Summer Software Engineering Internships Jobs in Missouri

Where Human Connection Fuels Possibility

At Maritz, decades of innovation and perseverance have built more than just a strong reputation - they've shaped a culture where human connection and collaboration are at the heart of everything we do.

Joining Maritz means becoming part of a workplace grounded in a critical truth; people and their potential is our greatest resource.

Maritz helps companies achieve their business goals by inspiring people to perform their best. We design experiences, incentives, and recognition programs that spark action and deliver measurable impact.

And we've brought this human-first design inward - intentionally building teams that care for each other and collaborate powerfully. In our most recent employee survey, nearly 90% of respondents said that their managers care about their concerns and 82% said they feel genuinely appreciated. We know that when employees feel seen, supported, and celebrated for who they are, they thrive and so does our business.

That's why we've created a flexible, environment that empowers you to do your best work without sacrificing what matters most to you. In fact, in that same survey, nearly 90% of respondents said they have the flexibility they need to balance work and personal life and nearly 80% said Maritz does a great job prioritizing employee well being.

We have a passion for excellence and genuine care for the people making it possible.

We are building a cloud-native, AI-forward technology organization. The Software Engineer II supports the development of software that serves Maritz technology, working closely with and under the guidance of fellow engineers on the team. In this role, you will help build and maintain application features and services, with growing exposure to AI-assisted engineering practices.

The ideal candidate brings foundational knowledge in systems or software engineering and curiosity toward emerging technologies, including AI-driven tooling.Experience with IaC tooling, including the ability to understand write, and structure Terraform is highly preferred

What You'll Be Doing

80% - Software Engineering Project Support

• Performs routine to moderately complex development work across a variety of environments, with support from senior engineers on more complex or nonroutine tasks.

• Uses AI-assisted coding tools (e.g., GitHub Copilot, Claude) to accelerate development and improve code quality and throughput.

• Participates in code reviews of peers' work - including AI-generated code - to help ensure quality, security, and adherence to standards.

• Actively participates in and helps facilitate Agile ceremonies (sprint planning, stand-ups, retrospectives).

• Seeks guidance from senior engineers on effective, responsible adoption of AI-assisted development tools.

• Supports efforts to apply AI and automation to improve deployment frequency and increase system reliability.

20% - Problem Solving & Operational Reliability

• Assists withresolvingservice interruptions and contributes to root cause analysis during post-mortems under the guidance of senior engineers.

• Helps identify trends, anomalies, and failure patterns; recommends solutions with input from senior team members.

• Actively participates in a culture of continuous improvement, learning, and operational excellence within the team.

• Supports cross-functional teams during major incidents, helping ensure clear communication and timely updates throughout the lifecycle of an event.

What You'll Bring

Things You Should Know

• This is a hybrid role based in Fenton, MO (Tuesday | Wednesday | Thursday).

DISCLAIMER: This job description is designed to indicate the general nature and level of work performed by associates within this classification. It is not designed to confirm or be interpreted as a comprehensive summary of all duties, responsibilities and qualifications required of associates assigned to this job.

Maritz offers a comprehensive benefits package for full-time employees including medical, dental, vision, life insurance, disability, paid parental leave, 401k, tuition reimbursement, paid time off, year end holiday closure, and more!

View all details at: www.MaritzBenefits.com

Maritz will only employ applicants who have authorization to work permanently in the U.S. This is not a position for which sponsorship will be provided. Those who need sponsorship for work authorization now or in the future are not eligible for hire. No calls or agencies please.

Maritz is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, national origin, age, marital status, political affiliation, sexual orientation, gender identity, genetic information, disability or protected veteran status. We are committed to providing a workplace free of any discrimination or harassment.

If you have a disability and are having difficulty accessing or using this website to apply for a position, you can request help by calling 1-636-827-0380 or by sending an email to recruitment@maritz.com.