrivenHigh Availability

Practices

Clean CodeTechnical DocumentationTestingCI/CDAgileAI Tools

Get in Touch

Let's connect

Interested in working together or just want to chat about backend architecture? I'd love to hear from you.

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