Senior Software Architect - Remote & Hands-On Leader

One Call; Atlanta (GA); Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Remote work (remote-first)

Generous time off: 18 days + holidays

Comprehensive benefits: medical/dental

401(k) matching program

Company-paid life insurance & short/ll

Colleague Assistance Program

One Call Foundation assistance

Job summary

One Call seeks a Senior/Principal Software Engineer to drive architecture and delivery in a legacy-heavy environment that is actively modernizing. You will guide engineers, challenge assumptions, and balance tradeoffs to accelerate reliable software across .NET, SQL Server, WinForms/Web Forms, and modern .NET Core, REST APIs, and front-end stacks.

You will contribute code, help shape CI/CD, testing, and observability practices while collaborating with Product, QA, and Design to ensure

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.
• Unblock teams quickly by diagnosing issues across the entire stack (app, API, data, infrastructure).
• Collaborate with Product, QA, Design, and other engineering teams to ensure predictable delivery.
• Translate complex requirements into executable technical plans, work breakdowns, and sequencing.
• Identify risks early and recommend options that balance delivery velocity with long-term stability.
• Contribute high-quality code in .NET (.NET Framework, .NET Core), C#, and VB.NET where necessary.
• Build and enhance web apps using ASP.NET MVC, Web API, Web Forms, and WinForms.
• Develop and optimize SQL Server objects (stored procedures, SSIS packages, ETL pipelines, reporting).
• Implement robust APIs, REST services, Windows Services, and data-access layers.
• Work across JavaScript/TypeScript, jQuery, Knockout, Bootstrap, and related UI frameworks.

Skills

C#

ASP.NET

VB.NET

SQL Server

JavaScript/TypeScript

Azure DevOps

CI/CD

Code reviews

Mentorship

Observability

Tools

Azure DevOps

MSTest

NUnit

XUnit

Moq

Job description

One Call seeks a Senior/Principal Software Engineer to drive architecture and delivery in a legacy-heavy environment that is actively modernizing. You will guide engineers, challenge assumptions, and balance tradeoffs to accelerate reliable software across .NET, SQL Server, WinForms/Web Forms, and modern .NET Core, REST APIs, and front-end stacks.

You will contribute code, help shape CI/CD, testing, and observability practices while collaborating with Product, QA, and Design to ensure