John Castleman Email & Phone Number

Texas, United States

Phoenix, Az, Us

Provide senior leadership for C#/.NET Development Teams. Managed people and architecture forElectronic Medical Records systems for rehabilitation PT facilities across North America; providedleadership for Continuous Integration / Continuous Deployment; championed Agile processes and value ofUnit Test.● Directed team development of and expansion of existing feature set, targeting both Cloud (SaaS) andOn-Prem from shared .NET code base, for hundreds of facilities● Simplified existing code branching model strategy from outdated GitFlow towards Trunk-based● Reinstated and architected unit testing practices as part of Agile Development

Chicago, Il, Us

Provide senior leadership for C# / .NET Development Teams. Managed people and architecture for Evidence Library (EL) managing video evidence for law-enforcement agencies across North America; provided leadership for Continuous Integration / Continuous Deployment efforts; championed Agile processes and value of Unit Test.• Directed team development of Multi-Tenant performance improvement and expansion of existing feature set, targeting both Cloud and On-Prem from shared .NET Core / Standard code base, for hundreds of agencies• Led team development of next generation On-Prem Enterprise system, supporting hundreds of agencies, designed to replace thousands of agencies running legacy On-Prem Enterprise software• Interacted with front-line Services organization, defining escalation policies across multiple departments and four software teams

Managed architecture and design of C# / .NET development teams on Evidence Library (EL) development. Advanced member skills through hiring, training, and mentoring. Oversaw multiple teams of developers encompassing all On-Prem Enterprise systems at thousands of agencies.• Architected, designed, and led development of product features deployed on regular Agile Sprint basis to thousands of production environments using CI/CD techniques, including:• Features such as Synchronized Playback, Group Recording, and Event Linking• Device Import Protocol, including architectural documents and diagrams• Disc “Robot” Publishing Service API as Microservice across multiple versions of EL to enable agencies to export video evidence for court, including software contract and diagrams for Reactive Programming / ReactiveUI implementation• Migration solution from legacy EL On-Prem to next generation EL On-Prem and EL Cloud, utilizing database schema transformations, migrating dozens of legacy to next gen deployments

Designed and developed C# / .NET software, acting as Senior Developer and Designer on Evidence Library (EL). Delivered full-stack development solutions involving .NET Framework, C#, Entity Framework, SQL Server, ASP.NET MVC, and ASP.NET Web API.• Designed, developed, and continuously deployed product features at thousands of On-Prem agencies, including:• Import Protocol V2, including protocol design document and diagrams to scale local application-layer protocol between Software and Firmware at multiple system interface points• Publishing Service API as microservice used across multiple versions of EL, including software contract and diagrams• Software interface to first generation Body-Worn Camera, including application-layer protocol diagrams as technical lead• Migration solutions from existing video-evidence systems to EL by reverse-engineering existing EL database schema into Entity-Relationship Diagrams (ERD), supporting migration of 100 TBs of video data used at several large agencies

Munich, De

Technical Lead on $100Ms high-availability, centralized server system, transferring tens of millions of images and records per day between 200+ remote locations and local systems

Munich, De

Technical Lead on $15M flat-mail remote encoding system's Image Management System (IMS)

Munich, De

Software Designer for cross-compiling and cross-debugging Application Suite for embedded controllers

Masters, Computer Science, Plus Electrical Engineering Coursework

Bachelors, Mathematics