With over 18 years of experience in software development, I have worked in various roles from coding to leadership, though my true passion lies in development. I enjoy learning new technologies daily and have strong skills in communication and team management. I specialize in backend development with .Net, frontend development with React.js and Vue.js, and mobile development using Xamarin (MAUI) and React Native. I am passionate about new technologies such as ASP.Net core, C#, F#, Xamarin, Node.js, TypeScript, React, Vue.js, and Nim. Throughout my career, I have contributed to several projects, ranging from startups to established companies, delivering high-quality software solutions with a focus on performance, maintainability, and scalability.

Ramón Esteban

With over 18 years of experience in software development, I have worked in various roles from coding to leadership, though my true passion lies in development. I enjoy learning new technologies daily and have strong skills in communication and team management. I specialize in backend development with .Net, frontend development with React.js and Vue.js, and mobile development using Xamarin (MAUI) and React Native. I am passionate about new technologies such as ASP.Net core, C#, F#, Xamarin, Node.js, TypeScript, React, Vue.js, and Nim. Throughout my career, I have contributed to several projects, ranging from startups to established companies, delivering high-quality software solutions with a focus on performance, maintainability, and scalability.

Available to hire

With over 18 years of experience in software development, I have worked in various roles from coding to leadership, though my true passion lies in development. I enjoy learning new technologies daily and have strong skills in communication and team management. I specialize in backend development with .Net, frontend development with React.js and Vue.js, and mobile development using Xamarin (MAUI) and React Native.

I am passionate about new technologies such as ASP.Net core, C#, F#, Xamarin, Node.js, TypeScript, React, Vue.js, and Nim. Throughout my career, I have contributed to several projects, ranging from startups to established companies, delivering high-quality software solutions with a focus on performance, maintainability, and scalability.

