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I’m a full stack engineer with 5+ years of experience building scalable web applications across frontend, backend, APIs, and real-time data flows. I blend AI-integrated systems with data-rich dashboards and real-time browser experiences, including custom WebGPU rendering built from the ground up. I’m passionate about cross-functional collaboration and deploying robust products. I’m open to self-funded relocation and eligible to work internationally; authorized to work from July 2026 under a 3-year STEM OPT. I’m excited to contribute to teams that mix strong engineering foundations with AI-powered tooling.…I’m a full stack engineer with 5+ years of experience building scalable web applications across frontend, backend, APIs, and real-time data flows. I blend AI-integrated systems with data-rich dashboards and real-time browser experiences, including custom WebGPU rendering built from the ground up. I’m passionate about cross-functional collaboration and deploying robust products. I’m open to self-funded relocation and eligible to work internationally; authorized to work from July 2026 under a 3-year STEM OPT. I’m excited to contribute to teams that mix strong engineering foundations with AI-powered tooling.

Jack Ruojie Hao

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

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I’m a full stack engineer with 5+ years of experience building scalable web applications across frontend, backend, APIs, and real-time data flows. I blend AI-integrated systems with data-rich dashboards and real-time browser experiences, including custom WebGPU rendering built from the ground up. I’m passionate about cross-functional collaboration and deploying robust products. I’m open to self-funded relocation and eligible to work internationally; authorized to work from July 2026 under a 3-year STEM OPT. I’m excited to contribute to teams that mix strong engineering foundations with AI-powered tooling.…I’m a full stack engineer with 5+ years of experience building scalable web applications across frontend, backend, APIs, and real-time data flows. I blend AI-integrated systems with data-rich dashboards and real-time browser experiences, including custom WebGPU rendering built from the ground up. I’m passionate about cross-functional collaboration and deploying robust products. I’m open to self-funded relocation and eligible to work internationally; authorized to work from July 2026 under a 3-year STEM OPT. I’m excited to contribute to teams that mix strong engineering foundations with AI-powered tooling.

Available to hire

I’m a full stack engineer with 5+ years of experience building scalable web applications across frontend, backend, APIs, and real-time data flows. I blend AI-integrated systems with data-rich dashboards and real-time browser experiences, including custom WebGPU rendering built from the ground up.

I’m passionate about cross-functional collaboration and deploying robust products. I’m open to self-funded relocation and eligible to work internationally; authorized to work from July 2026 under a 3-year STEM OPT. I’m excited to contribute to teams that mix strong engineering foundations with AI-powered tooling.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Chinese

Fluent

Work Experience

Web Developer Intern at AriesView Ltd. (Remote, USA)

September 1, 2025 - December 1, 2025

Built 10+ SEO-optimized Next.js B2B pages and integrated OCR/LLM APIs to automate document analysis, reducing manual review time by ~50%, while supporting Agile code reviews and CI/CD delivery.

AI Developer (IT Technician) at The University of Hong Kong

March 1, 2024 - December 1, 2024

Designed and built a scalable short-answer grading system processing ~500+ student submissions per week, using a modular microservice architecture to separate OCR, scoring, and API routing layers. Integrated EasyOCR, Tesseract, GPT, and LLaVA through a FastAPI/REST pipeline with WebSocket real-time updates, and deployed production services with Nginx, token-based authentication, and rate limiting, reducing perceived latency by ~40%.

Full Stack Developer at DIY Rocks Ltd. (Hong Kong)

April 1, 2023 - February 1, 2024

Built a 3D ring configurator using React.js and WebGPU, enabling users to preview design changes in real time while optimizing the frontend rendering pipeline to maintain smooth 60 FPS 3D interactions on mid-tier devices. Managed AWS EC2 deployment with Ubuntu, DNS routing, and Nginx reverse proxy, integrating CI/CD pipelines for automated build and deployment.

Software Engineer at Roborn Tech Ltd. (Hong Kong)

June 1, 2022 - March 1, 2023

Built a web-based control and content management system for an AI-powered educational robot using component-based UI architecture and state management. Integrated YOLO-based object recognition, UI animations, and multi-screen interaction logic for classroom-style learning scenarios, while implementing a DICOM-enabled WebRTC streaming module for remote assistance and live video communication.

Web Developer / IT Technologist at Shan g Si Yuan Ltd. / Sinosoft Ltd. / Erlinyou Ltd. (China)

July 1, 2016 - April 1, 2020

Built a foundation in frontend development, geospatial visualization, and technical training by developing mobile-first insurance web applications and metro map interfaces, improving responsive UI, Android browser compatibility, REST API integration, XML-based maintenance workflows, and delivering hands-on JavaScript, Node.js, testing, and debugging training to 90+ students.