Available for new opportunities

Hi, I'm Giselle Lago

Senior Software Engineer with 6+ years building scalable .NET microservices, event-driven Azure architectures, and React frontends. Exploring LLM-based agentic workflows to accelerate product development. Based in Zürich, Switzerland.

LinkedIn GitHub Email
About Me
Background

Senior Software Engineer from Havana, Cuba, now based in Zürich, Switzerland. I specialize in building scalable backend systems with .NET and designing event-driven microservices architectures on Azure.

My experience spans from migrating enterprise monoliths to cloud-native microservices, to building internal tools that improve team productivity, and more recently to leveraging LLMs and agentic workflows to accelerate product development. I'm passionate about clean architecture, high test coverage, and reliable software delivery.

Currently advancing my React skills with a Meta Advanced React certification and continuing to develop my German proficiency toward B2 level.

Location
Zürich, Switzerland
Education
BS Software Engineering — Technological University of Havana
Languages
Spanish · English · Deutsch · French
Work Authorization
Swiss B Permit · EU Citizen
Experience
Professional Journey
January 2025 — Present
Independent Software Developer (.NET / React / AI)
Zurich, Switzerland
  • Delivered web solutions and integrations for small business clients, translating requirements into functional applications and connected services
  • Designed and developed full-stack applications using React, including e-commerce platforms with authentication, payment, and administrative capabilities
  • Leveraged LLMs and agent-based workflows (Claude, GPT, Hermes, GLM) to accelerate software development and automate engineering tasks
  • Continuing professional development through advanced React training while advancing German proficiency toward B2 level
June 2024 — December 2024
.NET Software Engineer
Sulzer Ltd — Zürich, Switzerland
  • Improved system performance by 20% through bug fixes, performance optimizations, and increased automated test coverage
  • Designed and maintained Azure DevOps CI/CD pipelines, improving deployment reliability across a microservices-based architecture
  • Implemented event-driven integrations with Apache Kafka, developing producers and consumers to support scalable, asynchronous workflows
  • Developed and maintained microservices, delivering new features while ensuring backward compatibility with legacy systems
  • Conducted code reviews and contributed to testing initiatives to maintain high standards of code quality
August 2020 — May 2024
.NET Software Engineer
OMP — Barcelona, Spain
  • Implemented event-driven architectures using RabbitMQ and MassTransit, developing publishers and consumers for asynchronous inter-service communication
  • Contributed to the migration of a core product from a monolithic architecture to microservices, improving maintainability, testability, and feature delivery speed
  • Built critical components of an internal load testing platform adopted by multiple teams to validate application scalability and performance
  • Led Azure cloud migrations using Azure Functions, Durable Functions, Event Hubs, and Key Vault to coordinate complex serverless workflows
  • Mentored engineers, conducted code reviews, and promoted .NET best practices and coding standards across teams
December 2019 — March 2020
.NET Software Engineer
Vueling Airlines — Barcelona, Spain
  • Developed and maintained ASP.NET web applications for scalability and security
  • Designed and optimized SQL databases with Entity Framework for efficient data access
  • Implemented Dependency Injection for modularity, testability, and clean architecture
Technical Skills
Technologies & Tools
Backend
C# .NET Framework .NET Core .NET Standard ASP.NET Entity Framework RESTful APIs Multithreading
Cloud & DevOps
Azure Cloud Azure Functions Durable Functions Event Hubs Key Vaults Docker Kubernetes
Frontend
React TypeScript JavaScript HTML/CSS
Data & Messaging
SQL NoSQL RabbitMQ MassTransit Kafka
Practices
SOLID Principles Design Patterns Unit Testing Integration Testing Agile / Scrum Git
AI & Automation
LLMs Agentic Workflows Claude GPT Hermes GLM
Monitoring
Logging Tracing Monitoring Web Servers
Certifications
Professional Development
Meta
Front-End Developer
Meta
Advanced React
Meta
Programming with JavaScript
Meta
Principles of UX/UI Design
IBM
Querying Databases with SQL
Google
Cloud Computing
Complutense University of Madrid
Mobile App Development
CertiProf
Scrum Professional Certificate (SFPC)
Deeplearning.ai
Artificial Intelligence