Remote Principal Software Engineer - Modernization Leader

One Call; Dover (DE); Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Remote work

Generous time off

Comprehensive benefits

Supportive services

Job summary

One Call is seeking a Senior/Principal Software Engineer to provide architectural depth and leadership in a large, legacy-heavy environment that is actively modernizing. You will guide engineers across .NET, SQL Server, WinForms/Web Forms, and modern .NET Core, REST APIs, Azure DevOps, and frontend stacks.

This remote-first role emphasizes hands-on coding, architectural decisions, and mentoring, with opportunities to influence technical direction and delivery across mission-critical

Qualifications

• 10+ years building enterprise .NET applications in C# (.NET Framework + .NET Core).
• Experience modernizing large legacy .NET codebases and Azure cloud services.
• Healthcare, workers' compensation, or regulated industries experience preferred.
• Strong front-end fundamentals and modern UI frameworks.

Responsibilities

• Own and drive architecture and design discussions across multiple applications.
• Unblock teams by diagnosing issues across the stack (app, API, data, infra).
• Contribute high-quality code in .NET/C# and modern front-end tech.
• Lead engineering practices, CI/CD, and test automation efforts.
• Build and maintain Azure DevOps pipelines and tooling.

Skills

C#/.NET

ASP.NET MVC

Web API

WCF

Web Forms

WinForms

VB.NET

SQL Server

T-SQL

SSIS

SSRS

JavaScript

TypeScript

HTML/CSS

Bootstrap

jQuery

Knockout

Kendo UI

Entity Framework

LINQ

Dapper

MSTest

NUnit

XUnit

Moq

Azure DevOps

PowerShell

Bash

Azure Cloud

Healthcare domain

Event-driven architecture

Tools

Azure DevOps

Jenkins

Hudson

TFS / VSTS

MSBuild

Job description

One Call is seeking a Senior/Principal Software Engineer to provide architectural depth and leadership in a large, legacy-heavy environment that is actively modernizing. You will guide engineers across .NET, SQL Server, WinForms/Web Forms, and modern .NET Core, REST APIs, Azure DevOps, and frontend stacks.

This remote-first role emphasizes hands-on coding, architectural decisions, and mentoring, with opportunities to influence technical direction and delivery across mission-critical