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I’m a .NET developer with 15+ years of experience building and maintaining web applications, with a strong focus on ASP.NET and SQL Server. I’ve worked across advertising, digital marketing, insurance, government, and construction, delivering high-traffic sites and internal platforms with an emphasis on performance, stability, and maintainability. I enjoy working in agile environments and collaborating with distributed teams through clear communication and thorough code reviews. In recent roles, I’ve led migrations to modern .NET versions, developed internal automation tools to replace manual spreadsheet workflows, and contributed to large-scale websites using Azure and modern engineering practices (including AI-assisted development with Copilot).…I’m a .NET developer with 15+ years of experience building and maintaining web applications, with a strong focus on ASP.NET and SQL Server. I’ve worked across advertising, digital marketing, insurance, government, and construction, delivering high-traffic sites and internal platforms with an emphasis on performance, stability, and maintainability. I enjoy working in agile environments and collaborating with distributed teams through clear communication and thorough code reviews. In recent roles, I’ve led migrations to modern .NET versions, developed internal automation tools to replace manual spreadsheet workflows, and contributed to large-scale websites using Azure and modern engineering practices (including AI-assisted development with Copilot).

CESAR ALBALAT CORTES

Web Developer, Back-End Developer, Programmer, +2

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I’m a .NET developer with 15+ years of experience building and maintaining web applications, with a strong focus on ASP.NET and SQL Server. I’ve worked across advertising, digital marketing, insurance, government, and construction, delivering high-traffic sites and internal platforms with an emphasis on performance, stability, and maintainability. I enjoy working in agile environments and collaborating with distributed teams through clear communication and thorough code reviews. In recent roles, I’ve led migrations to modern .NET versions, developed internal automation tools to replace manual spreadsheet workflows, and contributed to large-scale websites using Azure and modern engineering practices (including AI-assisted development with Copilot).…I’m a .NET developer with 15+ years of experience building and maintaining web applications, with a strong focus on ASP.NET and SQL Server. I’ve worked across advertising, digital marketing, insurance, government, and construction, delivering high-traffic sites and internal platforms with an emphasis on performance, stability, and maintainability. I enjoy working in agile environments and collaborating with distributed teams through clear communication and thorough code reviews. In recent roles, I’ve led migrations to modern .NET versions, developed internal automation tools to replace manual spreadsheet workflows, and contributed to large-scale websites using Azure and modern engineering practices (including AI-assisted development with Copilot).

Available to hire

I’m a .NET developer with 15+ years of experience building and maintaining web applications, with a strong focus on ASP.NET and SQL Server. I’ve worked across advertising, digital marketing, insurance, government, and construction, delivering high-traffic sites and internal platforms with an emphasis on performance, stability, and maintainability.

I enjoy working in agile environments and collaborating with distributed teams through clear communication and thorough code reviews. In recent roles, I’ve led migrations to modern .NET versions, developed internal automation tools to replace manual spreadsheet workflows, and contributed to large-scale websites using Azure and modern engineering practices (including AI-assisted development with Copilot).

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Spanish; Castilian

Fluent

Work Experience

Freelance Web Developer at Sacyr

September 1, 2018 - May 1, 2026

Worked remotely on multiple Sacyr projects, mainly developing an internal tool to automate and centralize the employee performance review process, replacing a manual workflow based on Excel spreadsheets. Maintained and implemented new features aligned with evolving business requirements. Migrated multiple applications to the latest .NET framework to improve performance and security. Recently contributed to a large-scale website in a team of 20+ developers using .NET 10 and integrated Copilot into the engineering workflow, gaining hands-on exposure to core Azure cloud services.

Freelance Web Developer at AXA Group Direct (via Everis)

April 1, 2015 - July 1, 2018

Delivered internal and external applications as part of a large agile team across four countries. Key contributions included replacing an existing credit card payment gateway on a public website, creating a claims website for car accident reporting, migrating authentication/authorization from ASP.NET Membership to ASP.NET Identity, and adding OAuth2 authentication using JWT tokens for multiple public-facing websites and web services.

