Senior Principal Software Architect — Remote

One Call; Montpelier (VT); Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work

PTO 18 days

Medical and dental

Vision care

401(k) match

Life insurance

Disability coverage

Counseling services

One Call Foundation support

Job summary

One Call is seeking a Senior/Principal Software Engineer to bring architectural depth and hands-on leadership to a legacy-heavy environment undergoing modernization. You will guide teams across .NET, SQL Server, WinForms/Web Forms and newer .NET Core, REST APIs, and front-end stacks, while shaping technical decisions and governance.

This remote-first role emphasizes delivering high-quality software, improving engineering practices, and mentoring teammates in a collaborative, policy-driven

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.
• Experience with distributed queues, messaging patterns, event-driven architecture.

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

Technical Leadership

Architecture

C# .NET

SQL Server

Front-end JS/TS

Azure DevOps

Mentorship

CI/CD

Tools

ASP.NET MVC

Web API

WCF

WinForms

VB.NET

SQL Server

Azure

Job description

One Call is seeking a Senior/Principal Software Engineer to bring architectural depth and hands-on leadership to a legacy-heavy environment undergoing modernization. You will guide teams across .NET, SQL Server, WinForms/Web Forms and newer .NET Core, REST APIs, and front-end stacks, while shaping technical decisions and governance.

This remote-first role emphasizes delivering high-quality software, improving engineering practices, and mentoring teammates in a collaborative, policy-driven