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I am a skilled senior/lead full-stack .NET developer with 19+ years of experience across the SDLC, including 4+ years as a team lead and mentor. I’ve built micro-service architectures, cloud-native and event-driven solutions on Azure and AWS, and I excel at extracting hidden requirements from stakeholders, communicating clearly, and delivering high-quality software. I regularly collaborate with cross-functional teams, document decisions, and enjoy guiding others while leveraging AI tools like Copilot to boost productivity. I am a self-starter who thrives in fast‑moving environments, values code reviews and best practices, and am passionate about creating reliable, scalable systems that meet real business needs. I pride myself on clean architecture, mentoring teammates, and turning complex problems into practical technical solutions.…I am a skilled senior/lead full-stack .NET developer with 19+ years of experience across the SDLC, including 4+ years as a team lead and mentor. I’ve built micro-service architectures, cloud-native and event-driven solutions on Azure and AWS, and I excel at extracting hidden requirements from stakeholders, communicating clearly, and delivering high-quality software. I regularly collaborate with cross-functional teams, document decisions, and enjoy guiding others while leveraging AI tools like Copilot to boost productivity. I am a self-starter who thrives in fast‑moving environments, values code reviews and best practices, and am passionate about creating reliable, scalable systems that meet real business needs. I pride myself on clean architecture, mentoring teammates, and turning complex problems into practical technical solutions.

David Kahn

Full Stack Developer, Web Developer, Back-End Developer, +2

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I am a skilled senior/lead full-stack .NET developer with 19+ years of experience across the SDLC, including 4+ years as a team lead and mentor. I’ve built micro-service architectures, cloud-native and event-driven solutions on Azure and AWS, and I excel at extracting hidden requirements from stakeholders, communicating clearly, and delivering high-quality software. I regularly collaborate with cross-functional teams, document decisions, and enjoy guiding others while leveraging AI tools like Copilot to boost productivity. I am a self-starter who thrives in fast‑moving environments, values code reviews and best practices, and am passionate about creating reliable, scalable systems that meet real business needs. I pride myself on clean architecture, mentoring teammates, and turning complex problems into practical technical solutions.…I am a skilled senior/lead full-stack .NET developer with 19+ years of experience across the SDLC, including 4+ years as a team lead and mentor. I’ve built micro-service architectures, cloud-native and event-driven solutions on Azure and AWS, and I excel at extracting hidden requirements from stakeholders, communicating clearly, and delivering high-quality software. I regularly collaborate with cross-functional teams, document decisions, and enjoy guiding others while leveraging AI tools like Copilot to boost productivity. I am a self-starter who thrives in fast‑moving environments, values code reviews and best practices, and am passionate about creating reliable, scalable systems that meet real business needs. I pride myself on clean architecture, mentoring teammates, and turning complex problems into practical technical solutions.

Available to hire

I am a skilled senior/lead full-stack .NET developer with 19+ years of experience across the SDLC, including 4+ years as a team lead and mentor. I’ve built micro-service architectures, cloud-native and event-driven solutions on Azure and AWS, and I excel at extracting hidden requirements from stakeholders, communicating clearly, and delivering high-quality software. I regularly collaborate with cross-functional teams, document decisions, and enjoy guiding others while leveraging AI tools like Copilot to boost productivity.

I am a self-starter who thrives in fast‑moving environments, values code reviews and best practices, and am passionate about creating reliable, scalable systems that meet real business needs. I pride myself on clean architecture, mentoring teammates, and turning complex problems into practical technical solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Developer at Charles Schwab (Contract)

April 1, 2025 - April 1, 2025

Developed enrollment and account management UI and scalable web services for client participant consumers under Retirement Plan Services. Ensured 504 ADA/WCAG 2.0 compliant UI. Worked with ASP.NET Core WebAPI, OpenAPI, API Gateway, C#, T-SQL, Angular, Node.js, GitHub, Splunk, Azure, CI/CD, and TDD in an Agile/Jira environment.

Lead Developer at UST/Advantasure

February 1, 2024 - February 1, 2024

Developed enhancements and patches for BCBS Medicare EDI enrollment and claims batch processing and multi-tenant applications. Technologies included ASP.NET Web Forms, C#, Linq-to-SQL, Oracle, T-SQL, Azure, Agile, and Git.

Software Engineer at Avasure

May 1, 2023 - May 1, 2023

Designed hybrid authentication for hospital virtual care systems to support pass-through federated identity via SAML/SSO. Implemented Okta Auth0 with OIDC, Azure, C#, .NET Core, Web API, ReactJS, Redux, and ensured enterprise-grade architectural guidance and best practices.

