Senior Software Developer

Senior Software Developer — Web Engineering Team | Hopper Program

Onsite - Overland Park, KS

Senior Software Developer - Svelte and SvelteKit and igital experiences using Sanity CMS and headless architecture principles.

modern JavaScript application development experience

Svelte and SvelteKit

We are seeking a highly skilled Senior Software Developer to join the Web Engineering team supporting the Hopper Program, a strategic initiative focused on modernizing a digital customer experience platform. In this role, you will design, develop, and deploy scalable, high-performing web applications using modern front-end technologies, headless CMS solutions, and cloud-native development practices. You will collaborate closely with architects, product owners, UX teams, and platform engineers to deliver enterprise-scale, customer-facing digital experiences.

Responsibilities

• Design and develop responsive, scalable, and high-performing web applications using Svelte and SvelteKit.
• Build and maintain content-driven digital experiences using Sanity CMS and headless architecture principles.
• Collaborate with Product, UX, Architecture, Platform, and DevOps teams to deliver customer-facing features and enhancements.
• Develop reusable UI components, front-end frameworks, and design system integrations that support consistency and scalability.
• Integrate applications with internal and external APIs, microservices, authentication platforms, and customer data services.
• Champion code quality through peer reviews, automated testing, CI/CD pipelines, and engineering best practices.
• Optimize applications for performance, accessibility, SEO, security, responsiveness, and scalability.
• Participate actively in Agile ceremonies, including sprint planning, backlog refinement, design reviews, and retrospectives.
• Mentor junior developers and contribute to engineering standards, technical decisions, and continuous improvement.
• Support production deployments, troubleshooting, issue resolution, and ongoing platform enhancements.
• Partner with platform and DevOps teams to enable reliable delivery through automated deployment pipelines.

Qualifications

• 7+ years of software development experience.
• 3+ years of modern JavaScript application development experience.
• Strong hands-on experience with:
• Svelte and SvelteKit
• TypeScript
• HTML5, CSS3, and SCSS
• REST APIs and GraphQL
• Git and modern source control practices
• Hands-on experience with:
• Sanity CMS
• Headless CMS architectures
• Component-based UI development
• Responsive web design
• Client-side performance optimization
• Experience building applications deployed in cloud environments such as AWS, Azure, or Google Cloud Platform.
• Familiarity with CI/CD pipelines and DevOps practices.
• Strong knowledge of web accessibility standards, including WCAG, and SEO best practices.
• Test-driven and quality-focused development mindset.
• Experience with automated testing frameworks such as Playwright, Cypress, Jest, or Vitest.
• Experience working in Agile/Scrum delivery teams.
• Strong debugging, troubleshooting, and performance tuning capabilities.

Preferred Qualifications

• Experience supporting large-scale consumer digital platforms.
• Telecommunications or eCommerce industry experience.
• Experience migrating from traditional CMS platforms to headless architectures.
• Knowledge of Adobe Experience Manager, AEM, migration strategies.
• Experience with design systems and reusable component libraries.
• Familiarity with AI-assisted development tools such as GitHub Copilot or Cursor.
• Cloud-native application architecture experience.