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Senior Software Engineer - Payment Solutions

WellfitIrving, TX
On-site Full-time $130K/yr - $150K/yr

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Experience Level

Senior

Qualifications

Bachelor’s degree in Computer Science, Engineering, or related field.4+ years of professional software engineering experience. Proficiency in . NET backend development. Experience with cloud development (Azure preferred). Demonstrated ability to integrate external APIs and services. Strong understanding of secure coding principles and compliance requirements for handling sensitive data.

About the job

Location: Irving, TX

About Wellfit

Wellfit builds fintech solutions for the dental industry, connecting patients, providers, employers, and payors. The company aims to remove financial barriers so more people can access essential dental care.

Role Overview

The payments engineering team at Wellfit is growing. This Senior Software Engineer position focuses on backend and cloud development for payment systems. The role centers on building and maintaining payment infrastructure, integrating new payment methods, and upholding strict security standards. Projects here have a direct impact on how patients and providers manage payments for care.

What You Will Do

  • Design, develop, and maintain backend services using . NET and Azure cloud.
  • Lead payment initiatives, including:
    • Expanding ACH features for practices and recurring billing.
    • Improving card payment processes such as authorization, capture, and settlement.
    • Supporting device-based payment options (for example, Tap to Pay on iOS).
    • Exploring modern payment options like network tokens and bank verification.
  • Apply secure coding practices to protect and log sensitive financial data.
  • Modernize and refactor microservices for better scalability and performance.
  • Work closely with architects, engineers, and product stakeholders to align solutions with business needs.
  • Help address technical debt and build resilient systems that can handle growing transaction volumes.

Required Qualifications

  • Bachelor’s degree in Computer Science, Engineering, or a related field.
  • At least 4 years of professional experience in software engineering.
  • Strong . NET backend development skills.
  • Experience with cloud development (Azure preferred).
  • Proven ability to integrate external APIs and services.
  • Solid understanding of secure coding practices and compliance for sensitive data.

Preferred Qualifications

  • Background in the payments industry (ACH, card processing, settlement, Worldpay integration, etc.).
  • Familiarity with microservices architecture and distributed systems.
  • Experience scaling payment transaction systems for higher throughput.

About Wellfit

Wellfit is a pioneering fintech solution in the dental industry, dedicated to facilitating seamless financial experiences for patients, providers, employers, and payors. Our mission is to eliminate financial barriers, ensuring that everyone has access to the treatment and care they need.

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