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Hi there! I’m Jonathan Hernandez, a senior full-stack engineer with 8+ years designing, building, and owning large-scale React and Node.js systems in production. I’ve shipped API-driven platforms powering dashboards and SDKs used by hundreds of companies, and I’m passionate about performance, reliability, and operational excellence. I excel in distributed teams, mentoring engineers, and driving measurable business impact through thoughtful engineering decisions. I enjoy turning complex requirements into practical, maintainable solutions and collaborating with product and design to deliver delightful user experiences.…Hi there! I’m Jonathan Hernandez, a senior full-stack engineer with 8+ years designing, building, and owning large-scale React and Node.js systems in production. I’ve shipped API-driven platforms powering dashboards and SDKs used by hundreds of companies, and I’m passionate about performance, reliability, and operational excellence. I excel in distributed teams, mentoring engineers, and driving measurable business impact through thoughtful engineering decisions. I enjoy turning complex requirements into practical, maintainable solutions and collaborating with product and design to deliver delightful user experiences.

Jonathan Hernandez

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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Hi there! I’m Jonathan Hernandez, a senior full-stack engineer with 8+ years designing, building, and owning large-scale React and Node.js systems in production. I’ve shipped API-driven platforms powering dashboards and SDKs used by hundreds of companies, and I’m passionate about performance, reliability, and operational excellence. I excel in distributed teams, mentoring engineers, and driving measurable business impact through thoughtful engineering decisions. I enjoy turning complex requirements into practical, maintainable solutions and collaborating with product and design to deliver delightful user experiences.…Hi there! I’m Jonathan Hernandez, a senior full-stack engineer with 8+ years designing, building, and owning large-scale React and Node.js systems in production. I’ve shipped API-driven platforms powering dashboards and SDKs used by hundreds of companies, and I’m passionate about performance, reliability, and operational excellence. I excel in distributed teams, mentoring engineers, and driving measurable business impact through thoughtful engineering decisions. I enjoy turning complex requirements into practical, maintainable solutions and collaborating with product and design to deliver delightful user experiences.

Available to hire

Hi there! I’m Jonathan Hernandez, a senior full-stack engineer with 8+ years designing, building, and owning large-scale React and Node.js systems in production. I’ve shipped API-driven platforms powering dashboards and SDKs used by hundreds of companies, and I’m passionate about performance, reliability, and operational excellence.

I excel in distributed teams, mentoring engineers, and driving measurable business impact through thoughtful engineering decisions. I enjoy turning complex requirements into practical, maintainable solutions and collaborating with product and design to deliver delightful user experiences.

Skills

Experience Level

Expert

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Work Experience

Senior Full Stack Engineer

April 1, 2021 - Present

Owned end-to-end development of React and Node.js systems powering dashboards and SDKs used by 500+ companies. Led API design with strict latency and reliability targets. Improved frontend render performance and reduced user-visible latency by ~25%. Built batching and retry logic sustaining 99.9%+ delivery reliability. Reduced backend load by ~30% via Redis caching and query optimization. MTTR improvements through observability and runbooks. Mentored engineers and reviewed architectural designs.

Software Engineer at BiggerPockets

March 1, 2019 - January 1, 2021

Built React and Node.js features powering dashboards and SDKs used by 300K-500K MAU. APIs handling tens of thousands of requests per day. Reduced page load times by ~20% and backend latency by ~25-30% through caching and query tuning. Shipped growth and monetization features cross-functionally. Mentored engineers and contributed to architecture reviews.

Full Stack Developer at TechCrunch

May 1, 2017 - January 1, 2019

Built frontend and backend systems serving 5-10M monthly readers. Supported major tech events with scalable tooling; reduced editorial manual effort through tooling improvements.