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Jeff Killinger

Solutions Architect & Developer

I design and build API-driven SaaS systems using headless CMS, composable architecture, and scalable frontend systems. My work spans structured integrations across GraphQL and REST APIs, reusable content models, and clear technical communication with cross-functional teams. I'm especially interested in onboarding, personalization, and billing flows that hold up in production.

Recent work: Led frontend architecture for a multi-site admissions platform at the University of Chicago used across recruitment, financial aid, and academic programs.

Currently building a multi-tenant SaaS platform that combines CMS-driven content, rule-based personalization, and Stripe subscription logic.

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Selected Work

JavaScriptReactGatsbyContentfulGraphQLNetlifyCI/CDAccessibilityPerformance
UChicago Admissions preview

FOCUS: ADMISSIONS FUNNEL

UChicago Admissions

Built the primary admissions site using reusable React components and Contentful-driven content models, supporting a high-traffic admissions funnel.

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Summer Programs preview

FOCUS: COURSE DISCOVERY

Summer Programs

Built course discovery tools that allow prospective students to filter summer classes by level and interest, alongside scalable course page templates that enable program teams to launch new offerings quickly.

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Financial Aid preview

FOCUS: FINANCIAL AID CLARITY

Financial Aid

Led the first headless CMS implementation for the financial aid site, redesigning information architecture and content structure to make complex aid pathways clearer and more accessible for applicants. The site also gave staff more control over time-sensitive alerts and updates through scheduled publishing in Contentful.

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Career Advancement preview

FOCUS: STUDENT CAREER PATHWAYS

Career Advancement

Built a modular content system supporting advising resources and career pathways for undergraduate students, with maintainable content patterns that allow program staff to manage and evolve the site over time.

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Technical Focus

  • Composable architecture and platform thinking
  • Headless CMS modeling and content operations
  • API integrations across GraphQL and REST
  • Scalable frontend systems in React and Gatsby
  • Technical communication and stakeholder alignment
  • Performance, accessibility, and production delivery