Remote Freelance Web Developer at Syzygy

January 1, 2015 - February 1, 2015

Built Japanese and Canadian Mazda websites remotely using EpiServer.

Freelance Web Developer at TLC Marketing

November 1, 2014 - December 1, 2014

Completed the back-end build of a multilingual mini-site for Henkel, coordinating with the backend team in London and a front-end developer responsible for HTML/JavaScript. Supported project scoping with account teams and resolved day-to-day issues on existing websites.

Freelance Web Developer at Syzygy

February 1, 2014 - November 1, 2014

Developed a multilingual Mazda Rebels website for 25 countries using Agile methodology, along with a custom CMS for editors. The site was built using MVC5 and MongoDB, with Web API 2 and ASP.NET Identity, including social login functionality.

Freelance Web Developer at RPM Ltd

November 1, 2013 - January 1, 2014

Performed updates and code optimization on multiple websites (Cadbury, Heineken, and RPM’s intranet) built with Web Forms and MVC4 with Code First and SQL Server. Implemented features including image manipulation (overlay images and overlay text), geolocation via Google Maps API, chart generation via Google Chart API, and a spreadsheet generator via handlers.

Freelance Web Developer at TLC Marketing

February 1, 2013 - August 1, 2013

Worked in a team of 8 developers using Scrum for building new websites and maintaining existing ones. Coordinated with development and account teams across multiple countries. Built websites using MVC4 and SQL Server for clients such as McDonald’s, L’Oreal, Michelin, and Continental. Integrated web services and payment systems including PayPal and SecurePay.

Freelance Web Developer at Sapient Nitro

October 1, 2012 - January 1, 2013

Built the complete back-end for a NatWest Bank competition website using MVC4 Code First, SQL Server 2008, and the Unit of Work design pattern. Developed an upload flow for images and videos moderated through a bespoke internal admin interface, with approved submissions displayed in an image gallery. Contributed jQuery enhancements for improved user experience.

Freelance Web Developer at Greenroom@Momentum

February 1, 2011 - February 28, 2011

Rebuilt a .NET site from Web Forms to MVC 2.

Freelance Web Developer at Forward Group

February 1, 2011 - June 1, 2012

Built an internal administration tool for a Tesco website to allow admin users to create surveys shown on the website and completed by end users. The tool provided user statistics and controlled displayed site content based on criteria such as age range and gender. Implemented the solution using MVC2 and SQL Server 2008.

Freelance Web Developer at Quintcomms

November 1, 2010 - January 1, 2011

Built a website for a financial institution using HTML, CSS, jQuery, .NET 3.5, and SQL Server 2008.

Freelance Web Developer at Agency Republic

October 1, 2010 - November 1, 2010

Maintained several .NET sites, working on both front-end and back-end tasks.

Freelance Web Developer at Greenroom@Momentum

September 1, 2010 - September 30, 2010

Worked on multiple .NET projects (versions 3.5 and 4.0) for clients including Microsoft, Subway, and Glade.

Web Developer at EHS Brann / Euro RSCG 4D Digital

March 1, 2003 - September 1, 2009

Member of a technology team developing websites for government-based clients and other major international clients. Contributed middleware for the “Act on CO2 Carbon Calculator” site by communicating with a REST API to store emission values and user data, coordinating with Flash developers on how the middleware fed data to the Flash applications. Also worked on Peugeot projects including an automated weekly newsletter generated from an XML feed and a client administration interface for viewing and approving email newsletters sent via an email campaign tool (Email Reaction).

Junior Systems Analyst at Iberia Airlines

April 1, 2002 - March 1, 2003

Provided support for over 200 users of two internal bespoke applications. Trained staff, gathered requirements for enhancements with users, coordinated discussions with programmers, and resolved day-to-day user issues.