Application Engineer
Listed on 2026-02-16
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Software Development
Software Engineer, Backend Developer
ABOUT THIS POSITION
The Fin Tech team is responsible for building and managing real-time APIs, both for our integrating partners, and payment processing industry vendors. The team is also responsible for building and managing the core system logic to batch payment data and integrate with the banking system for funding and accounting. The team builds internal tools to manage merchant onboarding and payment exception handling.
Right now, we are looking for an outstanding, brilliant, and driven Application Engineer to join our growing team. While our Application Engineers are involved in multiple things throughout the Technology organization, primarily they are responsible for working with the Technology and the Business teams to design, build, and implement amazing web and process applications. These Team Members are also charged with assisting the Client Success department in resolving issues relating to production processes.
The Application Engineer is responsible for troubleshooting and resolving technical issues as well.
Proposes technical solutions to the Manager, Application Engineering
Designs/develops/tests/implements improvements or new features into the Waystar website and core processing applications
Responsible for developing/augmenting applications based on the functional and technical specifications
Responsible for adhering to Waystar coding standards and the approved technologies, and proposing amendments to either when necessary
Unit tests all changes on development, and then works with the appropriate Business and/or Technology Owner(s) to ensure that the developed solution meets the business requirements
Communicates the development progress daily to the senior-level team members
Attends to any work items assigned through the internal case system in a timely fashion
Takes ownership of work items assigned, communicates estimates and daily progress as part of the SDLC process, and actively works to resolve issues blocking progress
Assists in the QA process
Participates, as required, in Production Code Turn days, providing instructions for deploying the code changes successfully, and for Smoke Testing code post-release
Develops and maintains open and fluid communication with Management
Develops and maintains a positive relationship with other team members
Assists in the creation and/or approving of technical specifications
Assists in identifying areas in the application that need to be refactored
Works with the various departments and team members to design and/or implement various new enhancements to the existing web application.; this includes, but is not limited to, SQL table design, SQL stored procedure design, and process design in the designated programming language
Tracks any changes required by such development using internal tools, and communicates to the QA Team any abnormalities required to push the changes from development through the various stages to production
Identifies and informs the Manager, Application Engineering of areas of the application that can be improved by refactoring, optimization, or other improved technology solutions
Notifies the Manager, Application Engineering of any problems that negatively impact applications, and works to implement a solution
Communicates and works with the Manager, Application Engineering to reassign any items that cannot be addressed in a timely fashion
Provides estimates for project tasks using an internal project tool, and updates the estimates if they increase or decrease
Additional duties as assigned
Experience with statically typed / compiled languages (c#, java, c, go)
Experience with dynamically typed / interpreted languages (java script, python, php)
Experience with Relational Databases (sql server, mysql, postgres)
Experience with cloud technologies (aws, gcloud, azure)
Experience with Version Control (git)
Experience with Unit and Integration Testing Methodologies
Experience building highly-scalable software solutions
Excellent written and verbal communication skills
Ability to work in a fast-paced environment & welcome change
Highly self-motivated
Skills:
Experience scaling real-time high availability APIs
Experience integrating with payment gateways and processors (Stripe, Elavon, , NMI, USAePay, World Pay, TSYS, etc)
Experience with finance and banking processes and concepts (merchant accounts, ACH, settlement, etc)
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…
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