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John H.

@johnhygh

5.0
1

2.3

2.3

100%

Full Stack AI Systems Engineer

$35 USD / Hour

Flag of

United States (7:50 PM)

Joined on March 5, 2026

$35 USD / Hour

Senior Full Stack & DevOps Engineer with 9+ years of experience delivering high-performance applications across frontend, backend, and cloud infrastructure. I work at the intersection of software engineering, DevOps, and AI — turning complex ideas into reliable, production-grade platforms. My core strengths include: Full Stack Development: React, Next.js, TypeScript — building fast, intuitive, and scalable user experiences Backend Architecture: Node.js, Python, Ruby on Rails, PHP (Laravel) — designing APIs, microservices, and SaaS platforms Cloud & DevOps: AWS, GCP, Azure, Docker, Kubernetes, CI/CD, Infrastructure as Code — ensuring seamless deployment and scalability AI & Data Systems: LLM integration, RAG pipelines, embeddings, vector databases, automation workflows Data Extraction & Pipelines: advanced web scraping, headless automation, anti-bot strategies, ETL and data processing System Design & Performance: distributed systems, caching strategies, event-driven architecture, high-availability systems Database Engineering: PostgreSQL, MySQL, MongoDB, Redis I approach every project with a systems mindset — focusing on maintainability, performance, and long-term growth. Whether it’s a SaaS platform, AI-powered product, or large-scale data pipeline, I ensure it’s built to scale from day one. If you need someone who can own the full lifecycle — from architecture to deployment — and deliver solutions that actually perform in production… let’s build something exceptional.

Verifications

On time

100%

On budget

100%

Accept rate

100%

Portfolio

Portfolio

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5.0 · 1 Review
Reviews
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Flag of

Olitha A.

5.0

$135 USD

1 month ago

Looking for an Experienced Senior Full Stack Developer

This developer is truly exceptional. He combines strong technical expertise with a very professional and proactive mindset. Communication was smooth, deadlines were met, and he always went the extra mile to improve the project. Highly recommended - I'd absolutely work with him again.

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Experience

Senior Software Engineer

Nov, 2022 - Feb, 2025

2 years, 3 months

DeepRoots

Nov, 2022 - Feb, 2025

2 years, 3 months

•Developed scalable web applications using modern frontend and backend technologies. •Built frontend components using React and JavaScript frameworks. •Developed backend APIs and business logic using Node.js and Python. •Designed and optimized databases using PostgreSQL and MongoDB. •Implemented real-time features and event-driven systems. •Deployed applications on AWS using Docker and CI/CD pipelines.

Flag of

CA, United States

Nov, 2022 - Feb, 2025

2 years, 3 months

Software Developer

Jul, 2017 - Sep, 2021

4 years, 1 month

TypeHuman

Jul, 2017 - Sep, 2021

4 years, 1 month

•Developed scalable web applications using modern frontend and backend technologies. •Built frontend components using React and JavaScript frameworks. •Developed backend APIs and business logic using Node.js and Python. •Designed and optimized databases using PostgreSQL and MongoDB. •Implemented real-time features and event-driven systems. •Deployed applications on AWS using Docker and CI/CD pipelines.

Flag of

Texas, United States

Jul, 2017 - Sep, 2021

4 years, 1 month

Education

University of North Texas

2013 - 2017

4 years

Bachelor's Degree

Flag of

United States

2013 - 2017

4 years

Certifications

PHP - Level 1

PHP

Python Level 1

Python

P

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