Daniel Sim Graduate at University of Illinois at Chicago

Lead Backend Engineer

CVS Health

Nov 2024 - Feb 2025 (4 months)

• Led the migration of legacy monolithic healthcare applications to Azure cloud-native Microservices architecture using AKS and Apache Kafka, optimizing performance and scalability while reducing operational costs by 30%. • Re-architected Azure Data Factory and ETL pipelines for growth metrics and clinical quality data to capture change data which not only reduced spend by 50% but also 3x data freshness. • Converted an EMR management board with ASP.NET MVC and Blazor into web application based on Angular and ASP.NET Core, focusing on HL7 standards to ensure secure and inter-operable data exchange. • Re-designed critical API endpoints with gRPC, optimizing database queries, reducing latency by 25% for high-demand healthcare workflows. •

Senior Software Engineer - Staff Software Engineer

FORWARD

Jul 2021 - Oct 2024 (3 years 4 months)

• Developed a secure EHR system using ASP.NET Core 7, RabbitMQ, and Angular 17, incorporating patient demographics management, medication tracking, and clinical notes, while ensuring HIPAA compliance through data encryption, audit logging, and strict access controls to enhance patient information security. • Built a fully compliant v4.0.1 FHIR Server with a Document Store database, and all CRUD operations for resource exposed through REST and GraphQL. • Enabled performing labs in the CarePod, completely autonomous clinics, through APIs that orchestrated the collecting of blood, processing of the sample, sending the sample to external labs, and adding results to the EMR system for communication to members after reviews by the Clinical Tea

K

Senior Software Engineer

Kroger Cincinnati,

Jul 2020 - Jun 2021 (1 year)

• Migrated a monolithic billing system to a microservices architecture using ASP.NET Core, React and AWS Lambda, implementing payment processing and invoicing while integrating Microsoft Dynamic 365. • Built a Store-and-Forward system by adding an auxiliary bank server to temporarily store failed transactions and automatically reprocess after 1 min. • Applied secure SDLC process, security review on new component architecture, using Fortify for SAST at Dev stage, using Acunetix for DAST and WAF at QA stage, NoName security and WAF for Prod stage. • Integrated Datadog APM to trace microservices running on Azure Container Apps, identify and resolve latency issues, and configure custom Datadog dashboards to monitor performance metrics for A

R

Intern - Technical Lead

Redbox

May 2013 - Feb 2020 (6 years 10 months)

• Conducted code reviews and mentored 3 junior developers, fostering a collaborative environment and strengthening a team of over 10 developers. • Deployed a micro frontend system with React, enabling independent module deployment and enhancing scalability and optimizing API communication through lazy loading.

Daniel Sim

About

Detail

Timeline

Résumé