Open to opportunities

Tom K

@tomk

Senior software engineer specializing in C#/.NET Core, REST APIs, SQL Server, and Azure—building scalable SaaS and reliable integrations.

United States

Message

What I'm looking for

I’m looking to build scalable C#/.NET Core SaaS systems—owning REST API design, performance tuning, and Azure integrations—while delivering reliably with strong CI/CD, code review, and customer-centric problem solving.

I’m a Senior Software Engineer with 13+ years of experience specializing in C#/.NET Core, SQL Server, and Azure cloud solutions. I design scalable RESTful APIs, optimize layered architectures, and drive full-stack development to deliver high-impact SaaS products—often improving system performance by 30–45%.

I’ve led major migrations and integrations, including moving legacy data access layers to NHibernate to optimize SQL Server query performance by 40% and reduce latency. I also architect Azure security and reliability patterns with services like Blob Storage and Key Vault, and I build dependable background processing with Hangfire for large-scale daily task execution.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Scribematic / Matic

Nov 2024 - Present (1 year 8 months)

Architected and developed .NET Core applications and REST APIs for B2B SaaS operations, improving system scalability. Migrated legacy data access to NHibernate, optimized SQL Server performance, integrated Azure Blob Storage and Key Vault, and built Hangfire background jobs for reliable daily task execution.

C#.NET Core REST APIs NHibernate SQL Server Azure Blob Storage Azure Key Vault Hangfire Background Jobs Scalability Stored Procedures

Senior Software Engineer

Power House, LLC

Jul 2022 - Oct 2025 (3 years 3 months)

Led development of scalable .NET Core backend services and RESTful APIs, improving CRM data processing efficiency and increasing lead generation and sales conversion. Optimized SQL Server performance, orchestrated Azure Functions deployments for high-volume processing with 99.9% uptime, and integrated Twilio communication workflows.

.NET Core REST APIs CRM SQL Server Azure Functions Performance Optimization Scalability Data Integration

Full Stack Software Engineer

Grails SF

Jan 2021 - Jul 2022 (1 year 6 months)

Engineered a high-performance C#/.NET e-commerce platform with high uptime and integrated Stripe payments via secure RESTful APIs. Designed and optimized SQL Server databases, implemented JWT authentication, and delivered features during Agile sprints that improved conversion rates.

C#.NET E commerce Design REST APIs Stripe API SQL Server JWT Authentication Agile Database Optimization

Freelance Full Stack Web Developer

UpWork

Jul 2021 - Oct 2021 (3 months)

Developed and maintained full-stack .NET applications, building scalable REST APIs with SQL Server-backed features and integrating CI/CD with Git-based source control. Optimized performance via code refactoring and database query tuning to reduce deployment errors and improve stability.

C#.NET Full Stack REST APIs SQL Server CI CD Git SQL Tuning Refactoring Troubleshooting

A/V, Security & Networking Service

HelloTech, Inc.

Dec 2019 - Jan 2021 (1 year 1 month)

Resolved A/V, security, and networking issues for 3,500+ clients with a 97% first-contact resolution rate. Installed and optimized technical systems, trained users to troubleshoot minor issues, and managed technical projects through completion.

A V Troubleshooting Security Troubleshooting Network Troubleshooting client support Installation Technical Training Project Management

Corporate Security Professional

Allied Universal

Jan 2018 - Dec 2019 (1 year 11 months)

Managed 500+ client interactions with zero escalations while supporting and maintaining critical security systems. Prevented potential incidents through vigilant monitoring and collaborated with teams to respond to security concerns per strict protocols.

Security Monitoring Collaboration Risk Mitigation