Andrew Calhoun

About Andrew Calhoun

I\'m a Senior Software Engineer focused on backend development, cloud systems, and scalable platform architecture, with a decade of experience designing and delivering resilient solutions. I specialize in modernizing legacy systems, building event-driven architectures, and creating backend services that prioritize both performance and maintainability.My work is grounded in practical engineering: balancing technological innovation with the need for stability, clarity, and business impact. I thrive in environments where thoughtful system design, clear process, and authentic technical leadership are valued.I have deep experience across backend languages and ecosystems, particularly C#/.NET, Python, Node.js, and cloud platforms like Azure, AWS, and GCP. I\'ve architected and delivered systems using Kubernetes, Docker, serverless frameworks, and event-driven messaging (e.g, AWS EventBridge, SQS) to power scalable, resilient applications.Beyond hands-on engineering, I believe great software development requires strong systems thinking, peer mentorship, and the discipline to build foundations that last. I\'ve worked across both startup and mid-sized environments, helping teams navigate the balance between speed and sustainability without sacrificing technical quality.I\'m passionate about projects where engineering excellence isn\'t an afterthought, but a core value — where teams aim to build things that endure, not just chase quick wins.I\'m also an active Freemason and Shriner, committed to building stronger communities through mentorship, local charitable efforts, and support for widows, orphans, and families in need. Through Shriners International (Kerak Shrine), I help advance broader philanthropic missions, including the support of children\'s hospitals and public service initiatives across Nevada, Northern California, Utah, and the country.

Experience

1. Senior Software Engineer i

   Aledade

   May 2023 — Present · Bethesda, MD, US

   Architected a scalable internal event bridge system using AWS Lambdas, reducing data update delays by 40% and creating a reliable, real-time data synchronization process for 500K+ patient records and reducing sync costs by 15%.Led an internal guild specializing in Event-Driven Architecture, establishing best practices and improving system design across teams, resulting in more cohesive and efficient workflows.Reduced Snowflake storage costs by 50% per month by implementing dynamic, time-based warehouse resizing and query acceleration, driving significant cost savings for the company.Leveraged GitHub CoPilot and other AI Assisted workflows to improve productivitySpearheaded a major data refactor to enhance data usability, consistency, and compartmentalization, with a focus on improving patient loss and retention workflows.Proactively addressed technical debt by leading initiatives to address pain points, fix inefficiencies, and improve overall system performance following major system refactors.Integrated VoIP solutions (RingCentral, Twilio), automating event associations for recorded calls, improving communication efficiency across teams.Mentored and onboarded junior developers, fostering their growth and integrating them into the team, creating a high-performance and collaborative development environment.Managed a critical database indexing issue, creating and executing a crisis response plan to ensure smooth database operations and prevent future disruptions.Authored and updated internal documentation for the Vida application, closing gaps in onboarding, procedural guides, and feature updates to ensure clarity and accessibility for internal teams.Managed AWS infrastructure (IAM, profiles, databases), ensuring security, stability, and operational excellence across the cloud environment.

Education

• University of Southern California

  Master of Science, Computer Science

• Oregon State University

  Bachelor’s Degree, Computer Science

  2015 — 2016