Senior Software Architect for Modernization (Remote)

One Call; Denver (CO); Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work

Paid time off (18 days)

Benefits package

401(k) matching

Life insurance

Disability coverage

Colleague Assistance Program

One Call Foundation

Job summary

One Call seeks a Senior/Principal Software Engineer to provide architectural depth and hands-on leadership in a legacy-heavy environment modernizing its stack, with .NET, SQL Server, WinForms/Web Forms, and newer .NET Core, REST APIs, Azure DevOps, and JavaScript front-ends.

You will guide engineers, unblock teams, and deliver high-quality software across mission-critical applications in a remote-first, collaborative culture.

Qualifications

• 10+ years building enterprise .NET applications in C# (.NET Framework + .NET Core).
• Experience modernizing large legacy .NET codebases (service extraction, modularization, domain consolidation).
• Familiarity with Azure cloud services, logging, monitoring, and observability patterns.
• Experience in healthcare, workers' compensation, claims processing, or regulated industries.

Responsibilities

• Own and drive architecture and design discussions across multiple applications and services.
• Provide pragmatic, hands-on guidance to teams working across .NET, SQL, and mixed front-end stacks.
• Evaluate legacy architectures and propose modernization patterns (service boundaries, APIs, refactors, consolidation).
• Facilitate technical decision-making with crisp rationales, tradeoff analysis, and clear documentation.
• Champion engineering excellence: code quality, testing, CI/CD maturity, observability, and maintainability.

Skills

.NET

C#

VB.NET

SQL Server

Web Forms

ASP.NET MVC

REST APIs

Azure DevOps

JavaScript/TypeScript

PowerShell

CI/CD

Tools

Azure DevOps

SQL Server

WCF

Entity Framework

Bootstrap

Job description

One Call seeks a Senior/Principal Software Engineer to provide architectural depth and hands-on leadership in a legacy-heavy environment modernizing its stack, with .NET, SQL Server, WinForms/Web Forms, and newer .NET Core, REST APIs, Azure DevOps, and JavaScript front-ends.

You will guide engineers, unblock teams, and deliver high-quality software across mission-critical applications in a remote-first, collaborative culture.