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Hollen Graver

@hollengraver

Senior Software Developer at Campspot who delivered an abandoned-cart platform recovering tens of thousands of dollars in its first month.

United States

Message

At Campspot, I served as Tech Lead for the architecture and delivery of an abandoned-cart recovery platform, coordinating event-driven workflows across distributed services. It recovered tens of thousands of dollars in cart value in its first month.

I’ve also worked on payment and fraud systems, customer-facing mobile applications, and cloud migrations at Campspot and PRSM Healthcare. In personal technical projects, I’ve developed local LLM tooling, MCP servers, and lightweight Python and Go services.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Developer Level 2

Current

Campspot

Mar 2024 - Present (2 years 7 months)

Served as Tech Lead for an 'Abandoned Cart' recovery platform, recovering tens of thousands of dollars in cart value in the first month. Engineered fraud mitigation defenses and mentored junior and mid-level developers.

Distributed Systems Event Driven Architecture Fraud Mitigation Flutter iOS Android Mentorship Code Review

Senior Software Developer Level 1

Campspot

Apr 2022 - Mar 2024 (1 year 11 months)

Architected and launched an enterprise gift card platform adopted across hundreds of clients. Hardened checkout and payment processing pipelines handling $2M–$5M in daily transactions.

Gift Platforms Payment Processing POS Invoicing UX NPS Java Microservices

Software Developer Level 2

Campspot

Jul 2019 - Apr 2022 (2 years 9 months)

Owned implementation of enterprise discount and promotional pricing engines. Contributed to backend migration from Node.js/TypeScript to Java microservices and optimized search workflows.

Pricing Engine NodeJS TypeScript Java Microservices Elasticsearch PostgreSQL

Software Engineer

PRSM Healthcare

Jun 2014 - May 2019 (4 years 11 months)

Engineered fault-tolerant systems for call center infrastructure ensuring 100% uptime. Led rewrite of core B2B application from PHP to C# ASP.NET and migrated to cloud.