Open to opportunities

Francis Cullen

@franciscullen

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Senior Software Engineer specializing in scalable cloud-native systems, AI integration, and high-volume data workflows.

United States

Message

What I'm looking for

I seek a senior engineering role building cloud-native, scalable systems that integrate AI/ML, prioritize performance and reliability, and offer mentorship and cross-functional collaboration.

I am a Senior Software Engineer with over 11 years of experience designing and building scalable, cloud-native systems that connect technical decisions to business outcomes. I specialize in Java, Node.js, React, Angular, microservices, and high-volume data workflows, and I apply systems thinking to solve complex technical problems.

I have delivered measurable results such as an AI-powered route optimization engine that reduced delivery times by 18% and fuel costs by 12%, and architected systems handling 50,000+ daily shipments and 500M daily telemetry events using TimescaleDB, Redis, and event streaming. I drive frontend performance initiatives (Lighthouse >95), automated testing strategies (90%+ coverage), and backend optimizations to support large-scale traffic growth.

I am a collaborative mentor and technical leader who has guided engineers through architecture and code reviews, promoted team members to senior roles, and modernized platforms across cloud providers (AWS, Azure). I seek opportunities to build resilient, performant systems that integrate AI/ML and deliver clear business impact.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Intuit

Jan 2019 - Present (7 years)

Architected cloud-native logistics and insurance systems handling high-volume data workflows, reducing delivery times 18% and fuel costs 12% via AI-driven routes and improving frontend performance to Lighthouse >95.

React Next.js NestJS PostgreSQL Redis AWS WebSockets Jest Cypress

Senior Software Developer

Intuit

Jan 2019 - Jul 2022 (3 years 6 months)

Led development of a cloud-based insurance claims platform processing 100,000+ monthly claims and built ML-based damage estimation reducing claim times from five days to four hours.

React TypeScript Express PostgreSQL Redis Lambda Jest Cypress

Software Engineer

Intuit

Feb 2017 - Jan 2019 (1 year 11 months)

Developed analytics dashboards and high-throughput APIs processing over a billion events daily, optimizing queries and achieving sub-three-second dashboard load times.

React Azure Functions SQL Server Storybook Accessibility Performance Optimization

Web Developer

Intuit

Aug 2012 - Feb 2017 (4 years 6 months)

Built full-stack applications with Java and Spring for financial reporting, modernized legacy systems to service-oriented architectures, and established testing and CI standards.