Integration/API Engineer

We’ve built a culture rooted in our Core Values, where innovation thrives, work-life balance is respected, and career growth is always encouraged. We’re also proud to be recognized as a ‘Top Workplace,’ and that’s not just us talking; it’s our employees. Now, we’re looking for another Uncommon Genius to join our dynamic team. If you love solving puzzles, building new things, fixing what’s broken, or pushing the boundaries of creativity, we encourage you to explore the details of this position below! UNCOMN is seeking an Integration/API Engineer (Software Developer 4) to:

• Design, build, and support application interfaces using APIs, file exchange, web services, and event-driven patterns.
• Modernize existing integrations to improve reliability, observability, and maintainability.
• Partner with application, data, and platform teams to define interface requirements and implementation approaches.
• Support secure data exchange, error handling, retry logic, and interface monitoring across environments.
• Contribute to integration documentation, interface mapping, and test support needed for successful delivery.
• Troubleshoot integration defects and help teams resolve issues across connected systems and services.

Do you have experience in Web services design?, * 8+ years of related experience.

• Bachelor’s degree in engineering, Computer Science, CMIS, or a related field from an accredited college or university, or 4 additional years of related experience.
• Hands-on experience building or supporting APIs and system-to-system integrations.
• Working knowledge of interface patterns such as REST APIs, file exchange, and web service integration.
• Experience designing or implementing reliable message handling, validation, and error management.
• Ability to collaborate across technical teams to define, build, and support shared interfaces.
• Strong troubleshooting and communication skills in multi-system environments.
• Must be eligible to obtain a Secret clearance or similar, granted by the U.S. Government, which requires U.S. citizenship. The government also uses 13 adjudicative guidelines to determine an individual’s eligibility.
• Must be willing to obtain relevant certifications as required by future client or contract needs.

Preferred

• Experience with event-driven processing or cloud-native integration services.
• Experience with application modernization efforts that involve file, API, or interface redesign.
• Exposure to financial, federal, or other mission-critical transaction environments.
• Candidates local to the St. Louis Metro East market/within commuting distance preferred, although not required.

4.74.7 out of 5 stars St. Louis, MO 63101 $97,000 - $125,000 a year, Pulled from the full job description

• Health insurance
• 401(k) matching
• Paid time off
• Employee assistance program
• Paid holidays
• Benefits from day one, * Instant Flexible PTO: Enjoy flexible paid time off starting your very first day with us!
• Generous Holidays: Benefit from 7 paid holidays and up to 3 floating holidays annually.
• Immediate Health Coverage: Get access to comprehensive health benefits from day one.
• 401K Safe Harbor Match: Secure your future with our top-tier 401K matching program.
• Growth Opportunities: Advance your career with our training and education assistance programs.
• Free Employee Assistance Program (EAP): Access complimentary support services for you and your family.