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I am a senior/principal engineer with 10+ years delivering C#/.NET services and web applications, blending hands-on feature development with pragmatic design for high-availability, customer-facing platforms. I have experience building REST APIs, distributed systems, and modern UIs (React/Blazor) with strong testing, CI/CD, and observability practices in cloud environments. I am known for performance tuning, reliable incident response, and applying AI/ML techniques to improve automation, forecasting, and decision support.…I am a senior/principal engineer with 10+ years delivering C#/.NET services and web applications, blending hands-on feature development with pragmatic design for high-availability, customer-facing platforms. I have experience building REST APIs, distributed systems, and modern UIs (React/Blazor) with strong testing, CI/CD, and observability practices in cloud environments. I am known for performance tuning, reliable incident response, and applying AI/ML techniques to improve automation, forecasting, and decision support.

Kyle S Smith

Web Developer, Front-End Developer, Back-End Developer, +2

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I am a senior/principal engineer with 10+ years delivering C#/.NET services and web applications, blending hands-on feature development with pragmatic design for high-availability, customer-facing platforms. I have experience building REST APIs, distributed systems, and modern UIs (React/Blazor) with strong testing, CI/CD, and observability practices in cloud environments. I am known for performance tuning, reliable incident response, and applying AI/ML techniques to improve automation, forecasting, and decision support.…I am a senior/principal engineer with 10+ years delivering C#/.NET services and web applications, blending hands-on feature development with pragmatic design for high-availability, customer-facing platforms. I have experience building REST APIs, distributed systems, and modern UIs (React/Blazor) with strong testing, CI/CD, and observability practices in cloud environments. I am known for performance tuning, reliable incident response, and applying AI/ML techniques to improve automation, forecasting, and decision support.

Available to hire

I am a senior/principal engineer with 10+ years delivering C#/.NET services and web applications, blending hands-on feature development with pragmatic design for high-availability, customer-facing platforms.

I have experience building REST APIs, distributed systems, and modern UIs (React/Blazor) with strong testing, CI/CD, and observability practices in cloud environments. I am known for performance tuning, reliable incident response, and applying AI/ML techniques to improve automation, forecasting, and decision support.

Skills

Experience Level

Expert

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Intermediate

Language

English

Fluent

Work Experience

Principal Software Engineer at Glenn Medical Center

June 1, 2024 - April 1, 2026

Led modernization of Azure-hosted internal portals and APIs using C#/NET (ASP.NET Core Web API), improving page/API response times by ~35% through query tuning, caching, and payload shaping. Built and maintained integration services for clinical/operational workflows using REST, Azure Functions, and Azure API Management, reducing manual handoffs and speeding downstream processing by ~25%. Implemented role-based access control and authentication flows using OAuth2/OIDC, Azure Key Vault, and least-privilege service principals; added audit logging to support compliance for sensitive data. Developed UI enhancements for staff-facing tools with React, TypeScript, HTML/CSS, and accessibility checks, reducing usability-related tickets by ~20%. Created automation for intake, triage, and routing of operational requests using Python scripts and Azure Functions, cutting average time-to-triage from hours to minutes. Introduced LLM-assisted automation for summarizing tickets and extracting structure

Staff Software Engineer at Twilio

September 1, 2021 - May 1, 2024

Owned reliability and feature delivery for customer-facing and internal platforms, building services with C#/NET and REST APIs while partnering with product/support to ship incremental improvements safely. Designed and implemented workflow automations for operational teams using Python, SQL, and API integrations, reducing repetitive manual steps and improving case throughput by ~20%. Built integration layers to connect third-party systems via Webhooks and API clients, adding idempotency, retries, and dead-letter handling to improve end-to-end success rates. Hardened security posture with OAuth2, scoped tokens, secrets rotation, and secure logging practices; reduced risk of sensitive-data exposure by enforcing redaction and structured logging standards. Improved developer velocity by standardizing CI/CD in GitHub Actions and adding automated tests (unit + integration) with xUnit/NUnit, decreasing regression escapes and shortening lead time. Implemented performance and scalability improv

Senior Software, Site Reliability Engineer at Indeed

June 1, 2019 - June 1, 2021

Improved service reliability by implementing SLOs/SLIs, alert tuning, and runbooks using OpenTelemetry-style tracing concepts and centralized logging/metrics, reducing noisy paging and improving on-call effectiveness. Automated operational tasks and incident workflows with Python and SQL-driven analysis, accelerating detection and remediation for recurring failure modes. Partnered with application teams to remediate performance bottlenecks (database query tuning, connection pooling, caching strategies) and validate fixes with targeted load tests. Enhanced CI/CD safety by adding automated checks and rollout controls in Git-based pipelines, reducing change-failure rate through better pre-merge validation.

Software Engineer, Senior Software Engineer at Mastercard Purchase

June 1, 2014 - May 1, 2019

Developed and maintained enterprise integrations and APIs using C#/NET and SQL Server, focusing on correctness, auditability, and resilient error handling. Built internal web tooling with HTML/CSS/JavaScript to streamline operational workflows and reduce turnaround time for common requests. Implemented secure coding practices and automated testing with NUnit, improving release confidence and reducing production defects. Collaborated across stakeholders to translate requirements into incremental deliveries, balancing platform stability with feature throughput.

Senior Software Engineer at Indeed

June 1, 2019 - June 1, 2021

Developed high-performance C#/.NET and ASP.NET Core APIs for customer-facing configuration and reporting workflows; evolved microservice platform with Docker and Kubernetes; implemented event-driven processing; built internal tooling UIs with React/TypeScript; improved observability with OpenTelemetry-compatible tracing; established engineering best practices including code reviews and tests; delivered reliable release operations.

Software Engineer / Senior Software Engineer at Mastercard

June 1, 2014 - May 1, 2019

Built secure C#/.NET services and ASP.NET web applications with OAuth2/JWT-based authentication and OWASP-aligned secure coding; created automated test suites (NUnit/xUnit) and CI workflows; improved release confidence and reduced manual regression effort; focused on correctness and auditability for customer/internal portals.