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Application Development
& Modernization

KR3 offers full-spectrum application development and modernization services that help organizations improve functionality, strengthen security, and prepare for future growth. Whether you need to build new digital solutions or bring legacy systems up to today’s standards, KR3 delivers scalable, mission-aligned applications that meet the demands of modern enterprises and federal agencies.

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We specialize in revitalizing aging infrastructure through modern cloud-native architectures, microservices, and containerization — helping clients improve performance, reduce technical debt, and enhance user experience. Our developers work across modern technology stacks including .NET, Java, Python, JavaScript (React, Angular, Node.js), and mobile platforms such as native iOS/Android, Flutter, and React Native.

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Our Capabilities Include:

  • Legacy Application Modernization: Re-platforming, refactoring, or replacing outdated systems to improve maintainability, performance, and security.

  • Application Assessment & Strategy: Evaluating legacy environments and identifying optimal modernization paths aligned with mission needs.

  • Custom Web & Mobile App Development: Building secure, responsive apps that are scalable across cloud and hybrid environments.

  • UI/UX Design & Prototyping: Redesigning applications with a user-first approach for improved usability and accessibility.

  • Authentication & Access Controls: Integrating identity and access protocols such as OAuth, SAML, SSO, and MFA.

  • Automated Testing & CI/CD: Implementing automated QA pipelines to ensure stability and faster, higher-quality deployments.

  • Ongoing Support & Optimization: Providing long-term maintenance, performance tuning, and enhancement services.

 

Agile, Secure, and Future-Ready

We follow Agile and DevSecOps practices to accelerate delivery, reduce risk, and integrate security throughout the development lifecycle. Our modernization efforts prioritize interoperability, compliance (FISMA, Section 508, FedRAMP), and mission continuity — ensuring systems are not only up-to-date, but built to evolve with your organization’s future needs.

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With KR3 as your partner, outdated systems become high-performing assets — and new applications deliver real, lasting value.

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