Principal Software Engineer ( C#, .NET, OOPS, Design Patterns, Angular, SQL, Windows Forms )

Vertafore is a leading technology company whose innovative software solution are advancing the insurance industry. Our suite of products provides solutions to our customers that help them better manage their business, boost their productivity and efficiencies, and lower costs while strengthening relationships.
Our mission is to move InsurTech forward by putting people at the heart of the industry. We are leading the way with product innovation, technology partnerships, and focusing on customer success.
Our fast-paced and collaborative environment inspires us to create, think, and challenge each other in ways that make our solutions and our teams better.
We are headquartered in Denver, Colorado, with offices across the U.S., Canada, and India.
JOB DESCRIPTION
We are seeking a highly skilled Principal Software Engineer - .NET Full Stack with 12-15 years of experience to lead complex enterprise-grade application development. This role requires deep expertise in C#, .NET, OOPS, Design Patterns, Angular, SQL, along with strong architectural leadership. Experience in MongoDB and AWS cloud services is a strong plus.
As a Principal Software Engineer, you will define architecture, drive engineering excellence, mentor teams, and ensure high‑quality, scalable system delivery.
Key Responsibilities
Technical Leadership

• Lead, architect, and oversee end‑to‑end .NET full‑stack solutions.
• Provide technical direction, decision-making, and guidance to the engineering team.
• Ensure alignment with enterprise architecture standards and long-term technology vision.

Architecture & Design

• Drive high-level and low-level architecture for distributed, scalable, and secure applications.

• Work closely with the Enterprise Architecture Team to align solutions with organizational architectural guidelines and long‑term technology strategy.

• Actively contribute to and influence key architectural decisions, ensuring proposed solutions consider scalability, resiliency, performance, and security requirements.
• Architect solutions using Clean Architecture, Layered Architecture, Domain‑Driven Design (DDD), or Microservices depending on business need.
• Ensure adherence to SOLID principles, design patterns, and architectural governance.
• Evaluate architectural risks, dependencies, performance implications, and maintainability early in project lifecycle.

Full-Stack Development

• Hands-on development using C#, ASP.NET Core, Windows Forms, and Angular.
• Build APIs, middleware, reusable services, and enterprise UI components.
• Ensure coding standards, modularity, and long-term maintainability.

Collaboration

• Work closely with Product Managers, UX, QA, DevOps, and cross-functional engineering teams.
• Collaborate with enterprise architects and cloud teams on strategic initiatives.

Code Reviews & Best Practices

• Conduct and enforce detailed code reviews.
• Promote the adoption of design patterns

Mentorship

• Mentor senior engineers, provide architectural coaching, and help build a strong engineering culture.

DevOps & Deployment

• Collaborate with DevOps to design CI/CD pipelines (Azure DevOps, Jenkins, GitHub Actions).
• Implement automation, quality gates, and infrastructure-as-code where applicable.

Innovation & Continuous Improvement

• Stay current with the latest in .NET, Angular, databases, cloud, containers, and observability.
• Drive innovation, POCs, and continuous improvement initiatives.

Required Technical Skills
Back-End Development (.NET)

• Expert in C#, ASP.NET Core, Windows Forms development.
• Deep understanding of OOPS, SOLID, async programming, and thread management.
• Experience architecting and building large-scale enterprise applications.

Architectural Skills

• Strong experience designing scalable, high-availability, cloud-compatible architectures.
• Expertise in:
• API design & service-oriented architecture
• Event-driven and asynchronous patterns
• Microservices and container-based deployments (Docker/Kubernetes - optional but valuable)
• Design documentation, UML
• Ability to review existing architecture, identify gaps, and propose target-state improvements.

Database Management

• SQL Server Expertise:
• Advanced SQL, indexing, query optimization
• Stored procedures, schema design, performance tuning
• MongoDB (Good to Have):
• Understanding of NoSQL modeling
• Experience with document design, indexing strategies, and aggregation pipelines
• Exposure to hybrid SQL + NoSQL solutions

Front-End Development (Angular)

• Strong experience with Angular 10+, TypeScript, RxJS, and component-driven UI architecture.
• Proficient in responsive UI building with HTML5, CSS3, SCSS, and Angular Material.

Cloud & Deployment

• AWS Cloud (Good to Have):
• Familiarity with AWS services.
• Understanding of cloud-native patterns, scalability concepts, and cost optimization.

AI-Assisted Development (Good to Have)

• Experience using GitHub Copilot or Microsoft 365 Copilot to improve development productivity and code quality.
• Ability to guide teams in adopting AI-assisted development tools effectively.

