Brandon Roman

Senior .NET Developer

Alpaca

Feb 2023 - Current (3 years 6 months)

• Developed Scalable option trading platform using TDD approach with xUnit , supporting parallel processing of commands and events using .NET Core, Kafka, Akka.NET, Entity Framework Core, and SQL Server.Enti • Redesigned Trader aggregate in options trading platform, eliminating concurrency errors by processing commands and events with Kafka and Akka.NET , improving processing speed by 33% by parallelizing trader-symbol aggregate processing. • Leveraged the actor model for event and command processing, boosting throughput from 200 to 10,000 messages per second. • Diagnosed and resolved thread starvation in the payment service using DotNet-Dump, increasing throughput from 10 to 1,000 requests per second and reducing infrastructure costs b

L

Senior .NET Developer

LightSpeed Retail

Mar 2021 - Jan 2023 (1 year 11 months)

• Developed warehousing system using .NET Core, SQL server, Angular, and Angular Material. • Reduced order processing time by 50% and decreased data entry errors through barcode scanning implementation • Replaced third-party printer software with real-time receipt printing using Socket Programming, cutting checkout times and reducing customer support daily calls from 20-40 to 0. • Automated deployments via GitLab CI/CD and Docker, reducing release time by over 80%. • Refactored legacy .NET framework service code to .NET Core and CQRS, enhancing maintainability and developer onboarding.

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Solution Architect & System Engineer

Komar Industries

Jan 2020 - Feb 2021 (1 year 2 months)

• Reengineered the sensor management system for compactors on AWS, cutting monthly infrastructure costs from $2,000 to $300. • Designed sensor system for garbage compactor machines using AWS EC2, RDS, IOT for backend service and a dashboard using A ngular for monitoring machines which were attached by ESP chips programmed with C/C++ and Arduino. • Designed cost-effective ESP32 and ESP8266-based chips with current sensors and LTE connectivity for compactor monitoring, redu cing hardware costs from $1,000 to $200 per unit.

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Full Stack .NET Developer

EDiS Company

Jun 2018 - Nov 2019 (1 year 6 months)

• Digitized construction inspection processes with Angular backed by .NET Core Web API, removing paperwork and reducing proc essing time by 50% . Open Source Contributions

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