Sr. Software Engineer II

· Remote

Location

Remote

Type

Full Time

Job Description

Sr. Software Engineer II

Posted Yesterday
Be an Early Applicant
Louisville KY USA
In-Office
Senior level
Healthtech • Payments • Software
The Role
Design develop and maintain scalable software applications in a microservices architecture using C# and .NET collaborating with teams troubleshooting issues and mentoring junior developers.
Summary Generated by Built In

ABOUT THIS POSITION

Design develop test deploy and maintain robust and scalable software applications and services on the Waystar Claims platform. You will work across C#/.NET microservices event-driven messaging cloud-native Kubernetes infrastructure and SQL Server data tiers to deliver high-quality high-performance healthcare revenue cycle solutions.

WHAT YOU'LL DO

Responsibilities 

  • Design develop test deploy and maintain robust and scalable software applications and services using C#/.NET. 

  • Collaborate with product owners architects and other stakeholders to translate business requirements into technical specifications and actionable development plans. 

  • Write clean efficient well-documented and maintainable code adhering to Waystar's coding standards and best practices. 

  • Participate in code reviews providing constructive feedback and ensuring high code quality. 

  • Troubleshoot and debug complex software issues identifying root causes and implementing effective solutions. 

  • Contribute to the continuous improvement of Waystar's software development processes tools and infrastructure. 

  • Mentor junior engineers and share knowledge within the team fostering a culture of learning and growth. 

  • Develop and maintain automated tests (unit integration and end-to-end) to ensure software reliability and stability. 

  • Monitor application performance using Splunk and other observability tools; identify bottlenecks and implement optimizations to enhance user experience. 

  • Stay current with emerging technologies and industry trends evaluating and recommending new approaches and tools. 

  • Contribute to the architectural design of new features and systems ensuring scalability security and maintainability. 

WHAT YOU'LL NEED

Required Qualifications 

  • Bachelor's or Master's degree in Computer Science Software Engineering or a related technical field. 

  • 7+ years of professional software development experience with a proven track record of delivering high-quality software. 

  • Expertise in C# and .NET (both .NET 8 and .NET Framework); strong understanding of the .NET ecosystem and CLR. 

  • Strong understanding of data structures algorithms and object-oriented and SOLID design principles. 

  • Experience with SQL Server — schema design stored procedures query optimization and performance tuning. 

  • Experience designing and building microservices and distributed systems using asynchronous message-based architectures (e.g. RabbitMQ). 

  • Solid understanding of software development best practices including Agile methodologies CI/CD (Azure DevOps Pipelines) and test-driven development (TDD). 

  • Experience with containerization and container orchestration: Docker Kubernetes and Helm chart authoring and deployment. 

  • Familiarity with Git-based version control and GitHub pull request workflows. 

  • Excellent problem-solving analytical and critical thinking skills. 

  • Strong communication and interpersonal skills with the ability to collaborate effectively with cross-functional teams. 

  • Ability to work independently and manage multiple priorities in a fast-paced environment. 

Nice to Have 

  • Experience with Redis for distributed caching. 

  • Experience with Snowflake Big Query or similar cloud data warehouse technologies. 

  • Familiarity with structured logging and observability tools such as Splunk. 

  • Knowledge of X12 EDI healthcare transaction standards (837 claim submission 835 remittance advice 270/271 eligibility inquiry/response). 

  • Knowledge of healthcare IT standards (e.g. HL7 FHIR) or prior experience in the healthcare revenue cycle industry. 

ABOUT WAYSTAR

Through a smart platform and better experience Waystar helps providers simplify healthcare payments and yield powerful results throughout the complete revenue cycle.

Waystar’s healthcare payments platform combines innovative cloud-based technology robust data and unparalleled client support to streamline workflows and improve financials so providers can focus on what matters most: their patients and communities. Waystar is trusted by 1M+ providers 1K+ hospitals and health systems and is connected to over 5K commercial and Medicaid/Medicare payers.  We are deeply committed to living out our organizational values: honesty; kindness; passion; curiosity; fanatical focus; best work always; making it happen; and joyful optimistic & fun.

Waystar products have won multiple Best in KLAS® or Category Leader awards since 2010 and earned multiple #1 rankings from Black Book™ surveys since 2012. The Waystar platform supports more than 500000 providers 1000 health systems and hospitals and 5000 payers and health plans. For more information visit waystar.com or follow @Waystar on Twitter.  

WAYSTAR PERKS

  • Competitive total rewards (base salary + bonus if applicable)
  • Customizable benefits package (3 medical plans with Health Saving Account company match)
  • We offer generous paid time off for our non-exempt team members starting with 3 weeks + 13 paid holidays including 2 personal floating holidays. We also offer flexible time off for our exempt team members + 13 paid holidays
  • Paid parental leave (including maternity + paternity leave)
  • Education assistance opportunities and free LinkedIn Learning access
  • Free mental health and family planning programs including adoption assistance and fertility support
  • 401(K) program with company match
  • Pet insurance
  • Employee resource groups

Waystar is proud to be an equal opportunity workplace. We celebrate value and support diversity and inclusion. Qualified applicants will receive consideration for employment without regard to race color religion age sex national origin disability status genetics marital status protected veteran status sexual orientation gender identity or expression or any other characteristic protected by federal state or local laws.

This applies to all terms and conditions of employment including recruiting hiring placement promotion termination layoff recall transfer leaves of absence compensation and training.

Top Skills

.Net
.Net 8
.Net Framework
Azure Devops
C#
Docker
Kubernetes
RabbitMQ
Splunk
SQL Server
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The Company
HQ: Louisville KY
967 Employees
Year Founded: 2018

What We Do

Waystar provides market-leading technology that simplifies and unifies healthcare payments. Our cloud-based platform streamlines workflows and improves financials for healthcare providers of all kinds and brings more transparency to the patient financial experience. The Waystar platform is used by more than 450k providers 750 health systems and hospitals and 5k health plans—and integrates with all major HIS and practice management systems. The financial and administrative challenges facing healthcare providers are daunting. Waystar’s technology platform simplifies and unifies healthcare payments across the revenue cycle. We empower healthcare organizations to automate manual work gain insight into processes and performance and ultimately collect more revenue. At Waystar we know there’s a better more efficient way forward. Let’s climb the mountain ahead of us to reach new heights in healthcare.

Waystar Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: 3 days a week
HQLouisville KY
Duluth GA
Lehi
Learn more

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Date Posted

04/16/2026

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