Windows Development Lead

We are seeking a highly skilled and experienced Windows Development Lead to guide our development team while remaining actively involved in hands-on coding and solution design. This role combines technical leadership, architecture oversight, and direct development on mission-critical systems that integrate emergency communication platforms with CAD (Computer-Aided Dispatch) environments.

The ideal candidate has strong experience in .NET, C#, and Python, understands complex Windows environments , and can manage both people and projects while still contributing directly to the codebase.

This is a 100% remote position - open to candidates from any part of LATAM .

Requirements

• Proven ability to lead technical teams, mentor developers, and manage delivery timelines.
• Strong proficiency in C# ( .NET Framework / Core) and Python 3.7+ (3.9 preferred).
• Experience with SQL Server, T-SQL, and database administration.
• Solid understanding of TCP / IP protocols, socket connections, and network configurations.
• Hands-on experience with .NET libraries, COM Interop, XML / JSON serialization, and CAD system APIs.
• Familiarity with Azure Service Bus (topics, subscriptions, dead-letter handling, message filtering).
• Knowledge of Windows environments, permissions, services, and deployment tools.
• Strong debugging and testing skills using simulators and validation frameworks.
• Experience developing Windows desktop UI applications, including Windows Forms (.NET Framework / .NET 6+) and WinUI 3 (Windows App SDK, XAML / MVVM) .
• Experience designing and building Windows client-server applications with TCP / IP / socket
• Experience working with Crystal Reports .
• English Advanced.

Nice to Have

Main Activities

Education

About Definity First

Definity First specializes in IT Services, Cloud Business Applications & Microsoft Technologies, providing enterprise-grade solutions that translate into a successful business transformation.

We were founded in 2004, with six offices distributed across the US and Mexico. Definity First has worked for transformative, iconic companies and universities such as Tesla, Flowserve, Harvard, Berkeley, Caltech, and more.

At Definity First we do not discriminate towards gender, age, sexual preferences / orientation, religion, pregnancy, ethnicity or place of origin.

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