Specialist Application Engineer (PHP, Golang)


The FinTech 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 Specialist Application Engineer to join our growing team. While our Specialist 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 Specialist 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 application

  • 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 (javascript, 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

Preferred Skills

  • Experience scaling real-time high availability APIs

  • Experience integrating with payment gateways and processors (Stripe, Elavon, Authorize.Net, NMI, USAePay, WorldPay, 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 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 500,000 providers, 1,000 health systems and hospitals, and 5,000 payers and health plans. For more information, visit waystar.com or follow @Waystar on Twitter.  


  • Competitive total rewards (base salary + bonus, if applicable)
  • Customizable benefits package (3 medical plans with Health Saving Account company match)
  • Generous paid time off starting at 3 weeks + 13 paid holidays including 2 personal floating 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.

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