Senior / Principal Engineer

Job Summary

The Senior/Principal Software Engineer provides architectural depth, delivery excellence, and hands-on leadership in a complex, legacy-heavy environment that’s actively modernizing. This role sits at the center of technical decision-making—driving clarity, unblocking teams, improving engineering practices, and delivering high-quality software across several mission-critical applications.

Essential Duties & 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.

• Elevate engineering practices through code reviews, pairing, and informal mentorship.

• Introduce and promote standards around branching strategy, trunk-based development, and CI/CD pipelines.

• Improve team problem-solving approaches—debugging, root-cause analysis, instrumentation.

• Leverage AI-assisted engineering tools (GitHub Copilot, ChatGPT, Azure OpenAI, etc.) to accelerate development, improve code quality, and enhance documentation—not as shortcuts, but as force multipliers.

• Help establish norms for AI usage across the team: when to use it, when not to, how to verify output, and how to integrate it safely into delivery pipelines.

• Build and maintain Azure DevOps pipelines (YAML, MSBuild, MSDeploy).

• Integrate automated testing frameworks (MSTest, NUnit, XUnit, Moq).

• Work with legacy build systems (Jenkins, Hudson/VSTS).

• Support application packaging using MSI, WiX, InstallShield, and ClickOnce.

• Script and automate workflows using PowerShell and Bash.

• Ability to diagnose and resolve complex production issues quickly.

• Ability to work in an environment that aligns with the company's diversity, equity, inclusion and belonging standards.

• Ability to work both independently and in a team environment.

• Demonstrate our core values of Think Big, Go Fast, Deliver Awe, Win Together and Care Deeply.

Essential Knowledge, Skills & Abilities

• 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.

• Experience maintaining VB.NET codebases.

• Deep experience with ASP.NET MVC, Web API, WCF, Web Forms, WinForms.

• Strong proficiency in SQL Server (T-SQL, performance tuning, SSIS, SSRS).

• Strong front-end fundamentals in JavaScript, TypeScript, HTML, CSS/SASS.

• Familiarity with jQuery, Knockout, and Kendo UI; required Bootstrap experience.

• Experience with ORMs (Entity Framework, LINQ, Dapper).

• Automated testing expertise with MSTest, NUnit, XUnit, Moq.

• Azure DevOps pipelines, repos, gated builds, YAML.

• PowerShell and Bash scripting.

• Ability to diagnose and resolve complex production issues quickly.

• Ability to work in an environment that aligns with the company's diversity, equity, inclusion and belonging standards.

• Ability to work both independently and in a team environment.

• Demonstrate our core values of Think Big, Go Fast, Deliver Awe, Win Together and Care Deeply.