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Johnny H.

@Coredev794

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Senior Software Engineer | Automation Engineer

$50 USD / Hour

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United States (6:16 PM)

Joined on August 18, 2025

$50 USD / Hour

I’m Jonny Ha, a Senior Full-Stack and Automation Engineer with over 10 years of experience building scalable web applications, backend systems, AI-powered workflows, and business automation platforms. I’ve worked with startups, growing businesses, and enterprise teams to develop reliable, production-ready solutions that improve operations, performance, and user experience. I enjoy turning complex ideas into clean, efficient systems that are built for long-term growth. My expertise covers both frontend and backend development, allowing me to handle projects from architecture and development to deployment and optimization. I work with modern technologies including React, Next.js, Node.js, TypeScript, Python, PHP, Laravel, MongoDB, PostgreSQL, AWS, Docker, and cloud infrastructure. I also have strong experience building APIs, integrating third-party services, and developing secure, scalable systems that support real business needs. In addition to software development, I specialize in automation engineering and AI integrations. I build intelligent workflows, webhook-based systems, internal management tools, and automation pipelines that reduce manual work and improve efficiency. I focus on creating practical solutions that help businesses operate faster, smarter, and more effectively while maintaining clean architecture and maintainable code. I value professionalism, clear communication, and reliable delivery throughout every project. Clients appreciate that I combine strong technical skills with practical problem-solving and a business-focused mindset. I’m comfortable working independently or collaboratively within teams, and my timezone is flexible to support smooth communication and collaboration with clients worldwide.

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Experience

Senior Full-Stack Developer

Oct, 2024 - Present

1 year, 7 months

T-Mobile

Oct, 2024 - Present

1 year, 7 months

Implemented intelligent chatbot system that handles 80% of customer inquiries automatically while seamlessly escalating complex issues to human agents. Developed a telemedicine app serving 10,000+ users with features like video consultations, appointment scheduling, and AI symptom checker. Achieved 4.8-star rating on both app stores.

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Alhambra, United States

Oct, 2024 - Present

1 year, 7 months

Full-Stack Developer

Jan, 2018 - Oct, 2024

6 years, 9 months

AT&T

Jan, 2018 - Oct, 2024

6 years, 9 months

Built a complete e-commerce solution with AI-powered product recommendations that increased sales by 35%. Features included real-time inventory management, payment gateway integration, and predictive analytics dashboard.

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Walnut, United States

Jan, 2018 - Oct, 2024

6 years, 9 months

React Developer

Apr, 2016 - Dec, 2016

8 months, 1 day

Surefront

Apr, 2016 - Dec, 2016

8 months, 1 day

Created a comprehensive business intelligence platform with real-time data visualization, automated reporting, and machine learning insights. Reduced client decision-making time by 50%.

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Los Angeles, United States

Apr, 2016 - Dec, 2016

8 months, 1 day

Education

California State University-Los Angeles

2012 - 2016

4 years

Bachelor of Computer Science

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United States

2012 - 2016

4 years

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