Software Engineer II at TaxAct (Blucora)

November 1, 2022 - November 1, 2022

Supported and enhanced online tax prep software on native AWS using Lambda, S3, SQS, API Gateway, ECS, EKS, .NET Core Web API, C#, Vue 3, Node.js, JavaScript, 504 ADA/WCAG 2.0; developed micro-frontends with ECS/EKS; implemented OCR/OFX workflow for tax documents; built REST APIs and SDKs; QA with NUnit, Splunk, and DevOps practices.

C# Developer at Holiday Retirement

September 1, 2021 - September 1, 2021

Architected and developed web and API apps using .NET Core MVC, JavaScript, API Gateway, WebAPI, SOAP/XML, SQL; integrated OAuth 2.0; contributed to Azure App Services, Functions, WebJobs; supported Genesys IVR integration with Microsoft Dynamics CRM; enhanced RESTful APIs and mobile data integration.

Software Engineer IT-GRC at PriceWaterhouseCooper (PwC)

November 1, 2019 - November 1, 2019

Developed and supported governance and risk/compliance tracking applications using Angular 8, Node.js, MongoDB, MQL, SQL Server, SQL Server Reporting; implemented NLP-driven knowledgebase concepts and dashboards; contributed to enterprise-wide risk/compliance tooling.

Senior Software Engineer at Alegeus

August 1, 2018 - August 1, 2018

Debugged functional/configuration issues for Wealthcare Admin; deployed changes to Wealthcare Admin website and related services; worked with ASP.NET, MS SQL, JavaScript, jQuery, Java, C++, and Entity Framework; contributed to healthcare payment and admin platforms.

Senior Software Engineer at MyNexus Corporation

July 1, 2017 - July 1, 2017

Led development of Azure-based home healthcare portal; built UI/workflows and databases; delivered custom OWIN 3-factor MFA security for authentication/authorization; implemented fax, letters, notifications, patient routing, and scheduling components.

Software Engineer at MAJOR LEAGUE FANTASY

September 1, 2015 - September 1, 2015

Developed PlayMLF.com fantasy sports game using ASP.NET MVC, AngularJS, and PHP on Linux clusters with a sharded MySQL database and Redis caching; supported scalable multi-user features and social integration.

Lead Developer at HP ENTERPRISE SERVICES

January 1, 2014 - January 1, 2014

Led development of automated VM server quick-provisioning components; built multi-threaded, distributed high-availability software in C#/.NET; designed a hierarchical data-driven rules engine and a rules editor in WinForms.

Contract Software Engineer at NCR

November 1, 2011 - November 1, 2011

Developed kiosk and client web software for hospitals; HL7 interfaces; built CVM payment gateway interface; implemented mixed SSO/forms authentication in C#/.NET for Walgreens Clinic Scheduler.

Contract Web Developer at Avatar International

September 1, 2010 - September 1, 2010

Developed web portals containing patient surveys for clinical trials using ASP.NET MVC, Entity Framework, Linq, JavaScript, jQuery, SyncFusion; produced views and analysis graphs for study teams.

Senior Web Developer at Bright House Networks

August 31, 2009 - August 31, 2009

Full-stack development of internal and public-facing sites and back-ends using T-SQL, C#, MS Access, C++, VBA, WinForms, ASP.NET, MVC, Linq, jQuery, HTML/CSS, SQL, DB2, WCF, SSIS, SSRS; Agile practices. Notable achievements included a public live chat interface with transcripts, surveys, and a Performance Management Tool; integrated Ektron CMS pages into BrightBiz.

Lead Reports Developer at Horizon Health Corporation

April 1, 1999 - August 1, 2004

Lead Reports Developer. Led 2 team members. Performed development, maintenance, reporting for managed healthcare. Used Delphi 5, C#, .NET Framework, MS SQL, SSIS. Developed a report management program for managing for all in-house reports. Optimized T-SQL queries and scripts on a large database. Designed and built a fully dynamic reports and scheduling tool for management. Designed a claims data warehouse. Nightly process included data verification and cleanup, rule checking, error flagging, formatting for reports and claims files, and other tasks. Designed and implemented encounter-file process for B2B ETL files, including an interactive UI to map file structure to database. Developed a series of 36 reports (including HEDIS) needed to support Horizon’s successful 3-year NCQA (National Committee for Quality Assurance) accreditation.