Principal Engineer

Description & Requirements Join Our Team and Make a Difference! Are you looking for an impactful role where you finish the workday knowing you helped someone? Whether you are part of our care coordination team or play a supporting role, the work our colleagues do every day enables us to collectively reach our mission of getting people the care they need when they need it.

By staying committed to our core values of Think Big, Go Fast, Deliver Awe, Win Together and Care Deeply,we can positively impact the lives of the injured workers we serve and get them back to the things that matter most in life.

Salary Range:
This compensation range considers a wide range of factors, including, but not limited to, skill set, experience and training, licensure and certifications, and other business and organizational needs. The disclosed range estimate is not adjusted for geographic differential associated with the location where the position may be filled. At One Call, it is not typical for an individual to be hired at or near the top of the range for their role, and compensation decisions are dependent on the facts and circumstances of each case.

• 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.

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. This is not a people‑management role, but it is a high‑influence technical leadership position. You'll guide engineers, challenge assumptions, simplify complexity, and make pragmatic tradeoffs that accelerate predictable delivery.

Our environment includes substantial .NET, SQL Server, Win Forms/Web Forms, and  footprints alongside more modern .NET Core, REST APIs, Azure Dev Ops, and JavaScript/Type Script front‑ends. You should be equally comfortable operating in both worlds.

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…