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Experience Level

Expert
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Language

Spanish; Castilian
Fluent
English
Advanced

Work Experience

.Net Backend engineer at Food Experts
June 30, 2025 - July 28, 2025
Developed the NEOM-WaterFootprint-Calculator, a REST API in .NET 8 calculating environmental impacts of agricultural scenarios. Managed background services to ensure performance and collected meteorological data from third-party APIs. Monitored the system with Azure Application Insight and Serilog and integrated with external APIs for enhanced functionality.
Full stack engineer at Metagigs (Start-up)
May 1, 2024 - Present
Backend developer using Nim and frontend developer using React and React Native. Designed platform functionalities to enable a player-driven economy within games, integrating MongoDB and Redis queues and performing testing with Nim and Jest. Leveraged Nim’s ability to compile to JavaScript for sharing core services across server and frontend.
Full stack engineer at Smika (Start-up)
December 31, 2024 - July 28, 2025
Main backend developer for SMIKA CONNECT, a digital solution for management and optimization of kitchen and buffet equipment to improve sustainability. Supported frontend development with Vue.js and utilized Azure Functions, Storage Queues, and DevOps services. Emphasized code quality with Sonar Cloud and xUnit testing.
Backend .Net developer at Conectorfy (Start-up)
February 28, 2024 - July 28, 2025
Led backend development of Web API using Asp.Net Core and data import via Azure Functions. Supported frontend React.js team. Employed Azure DevOps for deployments with YAML build configurations and infrastructure deployment with Bicep. Utilized xUnit and Sonar Cloud for testing and code quality.
Node.js Backend developer, React frontend developer at Aderant
March 31, 2024 - July 28, 2025
Developed backend services with Node.js and Express, and frontend components with React for Onyx solution. Automated compliance processes for legal firms using AI to analyze documents. Engaged in testing with Jest and managed builds and deployments using YAML and GitHub Actions.
Xamarin Mobile & React front end Developer at Aderant
April 30, 2023 - July 28, 2025
Maintained and refactored Xamarin.Forms mobile and SPA React.js front end of iTimeKeep app. Developed Apple Watch, Home Widget and Siri extensions for iOS version. Managed distribution through Azure DevOps and Git version control.
Xamarin Technical Lead at Brintia
April 30, 2018 - July 28, 2025
Led development of Gestagua Xamarin.Forms app including custom components using ReactiveUI. Managed DevOps distribution via Microsoft App Center. Acted as technical lead ensuring quality and timely delivery.
Xamarin Technical Lead at Bravent
June 30, 2017 - July 28, 2025
Architected and led Xamarin cross-platform mobile app team for Ibercaja Pay enabling payments and instant transfers including Bizum. Developed native Android SDK binding and implemented host card emulation. Used Scrum methodology and managed distribution with HockeyApp and Azure Mobile Center.
Xamarin Technical Lead at Bravent
October 31, 2016 - July 28, 2025
Led architecture and development of Xamarin cross-platform mobile app for Ibercaja banking clients enabling account management and transfers. Managed a team of 5 developers. Facilitated Scrum practices and distribution using HockeyApp and Azure Mobile Center.
Xamarin Technical Lead at Bravent
April 30, 2016 - July 28, 2025
Developed Xamarin.Android tablet app for jewelry store stock management with voice recognition and sales reporting using SyncFusion charts. Managed Scrum workflow and app distribution.
Team Lead Developer at Bravent
November 30, 2015 - July 28, 2025
Led team developing app, web and backend for Nautalia travel clients enabling trip management. Developed backend to register trips analyzing confirmation emails using regex. Utilized Xamarin for Android, iOS and Windows Phone, implemented Azure services, and MVC/WebAPI frameworks.
.Net Backend engineer at Food Experts
June 30, 2025 - July 28, 2025
Developed the NEOM Water Footprint Calculator, a REST API in .NET 8 to calculate environmental impacts of agricultural scenarios. Integrated third-party meteorological APIs and implemented background services for performance. Used Azure services including Web Apps, SQL Server, and App Insight for monitoring and logging.
Full stack engineer at Metagigs
May 1, 2024 - Present
Developed backend services in Nim and frontend using React and React Native. Worked on a platform for player-driven economy in games, involving MongoDB and Redis queues. Shared core services code across server and frontend projects leveraging Nim compilation to JavaScript.
Full stack engineer at Smika
December 31, 2024 - July 28, 2025
Mainly backend development with .Net 8 and Azure services, supporting frontend development with Vue.js. Focused on resource optimization and sustainability in kitchen and buffet equipment management. Implemented testing with xUnit and ensured code quality with Sonar Cloud in Azure pipelines.
Backend .Net developer at Conectorfy
February 29, 2024 - July 28, 2025
Maintained and developed Web API using Asp.Net core and supported data import solutions using Azure Functions. Supported frontend team with React.js for app development. Integrated Azure Dev Ops for deployment and infrastructure management with Yaml and Bicep.
Node.js Backend developer, React frontend developer at Aderant
March 31, 2024 - July 28, 2025
Developed Onyx solution for legal firms automating OCG compliance using AI. Used Node.js, Express, TypeScript for backend and React for frontend. Implemented testing with Jest and managed deployments with Github Actions.
Xamarin Mobile & React front end Development at Aderant
April 30, 2023 - July 28, 2025
Maintained and refactored iTimeKeep app using Xamarin.Forms and React.js. Developed Apple Watch, Home Widget, and Siri extensions for iOS. Managed Azure Dev Ops distribution and Git for version control.
Xamarin Technical Lead at Brintia
April 30, 2018 - July 28, 2025
Led Xamarin.Forms development for Gestagua app managing water provider services using ReactiveUI MVVM pattern. Designed custom chart bars without renderers and utilized Microsoft App Center for DevOps distribution.
Xamarin Technical Lead at Bravent
June 30, 2017 - July 28, 2025
Developed cross-platform mobile payment app for Ibercaja clients. Led a team of 4 developers and handled app architecture including Android SDK binding and host card emulation feature. Worked under Scrum methodology.
Xamarin Technical Lead at Bravent
October 31, 2016 - July 28, 2025
Architected Xamarin cross-platform mobile app for Ibercaja banking services. Led a 5-developer team enabling account management and transfer functionalities. Project was the first Xamarin project at Microsoft Spain.
Xamarin Technical Lead at Bravent
April 30, 2016 - July 28, 2025
Developed Xamarin.Android app for jewelry store stock management with voice recognition search and sales chart reporting using SyncFusion controls. Led project under Scrum methodology.
Team Lead Developer at Bravent
November 30, 2015 - July 28, 2025
Led app, web, and backend development for Nautalia clients trip management. Implemented trip registration backend analyzing trip confirmation emails with Regular Expressions. Utilized Xamarin, MvvmCross, Azure services, and ASP.NET frameworks.

Education

Physics Degree at Universidad de Granada (Spain)
January 1, 1996 - December 31, 2002
Physics Degree at Universidad de Granada
January 1, 1996 - December 31, 2002

Qualifications

Xamarin Certified Mobile Developer
January 1, 2015 - December 31, 2015
Professional Scrum Master
January 1, 2012 - December 31, 2012
Xamarin Certified Mobile Developer
January 1, 2015 - December 31, 2015
Professional Scrum Master
January 1, 2012 - December 31, 2012

Industry Experience

Software & Internet, Gaming, Energy & Utilities, Financial Services, Travel & Hospitality