Open to opportunities

Jeremy Colgan

@jeremycolgan

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Senior .NET Full-Stack Developer building secure microservices, cloud-native systems, and AI-powered workflows.

United States

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What I'm looking for

I’m looking for a remote-friendly role where I can modernize .NET systems, build scalable APIs and event-driven services, and use AI/LLMs to automate workflows—while mentoring engineers in an Agile, high-ownership culture.

I’m a results-driven Senior .NET Full-Stack Developer with 12+ years designing, developing, and modernizing enterprise-scale applications across finance, insurance, e-commerce, and SaaS. I focus on scalable backend systems and secure interfaces—delivering reliable RESTful APIs, microservices, distributed systems, and event-driven architectures.

In my most recent role, I designed and integrated AI/LLM-powered services using C#, .NET, ASP.NET Core, Azure Service Bus, and SQL Server to automate business workflows and deliver contextual responses with secure, dependable architectures. I also optimized high-performance services through caching with Redis, tuned complex SQL and T-SQL, and improved platform observability with Application Insights, distributed tracing, and structured logging.

I bring a strong engineering and delivery mindset: building resilient messaging solutions, integrating real-time WebSocket updates, and shipping faster with CI/CD pipelines that reduced deployment time by 60%. I enjoy mentoring engineers through architecture discussions and code reviews, partnering in Agile/Scrum environments, and continuously modernizing legacy .NET applications to .NET Core/.NET.

Experience

Work history, roles, and key accomplishments

Current

Sr. Software Engineer

Current

Lighthouse

Jan 2023 - Present (3 years 6 months)

Designed and integrated AI/LLM-powered services and secure, high-volume backend systems using C#, .NET, ASP.NET Core, Azure Service Bus, and SQL Server. Built resilient, event-driven microservices with strong observability, performance tuning, and CI/CD, and delivered responsive UI with Angular and Tailwind CSS.

Sr. Software Engineer

FinQuery (Formerly LeaseQuery)

Sep 2018 - Dec 2022 (4 years 3 months)

Developed backend microservices and enterprise APIs for a lease accounting and financial compliance SaaS platform. Built React/TypeScript UI components and supported secure integrations using OAuth 2.0, OpenID Connect, and JWT, along with containerized deployments using Docker and Kubernetes.

Software Engineer

SimForm

May 2015 - Aug 2018 (3 years 3 months)

Delivered custom enterprise web applications and digital transformation initiatives across multiple industries. Implemented .NET backend services, modernized legacy ASP.NET applications to .NET Core, built responsive front ends, and supported integrations and CI/CD for client deployments.