Senior / Principal Software Engineer

Note

The job is a remote job and is open to candidates in USA. One Call is a company focused on delivering care to injured workers, and they are seeking a Senior/Principal Software Engineer to provide architectural depth and hands-on leadership in a modernizing environment. This role involves driving technical decision-making, guiding engineers, and delivering high-quality software across mission-critical applications.

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
• Model responsible, high-impact use of AI by using it for pattern detection, refactoring scaffolds, test generation, API documentation, and reducing cognitive load on repetitive work
• 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

Skills

• 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

Benefits

• Remote Work: We are a remote-first company, and almost all positions receive the flexibility of working from home.
• Generous Time Off: Besides 8 company holidays and 2 personal days every year, all colleagues receive a minimum of 18 days of paid time off.
• Comprehensive Benefits Package: Including medical, dental, vision, and pet insurance; 401(k) matching program; and company-paid life insurance and short and long-term disability coverage.
• Supportive Services: Just like our colleagues get injured workers the care they need when they need it, we want to do the same for our colleagues in their time of need. We offer a Colleague Assistance Program that provides free counseling and financial services, and our One Call Foundation, a non-profit arm of our company, provides colleagues financial assistance during times of unexpected hardships.

Company Overview

• One Call is redefining the Workers’ Compensation ecosystem by unifying ancillary care through one trusted, technology-enabled partner. It was founded in 1993, and is headquartered in Jacksonville, Florida, USA, with a workforce of 1001-5000 employees. Its website is https://onecallcm.com.

Company H1B Sponsorship

• One Call has a track record of offering H1B sponsorships, with 1 in 2020. Please note that this does not guarantee sponsorship for this specific role.