Senior Software Engineer, Payments

Wellfit Technologies; Irving (TX); Hybrid; USD 130,000 - 150,000; Full time

Benefits offered by this job

401(k) matching

Bonus eligibility

Comprehensive health benefits

Paid time off

Job summary

Wellfit is expanding its payments engineering team to deliver secure, scalable payment solutions for patients, providers, employers, and payors. We seek a Senior Software Engineer with strong .NET backend and Azure cloud experience to help build and maintain payments infrastructure and integrate new methods.

You will contribute from design to deployment, focusing on secure coding and compliance while collaborating with cross-functional teams to handle growing transaction volumes and evolving

Qualifications

• Bachelor's degree in CS or related field.
• 4+ years of professional software engineering experience.
• Strong backend .NET development and Azure cloud experience.
• Experience with secure coding and compliance requirements for handling sensitive data.

Responsibilities

• Design, develop, and maintain backend services with a focus on .NET and Azure cloud environments
• Expand ACH features for practices and recurring billing
• Enhance card payments with authorization, capture, and settlement
• Support device-based payments (Tap to Pay for iOS)
• Collaborate with architects, engineers, and product stakeholders to align solutions with business needs
• Drive secure coding practices and modernize microservices for scalability

Skills

Backend development

Azure cloud

API integration

Security & compliance

Education

Bachelor’s degree in Computer Science or related field

Tools

.NET backend

Azure

Job description

Wellfit is the dental industry’s fintech solution! A healthcare fintech company that enhances experiences between patients, providers, employers and payors. Wellfit provides access to treatment and care of all by removing financial barriers.

About the Role:

Wellfit is expanding its payments engineering team to support the growing demand for secure, scalable, and innovative payment solutions. We are seeking a Senior Software Engineer with strong backend and cloud development experience, ideally with exposure to payment systems. This role will contribute to building and maintaining our payments infrastructure, integrating new payment methods, and ensuring compliance with security standards. You’ll join a collaborative team that values precision, security, and scalability in code. This is an opportunity to shape the future of Wellfit’s payment capabilities while working on projects with real-world impact.

Responsibilities:

• Design, develop, and maintain backend services with a focus on .NET and Azure cloud environments
• Contribute to payment-related initiatives, including:
• Expanding ACH features for practices and recurring billing
• Enhancing card payments with authorization, capture, and settlement
• Supporting device-based payments (e.g., Tap to Pay for iOS)
• Exploring modernized payment methods (e.g., network tokens, bank verification)
• Drive secure coding practices, ensuring sensitive financial data is handled and logged properly
• Participate in breaking down and modernizing microservices for improved scalability and throughput
• Collaborate with architects, engineers, and product stakeholders to align solutions with business needs
• Contribute to resolving technical debt and building resilient systems to support increased transaction volume

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 servicesStrong understanding of secure coding principles and compliance requirements for handling sensitive data

Preferred:

• Payments industry experience (ACH, card processing, settlement, Worldpay integration, etc.)
• Exposure to microservices architecture and distributed systems
• Experience with scaling throughput in payment transaction systems
• Familiarity with modern payment methods (Apple Pay, Google Pay, network tokens)

Compensation & Benefits:

• Competitive salary range: $130,000 – $150,000+, depending on experience and payments expertise
• Comprehensive benefits package [insert details if available]
• Opportunities for professional growth and cross-team collaboration

Why Wellfit?

• Make an Impact: Your work will directly shape the financial backbone of one of the most innovative healthcare fintech companies in the U.S
• Work Flexibly: Hybrid model based in Dallas with 3 days/week in-office
• Comprehensive Benefits: Full medical, dental, vision, and generous PTO
• Invest in Your Future: Competitive salary, bonus eligibility, and 401(k) matching
• Fast-Growth Environment: A rare opportunity to grow with a profitable startup on a national trajectory

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Alongside a competitive annual bonus, we offer a 401(k) with up to a 4% match, generous paid time off, and comprehensive healthcare benefits.