Available for new opportunities

Hi, I'm Giselle Lago

Fullstack Software Engineer with 5+ years building scalable .NET microservices, Azure cloud migrations, and React frontends. Based in Zürich, Switzerland.

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About Me
Background

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

My experience spans from migrating enterprise monoliths to cloud-native microservices (BASF project at OMP), to building internal tools that improve team productivity. I'm passionate about clean architecture, high test coverage, and effective agile collaboration.

Currently advancing my React skills with a Meta Advanced React certification and working toward B2 German proficiency.

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
Personal Projects & Professional Development
Zürich, Switzerland
  • Building personal projects with React: an online store and a mobile app for a music academy
  • Pursuing Meta Advanced React professional certification
  • Advancing German proficiency (B2)
June 2024 — December 2024
.NET Software Engineer
Sulzer Ltd — Zürich, Switzerland
  • Collaborated with high-performance teams to design an all-in-one solution integrating new features while maintaining legacy system behavior
  • Enhanced system performance by 20% through bug discovery, adding test coverage, and implementing new functionalities
  • Integrated new features while working closely with the frontend team
August 2020 — May 2024
.NET Software Engineer
OMP — Barcelona, Spain
  • Developed an internal testing tool, now integral to multiple team workflows
  • Re-engineered a core product from monolith to microservices, improving scalability and performance
  • Led Azure Cloud migration (BASF project) using Azure Functions and Durable Functions for scalable, resilient solutions
  • Designed microservices and APIs contributing to a 30% increase in system efficiency
  • Provided .NET expertise across teams, driving technical growth and code quality
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
Monitoring
Logging Tracing Monitoring Web Servers
Certifications
Professional Development
Meta
Advanced React
Meta
Programming with JavaScript
Google
Cloud Computing
Complutense University of Madrid
Mobile App Development
CertiProf
Scrum Professional Certificate (SFPC)
Deeplearning.ai
Artificial Intelligence
National University of Mexico
Statistics and Probability
SoloLearn
React + Redux