Waystar Tech Stack

Healthcare payment platform processing 5B+ annual transactions for 30K providers

Software Development Louisville, Kentucky 1,001–5,000 employees Public Company

Waystar operates a large-scale healthcare payment platform serving roughly 30,000 clients representing over 1 million providers, processing more than 5 billion transactions annually and spanning approximately 60% of U.S. patients. The tech stack mixes legacy healthcare integrations (Epic, Cerner, FHIR, EDI) with modern cloud infrastructure (AWS, Kubernetes, Java, Go), while active adoption of fine-tuning frameworks (Llama, LoRA, QLoRA) and data governance tools (Microsoft Purview, Varonis) reveals a push toward AI-powered automation and compliance at scale. Engineering dominance in hiring reflects the operational complexity of managing healthcare claims workflows and extracting signal from unstructured clinical documentation.

Tech Stack 133 technologies

Core StackLinux MySQL PHP Java .NET Ruby Go JavaScript Angular Vue Kubernetes AWS Jenkins Jira Confluence Salesforce Epic Systems Power BI NetSuite Bamboo Outlook Excel EDI Word FHIR Cerner Experian UltraEdit Adobe Acrobat LinkedIn Learning+100 more

AdoptingEpic Systems Microsoft Purview Varonis Mistral Llama LoRA QLoRA Cerner

What Waystar Is Building

◆Challenges

Simplify healthcare payments
Streamlining healthcare payment workflows
Improving financials
Streamline workflows
Extracting meaning from unstructured clinical documentation
Financial improvement
Data file integration
Inefficient revenue cycle
Complex healthcare payments
Production process issues

▲Active Projects

Machine learning platform development
Reliability solutions for data pipelines
Aware cdi
Waystar revenue cycle implementations
Waystar website and core processing applications
Patient financial care solution implementation
Customer onboarding rollout
Implementation of waystar solutions
Data engineering solutions for model training
Automation for deployment and monitoring

Hiring Activity

Steady180 roles · 70 in 30d

Department

Engineering

Support

Sales

Product

Data

Marketing

Finance

Security

Seniority

Senior

Mid

Intern

Manager

Junior

Director

Principal

Notable leadership hires: Director

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About Waystar

Waystar builds enterprise software for healthcare providers to manage revenue cycles, patient payments, and claims processing. The platform addresses workflows across financial clearance, denial management, and patient financial experience, with integrations into major EHR systems like Epic and Cerner. As a public company with 1,001–5,000 employees headquartered in Louisville, Kentucky, Waystar processes over $2.4 trillion in annual gross claims and includes 16 of 20 institutions on the U.S. News Best Hospitals Honor Roll among its customer base. The company's product strategy centers on simplifying payment flows so providers can allocate resources toward patient care rather than administrative overhead.

HeadquartersLouisville, Kentucky

Company Size1,001–5,000 employees

Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Waystar use?

Waystar runs on Linux, MySQL, AWS, Kubernetes, and Java, with JavaScript/Angular/Vue frontends and EDI/FHIR for healthcare integration. Supporting tools include Salesforce, Jenkins, Jira, and Power BI. Currently adopting Mistral, Llama, LoRA, QLoRA for ML platform development.

How many patients does Waystar reach?

Waystar's platform spans approximately 60% of U.S. patients through its 30,000 client base and over 1 million distinct providers, processing 5 billion healthcare payment transactions annually.