douglas rosenberg
Currently leading the full-stack build of an ERP system for a global nonprofit—built a secure data-masking pipeline for safe dev access, synced Salesforce and ERP records, and shipped 50 custom reports relied on by 500+ staff.
Who I Am
Full-stack .NET developer who turns sprawling enterprise systems into software people actually enjoy using—Blazor by trade, detail-obsessed by nature.
I'm Doug Rosenberg, a Chicago-based full-stack .NET developer. I build custom websites and web apps for small businesses, and Blazor and ERP systems for larger organizations, currently leading the full-stack build of an ERP system for a global nonprofit. I'm available for freelance projects and consulting.
Download résumé🛠️ Currently leading the full-stack build of an ERP system for a global nonprofit—built a secure data-masking pipeline for safe dev access, synced Salesforce and ERP records, and shipped 50 custom reports relied on by 500+ staff. 🎨 Before that, led UI/UX design and development across four applications with Figma, Blazor, Syncfusion, and SQL Server.
Where I've Worked
Full-stack .NET software engineer
- Developed a custom SQL data-masking tool to generate sanitized development databases, establishing a standardized, secure pipeline for internal and external contributors to interface with complex ERP data without risk.
- Orchestrated a seamless Salesforce integration to synchronize and reconcile disparate ERP and CRM records, ensuring data integrity and cross-platform consistency across the enterprise ecosystem.
- Spearheaded development of 10 dynamic features—including a directory card layout with cascading filters and a dual-mode prayer wall interface—delivering intuitive user experiences and robust admin functionality. Composed with Blazor, C# .NET 10, MS SQL Server, and Syncfusion controls.
- Engineered 2 CI/CD pipelines using GitHub Enterprise Actions and YAML (IaC) to automate the deployment of 10 production Blazor applications and a custom SharePoint site.
- Elevated backend performance by architecting a scalable service layer, laying the foundation for a future API ecosystem.
- Designed and deployed 50 insightful reports using DevExpress Reporting, enabling data-driven decisions powered by a centralized SQL Server data store.
- Reengineered a unified Data Grid solution to streamline data visualization across 50+ database tables, enhancing consistency and maintainability.
SQLAzure
Front-end software engineer
- Orchestrated end-to-end UI/UX design for four distinct applications, transforming initial requirements into sleek, user-friendly interfaces using Figma, .NET Blazor, Syncfusion controls, and custom CSS
- Secured high-impact project win with a Fortune 10 client by integrating proprietary LLMs for document processing—teamed up seamlessly with Python engineers and infrastructure leads to deliver a polished solution powered by .NET Blazor, SQL Server, KeyCloak, and Syncfusion
- Reimagined the Customer Portal experience from the ground up—empowered users to upload and process hundreds of thousands of files through secure, proprietary LLMs in a visually compelling dashboard built with .NET Blazor and Syncfusion
- Built Admin Portal from scratch—partnered closely with PMs to uncover client onboarding flows and defined backend data requirements, crafting a scalable interface with .NET Blazor, SQL Server, KeyCloak, and Syncfusion
CSS
Full-stack .NET software engineer
- Engineered a robust, enterprise-grade ERP system for a global manufacturing firm—leveraged .NET Blazor, MudBlazor, SQL Server, and Azure to modernize operations from end to end
- Led critical architecture sessions and captured technical insights through thorough documentation with Subject Matter Experts—bridging business needs with scalable design
- Built seven foundational layers—from Database to Web interface—ensuring seamless integration across DB, Repository, Domain, Domain Services, API, and UI
- Maintained and debugged four legacy systems while simultaneously developing a new platform to handle essential business processes—ensuring zero disruption during transformation
Junior Angular/.NET software engineer
- Contributed to the ongoing evolution of BridgestoneMarketing.com—a complex B2B platform—by enhancing features across Angular frontend, three ASP.NET servers, SQL database, and Kendo UI components
- Engineered middleware to dynamically translate inventory content into French, adapting based on user profiles—boosting global accessibility and user relevance
- Delivered high-volume feature enhancements and bug fixes with speed and precision—ensuring platform stability and continuous improvement
- Managed seamless code deployments across local, staging, and production environments using TFS and Azure DevOps—upholding release integrity
- Executed key security initiatives leveraging Microsoft 365, AlertLogic, and Xamin—fortifying system resilience and data protection
What I Build With
- JavaScript32.8%
- C#22.5%
- TypeScript15.5%
- HTML13.7%
- CSS7.4%
When I'm Not Coding
I'm a devoted father of two — my kids are the best thing I've ever built. Outside the keyboard I try to stay in motion: long rides on the lakefront, competitive badminton on Tuesday nights, and whatever LEGO set the kids convinced me we absolutely needed. Cooking is how I decompress; there's something satisfying about a recipe that actually works on the first try.
- CyclingLakefront path, fixed gear, all weather
- CookingWeeknight dinners and weekend experiments
- BadmintonPark district league, Tuesday nights
- LegosTechnically for the kids
The kids are more impressive than anything in my GitHub.
From Saxophone to Software
Before I wrote a line of code, I spent a decade as a working jazz saxophonist. I performed, recorded, and taught in Chicago — not as a side project, but as a career.
My primary ensemble was Eastern Blok, with whom I recorded two albums. I also performed with the Goran Ivanovic Group and had the privilege of sharing stages with Robert Glasper, Kendrick Scott, Kelan Phil Cohran, and Robert 'Baabe' Irving III.
Music taught me how to listen, how to collaborate under pressure, and how to hold a structure together while leaving room for something unexpected. Those habits didn't disappear when I switched careers — they just found a new medium.
“A fearlessness of spirit and a robustness of tone”
- Better Than TVDoug RosenbergLeader, Composer
- UnderwaterEastern BlokSaxophone
- Folk TalesEastern BlokSaxophone
- Goran Ivanovic GroupGoran IvanovicSaxophone
- Robert Glasper
- Goran Ivanovic
- Kendrick Scott
- Kelan Phil Cohran
- Robert 'Baabe' Irving III
- Rakalam Bob Moses
- Maurice Brown
- Sam Barsh
Better Than TV — liveGet In Touch
Whether you have a project in mind, need a consultation, or just want to connect — I'd love to hear from you.