At Jack Henry, we’re more than a technology company, we’re a force for good in financial services. We’re redefining how community banks and credit unions connect with the people they serve. Our mission is rooted in people inspired innovation, empowering financial institutions to deliver seamless, secure, and human centered experiences. We deliver cutting-edge solutions that are paving the way for the next generation of digital banking and payments, but our true impact begins with our associates. If you're ready to help transform an industry and grow with a company that values purpose, collaboration, and excellence then we’d love to meet you. 

Jack Henry, provides advanced bill payment and money transfer solutions to banks and credit unions. We offer modernized smart technology, including AI driven, security, cloud-based software, and fraud monitor, to deliver engaging payment solutions to customers. Our solutions help financial institutions to meet the payment expectations of today and the payment innovation needs of tomorrow. Payments become smarter, engaging, and predictive with Payrailz.

This is a full time, fully remote position for an experienced C# .NET Backend Developer with hands on online payment integration experience. In this role, you will design, develop, and maintain backend API applications and batch processing systems. You'll collaborate closely with a team of engineers to deliver high performance, scalable, and secure solutions that meet evolving customer and business needs.

This position may be worked remotely within the United States, with the exception of California. 

This position is ineligible for immigration sponsorship and support. Please do not apply if at any time you will need immigration support now or in the future (i.e., H-1B, STEM OPT Training Plans, etc.). 

All positions, regardless of location, may require an onsite interview or in-person onboarding requirement to verify your identity. 

What you’ll be responsible for: 

• You’ll join the Payment Processing team to shape critical systems used by customers every day.
• You’ll work with a modern tech stack—including .NET, MySQL, cloud‑based architectures, and emerging AI tools—to build smarter, faster, and more reliable solutions.
• Define or refine standards for the design and development of API and backend processes. 
• Designing and developing backend processes using .NET C# and MySQL based on business requirements.
• Working closely with developers, QA, operations, and leadership throughout analysis, design, development, testing, deployment, and production support.
• Building and testing payment processing software that follow best practices and deliver reliable performance.
• Preparing test plans and clear technical documentation.
• Performing unit, integration, regression testing, and monitoring to ensure quality.
• Following established development standards and contributing to ongoing process improvements.
• Provide on-call production support, investigating technical issues and delivering effective solutions.
• Participating in daily Agile stand‑ups and collaborating in an iterative development environment.

What you’ll need to have: 

• Bachelor’s degree in Business, Software Engineering, Computer Science, or a related field.
• 6+ years of software development experience, including 3+ years building APIs in .NET/C# and working with relational database stored procedures and functions.
• Strong experience in API design, stored procedure development, batch programming and SQL performance tuning.
• Experience leveraging AI tools and techniques to enhance software development, testing, and maintenance workflows.
• Familiarity with Orleans (Microsoft Orleans framework).
• Ability to translate business requirements into database changes and high‑quality API solutions.
• Experience defining test cases, documenting results, and supporting integration automation.
• Solid understanding of relational database design and physical implementation.
• Skilled in diagnosing API issues, performing root‑cause analysis, and optimizing SQL performance.

What would be nice for you to have: 

• Strong proficiency in backend API development and batch programming.
• Extensive experience with C# and the .NET ecosystem.
• Proven experience integrating online payment systems and working with banking and payment gateways.
• Experience leveraging AI tools and techniques to enhance software development, testing, and maintenance workflows.
• Familiarity with Orleans (Microsoft Orleans framework).
• Solid understanding of Object Oriented Programming (OOP) principles and best practices.
• Excellent analytical thinking and problem-solving abilities.
• Proficiency with MySQL and SQL Server, including database schema design.
• Bachelor's or Master's degree in Computer Science or a related field, or equivalent professional experience

If you got this far, we hope you're feeling excited about this opportunity. Even if you don't feel you meet every single requirement on this posting, we still encourage you to apply. We’re looking for passionate, driven individuals who align with our mission and can bring unique perspectives to our team. 

Why Jack Henry? 

At Jack Henry, we live by the motto: “Do the right thing, do whatever it takes, and have fun.” It’s more than a tagline, it’s the foundation of our culture. We recognize that our associates are the key to our success, and we’re deeply committed to their wellbeing. That’s why we offer comprehensive benefits designed to support your physical, mental, and financial health so you can thrive both personally and professionally. 

We’re also leading the way in technology modernization, helping financial institutions evolve with speed, security, and flexibility. Our strategy focuses on delivering secure data access, mitigating fraud, and enabling seamless integration. Empowering our teams to build innovative solutions that meet the evolving needs of accountholders. 

Culture of Commitment 

Ask our associates why they love Jack Henry, and many will tell you it is because our culture is exceptional. We do great things together. Our culture empowers us to rise to challenges, seek new opportunities, and support one another through change. It’s this shared commitment that drives our success. We’re proud to foster an environment where inclusion, sustainability, and community impact are more than values, they’re how we operate. Visit our Corporate Sustainability site to learn more about our culture and commitment to our people, customers, community, environment, and shareholders. 

Equal Employment Opportunity 

At Jack Henry, we know we are better together. We value, respect, and protect the uniqueness each of us brings. Innovation flourishes by including all voices and makes our business - and our society - stronger. Jack Henry is an equal opportunity employer and we are committed to providing equal opportunity in all of our employment practices, including selection, hiring, performance management, promotion, transfer, compensation, benefits, education, training, social, and recreational activities to all persons regardless of race, religious creed, color, national origin, ancestry, physical disability, mental disability, genetic information, pregnancy, marital status, sex, gender, gender identity, gender expression, age, sexual orientation, and military and veteran status, or any other protected status protected by local, state or federal law. 

No one will be subject to, and Jack Henry prohibits, any form of discipline, reprisal, intimidation, or retaliation for good faith reports or complaints of discrimination of any kind, pursuing any discrimination claim, or cooperating in related investigations. 

Requests for full corporate job descriptions may be requested through the interview process at any time.