Card Concepts, Inc. (CCI) builds payment systems for the vended laundry industry—software + hardware solutions that power thousands of locations. We’re hiring a Senior Flutter Developer to help us finish and evolve existing Flutter applications running on Windows, as well as mobile and web applications as priorities shift.

This is a hands-on development role. While our product interacts with hardware, this position focuses on Flutter/Dart development and API integrations—you will not be writing low-level device drivers or firmware.

Responsibilities

Develop, maintain, and enhance Flutter/Dart applications across:
Windows desktop
Mobile (iOS / Android)
Web (Flutter web apps)
Pick up and extend an existing Flutter codebase—improve reliability, usability, and performance as the project moves toward release.
Build polished, intuitive UI flows optimized for a touchscreen kiosk environment.
Integrate Flutter applications with internal and external APIs (networking, data, hardware workflows exposed through services).
Troubleshoot and debug issues using a practical, test-driven mindset—especially around real device scenarios and edge cases.
Collaborate with internal stakeholders and occasionally coordinate with external development partners.
Partner with QA to validate functionality and ensure releases meet quality expectations.
Write and maintain clear technical documentation to support maintainability and team continuity.

Requirements (Must Have)

Strong professional experience with Flutter and Dart in production applications.
Experience building and supporting customer-facing apps with a focus on stability, performance, and clean architecture.
Comfortable stepping into an existing project and delivering results quickly.
Solid understanding of API-based application development (REST or similar), async programming, and debugging.
Clear written and verbal communication skills.
Ability to work in our Addison office a few days per week, primarily for hardware workflow testing.

Preferred Qualifications (Nice to Have)

Flutter experience on Windows desktop (or other desktop platforms).
Experience with kiosk, POS, or other touchscreen / session-based UI design patterns.
Familiarity with automated testing (unit/widget/integration), CI/CD, and release pipelines.
Exposure to payment systems, transaction workflows, or security-minded development.
Experience coordinating work with contractors or external development teams.

Job Benefits

15 days PTO + paid holidays
401(k) with employer matching (match details provided during the interview process)
Subsidized health insurance
Dental and vision plan
Hybrid work environment (remote flexibility with in-office time required for testing)

About Card Concepts, Inc.

Card Concepts, Inc. (CCI) has been a leader in the vended laundry industry since 2000, delivering electronic payment systems that help small business owners modernize and grow. We’re privately held, customer-focused, and committed to building reliable products supported by long-term partnerships.

If you’re a Flutter developer who enjoys shipping real products, improving existing systems, and working with a team that values practical execution, we’d love to hear from you.

Pay: $110,000.00 - $125,000.00 per year

Benefits:

401(k) matching
Dental insurance
Flexible schedule
Health insurance
Paid time off
Vision insurance

Work Location: Hybrid remote in Addison, IL 60101

Card Concepts Inc

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