Summer Software Developer Jobs in Missouri (NOW HIRING)

At Jack Henry, we deliver technology solutions that are digitally transforming and empowering community banks and credit unions to provide enhanced and streamlined user experiences to their customers and members. Our best-in-class products are just the start as we lay the groundwork for the future of digital banking and payments. We hope you'll join us. 

Join our innovative Developer Enablement team, where we focus on empowering our software engineers with cutting-edge AI tools and methodologies. Our team culture is built on collaboration, continuous learning, and the Jack Henry motto: "Do the right thing, do whatever it takes, and have fun". As an intern, you will be an active partner in our coaching initiatives, helping software developers integrate AI into their daily workflows. You will work on real projects that measure and improve the impact of AI on our engineering organization. This 10-week program is a unique opportunity to blend your passion for software development with hands-on coaching, contributing directly to the future of engineering at Jack Henry.

Interns at Jack Henry earn $25/hour and work full-time (40 hours/week, Monday-Friday). Our Summer 2026 Internship Program runs from June 1 to August 7. 

What you'll be responsible for:  

In this role, you'll collaborate with AI coaches to design and deliver training materials that help software developers harness AI to improve code quality, accelerate development, and streamline documentation. You'll serve as a peer coach and trusted resource, supporting development teams in adopting best practices for AI tools, refining prompting techniques, and customizing instructions for optimal results. Additionally, you'll contribute to the full software development lifecycle by analyzing engineering metrics, such as cycle time, bug rates, and pull request size, to evaluate the impact of AI coaching initiatives and uncover opportunities for continuous improvement.

What you'll need to have:  

• Pursuing a degree in Computer Science, Software Engineering, Data Science, Information Systems, or Artificial Intelligence, with an expected graduation date between December 2026 and May 2028.
• Demonstrated foundational knowledge of software development principles and a strong interest in the practical application of AI in a modern engineering environment.
• Must be a U.S. citizen and not require sponsorship for employment authorization now or in the future.

What would be nice for you to have:  

• An enthusiasm for sharing knowledge and collaborating with peers on technical challenges.
• Familiarity with the concepts of the software development lifecycle (from coursework or class projects) and a curiosity for how AI can improve each stage.

• A passion for writing high-quality code and a desire to deepen your understanding of essential topics such as code security and testing.

Why Jack Henry? 

At Jack Henry, our culture is built on a simple but powerful motto: "Do the right thing, do whatever it takes, and have fun." This isn't just a tagline; it's the foundation of how we work, collaborate, and grow together. 

As an intern, you'll have the opportunity to launch your career in a meaningful way. Our 10-week summer internship program offers hands-on experience with real projects that align with our business priorities and shape the future of financial technology. You'll work alongside innovative teams, gain exposure to executive leadership, and receive mentorship designed to support your personal and professional development. 

From strategic insights to impactful solutions, your contributions will matter, and you'll be part of a company that values integrity, curiosity, and connection. 

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.