Testing

• Unit testing with xUnit/NUnit/MSTest.
• Familiarity with UI testing tools (Jasmine/Karma) is beneficial.

Version Control & CI/CD

• Expertise with Git workflows.
• Experience configuring CI/CD pipelines with Azure DevOps/Jenkins/GitHub Actions.

Performance & Security

• Conduct performance profiling, optimize memory/CPU usage, implement caching strategies.
• Apply OWASP security principles and secure coding practices across tiers.

Soft Skills
Leadership & Communication

• Proven leadership delivering high‑quality, enterprise-level systems.
• Strong ability to communicate architectural concepts to technical and non‑technical stakeholders.

Problem-Solving & Innovation

• Analytical thinker with a strong inclination toward simplifying complex systems.
• Ability to make trade-offs between short-term delivery and long-term architecture health.

Collaboration Tools

• Experience with JIRA, Azure Boards, Confluence, Teams.

Agile Methodologies

• Hands-on experience in Agile/Scrum environments.

Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or related field.

• 12-15 years of proven experience in C#, .NET, OOPS, Design Patterns, Angular, SQL, Windows Forms .

• Strong design and implementation skills for enterprise-grade applications.

• Experience with secure coding, scalability, cloud readiness, and performance optimization.

• Strong enthusiasm for coding, architecture, mentoring, and solving complex engineering problems.

• Have an intense passion for building software and mentoring their teams.

• Enjoy solving problems through the entire application stack.

• Are interested and capable of learning other programming languages as needed.

Why Vertafore is the place for you: *Canada Only

• The opportunity to work in a space where modern technology meets a stable and vital industry
• Medical, vision & dental plans
• Life, AD&D
• Short Term and Long Term Disability
• Pension Plan & Employer Match
• Maternity, Paternity and Parental Leave
• Employee and Family Assistance Program (EFAP)
• Education Assistance
• Additional programs - Employee Referral and Internal Recognition

Why Vertafore is the place for you: *US Only

• The opportunity to work in a space where modern technology meets a stable and vital industry
• We have a Flexible First work environment! Our North America team members use our offices for collaboration, community and team-building, with members asked to sometimes come into an office and/or travel depending on job responsibilities. Other times, our teams work from home or a similar environment.
• Medical, vision & dental plans
  • PPO & high-deductible options
• Health Savings Account & Flexible Spending Accounts Options:
  • Health Care FSA
  • Dental & Vision FSA
  • Dependent Care FSA
  • Commuter FSA
• Life, AD&D (Basic & Supplemental), and Disability
• 401(k) Retirement Savings Plain & Employer Match
• Supplemental Plans - Pet insurance, Hospital Indemnity, and Accident Insurance
• Parental Leave & Adoption Assistance
• Employee Assistance Program (EAP)
• Education & Legal Assistance
• Additional programs - Tuition Reimbursement, Employee Referral, Internal Recognition, and Wellness
• Commuter Benefits (Denver)

The selected candidate must be legally authorized to work in the United States.
The above statements are intended to describe the general nature and level of work being performed by people assigned to this job. They are not intended to be an exhaustive list of all the job responsibilities, duties, skill, or working conditions. In addition, this document does not create an employment contract, implied or otherwise, other than an "at will" relationship.
Vertafore strongly supports equal employment opportunity for all applicants regardless of race, color, religion, sex, gender identity, pregnancy, national origin, ancestry, citizenship, age, marital status, physical disability, mental disability, medical condition, sexual orientation, genetic information, or any other characteristic protected by state or federal law.
The Professional Services (PS) and Customer Success (CX) bonus plans are a quarterly monetary bonus plan based upon individual and practice performance against specific business metrics. Eligibility is determined by several factors including: start date, good standing in the company, and actives status at time of payout.
The Vertafore Incentive Plan (VIP) is an annual monetary bonus for eligible employees based on both individual and company performance. Eligibility is determined by several factors including: start date, good standing in the company, and actives status at time of payout.
Commission plans are tailored to each sales role but common components include quota, MBO's and ABPMs. Salespeople receive their formal compensation plan within 30 days of hire.
Vertafore is a drug free workplace and conducts preemployment drug and background screenings.
We do not accept resumes from agencies, headhunters or other suppliers who have not signed a formal agreement with us.
We want to make sure our recruiting process is accessible for everyone. if you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact [email protected]
Just a note, this contact information is for accommodation requests only.